annotate src/video/fbcon/SDL_fb3dfx.c @ 532:058d47b7a3b4

Return an error with color fills on less than 8 bpp surfaces.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 15 Oct 2002 05:22:50 +0000
parents f6ffac90895c
children b8d311d90021
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, 1998, 1999, 2000, 2001, 2002 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 "SDL_types.h"
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29 #include "SDL_video.h"
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30 #include "SDL_blit.h"
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31 #include "SDL_fb3dfx.h"
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32 #include "3dfx_mmio.h"
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33
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34
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35 /* Wait for vertical retrace */
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36 static void WaitVBL(_THIS)
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37 {
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38 /* find start of retrace */
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39 tdfx_waitidle();
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40 while( (tdfx_in32(TDFX_STATUS) & STATUS_RETRACE) == STATUS_RETRACE )
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41 ;
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42 /* wait until we're past the start */
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43 while( (tdfx_in32(TDFX_STATUS) & STATUS_RETRACE) == 0 )
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44 ;
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45 }
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46 static void WaitIdle(_THIS)
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47 {
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48 tdfx_waitidle();
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49 }
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50
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51 /* Sets video mem colorkey and accelerated blit function */
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52 static int SetHWColorKey(_THIS, SDL_Surface *surface, Uint32 key)
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53 {
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54 return(0);
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55 }
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56
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57 static int FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color)
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58 {
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59 int bpp;
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60 char *dst_base;
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61 Uint32 format;
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62 int dstX, dstY;
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63
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64 /* Don't blit to the display surface when switched away */
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65 if ( dst == this->screen ) {
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66 SDL_mutexP(hw_lock);
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67 }
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68
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69 /* Set the destination pixel format */
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70 dst_base = (char *)((char *)dst->pixels - mapped_mem);
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71 bpp = dst->format->BitsPerPixel;
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72 format = dst->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13);
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73
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74 /* Calculate source and destination base coordinates */
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75 dstX = rect->x;
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76 dstY = rect->y;
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77
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78 /* Execute the fill command */
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79 tdfx_wait(6);
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80 tdfx_out32(DSTBASE, (Uint32)dst_base);
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81 tdfx_out32(DSTFORMAT, format);
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82 tdfx_out32(COLORFORE, color);
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83 tdfx_out32(COMMAND_2D, COMMAND_2D_FILLRECT);
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84 tdfx_out32(DSTSIZE, rect->w | (rect->h << 16));
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85 tdfx_out32(LAUNCH_2D, dstX | (dstY << 16));
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86
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87 FB_AddBusySurface(dst);
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88
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89 if ( dst == this->screen ) {
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90 SDL_mutexV(hw_lock);
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91 }
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92 return(0);
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93 }
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94
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95 static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect,
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96 SDL_Surface *dst, SDL_Rect *dstrect)
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97 {
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98 SDL_VideoDevice *this = current_video;
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99 int bpp;
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100 Uint32 src_format;
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101 Uint32 dst_format;
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102 char *src_base;
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103 char *dst_base;
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104 int srcX, srcY;
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105 int dstX, dstY;
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106 Uint32 blitop;
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107 Uint32 use_colorkey;
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108
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109 /* Don't blit to the display surface when switched away */
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110 if ( dst == this->screen ) {
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111 SDL_mutexP(hw_lock);
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112 }
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113
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114 /* Set the source and destination pixel format */
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115 src_base = (char *)((char *)src->pixels - mapped_mem);
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116 bpp = src->format->BitsPerPixel;
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117 src_format = src->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13);
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118 dst_base = (char *)((char *)dst->pixels - mapped_mem);
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119 bpp = dst->format->BitsPerPixel;
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120 dst_format = dst->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13);
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121
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122 srcX = srcrect->x;
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123 srcY = srcrect->y;
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124 dstX = dstrect->x;
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125 dstY = dstrect->y;
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126
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127 /* Assemble the blit operation */
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128 blitop = COMMAND_2D_BITBLT | (0xCC << 24);
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129 if ( srcX <= dstX ) {
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130 blitop |= BIT(14);
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131 srcX += (dstrect->w - 1);
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132 dstX += (dstrect->w - 1);
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133 }
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134 if ( srcY <= dstY ) {
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135 blitop |= BIT(15);
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136 srcY += (dstrect->h - 1);
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137 dstY += (dstrect->h - 1);
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138 }
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139
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140 /* Perform the blit! */
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141 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
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142 tdfx_wait(3);
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143 tdfx_out32(SRCCOLORKEYMIN, src->format->colorkey);
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144 tdfx_out32(SRCCOLORKEYMAX, src->format->colorkey);
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145 tdfx_out32(ROP_2D, 0xAA00);
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146 use_colorkey = 1;
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147 } else {
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148 use_colorkey = 0;
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149 }
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150 tdfx_wait(9);
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151 tdfx_out32(SRCBASE, (Uint32)src_base);
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152 tdfx_out32(SRCFORMAT, src_format);
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153 tdfx_out32(DSTBASE, (Uint32)dst_base);
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154 tdfx_out32(DSTFORMAT, src_format);
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155 tdfx_out32(COMMAND_2D, blitop);
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156 tdfx_out32(COMMANDEXTRA_2D, use_colorkey);
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157 tdfx_out32(DSTSIZE, dstrect->w | (dstrect->h << 16));
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158 tdfx_out32(DSTXY, dstX | (dstY << 16));
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159 tdfx_out32(LAUNCH_2D, srcX | (srcY << 16));
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160
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161 FB_AddBusySurface(src);
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162 FB_AddBusySurface(dst);
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163
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164 if ( dst == this->screen ) {
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165 SDL_mutexV(hw_lock);
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166 }
0
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167 return(0);
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168 }
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169
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170 static int CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst)
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171 {
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172 int accelerated;
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173
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174 /* Set initial acceleration on */
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175 src->flags |= SDL_HWACCEL;
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176
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177 /* Set the surface attributes */
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178 if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) {
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179 if ( ! this->info.blit_hw_A ) {
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180 src->flags &= ~SDL_HWACCEL;
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181 }
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182 }
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183 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
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184 if ( ! this->info.blit_hw_CC ) {
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185 src->flags &= ~SDL_HWACCEL;
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186 }
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187 }
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188
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189 /* Check to see if final surface blit is accelerated */
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190 accelerated = !!(src->flags & SDL_HWACCEL);
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191 if ( accelerated ) {
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192 src->map->hw_blit = HWAccelBlit;
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193 }
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194 return(accelerated);
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195 }
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196
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197 void FB_3DfxAccel(_THIS, __u32 card)
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198 {
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199 /* We have hardware accelerated surface functions */
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200 this->CheckHWBlit = CheckHWBlit;
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201 wait_vbl = WaitVBL;
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202 wait_idle = WaitIdle;
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203
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204 /* Reset the 3Dfx controller */
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205 tdfx_out32(BRESERROR0, 0);
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206 tdfx_out32(BRESERROR1, 0);
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207
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208 /* The 3Dfx has an accelerated color fill */
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209 this->info.blit_fill = 1;
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210 this->FillHWRect = FillHWRect;
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211
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212 /* The 3Dfx has accelerated normal and colorkey blits */
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213 this->info.blit_hw = 1;
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214 this->info.blit_hw_CC = 1;
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215 this->SetHWColorKey = SetHWColorKey;
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216 }