annotate src/video/SDL_blit_A.c @ 979:c9d1ade1fb0b

Grr, have to resort video modes one more time
author Patrice Mandin <patmandin@gmail.com>
date Wed, 17 Nov 2004 23:23:03 +0000
parents 9ef41050100c
children ffaaf7ecf685
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 #include <stdio.h>
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29
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30 #include "SDL_types.h"
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31 #include "SDL_video.h"
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32 #include "SDL_blit.h"
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33
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34 #if (defined(i386) || defined(__x86_64__)) && defined(__GNUC__) && defined(USE_ASMBLIT)
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35 #define MMX_ASMBLIT
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36 #endif
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37
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38 #ifdef MMX_ASMBLIT
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39 /* Function to check the CPU flags */
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40 #include "SDL_cpuinfo.h"
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41 #include "mmx.h"
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42 #endif
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43
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44 /* Functions to perform alpha blended blitting */
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45
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46 /* N->1 blending with per-surface alpha */
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47 static void BlitNto1SurfaceAlpha(SDL_BlitInfo *info)
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48 {
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49 int width = info->d_width;
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50 int height = info->d_height;
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51 Uint8 *src = info->s_pixels;
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52 int srcskip = info->s_skip;
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53 Uint8 *dst = info->d_pixels;
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54 int dstskip = info->d_skip;
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55 Uint8 *palmap = info->table;
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56 SDL_PixelFormat *srcfmt = info->src;
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57 SDL_PixelFormat *dstfmt = info->dst;
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58 int srcbpp = srcfmt->BytesPerPixel;
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59
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60 const unsigned A = srcfmt->alpha;
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61
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62 while ( height-- ) {
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63 DUFFS_LOOP4(
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64 {
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65 Uint32 pixel;
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66 unsigned sR;
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67 unsigned sG;
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68 unsigned sB;
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69 unsigned dR;
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70 unsigned dG;
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71 unsigned dB;
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72 DISEMBLE_RGB(src, srcbpp, srcfmt, pixel, sR, sG, sB);
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73 dR = dstfmt->palette->colors[*dst].r;
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74 dG = dstfmt->palette->colors[*dst].g;
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75 dB = dstfmt->palette->colors[*dst].b;
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76 ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB);
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77 dR &= 0xff;
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78 dG &= 0xff;
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79 dB &= 0xff;
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80 /* Pack RGB into 8bit pixel */
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81 if ( palmap == NULL ) {
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82 *dst =((dR>>5)<<(3+2))|
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83 ((dG>>5)<<(2))|
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84 ((dB>>6)<<(0));
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85 } else {
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86 *dst = palmap[((dR>>5)<<(3+2))|
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87 ((dG>>5)<<(2)) |
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88 ((dB>>6)<<(0))];
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89 }
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90 dst++;
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91 src += srcbpp;
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92 },
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93 width);
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94 src += srcskip;
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95 dst += dstskip;
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96 }
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97 }
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98
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99 /* N->1 blending with pixel alpha */
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100 static void BlitNto1PixelAlpha(SDL_BlitInfo *info)
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101 {
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102 int width = info->d_width;
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103 int height = info->d_height;
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104 Uint8 *src = info->s_pixels;
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105 int srcskip = info->s_skip;
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106 Uint8 *dst = info->d_pixels;
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107 int dstskip = info->d_skip;
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108 Uint8 *palmap = info->table;
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109 SDL_PixelFormat *srcfmt = info->src;
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110 SDL_PixelFormat *dstfmt = info->dst;
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111 int srcbpp = srcfmt->BytesPerPixel;
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112
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113 /* FIXME: fix alpha bit field expansion here too? */
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114 while ( height-- ) {
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115 DUFFS_LOOP4(
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116 {
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117 Uint32 pixel;
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118 unsigned sR;
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119 unsigned sG;
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120 unsigned sB;
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121 unsigned sA;
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122 unsigned dR;
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123 unsigned dG;
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124 unsigned dB;
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125 DISEMBLE_RGBA(src,srcbpp,srcfmt,pixel,sR,sG,sB,sA);
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126 dR = dstfmt->palette->colors[*dst].r;
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127 dG = dstfmt->palette->colors[*dst].g;
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128 dB = dstfmt->palette->colors[*dst].b;
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129 ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB);
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130 dR &= 0xff;
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131 dG &= 0xff;
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132 dB &= 0xff;
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133 /* Pack RGB into 8bit pixel */
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134 if ( palmap == NULL ) {
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135 *dst =((dR>>5)<<(3+2))|
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136 ((dG>>5)<<(2))|
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137 ((dB>>6)<<(0));
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138 } else {
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139 *dst = palmap[((dR>>5)<<(3+2))|
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140 ((dG>>5)<<(2)) |
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141 ((dB>>6)<<(0)) ];
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142 }
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143 dst++;
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144 src += srcbpp;
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145 },
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146 width);
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147 src += srcskip;
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148 dst += dstskip;
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149 }
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150 }
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151
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152 /* colorkeyed N->1 blending with per-surface alpha */
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153 static void BlitNto1SurfaceAlphaKey(SDL_BlitInfo *info)
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154 {
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155 int width = info->d_width;
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156 int height = info->d_height;
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157 Uint8 *src = info->s_pixels;
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158 int srcskip = info->s_skip;
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159 Uint8 *dst = info->d_pixels;
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160 int dstskip = info->d_skip;
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161 Uint8 *palmap = info->table;
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162 SDL_PixelFormat *srcfmt = info->src;
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163 SDL_PixelFormat *dstfmt = info->dst;
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164 int srcbpp = srcfmt->BytesPerPixel;
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165 Uint32 ckey = srcfmt->colorkey;
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166
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167 const int A = srcfmt->alpha;
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168
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169 while ( height-- ) {
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170 DUFFS_LOOP(
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171 {
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172 Uint32 pixel;
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173 unsigned sR;
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174 unsigned sG;
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175 unsigned sB;
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176 unsigned dR;
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177 unsigned dG;
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178 unsigned dB;
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179 DISEMBLE_RGB(src, srcbpp, srcfmt, pixel, sR, sG, sB);
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180 if ( pixel != ckey ) {
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181 dR = dstfmt->palette->colors[*dst].r;
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182 dG = dstfmt->palette->colors[*dst].g;
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183 dB = dstfmt->palette->colors[*dst].b;
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184 ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB);
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185 dR &= 0xff;
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186 dG &= 0xff;
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187 dB &= 0xff;
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188 /* Pack RGB into 8bit pixel */
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189 if ( palmap == NULL ) {
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190 *dst =((dR>>5)<<(3+2))|
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191 ((dG>>5)<<(2)) |
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192 ((dB>>6)<<(0));
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193 } else {
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194 *dst = palmap[((dR>>5)<<(3+2))|
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195 ((dG>>5)<<(2)) |
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196 ((dB>>6)<<(0)) ];
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197 }
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198 }
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199 dst++;
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200 src += srcbpp;
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201 },
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202 width);
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203 src += srcskip;
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204 dst += dstskip;
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205 }
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206 }
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207
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208 #ifdef MMX_ASMBLIT
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209 /* fast RGB888->(A)RGB888 blending with surface alpha=128 special case */
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210 static void BlitRGBtoRGBSurfaceAlpha128MMX(SDL_BlitInfo *info)
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211 {
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212 int width = info->d_width;
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213 int height = info->d_height;
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214 Uint32 *srcp = (Uint32 *)info->s_pixels;
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215 int srcskip = info->s_skip >> 2;
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216 Uint32 *dstp = (Uint32 *)info->d_pixels;
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217 int dstskip = info->d_skip >> 2;
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218 Uint8 load[8];
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219
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220 *(Uint64 *)load = 0x00fefefe00fefefeULL;/* alpha128 mask */
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221 movq_m2r(*load, mm4); /* alpha128 mask -> mm4 */
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222 *(Uint64 *)load = 0x0001010100010101ULL;/* !alpha128 mask */
689
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223 movq_m2r(*load, mm3); /* !alpha128 mask -> mm3 */
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224 *(Uint64 *)load = 0xFF000000FF000000ULL;/* dst alpha mask */
689
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225 movq_m2r(*load, mm7); /* dst alpha mask -> mm7 */
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226 while(height--) {
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227 DUFFS_LOOP_DOUBLE2(
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228 {
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229 Uint32 s = *srcp++;
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230 Uint32 d = *dstp;
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231 *dstp++ = ((((s & 0x00fefefe) + (d & 0x00fefefe)) >> 1)
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232 + (s & d & 0x00010101)) | 0xff000000;
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233 },{
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234 movq_m2r((*dstp), mm2);/* 2 x dst -> mm2(ARGBARGB) */
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235 movq_r2r(mm2, mm6); /* 2 x dst -> mm6(ARGBARGB) */
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236
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237 movq_m2r((*srcp), mm1);/* 2 x src -> mm1(ARGBARGB) */
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238 movq_r2r(mm1, mm5); /* 2 x src -> mm5(ARGBARGB) */
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239
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240 pand_r2r(mm4, mm6); /* dst & mask -> mm6 */
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241 pand_r2r(mm4, mm5); /* src & mask -> mm5 */
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242 paddd_r2r(mm6, mm5); /* mm6 + mm5 -> mm5 */
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243 psrld_i2r(1, mm5); /* mm5 >> 1 -> mm5 */
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244
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245 pand_r2r(mm1, mm2); /* src & dst -> mm2 */
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246 pand_r2r(mm3, mm2); /* mm2 & !mask -> mm2 */
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247 paddd_r2r(mm5, mm2); /* mm5 + mm2 -> mm2 */
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248 por_r2r(mm7, mm2); /* mm7(full alpha) | mm2 -> mm2 */
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249 movq_r2m(mm2, (*dstp));/* mm2 -> 2 x dst pixels */
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250 dstp += 2;
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251 srcp += 2;
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252 }, width);
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253 srcp += srcskip;
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254 dstp += dstskip;
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255 }
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256 emms();
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257 }
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258
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259 /* fast RGB888->(A)RGB888 blending with surface alpha */
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260 static void BlitRGBtoRGBSurfaceAlphaMMX(SDL_BlitInfo *info)
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261 {
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262 unsigned alpha = info->src->alpha;
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263 if(alpha == 128) {
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264 BlitRGBtoRGBSurfaceAlpha128MMX(info);
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265 } else {
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266 int width = info->d_width;
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267 int height = info->d_height;
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268 Uint32 *srcp = (Uint32 *)info->s_pixels;
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269 int srcskip = info->s_skip >> 2;
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270 Uint32 *dstp = (Uint32 *)info->d_pixels;
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271 int dstskip = info->d_skip >> 2;
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272 Uint8 load[8] = {alpha, alpha, alpha, alpha,
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273 alpha, alpha, alpha, alpha};
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274
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275 movq_m2r(*load, mm4); /* alpha -> mm4 */
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276 *(Uint64 *)load = 0x00FF00FF00FF00FFULL;
689
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277 movq_m2r(*load, mm3); /* mask -> mm3 */
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278 pand_r2r(mm3, mm4); /* mm4 & mask -> 0A0A0A0A -> mm4 */
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279 *(Uint64 *)load = 0xFF000000FF000000ULL;/* dst alpha mask */
689
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280 movq_m2r(*load, mm7); /* dst alpha mask -> mm7 */
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281
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282 while(height--) {
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283 DUFFS_LOOP_DOUBLE2({
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284 /* One Pixel Blend */
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285 movd_m2r((*srcp), mm1);/* src(ARGB) -> mm1 (0000ARGB)*/
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286 punpcklbw_r2r(mm1, mm1); /* AARRGGBB -> mm1 */
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287 pand_r2r(mm3, mm1); /* 0A0R0G0B -> mm1 */
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diff changeset
288
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289 movd_m2r((*dstp), mm2);/* dst(ARGB) -> mm2 (0000ARGB)*/
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290 movq_r2r(mm2, mm6);/* dst(ARGB) -> mm6 (0000ARGB)*/
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diff changeset
291 punpcklbw_r2r(mm2, mm2); /* AARRGGBB -> mm2 */
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292 pand_r2r(mm3, mm2); /* 0A0R0G0B -> mm2 */
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diff changeset
293
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diff changeset
294 psubw_r2r(mm2, mm1);/* src - dst -> mm1 */
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diff changeset
295 pmullw_r2r(mm4, mm1); /* mm1 * alpha -> mm1 */
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296 psrlw_i2r(8, mm1); /* mm1 >> 8 -> mm1 */
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297 paddw_r2r(mm1, mm2); /* mm1 + mm2(dst) -> mm2 */
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diff changeset
298 pand_r2r(mm3, mm2); /* 0A0R0G0B -> mm2 */
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299 packuswb_r2r(mm2, mm2); /* ARGBARGB -> mm2 */
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diff changeset
300 por_r2r(mm7, mm2); /* mm7(full alpha) | mm2 -> mm2 */
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301 movd_r2m(mm2, *dstp);/* mm2 -> pixel */
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302 ++srcp;
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303 ++dstp;
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304 },{
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305 /* Two Pixels Blend */
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306 movq_m2r((*srcp), mm0);/* 2 x src -> mm0(ARGBARGB)*/
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307 movq_r2r(mm0, mm1); /* 2 x src -> mm1(ARGBARGB) */
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308 punpcklbw_r2r(mm0, mm0); /* low - AARRGGBB -> mm0 */
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309 pand_r2r(mm3, mm0); /* 0A0R0G0B -> mm0(src1) */
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310 punpckhbw_r2r(mm1, mm1); /* high - AARRGGBB -> mm1 */
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311 pand_r2r(mm3, mm1); /* 0A0R0G0B -> mm1(src2) */
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312
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313 movq_m2r((*dstp), mm2);/* 2 x dst -> mm2(ARGBARGB) */
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314 movq_r2r(mm2, mm5); /* 2 x dst -> mm5(ARGBARGB) */
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315 movq_r2r(mm2, mm6); /* 2 x dst -> mm6(ARGBARGB) */
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316 punpcklbw_r2r(mm2, mm2); /* low - AARRGGBB -> mm2 */
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317 punpckhbw_r2r(mm6, mm6); /* high - AARRGGBB -> mm6 */
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318 pand_r2r(mm3, mm2); /* 0A0R0G0B -> mm2(dst1) */
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319
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320 psubw_r2r(mm2, mm0);/* src1 - dst1 -> mm0 */
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321 pmullw_r2r(mm4, mm0); /* mm0 * alpha -> mm0 */
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322 pand_r2r(mm3, mm6); /* 0A0R0G0B -> mm6(dst2) */
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323 psrlw_i2r(8, mm0); /* mm0 >> 8 -> mm1 */
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324 psubw_r2r(mm6, mm1);/* src2 - dst2 -> mm1 */
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325 pmullw_r2r(mm4, mm1); /* mm1 * alpha -> mm1 */
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326 paddw_r2r(mm0, mm2); /* mm0 + mm2(dst1) -> mm2 */
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327 psrlw_i2r(8, mm1); /* mm1 >> 8 -> mm0 */
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328 pand_r2r(mm3, mm2); /* 0A0R0G0B -> mm2 */
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329 paddw_r2r(mm1, mm6); /* mm1 + mm6(dst2) -> mm6 */
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330 pand_r2r(mm3, mm6); /* 0A0R0G0B -> mm6 */
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331 packuswb_r2r(mm2, mm2); /* ARGBARGB -> mm2 */
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332 packuswb_r2r(mm6, mm6); /* ARGBARGB -> mm6 */
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333 psrlq_i2r(32, mm2); /* mm2 >> 32 -> mm2 */
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334 psllq_i2r(32, mm6); /* mm6 << 32 -> mm6 */
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335 por_r2r(mm6, mm2); /* mm6 | mm2 -> mm2 */
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336 por_r2r(mm7, mm2); /* mm7(full alpha) | mm2 -> mm2 */
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337 movq_r2m(mm2, *dstp);/* mm2 -> 2 x pixel */
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338 srcp += 2;
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339 dstp += 2;
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340 }, width);
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341 srcp += srcskip;
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342 dstp += dstskip;
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343 }
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344 emms();
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345 }
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346 }
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347
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348 /* fast ARGB888->(A)RGB888 blending with pixel alpha */
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349 static void BlitRGBtoRGBPixelAlphaMMX(SDL_BlitInfo *info)
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350 {
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351 int width = info->d_width;
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352 int height = info->d_height;
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353 Uint32 *srcp = (Uint32 *)info->s_pixels;
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354 int srcskip = info->s_skip >> 2;
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355 Uint32 *dstp = (Uint32 *)info->d_pixels;
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356 int dstskip = info->d_skip >> 2;
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357 Uint32 alpha = 0;
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358 Uint8 load[8];
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359
720
f90d80d68071 N Sep 17 8791 Sam Lantinga Re: tks source released
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360 *(Uint64 *)load = 0x00FF00FF00FF00FFULL;
689
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361 movq_m2r(*load, mm3); /* mask -> mm2 */
720
f90d80d68071 N Sep 17 8791 Sam Lantinga Re: tks source released
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362 *(Uint64 *)load = 0x00FF000000000000ULL;
689
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363 movq_m2r(*load, mm7); /* dst alpha mask -> mm2 */
720
f90d80d68071 N Sep 17 8791 Sam Lantinga Re: tks source released
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364 *(Uint64 *)load = 0x00FFFFFF00FFFFFFULL;
689
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365 movq_m2r(*load, mm0); /* alpha 255 mask -> mm0 */
720
f90d80d68071 N Sep 17 8791 Sam Lantinga Re: tks source released
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366 *(Uint64 *)load = 0xFF000000FF000000ULL;
689
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367 movq_m2r(*load, mm6); /* alpha 255 !mask -> mm6 */
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368 while(height--) {
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369 DUFFS_LOOP4({
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370 alpha = *srcp;
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371 alpha >>= 24;
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372 /* FIXME: Here we special-case opaque alpha since the
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373 compositioning used (>>8 instead of /255) doesn't handle
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374 it correctly. Also special-case alpha=0 for speed?
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375 Benchmark this! */
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376 if(alpha) {
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377 if(alpha == SDL_ALPHA_OPAQUE) {
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378 movd_m2r((*srcp), mm1);/* src(ARGB) -> mm1 (0000ARGB)*/
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379 movd_m2r((*dstp), mm2);/* dst(ARGB) -> mm2 (0000ARGB)*/
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380 pand_r2r(mm0, mm1);
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381 pand_r2r(mm6, mm2);
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382 por_r2r(mm1, mm2);
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383 movd_r2m(mm2, (*dstp));
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384 } else {
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385 movd_m2r((*srcp), mm1);/* src(ARGB) -> mm1 (0000ARGB)*/
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386 punpcklbw_r2r(mm1, mm1); /* AARRGGBB -> mm1 */
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387 pand_r2r(mm3, mm1); /* 0A0R0G0B -> mm1 */
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diff changeset
388
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389 movd_m2r((*dstp), mm2);/* dst(ARGB) -> mm2 (0000ARGB)*/
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390 punpcklbw_r2r(mm2, mm2); /* AARRGGBB -> mm2 */
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391 pand_r2r(mm3, mm2); /* 0A0R0G0B -> mm2 */
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diff changeset
392
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393 movq_r2r(mm2, mm5);/* mm2(0A0R0G0B) -> mm5 */
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394 pand_r2r(mm7, mm5); /* mm5 & dst alpha mask -> mm5(0A000000) */
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395 psrlq_i2r(24, mm5); /* mm5 >> 24 -> mm5 (0000A000)*/
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diff changeset
396
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397 movq_r2r(mm1, mm4);/* mm1(0A0R0G0B) -> mm4 */
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398 psrlq_i2r(48, mm4); /* mm4 >> 48 -> mm4(0000000A) */
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399 punpcklwd_r2r(mm4, mm4); /* 00000A0A -> mm4 */
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diff changeset
400 punpcklwd_r2r(mm4, mm4); /* 0A0A0A0A -> mm4 */
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diff changeset
401
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402 /* blend */
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403 psubw_r2r(mm2, mm1);/* src - dst -> mm1 */
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diff changeset
404 pmullw_r2r(mm4, mm1); /* mm1 * alpha -> mm1 */
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diff changeset
405 psrlw_i2r(8, mm1); /* mm1 >> 8 -> mm1 */
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diff changeset
406 paddw_r2r(mm1, mm2); /* mm1 + mm2(dst) -> mm2 */
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407 pand_r2r(mm3, mm2); /* 0A0R0G0B -> mm2 */
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diff changeset
408 packuswb_r2r(mm2, mm2); /* ARGBARGB -> mm2 */
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diff changeset
409 pand_r2r(mm0, mm2); /* 0RGB0RGB -> mm2 */
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diff changeset
410 por_r2r(mm5, mm2); /* dst alpha | mm2 -> mm2 */
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411 movd_r2m(mm2, *dstp);/* mm2 -> dst */
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diff changeset
412 }
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diff changeset
413 }
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diff changeset
414 ++srcp;
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diff changeset
415 ++dstp;
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diff changeset
416 }, width);
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diff changeset
417 srcp += srcskip;
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diff changeset
418 dstp += dstskip;
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diff changeset
419 }
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420 emms();
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diff changeset
421 }
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diff changeset
422 #endif
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diff changeset
423
1
cf2af46e9e2a Changes since SDL 1.2.0 release
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diff changeset
424 /* fast RGB888->(A)RGB888 blending with surface alpha=128 special case */
cf2af46e9e2a Changes since SDL 1.2.0 release
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diff changeset
425 static void BlitRGBtoRGBSurfaceAlpha128(SDL_BlitInfo *info)
0
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parents:
diff changeset
426 {
74212992fb08 Initial revision
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diff changeset
427 int width = info->d_width;
74212992fb08 Initial revision
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diff changeset
428 int height = info->d_height;
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diff changeset
429 Uint32 *srcp = (Uint32 *)info->s_pixels;
74212992fb08 Initial revision
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parents:
diff changeset
430 int srcskip = info->s_skip >> 2;
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diff changeset
431 Uint32 *dstp = (Uint32 *)info->d_pixels;
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parents:
diff changeset
432 int dstskip = info->d_skip >> 2;
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parents:
diff changeset
433
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diff changeset
434 while(height--) {
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diff changeset
435 DUFFS_LOOP4({
1
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents: 0
diff changeset
436 Uint32 s = *srcp++;
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents: 0
diff changeset
437 Uint32 d = *dstp;
cf2af46e9e2a Changes since SDL 1.2.0 release
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diff changeset
438 *dstp++ = ((((s & 0x00fefefe) + (d & 0x00fefefe)) >> 1)
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents: 0
diff changeset
439 + (s & d & 0x00010101)) | 0xff000000;
0
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diff changeset
440 }, width);
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diff changeset
441 srcp += srcskip;
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diff changeset
442 dstp += dstskip;
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diff changeset
443 }
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diff changeset
444 }
74212992fb08 Initial revision
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diff changeset
445
1
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents: 0
diff changeset
446 /* fast RGB888->(A)RGB888 blending with surface alpha */
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents: 0
diff changeset
447 static void BlitRGBtoRGBSurfaceAlpha(SDL_BlitInfo *info)
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents: 0
diff changeset
448 {
cf2af46e9e2a Changes since SDL 1.2.0 release
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diff changeset
449 unsigned alpha = info->src->alpha;
cf2af46e9e2a Changes since SDL 1.2.0 release
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450 if(alpha == 128) {
cf2af46e9e2a Changes since SDL 1.2.0 release
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diff changeset
451 BlitRGBtoRGBSurfaceAlpha128(info);
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents: 0
diff changeset
452 } else {
cf2af46e9e2a Changes since SDL 1.2.0 release
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diff changeset
453 int width = info->d_width;
cf2af46e9e2a Changes since SDL 1.2.0 release
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diff changeset
454 int height = info->d_height;
cf2af46e9e2a Changes since SDL 1.2.0 release
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455 Uint32 *srcp = (Uint32 *)info->s_pixels;
cf2af46e9e2a Changes since SDL 1.2.0 release
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diff changeset
456 int srcskip = info->s_skip >> 2;
cf2af46e9e2a Changes since SDL 1.2.0 release
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diff changeset
457 Uint32 *dstp = (Uint32 *)info->d_pixels;
cf2af46e9e2a Changes since SDL 1.2.0 release
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diff changeset
458 int dstskip = info->d_skip >> 2;
689
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diff changeset
459 Uint32 s;
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diff changeset
460 Uint32 d;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
461 Uint32 s1;
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diff changeset
462 Uint32 d1;
1
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents: 0
diff changeset
463
cf2af46e9e2a Changes since SDL 1.2.0 release
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diff changeset
464 while(height--) {
689
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diff changeset
465 DUFFS_LOOP_DOUBLE2({
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
466 /* One Pixel Blend */
1
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diff changeset
467 s = *srcp;
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents: 0
diff changeset
468 d = *dstp;
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents: 0
diff changeset
469 s1 = s & 0xff00ff;
cf2af46e9e2a Changes since SDL 1.2.0 release
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diff changeset
470 d1 = d & 0xff00ff;
cf2af46e9e2a Changes since SDL 1.2.0 release
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diff changeset
471 d1 = (d1 + ((s1 - d1) * alpha >> 8))
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
472 & 0xff00ff;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
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diff changeset
473 s &= 0xff00;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
474 d &= 0xff00;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
475 d = (d + ((s - d) * alpha >> 8)) & 0xff00;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
476 *dstp = d1 | d | 0xff000000;
cf2af46e9e2a Changes since SDL 1.2.0 release
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parents: 0
diff changeset
477 ++srcp;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
478 ++dstp;
689
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diff changeset
479 },{
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
480 /* Two Pixels Blend */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
481 s = *srcp;
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diff changeset
482 d = *dstp;
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diff changeset
483 s1 = s & 0xff00ff;
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484 d1 = d & 0xff00ff;
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diff changeset
485 d1 += (s1 - d1) * alpha >> 8;
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diff changeset
486 d1 &= 0xff00ff;
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diff changeset
487
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diff changeset
488 s = ((s & 0xff00) >> 8) |
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diff changeset
489 ((srcp[1] & 0xff00) << 8);
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diff changeset
490 d = ((d & 0xff00) >> 8) |
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diff changeset
491 ((dstp[1] & 0xff00) << 8);
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diff changeset
492 d += (s - d) * alpha >> 8;
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diff changeset
493 d &= 0x00ff00ff;
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diff changeset
494
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diff changeset
495 *dstp++ = d1 | ((d << 8) & 0xff00) | 0xff000000;
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diff changeset
496 ++srcp;
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diff changeset
497
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diff changeset
498 s1 = *srcp;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
499 d1 = *dstp;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
500 s1 &= 0xff00ff;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
501 d1 &= 0xff00ff;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
502 d1 += (s1 - d1) * alpha >> 8;
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diff changeset
503 d1 &= 0xff00ff;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
504
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
505 *dstp = d1 | ((d >> 8) & 0xff00) | 0xff000000;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
506 ++srcp;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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diff changeset
507 ++dstp;
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
508 }, width);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
509 srcp += srcskip;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
510 dstp += dstskip;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
511 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
512 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
513 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
514
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
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diff changeset
515 /* fast ARGB888->(A)RGB888 blending with pixel alpha */
74212992fb08 Initial revision
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diff changeset
516 static void BlitRGBtoRGBPixelAlpha(SDL_BlitInfo *info)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
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diff changeset
517 {
74212992fb08 Initial revision
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parents:
diff changeset
518 int width = info->d_width;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
519 int height = info->d_height;
74212992fb08 Initial revision
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parents:
diff changeset
520 Uint32 *srcp = (Uint32 *)info->s_pixels;
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parents:
diff changeset
521 int srcskip = info->s_skip >> 2;
74212992fb08 Initial revision
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parents:
diff changeset
522 Uint32 *dstp = (Uint32 *)info->d_pixels;
74212992fb08 Initial revision
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parents:
diff changeset
523 int dstskip = info->d_skip >> 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
524
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
525 while(height--) {
74212992fb08 Initial revision
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parents:
diff changeset
526 DUFFS_LOOP4({
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
527 Uint32 dalpha;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
528 Uint32 d;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
529 Uint32 s1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
530 Uint32 d1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
531 Uint32 s = *srcp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
532 Uint32 alpha = s >> 24;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
533 /* FIXME: Here we special-case opaque alpha since the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
534 compositioning used (>>8 instead of /255) doesn't handle
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
535 it correctly. Also special-case alpha=0 for speed?
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
536 Benchmark this! */
689
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parents: 297
diff changeset
537 if(alpha) {
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
538 if(alpha == SDL_ALPHA_OPAQUE) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
539 *dstp = (s & 0x00ffffff) | (*dstp & 0xff000000);
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
540 } else {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
541 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
542 * take out the middle component (green), and process
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
543 * the other two in parallel. One multiply less.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
544 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
545 d = *dstp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
546 dalpha = d & 0xff000000;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
547 s1 = s & 0xff00ff;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
548 d1 = d & 0xff00ff;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
549 d1 = (d1 + ((s1 - d1) * alpha >> 8)) & 0xff00ff;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
550 s &= 0xff00;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
551 d &= 0xff00;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
552 d = (d + ((s - d) * alpha >> 8)) & 0xff00;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
553 *dstp = d1 | d | dalpha;
689
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parents: 297
diff changeset
554 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
555 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
556 ++srcp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
557 ++dstp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
558 }, width);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
559 srcp += srcskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
560 dstp += dstskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
561 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
562 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
563
880
9ef41050100c Date: Tue, 30 Mar 2004 21:26:47 -0600
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
564 #ifdef MMX_ASMBLIT
689
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parents: 297
diff changeset
565 /* fast (as in MMX with prefetch) ARGB888->(A)RGB888 blending with pixel alpha */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
566 inline static void BlitRGBtoRGBPixelAlphaMMX3DNOW(SDL_BlitInfo *info)
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
567 {
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
568 int width = info->d_width;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
569 int height = info->d_height;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
570 Uint32 *srcp = (Uint32 *)info->s_pixels;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
571 int srcskip = info->s_skip >> 2;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
572 Uint32 *dstp = (Uint32 *)info->d_pixels;
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diff changeset
573 int dstskip = info->d_skip >> 2;
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diff changeset
574
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diff changeset
575 Uint32 s;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
576 Uint32 alpha;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
577
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
578 __asm__ (
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
579 /* make mm6 all zeros. */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
580 "pxor %%mm6, %%mm6\n"
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
581
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
582 /* Make a mask to preserve the alpha. */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
583 "pcmpeqb %%mm7, %%mm7\n\t" /* mm7(s) = FF FF FF FF | FF FF FF FF */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
584 "psrlq $16, %%mm7\n\t" /* mm7(s) = 00 00 FF FF | FF FF FF FF */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
585
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
586 : );
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
587
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
588 while(height--) {
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
589
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
590 DUFFS_LOOP4({
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
591
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
592 __asm__ (
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
593 "prefetch 64(%0)\n"
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
594 "prefetch 64(%1)\n"
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
595 : : "r" (srcp), "r" (dstp) );
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diff changeset
596
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diff changeset
597 s = *srcp;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
598 alpha = s >> 24;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
599 /* FIXME: Here we special-case opaque alpha since the
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
600 compositioning used (>>8 instead of /255) doesn't handle
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
601 it correctly. Also special-case alpha=0 for speed?
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
602 Benchmark this! */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
603
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diff changeset
604 if(alpha == SDL_ALPHA_OPAQUE) {
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
605 *dstp = (s & 0x00ffffff) | (*dstp & 0xff000000);
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
606 }
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
607
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
608 else {
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
609 __asm__ (
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
610 /* load in the source, and dst. */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
611 "movd (%0), %%mm0\n" /* mm0(s) = 0 0 0 0 | As Rs Gs Bs */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
612 "movd (%1), %%mm1\n" /* mm1(d) = 0 0 0 0 | Ad Rd Gd Bd */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
613
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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diff changeset
614 /* Move the src alpha into mm2 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
615
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
616 /* if supporting pshufw */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
617 /*"pshufw $0x55, %%mm0, %%mm2\n" */ /* mm2 = 0 As 0 As | 0 As 0 As */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
618 /*"psrlw $8, %%mm2\n" */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
619
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
620 /* else: */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
621 "movq %%mm0, %%mm2\n"
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
622 "psrld $24, %%mm2\n" /* mm2 = 0 0 0 0 | 0 0 0 As */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
623 "punpcklwd %%mm2, %%mm2\n" /* mm2 = 0 0 0 0 | 0 As 0 As */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
624 "punpckldq %%mm2, %%mm2\n" /* mm2 = 0 As 0 As | 0 As 0 As */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
625
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
626 /* move the colors into words. */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
627 "punpcklbw %%mm6, %%mm0\n" /* mm0 = 0 As 0 Rs | 0 Gs 0 Bs */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
628 "punpcklbw %%mm6, %%mm1\n" /* mm0 = 0 Ad 0 Rd | 0 Gd 0 Bd */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
629
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
630 /* src - dst */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
631 "psubw %%mm1, %%mm0\n" /* mm0 = As-Ad Rs-Rd | Gs-Gd Bs-Bd */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
632
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
633 /* A * (src-dst) */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
634 "pmullw %%mm2, %%mm0\n" /* mm0 = As*As-d As*Rs-d | As*Gs-d As*Bs-d */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
635 "pand %%mm7, %%mm0\n" /* to preserve dest alpha */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
636 "psrlw $8, %%mm0\n" /* mm0 = Ac>>8 Rc>>8 | Gc>>8 Bc>>8 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
637 "paddb %%mm1, %%mm0\n" /* mm0 = Ac+Ad Rc+Rd | Gc+Gd Bc+Bd */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
638
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
639 "packuswb %%mm0, %%mm0\n" /* mm0 = | Ac Rc Gc Bc */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
640
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
641 "movd %%mm0, (%1)\n" /* result in mm0 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
642
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diff changeset
643 : : "r" (srcp), "r" (dstp) );
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
644
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
645 }
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
646 ++srcp;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
647 ++dstp;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
648 }, width);
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
649 srcp += srcskip;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
650 dstp += dstskip;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
651 }
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
652
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
653 __asm__ (
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
654 "emms\n"
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
655 : );
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
656 }
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
657 #endif
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
658
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
659 /* 16bpp special case for per-surface alpha=50%: blend 2 pixels in parallel */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
660
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
661 /* blend a single 16 bit pixel at 50% */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
662 #define BLEND16_50(d, s, mask) \
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
663 ((((s & mask) + (d & mask)) >> 1) + (s & d & (~mask & 0xffff)))
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
664
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
665 /* blend two 16 bit pixels at 50% */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
666 #define BLEND2x16_50(d, s, mask) \
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
667 (((s & (mask | mask << 16)) >> 1) + ((d & (mask | mask << 16)) >> 1) \
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
668 + (s & d & (~(mask | mask << 16))))
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
669
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
670 static void Blit16to16SurfaceAlpha128(SDL_BlitInfo *info, Uint16 mask)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
671 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
672 int width = info->d_width;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
673 int height = info->d_height;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
674 Uint16 *srcp = (Uint16 *)info->s_pixels;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
675 int srcskip = info->s_skip >> 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
676 Uint16 *dstp = (Uint16 *)info->d_pixels;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
677 int dstskip = info->d_skip >> 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
678
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
679 while(height--) {
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
680 if(((unsigned long)srcp ^ (unsigned long)dstp) & 2) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
681 /*
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
682 * Source and destination not aligned, pipeline it.
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
683 * This is mostly a win for big blits but no loss for
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
684 * small ones
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
685 */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
686 Uint32 prev_sw;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
687 int w = width;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
688
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
689 /* handle odd destination */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
690 if((unsigned long)dstp & 2) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
691 Uint16 d = *dstp, s = *srcp;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
692 *dstp = BLEND16_50(d, s, mask);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
693 dstp++;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
694 srcp++;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
695 w--;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
696 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
697 srcp++; /* srcp is now 32-bit aligned */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
698
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
699 /* bootstrap pipeline with first halfword */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
700 prev_sw = ((Uint32 *)srcp)[-1];
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
701
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
702 while(w > 1) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
703 Uint32 sw, dw, s;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
704 sw = *(Uint32 *)srcp;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
705 dw = *(Uint32 *)dstp;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
706 if(SDL_BYTEORDER == SDL_BIG_ENDIAN)
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
707 s = (prev_sw << 16) + (sw >> 16);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
708 else
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
709 s = (prev_sw >> 16) + (sw << 16);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
710 prev_sw = sw;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
711 *(Uint32 *)dstp = BLEND2x16_50(dw, s, mask);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
712 dstp += 2;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
713 srcp += 2;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
714 w -= 2;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
715 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
716
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
717 /* final pixel if any */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
718 if(w) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
719 Uint16 d = *dstp, s;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
720 if(SDL_BYTEORDER == SDL_BIG_ENDIAN)
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
721 s = prev_sw;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
722 else
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
723 s = prev_sw >> 16;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
724 *dstp = BLEND16_50(d, s, mask);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
725 srcp++;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
726 dstp++;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
727 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
728 srcp += srcskip - 1;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
729 dstp += dstskip;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
730 } else {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
731 /* source and destination are aligned */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
732 int w = width;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
733
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
734 /* first odd pixel? */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
735 if((unsigned long)srcp & 2) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
736 Uint16 d = *dstp, s = *srcp;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
737 *dstp = BLEND16_50(d, s, mask);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
738 srcp++;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
739 dstp++;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
740 w--;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
741 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
742 /* srcp and dstp are now 32-bit aligned */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
743
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
744 while(w > 1) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
745 Uint32 sw = *(Uint32 *)srcp;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
746 Uint32 dw = *(Uint32 *)dstp;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
747 *(Uint32 *)dstp = BLEND2x16_50(dw, sw, mask);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
748 srcp += 2;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
749 dstp += 2;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
750 w -= 2;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
751 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
752
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
753 /* last odd pixel? */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
754 if(w) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
755 Uint16 d = *dstp, s = *srcp;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
756 *dstp = BLEND16_50(d, s, mask);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
757 srcp++;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
758 dstp++;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
759 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
760 srcp += srcskip;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
761 dstp += dstskip;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
762 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
763 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
764 }
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
765
880
9ef41050100c Date: Tue, 30 Mar 2004 21:26:47 -0600
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
766 #ifdef MMX_ASMBLIT
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
767 /* fast RGB565->RGB565 blending with surface alpha */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
768 static void Blit565to565SurfaceAlphaMMX(SDL_BlitInfo *info)
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
769 {
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
770 unsigned alpha = info->src->alpha; /* downscale alpha to 5 bits */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
771 if(alpha == 128) {
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
772 Blit16to16SurfaceAlpha128(info, 0xf7de);
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
773 } else {
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
774 int width = info->d_width;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
775 int height = info->d_height;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
776 Uint16 *srcp = (Uint16 *)info->s_pixels;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
777 int srcskip = info->s_skip >> 1;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
778 Uint16 *dstp = (Uint16 *)info->d_pixels;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
779 int dstskip = info->d_skip >> 1;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
780 Uint32 s, d;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
781 Uint8 load[8];
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
782
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
783 alpha &= ~(1+2+4); /* cut alpha to get the exact same behaviour */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
784 *(Uint64 *)load = alpha;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
785 alpha >>= 3; /* downscale alpha to 5 bits */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
786
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
787 movq_m2r(*load, mm0); /* alpha(0000000A) -> mm0 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
788 punpcklwd_r2r(mm0, mm0); /* 00000A0A -> mm0 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
789 punpcklwd_r2r(mm0, mm0); /* 0A0A0A0A -> mm0 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
790
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
791 /* Setup the 565 color channel masks */
720
f90d80d68071 N Sep 17 8791 Sam Lantinga Re: tks source released
Sam Lantinga <slouken@libsdl.org>
parents: 689
diff changeset
792 *(Uint64 *)load = 0xF800F800F800F800ULL;
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
793 movq_m2r(*load, mm1); /* MASKRED -> mm1 */
720
f90d80d68071 N Sep 17 8791 Sam Lantinga Re: tks source released
Sam Lantinga <slouken@libsdl.org>
parents: 689
diff changeset
794 *(Uint64 *)load = 0x07E007E007E007E0ULL;
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
795 movq_m2r(*load, mm4); /* MASKGREEN -> mm4 */
720
f90d80d68071 N Sep 17 8791 Sam Lantinga Re: tks source released
Sam Lantinga <slouken@libsdl.org>
parents: 689
diff changeset
796 *(Uint64 *)load = 0x001F001F001F001FULL;
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
797 movq_m2r(*load, mm7); /* MASKBLUE -> mm7 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
798 while(height--) {
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
799 DUFFS_LOOP_QUATRO2(
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
800 {
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
801 s = *srcp++;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
802 d = *dstp;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
803 /*
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
804 * shift out the middle component (green) to
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
805 * the high 16 bits, and process all three RGB
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
806 * components at the same time.
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
807 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
808 s = (s | s << 16) & 0x07e0f81f;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
809 d = (d | d << 16) & 0x07e0f81f;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
810 d += (s - d) * alpha >> 5;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
811 d &= 0x07e0f81f;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
812 *dstp++ = d | d >> 16;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
813 },{
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
814 s = *srcp++;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
815 d = *dstp;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
816 /*
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
817 * shift out the middle component (green) to
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
818 * the high 16 bits, and process all three RGB
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
819 * components at the same time.
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
820 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
821 s = (s | s << 16) & 0x07e0f81f;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
822 d = (d | d << 16) & 0x07e0f81f;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
823 d += (s - d) * alpha >> 5;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
824 d &= 0x07e0f81f;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
825 *dstp++ = d | d >> 16;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
826 s = *srcp++;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
827 d = *dstp;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
828 /*
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
829 * shift out the middle component (green) to
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
830 * the high 16 bits, and process all three RGB
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
831 * components at the same time.
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
832 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
833 s = (s | s << 16) & 0x07e0f81f;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
834 d = (d | d << 16) & 0x07e0f81f;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
835 d += (s - d) * alpha >> 5;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
836 d &= 0x07e0f81f;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
837 *dstp++ = d | d >> 16;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
838 },{
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
839 movq_m2r((*dstp), mm3);/* 4 dst pixels -> mm3 */
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diff changeset
840 movq_m2r((*srcp), mm2);/* 4 src pixels -> mm2 */
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diff changeset
841
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
842 /* RED */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
843 movq_r2r(mm2, mm5); /* src -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
844 pand_r2r(mm1 , mm5); /* src & MASKRED -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
845 psrlq_i2r(11, mm5); /* mm5 >> 11 -> mm5 [000r 000r 000r 000r] */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
846
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diff changeset
847 movq_r2r(mm3, mm6); /* dst -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
848 pand_r2r(mm1 , mm6); /* dst & MASKRED -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
849 psrlq_i2r(11, mm6); /* mm6 >> 11 -> mm6 [000r 000r 000r 000r] */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
850
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
851 /* blend */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
852 psubw_r2r(mm6, mm5);/* src - dst -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
853 pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
854 psrlw_i2r(8, mm5); /* mm5 >> 8 -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
855 paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
856 psllq_i2r(11, mm6); /* mm6 << 11 -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
857 pand_r2r(mm1, mm6); /* mm6 & MASKRED -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
858
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
859 movq_r2r(mm4, mm5); /* MASKGREEN -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
860 por_r2r(mm7, mm5); /* MASKBLUE | mm5 -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
861 pand_r2r(mm5, mm3); /* mm3 & mm5(!MASKRED) -> mm3 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
862 por_r2r(mm6, mm3); /* save new reds in dsts */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
863
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
864 /* green */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
865 movq_r2r(mm2, mm5); /* src -> mm5 */
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diff changeset
866 pand_r2r(mm4 , mm5); /* src & MASKGREEN -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
867 psrlq_i2r(5, mm5); /* mm5 >> 5 -> mm5 [000g 000g 000g 000g] */
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diff changeset
868
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diff changeset
869 movq_r2r(mm3, mm6); /* dst -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
870 pand_r2r(mm4 , mm6); /* dst & MASKGREEN -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
871 psrlq_i2r(5, mm6); /* mm6 >> 5 -> mm6 [000g 000g 000g 000g] */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
872
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
873 /* blend */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
874 psubw_r2r(mm6, mm5);/* src - dst -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
875 pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
876 psrlw_i2r(8, mm5); /* mm5 >> 8 -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
877 paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
878 psllq_i2r(5, mm6); /* mm6 << 5 -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
879 pand_r2r(mm4, mm6); /* mm6 & MASKGREEN -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
880
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
881 movq_r2r(mm1, mm5); /* MASKRED -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
882 por_r2r(mm7, mm5); /* MASKBLUE | mm5 -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
883 pand_r2r(mm5, mm3); /* mm3 & mm5(!MASKGREEN) -> mm3 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
884 por_r2r(mm6, mm3); /* save new greens in dsts */
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diff changeset
885
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
886 /* blue */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
887 movq_r2r(mm2, mm5); /* src -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
888 pand_r2r(mm7 , mm5); /* src & MASKRED -> mm5[000b 000b 000b 000b] */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
889
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
890 movq_r2r(mm3, mm6); /* dst -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
891 pand_r2r(mm7 , mm6); /* dst & MASKBLUE -> mm6[000b 000b 000b 000b] */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
892
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
893 /* blend */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
894 psubw_r2r(mm6, mm5);/* src - dst -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
895 pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
896 psrlw_i2r(8, mm5); /* mm5 >> 8 -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
897 paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
898 pand_r2r(mm7, mm6); /* mm6 & MASKBLUE -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
899
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
900 movq_r2r(mm1, mm5); /* MASKRED -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
901 por_r2r(mm4, mm5); /* MASKGREEN | mm5 -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
902 pand_r2r(mm5, mm3); /* mm3 & mm5(!MASKBLUE) -> mm3 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
903 por_r2r(mm6, mm3); /* save new blues in dsts */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
904
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
905 movq_r2m(mm3, *dstp);/* mm3 -> 4 dst pixels */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
906
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
907 srcp += 4;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
908 dstp += 4;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
909 }, width);
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
910 srcp += srcskip;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
911 dstp += dstskip;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
912 }
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
913 emms();
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
914 }
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
915 }
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
916
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
917 /* fast RGB555->RGB555 blending with surface alpha */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
918 static void Blit555to555SurfaceAlphaMMX(SDL_BlitInfo *info)
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
919 {
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
920 unsigned alpha = info->src->alpha; /* downscale alpha to 5 bits */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
921 if(alpha == 128) {
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
922 Blit16to16SurfaceAlpha128(info, 0xfbde);
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
923 } else {
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
924 int width = info->d_width;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
925 int height = info->d_height;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
926 Uint16 *srcp = (Uint16 *)info->s_pixels;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
927 int srcskip = info->s_skip >> 1;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
928 Uint16 *dstp = (Uint16 *)info->d_pixels;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
929 int dstskip = info->d_skip >> 1;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
930 Uint32 s, d;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
931 Uint8 load[8];
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
932
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
933 alpha &= ~(1+2+4); /* cut alpha to get the exact same behaviour */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
934 *(Uint64 *)load = alpha;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
935 alpha >>= 3; /* downscale alpha to 5 bits */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
936
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
937 movq_m2r(*load, mm0); /* alpha(0000000A) -> mm0 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
938 punpcklwd_r2r(mm0, mm0); /* 00000A0A -> mm0 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
939 punpcklwd_r2r(mm0, mm0); /* 0A0A0A0A -> mm0 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
940
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
941 /* Setup the 555 color channel masks */
720
f90d80d68071 N Sep 17 8791 Sam Lantinga Re: tks source released
Sam Lantinga <slouken@libsdl.org>
parents: 689
diff changeset
942 *(Uint64 *)load = 0x7C007C007C007C00ULL;
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
943 movq_m2r(*load, mm1); /* MASKRED -> mm1 */
720
f90d80d68071 N Sep 17 8791 Sam Lantinga Re: tks source released
Sam Lantinga <slouken@libsdl.org>
parents: 689
diff changeset
944 *(Uint64 *)load = 0x03E003E003E003E0ULL;
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
945 movq_m2r(*load, mm4); /* MASKGREEN -> mm4 */
720
f90d80d68071 N Sep 17 8791 Sam Lantinga Re: tks source released
Sam Lantinga <slouken@libsdl.org>
parents: 689
diff changeset
946 *(Uint64 *)load = 0x001F001F001F001FULL;
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
947 movq_m2r(*load, mm7); /* MASKBLUE -> mm7 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
948 while(height--) {
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
949 DUFFS_LOOP_QUATRO2(
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
950 {
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
951 s = *srcp++;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
952 d = *dstp;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
953 /*
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
954 * shift out the middle component (green) to
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
955 * the high 16 bits, and process all three RGB
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
956 * components at the same time.
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
957 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
958 s = (s | s << 16) & 0x03e07c1f;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
959 d = (d | d << 16) & 0x03e07c1f;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
960 d += (s - d) * alpha >> 5;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
961 d &= 0x03e07c1f;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
962 *dstp++ = d | d >> 16;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
963 },{
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
964 s = *srcp++;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
965 d = *dstp;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
966 /*
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
967 * shift out the middle component (green) to
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
968 * the high 16 bits, and process all three RGB
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
969 * components at the same time.
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 297
diff changeset
970 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
971 s = (s | s << 16) & 0x03e07c1f;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
972 d = (d | d << 16) & 0x03e07c1f;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
973 d += (s - d) * alpha >> 5;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
974 d &= 0x03e07c1f;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
975 *dstp++ = d | d >> 16;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
976 s = *srcp++;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
977 d = *dstp;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
978 /*
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
979 * shift out the middle component (green) to
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
980 * the high 16 bits, and process all three RGB
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
981 * components at the same time.
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
982 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
983 s = (s | s << 16) & 0x03e07c1f;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
984 d = (d | d << 16) & 0x03e07c1f;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
985 d += (s - d) * alpha >> 5;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
986 d &= 0x03e07c1f;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
987 *dstp++ = d | d >> 16;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
988 },{
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
989 movq_m2r((*dstp), mm3);/* 4 dst pixels -> mm3 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
990 movq_m2r((*srcp), mm2);/* 4 src pixels -> mm2 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
991
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
992 /* RED */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
993 movq_r2r(mm2, mm5); /* src -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
994 pand_r2r(mm1 , mm5); /* src & MASKRED -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
995 psrlq_i2r(10, mm5); /* mm5 >> 10 -> mm5 [000r 000r 000r 000r] */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
996
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
997 movq_r2r(mm3, mm6); /* dst -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
998 pand_r2r(mm1 , mm6); /* dst & MASKRED -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
999 psrlq_i2r(10, mm6); /* mm6 >> 10 -> mm6 [000r 000r 000r 000r] */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1000
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1001 /* blend */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1002 psubw_r2r(mm6, mm5);/* src - dst -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1003 pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1004 psrlw_i2r(8, mm5); /* mm5 >> 8 -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1005 paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1006 psllq_i2r(10, mm6); /* mm6 << 10 -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1007 pand_r2r(mm1, mm6); /* mm6 & MASKRED -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1008
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1009 movq_r2r(mm4, mm5); /* MASKGREEN -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1010 por_r2r(mm7, mm5); /* MASKBLUE | mm5 -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1011 pand_r2r(mm5, mm3); /* mm3 & mm5(!MASKRED) -> mm3 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1012 por_r2r(mm6, mm3); /* save new reds in dsts */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1013
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1014 /* green */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1015 movq_r2r(mm2, mm5); /* src -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1016 pand_r2r(mm4 , mm5); /* src & MASKGREEN -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1017 psrlq_i2r(5, mm5); /* mm5 >> 5 -> mm5 [000g 000g 000g 000g] */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1018
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1019 movq_r2r(mm3, mm6); /* dst -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1020 pand_r2r(mm4 , mm6); /* dst & MASKGREEN -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1021 psrlq_i2r(5, mm6); /* mm6 >> 5 -> mm6 [000g 000g 000g 000g] */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1022
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1023 /* blend */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1024 psubw_r2r(mm6, mm5);/* src - dst -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1025 pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1026 psrlw_i2r(8, mm5); /* mm5 >> 8 -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1027 paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1028 psllq_i2r(5, mm6); /* mm6 << 5 -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1029 pand_r2r(mm4, mm6); /* mm6 & MASKGREEN -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1030
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1031 movq_r2r(mm1, mm5); /* MASKRED -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1032 por_r2r(mm7, mm5); /* MASKBLUE | mm5 -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1033 pand_r2r(mm5, mm3); /* mm3 & mm5(!MASKGREEN) -> mm3 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1034 por_r2r(mm6, mm3); /* save new greens in dsts */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1035
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1036 /* blue */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1037 movq_r2r(mm2, mm5); /* src -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1038 pand_r2r(mm7 , mm5); /* src & MASKRED -> mm5[000b 000b 000b 000b] */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1039
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1040 movq_r2r(mm3, mm6); /* dst -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1041 pand_r2r(mm7 , mm6); /* dst & MASKBLUE -> mm6[000b 000b 000b 000b] */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1042
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1043 /* blend */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1044 psubw_r2r(mm6, mm5);/* src - dst -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1045 pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1046 psrlw_i2r(8, mm5); /* mm5 >> 8 -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1047 paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1048 pand_r2r(mm7, mm6); /* mm6 & MASKBLUE -> mm6 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1049
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1050 movq_r2r(mm1, mm5); /* MASKRED -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1051 por_r2r(mm4, mm5); /* MASKGREEN | mm5 -> mm5 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1052 pand_r2r(mm5, mm3); /* mm3 & mm5(!MASKBLUE) -> mm3 */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1053 por_r2r(mm6, mm3); /* save new blues in dsts */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1054
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1055 movq_r2m(mm3, *dstp);/* mm3 -> 4 dst pixels */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1056
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1057 srcp += 4;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1058 dstp += 4;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1059 }, width);
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1060 srcp += srcskip;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1061 dstp += dstskip;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1062 }
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1063 emms();
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1064 }
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1065 }
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1066 #endif
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1067
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1068 /* fast RGB565->RGB565 blending with surface alpha */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1069 static void Blit565to565SurfaceAlpha(SDL_BlitInfo *info)
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1070 {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1071 unsigned alpha = info->src->alpha;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1072 if(alpha == 128) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1073 Blit16to16SurfaceAlpha128(info, 0xf7de);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1074 } else {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1075 int width = info->d_width;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1076 int height = info->d_height;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1077 Uint16 *srcp = (Uint16 *)info->s_pixels;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1078 int srcskip = info->s_skip >> 1;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1079 Uint16 *dstp = (Uint16 *)info->d_pixels;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1080 int dstskip = info->d_skip >> 1;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1081 alpha >>= 3; /* downscale alpha to 5 bits */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1082
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1083 while(height--) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1084 DUFFS_LOOP4({
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1085 Uint32 s = *srcp++;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1086 Uint32 d = *dstp;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1087 /*
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1088 * shift out the middle component (green) to
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1089 * the high 16 bits, and process all three RGB
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1090 * components at the same time.
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1091 */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1092 s = (s | s << 16) & 0x07e0f81f;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1093 d = (d | d << 16) & 0x07e0f81f;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1094 d += (s - d) * alpha >> 5;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1095 d &= 0x07e0f81f;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1096 *dstp++ = d | d >> 16;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1097 }, width);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1098 srcp += srcskip;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1099 dstp += dstskip;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1100 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1101 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1102 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1103
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1104 /* fast RGB555->RGB555 blending with surface alpha */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1105 static void Blit555to555SurfaceAlpha(SDL_BlitInfo *info)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1106 {
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1107 unsigned alpha = info->src->alpha; /* downscale alpha to 5 bits */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1108 if(alpha == 128) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1109 Blit16to16SurfaceAlpha128(info, 0xfbde);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1110 } else {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1111 int width = info->d_width;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1112 int height = info->d_height;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1113 Uint16 *srcp = (Uint16 *)info->s_pixels;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1114 int srcskip = info->s_skip >> 1;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1115 Uint16 *dstp = (Uint16 *)info->d_pixels;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1116 int dstskip = info->d_skip >> 1;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1117 alpha >>= 3; /* downscale alpha to 5 bits */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1118
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1119 while(height--) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1120 DUFFS_LOOP4({
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1121 Uint32 s = *srcp++;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1122 Uint32 d = *dstp;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1123 /*
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1124 * shift out the middle component (green) to
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1125 * the high 16 bits, and process all three RGB
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1126 * components at the same time.
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1127 */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1128 s = (s | s << 16) & 0x03e07c1f;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1129 d = (d | d << 16) & 0x03e07c1f;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1130 d += (s - d) * alpha >> 5;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1131 d &= 0x03e07c1f;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1132 *dstp++ = d | d >> 16;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1133 }, width);
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1134 srcp += srcskip;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1135 dstp += dstskip;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1136 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1137 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1138 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1139
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1140 /* fast ARGB8888->RGB565 blending with pixel alpha */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1141 static void BlitARGBto565PixelAlpha(SDL_BlitInfo *info)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1142 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1143 int width = info->d_width;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1144 int height = info->d_height;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1145 Uint32 *srcp = (Uint32 *)info->s_pixels;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1146 int srcskip = info->s_skip >> 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1147 Uint16 *dstp = (Uint16 *)info->d_pixels;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1148 int dstskip = info->d_skip >> 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1149
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1150 while(height--) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1151 DUFFS_LOOP4({
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1152 Uint32 s = *srcp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1153 unsigned alpha = s >> 27; /* downscale alpha to 5 bits */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1154 /* FIXME: Here we special-case opaque alpha since the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1155 compositioning used (>>8 instead of /255) doesn't handle
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1156 it correctly. Also special-case alpha=0 for speed?
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1157 Benchmark this! */
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1158 if(alpha) {
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1159 if(alpha == (SDL_ALPHA_OPAQUE >> 3)) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1160 *dstp = (s >> 8 & 0xf800) + (s >> 5 & 0x7e0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1161 + (s >> 3 & 0x1f);
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1162 } else {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1163 Uint32 d = *dstp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1164 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1165 * convert source and destination to G0RAB65565
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1166 * and blend all components at the same time
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1167 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1168 s = ((s & 0xfc00) << 11) + (s >> 8 & 0xf800)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1169 + (s >> 3 & 0x1f);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1170 d = (d | d << 16) & 0x07e0f81f;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1171 d += (s - d) * alpha >> 5;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1172 d &= 0x07e0f81f;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1173 *dstp = d | d >> 16;
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1174 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1175 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1176 srcp++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1177 dstp++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1178 }, width);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1179 srcp += srcskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1180 dstp += dstskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1181 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1182 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1183
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1184 /* fast ARGB8888->RGB555 blending with pixel alpha */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1185 static void BlitARGBto555PixelAlpha(SDL_BlitInfo *info)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1186 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1187 int width = info->d_width;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1188 int height = info->d_height;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1189 Uint32 *srcp = (Uint32 *)info->s_pixels;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1190 int srcskip = info->s_skip >> 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1191 Uint16 *dstp = (Uint16 *)info->d_pixels;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1192 int dstskip = info->d_skip >> 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1193
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1194 while(height--) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1195 DUFFS_LOOP4({
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1196 unsigned alpha;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1197 Uint32 s = *srcp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1198 alpha = s >> 27; /* downscale alpha to 5 bits */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1199 /* FIXME: Here we special-case opaque alpha since the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1200 compositioning used (>>8 instead of /255) doesn't handle
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1201 it correctly. Also special-case alpha=0 for speed?
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1202 Benchmark this! */
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1203 if(alpha) {
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1204 if(alpha == (SDL_ALPHA_OPAQUE >> 3)) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1205 *dstp = (s >> 9 & 0x7c00) + (s >> 6 & 0x3e0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1206 + (s >> 3 & 0x1f);
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1207 } else {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1208 Uint32 d = *dstp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1209 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1210 * convert source and destination to G0RAB65565
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1211 * and blend all components at the same time
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1212 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1213 s = ((s & 0xf800) << 10) + (s >> 9 & 0x7c00)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1214 + (s >> 3 & 0x1f);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1215 d = (d | d << 16) & 0x03e07c1f;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1216 d += (s - d) * alpha >> 5;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1217 d &= 0x03e07c1f;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1218 *dstp = d | d >> 16;
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1219 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1220 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1221 srcp++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1222 dstp++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1223 }, width);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1224 srcp += srcskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1225 dstp += dstskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1226 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1227 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1228
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1229 /* General (slow) N->N blending with per-surface alpha */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1230 static void BlitNtoNSurfaceAlpha(SDL_BlitInfo *info)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1231 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1232 int width = info->d_width;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1233 int height = info->d_height;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1234 Uint8 *src = info->s_pixels;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1235 int srcskip = info->s_skip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1236 Uint8 *dst = info->d_pixels;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1237 int dstskip = info->d_skip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1238 SDL_PixelFormat *srcfmt = info->src;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1239 SDL_PixelFormat *dstfmt = info->dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1240 int srcbpp = srcfmt->BytesPerPixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1241 int dstbpp = dstfmt->BytesPerPixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1242 unsigned sA = srcfmt->alpha;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1243 unsigned dA = dstfmt->Amask ? SDL_ALPHA_OPAQUE : 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1244
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1245 if(sA) {
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1246 while ( height-- ) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1247 DUFFS_LOOP4(
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1248 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1249 Uint32 pixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1250 unsigned sR;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1251 unsigned sG;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1252 unsigned sB;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1253 unsigned dR;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1254 unsigned dG;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1255 unsigned dB;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1256 DISEMBLE_RGB(src, srcbpp, srcfmt, pixel, sR, sG, sB);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1257 DISEMBLE_RGB(dst, dstbpp, dstfmt, pixel, dR, dG, dB);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1258 ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1259 ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1260 src += srcbpp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1261 dst += dstbpp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1262 },
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1263 width);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1264 src += srcskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1265 dst += dstskip;
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1266 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1267 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1268 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1269
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1270 /* General (slow) colorkeyed N->N blending with per-surface alpha */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1271 static void BlitNtoNSurfaceAlphaKey(SDL_BlitInfo *info)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1272 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1273 int width = info->d_width;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1274 int height = info->d_height;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1275 Uint8 *src = info->s_pixels;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1276 int srcskip = info->s_skip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1277 Uint8 *dst = info->d_pixels;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1278 int dstskip = info->d_skip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1279 SDL_PixelFormat *srcfmt = info->src;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1280 SDL_PixelFormat *dstfmt = info->dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1281 Uint32 ckey = srcfmt->colorkey;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1282 int srcbpp = srcfmt->BytesPerPixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1283 int dstbpp = dstfmt->BytesPerPixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1284 unsigned sA = srcfmt->alpha;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1285 unsigned dA = dstfmt->Amask ? SDL_ALPHA_OPAQUE : 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1286
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1287 while ( height-- ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1288 DUFFS_LOOP4(
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1289 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1290 Uint32 pixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1291 unsigned sR;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1292 unsigned sG;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1293 unsigned sB;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1294 unsigned dR;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1295 unsigned dG;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1296 unsigned dB;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1297 RETRIEVE_RGB_PIXEL(src, srcbpp, pixel);
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1298 if(sA && pixel != ckey) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1299 RGB_FROM_PIXEL(pixel, srcfmt, sR, sG, sB);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1300 DISEMBLE_RGB(dst, dstbpp, dstfmt, pixel, dR, dG, dB);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1301 ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1302 ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1303 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1304 src += srcbpp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1305 dst += dstbpp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1306 },
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1307 width);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1308 src += srcskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1309 dst += dstskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1310 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1311 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1312
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1313 /* General (slow) N->N blending with pixel alpha */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1314 static void BlitNtoNPixelAlpha(SDL_BlitInfo *info)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1315 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1316 int width = info->d_width;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1317 int height = info->d_height;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1318 Uint8 *src = info->s_pixels;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1319 int srcskip = info->s_skip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1320 Uint8 *dst = info->d_pixels;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1321 int dstskip = info->d_skip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1322 SDL_PixelFormat *srcfmt = info->src;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1323 SDL_PixelFormat *dstfmt = info->dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1324
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1325 int srcbpp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1326 int dstbpp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1327
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1328 /* Set up some basic variables */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1329 srcbpp = srcfmt->BytesPerPixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1330 dstbpp = dstfmt->BytesPerPixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1331
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1332 /* FIXME: for 8bpp source alpha, this doesn't get opaque values
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1333 quite right. for <8bpp source alpha, it gets them very wrong
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1334 (check all macros!)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1335 It is unclear whether there is a good general solution that doesn't
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1336 need a branch (or a divide). */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1337 while ( height-- ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1338 DUFFS_LOOP4(
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1339 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1340 Uint32 pixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1341 unsigned sR;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1342 unsigned sG;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1343 unsigned sB;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1344 unsigned dR;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1345 unsigned dG;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1346 unsigned dB;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1347 unsigned sA;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1348 unsigned dA;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1349 DISEMBLE_RGBA(src, srcbpp, srcfmt, pixel, sR, sG, sB, sA);
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1350 if(sA) {
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1351 DISEMBLE_RGBA(dst, dstbpp, dstfmt, pixel, dR, dG, dB, dA);
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1352 ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB);
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1353 ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA);
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1354 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1355 src += srcbpp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1356 dst += dstbpp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1357 },
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1358 width);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1359 src += srcskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1360 dst += dstskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1361 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1362 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1363
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1364
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1365 SDL_loblit SDL_CalculateAlphaBlit(SDL_Surface *surface, int blit_index)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1366 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1367 SDL_PixelFormat *sf = surface->format;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1368 SDL_PixelFormat *df = surface->map->dst->format;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1369
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1370 if(sf->Amask == 0) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1371 if((surface->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1372 if(df->BytesPerPixel == 1)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1373 return BlitNto1SurfaceAlphaKey;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1374 else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1375 return BlitNtoNSurfaceAlphaKey;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1376 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1377 /* Per-surface alpha blits */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1378 switch(df->BytesPerPixel) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1379 case 1:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1380 return BlitNto1SurfaceAlpha;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1381
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1382 case 2:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1383 if(surface->map->identity) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1384 if(df->Gmask == 0x7e0)
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1385 {
880
9ef41050100c Date: Tue, 30 Mar 2004 21:26:47 -0600
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
1386 #ifdef MMX_ASMBLIT
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 720
diff changeset
1387 if(SDL_HasMMX())
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1388 return Blit565to565SurfaceAlphaMMX;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1389 else
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1390 #endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1391 return Blit565to565SurfaceAlpha;
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1392 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1393 else if(df->Gmask == 0x3e0)
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1394 {
880
9ef41050100c Date: Tue, 30 Mar 2004 21:26:47 -0600
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
1395 #ifdef MMX_ASMBLIT
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 720
diff changeset
1396 if(SDL_HasMMX())
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1397 return Blit555to555SurfaceAlphaMMX;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1398 else
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1399 #endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1400 return Blit555to555SurfaceAlpha;
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1401 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1402 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1403 return BlitNtoNSurfaceAlpha;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1404
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1405 case 4:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1406 if(sf->Rmask == df->Rmask
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1407 && sf->Gmask == df->Gmask
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1408 && sf->Bmask == df->Bmask
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1409 && (sf->Rmask | sf->Gmask | sf->Bmask) == 0xffffff
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1410 && sf->BytesPerPixel == 4)
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1411 {
880
9ef41050100c Date: Tue, 30 Mar 2004 21:26:47 -0600
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
1412 #ifdef MMX_ASMBLIT
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 720
diff changeset
1413 if(SDL_HasMMX())
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1414 return BlitRGBtoRGBSurfaceAlphaMMX;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1415 else
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1416 #endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1417 return BlitRGBtoRGBSurfaceAlpha;
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1418 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1419 else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1420 return BlitNtoNSurfaceAlpha;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1421
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1422 case 3:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1423 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1424 return BlitNtoNSurfaceAlpha;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1425 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1426 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1427 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1428 /* Per-pixel alpha blits */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1429 switch(df->BytesPerPixel) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1430 case 1:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1431 return BlitNto1PixelAlpha;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1432
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1433 case 2:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1434 if(sf->BytesPerPixel == 4 && sf->Amask == 0xff000000
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1435 && sf->Gmask == 0xff00
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1436 && ((sf->Rmask == 0xff && df->Rmask == 0x1f)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1437 || (sf->Bmask == 0xff && df->Bmask == 0x1f))) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1438 if(df->Gmask == 0x7e0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1439 return BlitARGBto565PixelAlpha;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1440 else if(df->Gmask == 0x3e0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1441 return BlitARGBto555PixelAlpha;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1442 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1443 return BlitNtoNPixelAlpha;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1444
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1445 case 4:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1446 if(sf->Amask == 0xff000000
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1447 && sf->Rmask == df->Rmask
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1448 && sf->Gmask == df->Gmask
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1449 && sf->Bmask == df->Bmask
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1450 && sf->BytesPerPixel == 4)
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1451 {
880
9ef41050100c Date: Tue, 30 Mar 2004 21:26:47 -0600
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
1452 #ifdef MMX_ASMBLIT
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 720
diff changeset
1453 if(SDL_Has3DNow())
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1454 return BlitRGBtoRGBPixelAlphaMMX3DNOW;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1455 else
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 720
diff changeset
1456 if(SDL_HasMMX())
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1457 return BlitRGBtoRGBPixelAlphaMMX;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1458 else
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1459 #endif
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1460 return BlitRGBtoRGBPixelAlpha;
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1461 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1462 return BlitNtoNPixelAlpha;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1463
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1464 case 3:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1465 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1466 return BlitNtoNPixelAlpha;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1467 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1468 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1469 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1470