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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_fbmatrox.h"
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32 #include "matrox_mmio.h"
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33
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34
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35 static int LockHWSurface(_THIS, SDL_Surface *surface)
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36 {
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37 if ( surface == SDL_VideoSurface ) {
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38 mga_waitidle();
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39 }
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40 return(0);
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41 }
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42 static void UnlockHWSurface(_THIS, SDL_Surface *surface)
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43 {
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44 return;
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45 }
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46
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47 /* Wait for vertical retrace - taken from the XFree86 Matrox driver */
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48 static void WaitVBL(_THIS)
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49 {
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50 int count;
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51
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52 /* find start of retrace */
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53 mga_waitidle();
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54 while ( (mga_in8(0x1FDA) & 0x08) )
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55 ;
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56 while ( !(mga_in8(0x1FDA) & 0x08) )
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57 ;
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58 /* wait until we're past the start */
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59 count = mga_in32(0x1E20) + 2;
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60 while ( mga_in32(0x1E20) < count )
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61 ;
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62 }
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63
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64 /* Sets video mem colorkey and accelerated blit function */
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65 static int SetHWColorKey(_THIS, SDL_Surface *surface, Uint32 key)
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66 {
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67 return(0);
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68 }
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69
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70 /* Sets per surface hardware alpha value */
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71 static int SetHWAlpha(_THIS, SDL_Surface *surface, Uint8 value)
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72 {
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73 return(0);
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74 }
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75
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76 static int FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color)
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77 {
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78 int dstX, dstY;
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79 Uint32 fxbndry;
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80 Uint32 ydstlen;
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81 Uint32 fillop;
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82
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83 switch (dst->format->BytesPerPixel) {
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84 case 1:
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85 color |= (color<<8);
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86 case 2:
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87 color |= (color<<16);
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88 break;
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89 }
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90
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91 /* Set up the X/Y base coordinates */
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92 dstX = 0;
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93 dstY = ((char *)dst->pixels - mapped_mem) / SDL_VideoSurface->pitch;
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94
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95 /* Adjust for the current rectangle */
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96 dstX += rect->x;
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97 dstY += rect->y;
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98
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99 /* Set up the X boundaries */
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100 fxbndry = (dstX | ((dstX+rect->w) << 16));
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101
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102 /* Set up the Y boundaries */
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103 ydstlen = (rect->h | (dstY << 16));
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104
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105 #if 0 /* This old way doesn't work on the Matrox G450 */
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106 /* Set up for color fill operation */
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107 fillop = MGADWG_TRAP | MGADWG_SOLID |
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108 MGADWG_ARZERO | MGADWG_SGNZERO | MGADWG_SHIFTZERO |
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109 MGADWG_BFCOL | MGADWG_BLK;
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110
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111 /* Execute the operations! */
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112 mga_wait(4);
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113 mga_out32(MGAREG_FCOL, color);
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114 mga_out32(MGAREG_FXBNDRY, fxbndry);
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115 mga_out32(MGAREG_YDSTLEN, ydstlen);
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116 mga_out32(MGAREG_DWGCTL + MGAREG_EXEC, fillop);
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117 #else
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118 /* Set up for color fill operation */
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119 fillop = MGADWG_TRAP | MGADWG_SOLID |
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120 MGADWG_ARZERO | MGADWG_SGNZERO | MGADWG_SHIFTZERO;
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121
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122 /* Execute the operations! */
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123 mga_wait(5);
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124 mga_out32(MGAREG_DWGCTL, fillop | MGADWG_REPLACE);
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125 mga_out32(MGAREG_FCOL, color);
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126 mga_out32(MGAREG_FXBNDRY, fxbndry);
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127 mga_out32(MGAREG_YDSTLEN + MGAREG_EXEC, ydstlen);
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128 #endif
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129
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130 return(0);
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131 }
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132
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133 static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect,
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134 SDL_Surface *dst, SDL_Rect *dstrect)
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135 {
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136 SDL_VideoDevice *this;
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137 int bpp;
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138 int srcX, srcY;
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139 int dstX, dstY;
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140 Uint32 sign;
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141 Uint32 sstart, sstop;
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142 int sskip;
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143 Uint32 blitop;
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144
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145 /* FIXME: For now, only blit to display surface */
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146 if ( dst->pitch != SDL_VideoSurface->pitch ) {
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147 return(src->map->sw_blit(src, srcrect, dst, dstrect));
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148 }
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149
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150 /* Calculate source and destination base coordinates (in pixels) */
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151 this = current_video;
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152 srcX= 0; /* FIXME: Calculate this from memory offset */
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153 srcY = ((char *)src->pixels - mapped_mem) / SDL_VideoSurface->pitch;
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154 dstX = 0; /* FIXME: Calculate this from memory offset */
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155 dstY = ((char *)dst->pixels - mapped_mem) / SDL_VideoSurface->pitch;
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156
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157 /* Adjust for the current blit rectangles */
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158 srcX += srcrect->x;
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159 srcY += srcrect->y;
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160 dstX += dstrect->x;
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161 dstY += dstrect->y;
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162
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163 /* Set up the blit direction (sign) flags */
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164 sign = 0;
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165 if ( srcX < dstX ) {
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166 sign |= 1;
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167 }
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168 if ( srcY < dstY ) {
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169 sign |= 4;
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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 bpp = src->format->BytesPerPixel;
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174 sstop = sstart = ((srcY * SDL_VideoSurface->pitch)/bpp) + srcX;
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175 if ( srcX < dstX ) {
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176 sstart += (dstrect->w - 1);
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177 } else {
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178 sstop += (dstrect->w - 1);
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179 }
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180 sskip = src->pitch/bpp;
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181 if ( srcY < dstY ) {
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182 sskip = -sskip;
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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) |
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191 MGADWG_TRANSC;
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192
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193 colorkey = src->format->colorkey;
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194 switch (dst->format->BytesPerPixel) {
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195 case 1:
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196 colorkey |= (colorkey<<8);
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197 case 2:
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198 colorkey |= (colorkey<<16);
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199 break;
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200 }
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201 mga_wait(2);
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202 mga_out32(MGAREG_FCOL, colorkey);
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203 mga_out32(MGAREG_BCOL, 0xFFFFFFFF);
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204 } else {
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205 blitop = MGADWG_BFCOL | MGADWG_BITBLT |
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206 MGADWG_SHIFTZERO | MGADWG_RSTR | (0x0C << 16);
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207 }
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208 mga_wait(7);
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209 mga_out32(MGAREG_SGN, sign);
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210 mga_out32(MGAREG_AR3, sstart);
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211 mga_out32(MGAREG_AR0, sstop);
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212 mga_out32(MGAREG_AR5, sskip);
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213 mga_out32(MGAREG_FXBNDRY, (dstX | ((dstX + dstrect->w-1) << 16)));
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214 mga_out32(MGAREG_YDSTLEN, (dstY << 16) | dstrect->h);
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215 mga_out32(MGAREG_DWGCTL + MGAREG_EXEC, blitop);
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216
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217 return(0);
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218 }
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219
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220 static int CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst)
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221 {
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222 int accelerated;
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223
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224 /* Set initial acceleration on */
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225 src->flags |= SDL_HWACCEL;
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226
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227 /* Set the surface attributes */
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228 if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) {
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229 if ( ! this->info.blit_hw_A ) {
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230 src->flags &= ~SDL_HWACCEL;
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231 }
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232 }
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233 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
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234 if ( ! this->info.blit_hw_CC ) {
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235 src->flags &= ~SDL_HWACCEL;
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236 }
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237 }
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238
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239 /* Check to see if final surface blit is accelerated */
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240 accelerated = !!(src->flags & SDL_HWACCEL);
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241 if ( accelerated ) {
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242 src->map->hw_blit = HWAccelBlit;
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243 }
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244 return(accelerated);
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245 }
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246
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247 void FB_MatroxAccel(_THIS, __u32 card)
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248 {
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249 /* We have hardware accelerated surface functions */
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250 this->CheckHWBlit = CheckHWBlit;
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251 this->LockHWSurface = LockHWSurface;
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252 this->UnlockHWSurface = UnlockHWSurface;
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253 wait_vbl = WaitVBL;
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254
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255 /* The Matrox has an accelerated color fill */
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256 this->info.blit_fill = 1;
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257 this->FillHWRect = FillHWRect;
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258
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259 /* The Matrox has accelerated normal and colorkey blits. */
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260 this->info.blit_hw = 1;
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261 /* The Millenium I appears to do the colorkey test a word
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262 at a time, and the transparency is intverted. (?)
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263 */
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264 if ( card != FB_ACCEL_MATROX_MGA2064W ) {
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265 this->info.blit_hw_CC = 1;
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266 this->SetHWColorKey = SetHWColorKey;
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267 }
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268
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269 #if 0 /* Not yet implemented? */
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270 /* The Matrox G200/G400 has an accelerated alpha blit */
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271 if ( (card == FB_ACCEL_MATROX_MGAG200)
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272 || (card == FB_ACCEL_MATROX_MGAG400)
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273 ) {
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274 this->info.blit_hw_A = 1;
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275 this->SetHWAlpha = SetHWAlpha;
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276 }
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277 #endif
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278 }
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