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annotate src/video/fbcon/SDL_fbriva.c @ 133:5d4bafca35cd

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Added support for hardware accelerated NVidia driver on framebuffer console Still missing colorkey and alpha blit support
author Sam Lantinga <slouken@libsdl.org>
date Tue, 31 Jul 2001 20:08:51 +0000
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children f1550e1c4916
rev   line source
133
5d4bafca35cd Added support for hardware accelerated NVidia driver on framebuffer console
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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 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@devolution.com
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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_fbriva.h"
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32 #include "riva_mmio.h"
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33 #include "riva_regs.h"
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34
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35 #define PGRAPH_OFFSET 0x00400000
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36 #define FIFO_OFFSET 0x00800000
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37 #define ROP_OFFSET FIFO_OFFSET+0x00000000
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38 #define CLIP_OFFSET FIFO_OFFSET+0x00002000
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39 #define PATT_OFFSET FIFO_OFFSET+0x00004000
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40 #define PIXMAP_OFFSET FIFO_OFFSET+0x00006000
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41 #define BLT_OFFSET FIFO_OFFSET+0x00008000
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42 #define BITMAP_OFFSET FIFO_OFFSET+0x0000A000
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43 #define LINE_OFFSET FIFO_OFFSET+0x0000C000
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44 #define TRI03_OFFSET FIFO_OFFSET+0x0000E000
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45 #define PCIO_OFFSET 0x00601000
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46
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47 static int FifoEmptyCount = 0;
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48 static int FifoFreeCount = 0;
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49
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50 /* Wait for vertical retrace */
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51 static void WaitVBL(_THIS)
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52 {
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53 volatile Uint8 *port = (Uint8 *)(mapped_io + PCIO_OFFSET + 0x3DA);
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54
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55 while ( (*port & 0x08) )
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56 ;
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57 while ( !(*port & 0x08) )
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58 ;
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59 }
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60 static void NV3WaitIdle(_THIS)
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61 {
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62 RivaRop *Rop = (RivaRop *)(mapped_io + ROP_OFFSET);
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63 while ( (Rop->FifoFree < FifoEmptyCount) ||
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64 (*(mapped_io + PGRAPH_OFFSET + 0x000006B0) & 0x01) )
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65 ;
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66 }
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67 static void NV4WaitIdle(_THIS)
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68 {
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69 RivaRop *Rop = (RivaRop *)(mapped_io + ROP_OFFSET);
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70 while ( (Rop->FifoFree < FifoEmptyCount) ||
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71 (*(mapped_io + PGRAPH_OFFSET + 0x00000700) & 0x01) )
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72 ;
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73 }
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74
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75 /* Sets video mem colorkey and accelerated blit function */
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76 static int SetHWColorKey(_THIS, SDL_Surface *surface, Uint32 key)
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77 {
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78 return(0);
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79 }
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80
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81 /* Sets per surface hardware alpha value */
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82 static int SetHWAlpha(_THIS, SDL_Surface *surface, Uint8 value)
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83 {
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84 return(0);
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85 }
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86
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87 static int FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color)
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88 {
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89 int dstX, dstY;
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90 int dstW, dstH;
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91 RivaBitmap *Bitmap = (RivaBitmap *)(mapped_io + BITMAP_OFFSET);
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92
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93 /* Don't blit to the display surface when switched away */
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94 if ( dst == this->screen ) {
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95 SDL_mutexP(hw_lock);
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96 }
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97
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98 /* Set up the X/Y base coordinates */
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99 dstW = rect->w;
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100 dstH = rect->h;
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101 FB_dst_to_xy(this, dst, &dstX, &dstY);
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102
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103 /* Adjust for the current rectangle */
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104 dstX += rect->x;
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105 dstY += rect->y;
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106
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107 RIVA_FIFO_FREE(Bitmap, 1);
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108 Bitmap->Color1A = color;
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109
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110 RIVA_FIFO_FREE(Bitmap, 2);
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111 Bitmap->UnclippedRectangle[0].TopLeft = (dstX << 16) | dstY;
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112 Bitmap->UnclippedRectangle[0].WidthHeight = (dstW << 16) | dstH;
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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 HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect,
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123 SDL_Surface *dst, SDL_Rect *dstrect)
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124 {
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125 SDL_VideoDevice *this = current_video;
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126 int srcX, srcY;
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127 int dstX, dstY;
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128 int dstW, dstH;
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129 RivaScreenBlt *Blt = (RivaScreenBlt *)(mapped_io + BLT_OFFSET);
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130
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131 /* FIXME: For now, only blit to display surface */
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132 if ( dst->pitch != SDL_VideoSurface->pitch ) {
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133 return(src->map->sw_blit(src, srcrect, dst, dstrect));
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134 }
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135
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136 /* Don't blit to the display surface when switched away */
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137 if ( dst == this->screen ) {
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138 SDL_mutexP(hw_lock);
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139 }
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140
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141 /* Calculate source and destination base coordinates (in pixels) */
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142 dstW = dstrect->w;
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143 dstH = dstrect->h;
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144 FB_dst_to_xy(this, src, &srcX, &srcY);
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145 FB_dst_to_xy(this, dst, &dstX, &dstY);
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146
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147 /* Adjust for the current blit rectangles */
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148 srcX += srcrect->x;
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149 srcY += srcrect->y;
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150 dstX += dstrect->x;
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151 dstY += dstrect->y;
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152
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153 RIVA_FIFO_FREE(Blt, 3);
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154 Blt->TopLeftSrc = (srcY << 16) | srcX;
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155 Blt->TopLeftDst = (dstY << 16) | dstX;
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156 Blt->WidthHeight = (dstH << 16) | dstW;
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157
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158 FB_AddBusySurface(src);
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159 FB_AddBusySurface(dst);
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160
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161 if ( dst == this->screen ) {
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162 SDL_mutexV(hw_lock);
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163 }
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164 return(0);
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165 }
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166
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167 static int CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst)
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168 {
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169 int accelerated;
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170
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171 /* Set initial acceleration on */
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172 src->flags |= SDL_HWACCEL;
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173
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174 /* Set the surface attributes */
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175 if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) {
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176 if ( ! this->info.blit_hw_A ) {
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177 src->flags &= ~SDL_HWACCEL;
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178 }
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179 }
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180 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
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181 if ( ! this->info.blit_hw_CC ) {
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182 src->flags &= ~SDL_HWACCEL;
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183 }
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184 }
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185
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186 /* Check to see if final surface blit is accelerated */
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187 accelerated = !!(src->flags & SDL_HWACCEL);
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188 if ( accelerated ) {
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189 src->map->hw_blit = HWAccelBlit;
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190 }
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191 return(accelerated);
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192 }
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193
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194 void FB_RivaAccel(_THIS, __u32 card)
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195 {
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196 RivaRop *Rop = (RivaRop *)(mapped_io + ROP_OFFSET);
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197
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198 /* We have hardware accelerated surface functions */
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199 this->CheckHWBlit = CheckHWBlit;
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200 wait_vbl = WaitVBL;
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201 switch (card) {
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202 case FB_ACCEL_NV3:
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203 wait_idle = NV3WaitIdle;
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204 break;
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205 case FB_ACCEL_NV4:
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206 wait_idle = NV4WaitIdle;
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207 break;
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208 default:
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209 /* Hmm... FIXME */
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210 break;
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211 }
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212 FifoEmptyCount = Rop->FifoFree;
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213
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214 /* The Riva has an accelerated color fill */
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215 this->info.blit_fill = 1;
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216 this->FillHWRect = FillHWRect;
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217
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218 /* The Riva has accelerated normal and colorkey blits. */
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219 this->info.blit_hw = 1;
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220 #if 0 /* Not yet implemented? */
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221 this->info.blit_hw_CC = 1;
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222 this->SetHWColorKey = SetHWColorKey;
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diff changeset
223 #endif
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224
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diff changeset
225 #if 0 /* Not yet implemented? */
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226 /* The Riva has an accelerated alpha blit */
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227 this->info.blit_hw_A = 1;
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diff changeset
228 this->SetHWAlpha = SetHWAlpha;
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diff changeset
229 #endif
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230 }