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annotate src/video/fbcon/SDL_fbriva.c @ 1057:e9d23bb80140

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Date: Mon, 02 May 2005 04:23:16 -0500 From: Jonathan Atkins Subject: Re: [PATCH] *CRITICAL* 8bit direct RGB palette not being created I think that SDL_AllocFormat should create the palette for all 8bit surfaces. And when the RGBAmasks match the normal 3:3:2:0 we need to apply the old behavior. If the mask doesn't match that, then we need to make the right palette assuming the masks are valid (I don't think we validate any masks for high color surfaces...so we wouldn't here) Then there's always a palette available for the 8bit surfaces. This restores the normal behavior and allows for masks to create palettes automatically for odd masks even, which would be a neato thing to have in there, as SDL never did this before.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 16 May 2005 05:34:58 +0000
parents 3d4f1930ed02
children c9b51268668f
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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b8d311d90021 Updated copyright information for 2004 (Happy New Year!)
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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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e8157fcb3114 Updated the source with the correct e-mail address
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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_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
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36 static int FifoEmptyCount = 0;
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37 static int FifoFreeCount = 0;
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38
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39 /* Wait for vertical retrace */
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40 static void WaitVBL(_THIS)
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41 {
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42 volatile Uint8 *port = (Uint8 *)(mapped_io + PCIO_OFFSET + 0x3DA);
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43
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44 while ( (*port & 0x08) )
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45 ;
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46 while ( !(*port & 0x08) )
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47 ;
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48 }
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49 static void NV3WaitIdle(_THIS)
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50 {
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51 RivaRop *Rop = (RivaRop *)(mapped_io + ROP_OFFSET);
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52 while ( (Rop->FifoFree < FifoEmptyCount) ||
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53 (*(mapped_io + PGRAPH_OFFSET + 0x000006B0) & 0x01) )
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54 ;
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55 }
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56 static void NV4WaitIdle(_THIS)
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57 {
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58 RivaRop *Rop = (RivaRop *)(mapped_io + ROP_OFFSET);
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59 while ( (Rop->FifoFree < FifoEmptyCount) ||
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60 (*(mapped_io + PGRAPH_OFFSET + 0x00000700) & 0x01) )
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61 ;
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62 }
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63
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64 #if 0 /* Not yet implemented? */
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65 /* Sets video mem colorkey and accelerated blit function */
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66 static int SetHWColorKey(_THIS, SDL_Surface *surface, Uint32 key)
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67 {
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68 return(0);
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69 }
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70
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71 /* Sets per surface hardware alpha value */
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72 static int SetHWAlpha(_THIS, SDL_Surface *surface, Uint8 value)
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73 {
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74 return(0);
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75 }
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76 #endif /* Not yet implemented */
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77
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78 static int FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color)
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79 {
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80 int dstX, dstY;
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81 int dstW, dstH;
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82 RivaBitmap *Bitmap = (RivaBitmap *)(mapped_io + BITMAP_OFFSET);
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83
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84 /* Don't blit to the display surface when switched away */
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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 HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect,
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114 SDL_Surface *dst, SDL_Rect *dstrect)
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115 {
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116 SDL_VideoDevice *this = current_video;
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117 int srcX, srcY;
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118 int dstX, dstY;
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119 int dstW, dstH;
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120 RivaScreenBlt *Blt = (RivaScreenBlt *)(mapped_io + BLT_OFFSET);
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121
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122 /* FIXME: For now, only blit to display surface */
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123 if ( dst->pitch != SDL_VideoSurface->pitch ) {
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124 return(src->map->sw_blit(src, srcrect, dst, dstrect));
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125 }
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126
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127 /* Don't blit to the display surface when switched away */
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128 if ( dst == this->screen ) {
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129 SDL_mutexP(hw_lock);
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130 }
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131
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132 /* Calculate source and destination base coordinates (in pixels) */
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133 dstW = dstrect->w;
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134 dstH = dstrect->h;
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135 FB_dst_to_xy(this, src, &srcX, &srcY);
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136 FB_dst_to_xy(this, dst, &dstX, &dstY);
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137
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138 /* Adjust for the current blit rectangles */
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139 srcX += srcrect->x;
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140 srcY += srcrect->y;
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141 dstX += dstrect->x;
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142 dstY += dstrect->y;
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143
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144 RIVA_FIFO_FREE(Blt, 3);
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145 Blt->TopLeftSrc = (srcY << 16) | srcX;
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146 Blt->TopLeftDst = (dstY << 16) | dstX;
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147 Blt->WidthHeight = (dstH << 16) | dstW;
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148
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149 FB_AddBusySurface(src);
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150 FB_AddBusySurface(dst);
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151
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152 if ( dst == this->screen ) {
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153 SDL_mutexV(hw_lock);
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154 }
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155 return(0);
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156 }
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157
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158 static int CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst)
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159 {
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160 int accelerated;
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161
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162 /* Set initial acceleration on */
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163 src->flags |= SDL_HWACCEL;
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164
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165 /* Set the surface attributes */
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166 if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) {
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167 if ( ! this->info.blit_hw_A ) {
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168 src->flags &= ~SDL_HWACCEL;
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169 }
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170 }
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171 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
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172 if ( ! this->info.blit_hw_CC ) {
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173 src->flags &= ~SDL_HWACCEL;
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174 }
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175 }
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176
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177 /* Check to see if final surface blit is accelerated */
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178 accelerated = !!(src->flags & SDL_HWACCEL);
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179 if ( accelerated ) {
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180 src->map->hw_blit = HWAccelBlit;
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181 }
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182 return(accelerated);
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183 }
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184
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185 void FB_RivaAccel(_THIS, __u32 card)
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186 {
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187 RivaRop *Rop = (RivaRop *)(mapped_io + ROP_OFFSET);
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188
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189 /* We have hardware accelerated surface functions */
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190 this->CheckHWBlit = CheckHWBlit;
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191 wait_vbl = WaitVBL;
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192 switch (card) {
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193 case FB_ACCEL_NV3:
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194 wait_idle = NV3WaitIdle;
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195 break;
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196 case FB_ACCEL_NV4:
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197 wait_idle = NV4WaitIdle;
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198 break;
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199 default:
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200 /* Hmm... FIXME */
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201 break;
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202 }
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203 FifoEmptyCount = Rop->FifoFree;
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204
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205 /* The Riva has an accelerated color fill */
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206 this->info.blit_fill = 1;
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207 this->FillHWRect = FillHWRect;
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208
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209 /* The Riva has accelerated normal and colorkey blits. */
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210 this->info.blit_hw = 1;
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211 #if 0 /* Not yet implemented? */
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212 this->info.blit_hw_CC = 1;
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213 this->SetHWColorKey = SetHWColorKey;
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214 #endif
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215
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216 #if 0 /* Not yet implemented? */
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217 /* The Riva has an accelerated alpha blit */
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218 this->info.blit_hw_A = 1;
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219 this->SetHWAlpha = SetHWAlpha;
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220 #endif
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221 }