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