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annotate src/video/fbcon/SDL_fbriva.c @ 1944:91f41fc124a7

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The AAlib driver is fun, but not worth rewriting for SDL 1.3
author Sam Lantinga <slouken@libsdl.org>
date Wed, 26 Jul 2006 03:24:27 +0000
parents c121d94672cb
children e1da92da346c
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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_fbriva.h"
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27 #include "riva_mmio.h"
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28 #include "riva_regs.h"
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30
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31 static int FifoEmptyCount = 0;
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32 static int FifoFreeCount = 0;
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33
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34 /* Wait for vertical retrace */
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35 static void
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36 WaitVBL(_THIS)
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37 {
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38 volatile Uint8 *port = (Uint8 *) (mapped_io + PCIO_OFFSET + 0x3DA);
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39
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40 while ((*port & 0x08));
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41 while (!(*port & 0x08));
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42 }
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43 static void
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44 NV3WaitIdle(_THIS)
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45 {
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46 RivaRop *Rop = (RivaRop *) (mapped_io + ROP_OFFSET);
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47 while ((Rop->FifoFree < FifoEmptyCount) ||
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48 (*(mapped_io + PGRAPH_OFFSET + 0x000006B0) & 0x01));
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49 }
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50 static void
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51 NV4WaitIdle(_THIS)
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52 {
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53 RivaRop *Rop = (RivaRop *) (mapped_io + ROP_OFFSET);
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54 while ((Rop->FifoFree < FifoEmptyCount) ||
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55 (*(mapped_io + PGRAPH_OFFSET + 0x00000700) & 0x01));
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56 }
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57
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58 #if 0 /* Not yet implemented? */
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59 /* Sets video mem colorkey and accelerated blit function */
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60 static int
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61 SetHWColorKey(_THIS, SDL_Surface * surface, Uint32 key)
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62 {
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63 return (0);
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64 }
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65
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66 /* Sets per surface hardware alpha value */
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67 static int
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68 SetHWAlpha(_THIS, SDL_Surface * surface, Uint8 value)
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69 {
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70 return (0);
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71 }
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72 #endif /* Not yet implemented */
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73
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74 static int
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75 FillHWRect(_THIS, SDL_Surface * dst, SDL_Rect * rect, Uint32 color)
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76 {
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77 int dstX, dstY;
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78 int dstW, dstH;
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79 RivaBitmap *Bitmap = (RivaBitmap *) (mapped_io + BITMAP_OFFSET);
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80
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81 /* Don't blit to the display surface when switched away */
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82 if (switched_away) {
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83 return -2; /* no hardware access */
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84 }
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85 if (dst == this->screen) {
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86 SDL_mutexP(hw_lock);
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87 }
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88
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89 /* Set up the X/Y base coordinates */
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90 dstW = rect->w;
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91 dstH = rect->h;
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92 FB_dst_to_xy(this, dst, &dstX, &dstY);
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93
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94 /* Adjust for the current rectangle */
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95 dstX += rect->x;
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96 dstY += rect->y;
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97
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98 RIVA_FIFO_FREE(Bitmap, 1);
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99 Bitmap->Color1A = color;
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100
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101 RIVA_FIFO_FREE(Bitmap, 2);
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102 Bitmap->UnclippedRectangle[0].TopLeft = (dstX << 16) | dstY;
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103 Bitmap->UnclippedRectangle[0].WidthHeight = (dstW << 16) | dstH;
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104
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105 FB_AddBusySurface(dst);
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106
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107 if (dst == this->screen) {
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108 SDL_mutexV(hw_lock);
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109 }
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110 return (0);
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111 }
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112
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113 static int
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114 HWAccelBlit(SDL_Surface * src, SDL_Rect * srcrect,
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115 SDL_Surface * dst, SDL_Rect * dstrect)
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116 {
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117 SDL_VideoDevice *this = current_video;
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118 int srcX, srcY;
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119 int dstX, dstY;
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120 int dstW, dstH;
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121 RivaScreenBlt *Blt = (RivaScreenBlt *) (mapped_io + BLT_OFFSET);
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122
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123 /* FIXME: For now, only blit to display surface */
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124 if (dst->pitch != SDL_VideoSurface->pitch) {
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125 return (src->map->sw_blit(src, srcrect, dst, dstrect));
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126 }
133
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127
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128 /* Don't blit to the display surface when switched away */
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129 if (switched_away) {
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130 return -2; /* no hardware access */
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131 }
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132 if (dst == this->screen) {
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133 SDL_mutexP(hw_lock);
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134 }
133
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135
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136 /* Calculate source and destination base coordinates (in pixels) */
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137 dstW = dstrect->w;
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138 dstH = dstrect->h;
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139 FB_dst_to_xy(this, src, &srcX, &srcY);
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140 FB_dst_to_xy(this, dst, &dstX, &dstY);
133
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141
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142 /* Adjust for the current blit rectangles */
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143 srcX += srcrect->x;
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144 srcY += srcrect->y;
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145 dstX += dstrect->x;
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146 dstY += dstrect->y;
133
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147
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148 RIVA_FIFO_FREE(Blt, 3);
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149 Blt->TopLeftSrc = (srcY << 16) | srcX;
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150 Blt->TopLeftDst = (dstY << 16) | dstX;
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151 Blt->WidthHeight = (dstH << 16) | dstW;
133
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152
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153 FB_AddBusySurface(src);
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154 FB_AddBusySurface(dst);
133
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155
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156 if (dst == this->screen) {
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157 SDL_mutexV(hw_lock);
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158 }
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159 return (0);
133
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160 }
5d4bafca35cd Added support for hardware accelerated NVidia driver on framebuffer console
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161
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162 static int
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163 CheckHWBlit(_THIS, SDL_Surface * src, SDL_Surface * dst)
133
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164 {
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165 int accelerated;
133
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166
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167 /* Set initial acceleration on */
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168 src->flags |= SDL_HWACCEL;
133
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169
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170 /* Set the surface attributes */
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171 if ((src->flags & SDL_SRCALPHA) == SDL_SRCALPHA) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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172 if (!this->info.blit_hw_A) {
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173 src->flags &= ~SDL_HWACCEL;
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174 }
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175 }
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176 if ((src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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177 if (!this->info.blit_hw_CC) {
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178 src->flags &= ~SDL_HWACCEL;
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179 }
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180 }
133
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181
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182 /* Check to see if final surface blit is accelerated */
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183 accelerated = !!(src->flags & SDL_HWACCEL);
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184 if (accelerated) {
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185 src->map->hw_blit = HWAccelBlit;
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186 }
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187 return (accelerated);
133
5d4bafca35cd Added support for hardware accelerated NVidia driver on framebuffer console
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188 }
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189
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190 void
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191 FB_RivaAccel(_THIS, __u32 card)
133
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192 {
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193 RivaRop *Rop = (RivaRop *) (mapped_io + ROP_OFFSET);
133
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194
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195 /* We have hardware accelerated surface functions */
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196 this->CheckHWBlit = CheckHWBlit;
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197 wait_vbl = WaitVBL;
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198 switch (card) {
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199 case FB_ACCEL_NV3:
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200 wait_idle = NV3WaitIdle;
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201 break;
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diff changeset
202 case FB_ACCEL_NV4:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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203 wait_idle = NV4WaitIdle;
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204 break;
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diff changeset
205 default:
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206 /* Hmm... FIXME */
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207 break;
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diff changeset
208 }
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209 FifoEmptyCount = Rop->FifoFree;
133
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210
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211 /* The Riva has an accelerated color fill */
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212 this->info.blit_fill = 1;
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diff changeset
213 this->FillHWRect = FillHWRect;
133
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diff changeset
214
1895
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215 /* The Riva has accelerated normal and colorkey blits. */
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216 this->info.blit_hw = 1;
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217 #if 0 /* Not yet implemented? */
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diff changeset
218 this->info.blit_hw_CC = 1;
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219 this->SetHWColorKey = SetHWColorKey;
133
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diff changeset
220 #endif
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diff changeset
221
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222 #if 0 /* Not yet implemented? */
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223 /* The Riva has an accelerated alpha blit */
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diff changeset
224 this->info.blit_hw_A = 1;
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225 this->SetHWAlpha = SetHWAlpha;
133
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diff changeset
226 #endif
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227 }
1895
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diff changeset
228
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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229 /* vi: set ts=4 sw=4 expandtab: */