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annotate src/video/fbcon/SDL_fbmatrox.c @ 1708:cd14138a8703 SDL-1.3

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Merged fix for bug #240 from SDL 1.2
author Sam Lantinga <slouken@libsdl.org>
date Sat, 24 Jun 2006 17:31:46 +0000
parents 4da1ee79c9af
children
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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 Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 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 Lesser 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 Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 #include "SDL_config.h"
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23
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24 #include "SDL_video.h"
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25 #include "../SDL_blit.h"
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26 #include "SDL_fbmatrox.h"
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27 #include "matrox_mmio.h"
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28
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29
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30 /* Wait for vertical retrace - taken from the XFree86 Matrox driver */
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31 static void
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32 WaitVBL(_THIS)
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33 {
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34 int count;
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35
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36 /* find start of retrace */
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37 mga_waitidle();
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38 while ((mga_in8(0x1FDA) & 0x08));
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39 while (!(mga_in8(0x1FDA) & 0x08));
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40 /* wait until we're past the start */
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41 count = mga_in32(0x1E20) + 2;
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42 while (mga_in32(0x1E20) < count);
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43 }
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44 static void
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45 WaitIdle(_THIS)
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46 {
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47 mga_waitidle();
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48 }
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49
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50 /* Sets video mem colorkey and accelerated blit function */
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51 static int
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52 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 /* Sets per surface hardware alpha value */
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58 #if 0
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59 static int
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60 SetHWAlpha(_THIS, SDL_Surface * surface, Uint8 value)
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61 {
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62 return (0);
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63 }
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64 #endif
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65
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66 static int
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67 FillHWRect(_THIS, SDL_Surface * dst, SDL_Rect * rect, Uint32 color)
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68 {
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69 int dstX, dstY;
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70 Uint32 fxbndry;
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71 Uint32 ydstlen;
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72 Uint32 fillop;
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73
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74 /* Don't blit to the display surface when switched away */
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75 if (switched_away) {
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76 return -2; /* no hardware access */
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77 }
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78 if (dst == this->screen) {
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79 SDL_mutexP(hw_lock);
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80 }
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81
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82 switch (dst->format->BytesPerPixel) {
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83 case 1:
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84 color |= (color << 8);
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85 case 2:
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86 color |= (color << 16);
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87 break;
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88 }
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89
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90 /* Set up the X/Y base coordinates */
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91 FB_dst_to_xy(this, dst, &dstX, &dstY);
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92
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93 /* Adjust for the current rectangle */
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94 dstX += rect->x;
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95 dstY += rect->y;
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96
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97 /* Set up the X boundaries */
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98 fxbndry = (dstX | ((dstX + rect->w) << 16));
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99
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100 /* Set up the Y boundaries */
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101 ydstlen = (rect->h | (dstY << 16));
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102
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103 /* Set up for color fill operation */
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104 fillop = MGADWG_TRAP | MGADWG_SOLID |
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105 MGADWG_ARZERO | MGADWG_SGNZERO | MGADWG_SHIFTZERO;
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106
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107 /* Execute the operations! */
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108 mga_wait(5);
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109 mga_out32(MGAREG_DWGCTL, fillop | MGADWG_REPLACE);
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110 mga_out32(MGAREG_FCOL, color);
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111 mga_out32(MGAREG_FXBNDRY, fxbndry);
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112 mga_out32(MGAREG_YDSTLEN + MGAREG_EXEC, ydstlen);
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113
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114 FB_AddBusySurface(dst);
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115
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116 if (dst == this->screen) {
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117 SDL_mutexV(hw_lock);
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118 }
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119 return (0);
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120 }
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121
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122 static int
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123 HWAccelBlit(SDL_Surface * src, SDL_Rect * srcrect,
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124 SDL_Surface * dst, SDL_Rect * dstrect)
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125 {
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126 SDL_VideoDevice *this = current_video;
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127 int pitch, w, h;
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128 int srcX, srcY;
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129 int dstX, dstY;
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130 Uint32 sign;
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131 Uint32 start, stop;
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132 int skip;
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133 Uint32 blitop;
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134
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135 /* FIXME: For now, only blit to display surface */
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136 if (dst->pitch != SDL_VideoSurface->pitch) {
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137 return (src->map->sw_blit(src, srcrect, dst, dstrect));
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138 }
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139
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140 /* Don't blit to the display surface when switched away */
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141 if (switched_away) {
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142 return -2; /* no hardware access */
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143 }
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144 if (dst == this->screen) {
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145 SDL_mutexP(hw_lock);
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146 }
109
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147
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148 /* Calculate source and destination base coordinates (in pixels) */
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149 w = dstrect->w;
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150 h = dstrect->h;
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151 FB_dst_to_xy(this, src, &srcX, &srcY);
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152 FB_dst_to_xy(this, dst, &dstX, &dstY);
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153
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154 /* Adjust for the current blit rectangles */
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155 srcX += srcrect->x;
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156 srcY += srcrect->y;
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157 dstX += dstrect->x;
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158 dstY += dstrect->y;
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159 pitch = dst->pitch / dst->format->BytesPerPixel;
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160
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161 /* Set up the blit direction (sign) flags */
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162 sign = 0;
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163 if (srcX < dstX) {
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164 sign |= 1;
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165 }
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166 if (srcY < dstY) {
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167 sign |= 4;
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168 srcY += (h - 1);
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169 dstY += (h - 1);
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170 }
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171
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172 /* Set up the blit source row start, end, and skip (in pixels) */
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173 stop = start = (srcY * pitch) + srcX;
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174 if (srcX < dstX) {
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175 start += (w - 1);
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176 } else {
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177 stop += (w - 1);
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178 }
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179 if (srcY < dstY) {
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180 skip = -pitch;
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181 } else {
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182 skip = pitch;
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183 }
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184
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185 /* Set up the blit operation */
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186 if ((src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY) {
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187 Uint32 colorkey;
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188
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189 blitop = MGADWG_BFCOL | MGADWG_BITBLT |
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190 MGADWG_SHIFTZERO | MGADWG_RSTR | (0x0C << 16) | MGADWG_TRANSC;
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191
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192 colorkey = src->format->colorkey;
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193 switch (dst->format->BytesPerPixel) {
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194 case 1:
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195 colorkey |= (colorkey << 8);
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196 case 2:
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197 colorkey |= (colorkey << 16);
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198 break;
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199 }
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200 mga_wait(2);
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201 mga_out32(MGAREG_FCOL, colorkey);
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202 mga_out32(MGAREG_BCOL, 0xFFFFFFFF);
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203 } else {
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204 blitop = MGADWG_BFCOL | MGADWG_BITBLT |
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205 MGADWG_SHIFTZERO | MGADWG_RSTR | (0x0C << 16);
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206 }
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207 mga_wait(7);
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208 mga_out32(MGAREG_SGN, sign);
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209 mga_out32(MGAREG_AR3, start);
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210 mga_out32(MGAREG_AR0, stop);
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211 mga_out32(MGAREG_AR5, skip);
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212 mga_out32(MGAREG_FXBNDRY, (dstX | ((dstX + w - 1) << 16)));
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213 mga_out32(MGAREG_YDSTLEN, (dstY << 16) | h);
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214 mga_out32(MGAREG_DWGCTL + MGAREG_EXEC, blitop);
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215
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216 FB_AddBusySurface(src);
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217 FB_AddBusySurface(dst);
106
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218
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219 if (dst == this->screen) {
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220 SDL_mutexV(hw_lock);
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221 }
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222 return (0);
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223 }
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224
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225 static int
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226 CheckHWBlit(_THIS, SDL_Surface * src, SDL_Surface * dst)
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227 {
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228 int accelerated;
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229
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230 /* Set initial acceleration on */
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231 src->flags |= SDL_HWACCEL;
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232
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233 /* Set the surface attributes */
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234 if ((src->flags & SDL_SRCALPHA) == SDL_SRCALPHA) {
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235 if (!this->info.blit_hw_A) {
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236 src->flags &= ~SDL_HWACCEL;
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237 }
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238 }
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239 if ((src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY) {
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240 if (!this->info.blit_hw_CC) {
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241 src->flags &= ~SDL_HWACCEL;
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242 }
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243 }
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244
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245 /* Check to see if final surface blit is accelerated */
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246 accelerated = !!(src->flags & SDL_HWACCEL);
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247 if (accelerated) {
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248 src->map->hw_blit = HWAccelBlit;
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249 }
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250 return (accelerated);
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251 }
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252
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253 void
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254 FB_MatroxAccel(_THIS, __u32 card)
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255 {
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256 /* We have hardware accelerated surface functions */
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257 this->CheckHWBlit = CheckHWBlit;
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258 wait_vbl = WaitVBL;
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259 wait_idle = WaitIdle;
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260
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261 /* The Matrox has an accelerated color fill */
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262 this->info.blit_fill = 1;
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263 this->FillHWRect = FillHWRect;
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264
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265 /* The Matrox has accelerated normal and colorkey blits. */
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266 this->info.blit_hw = 1;
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267 /* The Millenium I appears to do the colorkey test a word
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268 at a time, and the transparency is intverted. (?)
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269 */
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270 if (card != FB_ACCEL_MATROX_MGA2064W) {
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271 this->info.blit_hw_CC = 1;
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272 this->SetHWColorKey = SetHWColorKey;
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273 }
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274 #if 0 /* Not yet implemented? */
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275 /* The Matrox G200/G400 has an accelerated alpha blit */
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276 if ((card == FB_ACCEL_MATROX_MGAG200)
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277 || (card == FB_ACCEL_MATROX_MGAG400)) {
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278 this->info.blit_hw_A = 1;
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279 this->SetHWAlpha = SetHWAlpha;
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280 }
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281 #endif
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282 }
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283
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284 /* vi: set ts=4 sw=4 expandtab: */