Mercurial > sdl-ios-xcode
annotate src/video/fbcon/SDL_fbmatrox.c @ 1840:c6a447c98584
Updated docs for SDL 1.2.10 release
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 16 May 2006 08:00:25 +0000 |
| parents | 7a36f01acf71 |
| children | 782fd950bd46 c121d94672cb a1b03ba2fcd0 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 SDL - Simple DirectMedia Layer |
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 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. |
| 0 | 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. |
| 0 | 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 |
| 0 | 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" |
| 0 | 23 |
| 24 #include "SDL_video.h" | |
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25 #include "../SDL_blit.h" |
| 0 | 26 #include "SDL_fbmatrox.h" |
| 27 #include "matrox_mmio.h" | |
| 28 | |
| 29 | |
| 30 /* Wait for vertical retrace - taken from the XFree86 Matrox driver */ | |
| 31 static void WaitVBL(_THIS) | |
| 32 { | |
| 33 int count; | |
| 34 | |
| 35 /* find start of retrace */ | |
| 36 mga_waitidle(); | |
| 37 while ( (mga_in8(0x1FDA) & 0x08) ) | |
| 38 ; | |
| 39 while ( !(mga_in8(0x1FDA) & 0x08) ) | |
| 40 ; | |
| 41 /* wait until we're past the start */ | |
| 42 count = mga_in32(0x1E20) + 2; | |
| 43 while ( mga_in32(0x1E20) < count ) | |
| 44 ; | |
| 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 } |
| 0 | 50 |
| 51 /* Sets video mem colorkey and accelerated blit function */ | |
| 52 static int SetHWColorKey(_THIS, SDL_Surface *surface, Uint32 key) | |
| 53 { | |
| 54 return(0); | |
| 55 } | |
| 56 | |
| 57 /* Sets per surface hardware alpha value */ | |
| 20 | 58 #if 0 |
| 0 | 59 static int SetHWAlpha(_THIS, SDL_Surface *surface, Uint8 value) |
| 60 { | |
| 61 return(0); | |
| 62 } | |
| 20 | 63 #endif |
| 0 | 64 |
| 65 static int FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color) | |
| 66 { | |
| 67 int dstX, dstY; | |
| 68 Uint32 fxbndry; | |
| 69 Uint32 ydstlen; | |
| 70 Uint32 fillop; | |
| 71 | |
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72 /* Don't blit to the display surface when switched away */ |
| 1780 | 73 if ( switched_away ) { |
| 74 return -2; /* no hardware access */ | |
| 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 |
| 0 | 80 switch (dst->format->BytesPerPixel) { |
| 81 case 1: | |
| 82 color |= (color<<8); | |
| 83 case 2: | |
| 84 color |= (color<<16); | |
| 85 break; | |
| 86 } | |
| 87 | |
| 88 /* Set up the X/Y base coordinates */ | |
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89 FB_dst_to_xy(this, dst, &dstX, &dstY); |
| 0 | 90 |
| 91 /* Adjust for the current rectangle */ | |
| 92 dstX += rect->x; | |
| 93 dstY += rect->y; | |
| 94 | |
| 95 /* Set up the X boundaries */ | |
| 96 fxbndry = (dstX | ((dstX+rect->w) << 16)); | |
| 97 | |
| 98 /* Set up the Y boundaries */ | |
| 99 ydstlen = (rect->h | (dstY << 16)); | |
| 100 | |
| 101 /* Set up for color fill operation */ | |
| 102 fillop = MGADWG_TRAP | MGADWG_SOLID | | |
| 103 MGADWG_ARZERO | MGADWG_SGNZERO | MGADWG_SHIFTZERO; | |
| 104 | |
| 105 /* Execute the operations! */ | |
| 106 mga_wait(5); | |
| 107 mga_out32(MGAREG_DWGCTL, fillop | MGADWG_REPLACE); | |
| 108 mga_out32(MGAREG_FCOL, color); | |
| 109 mga_out32(MGAREG_FXBNDRY, fxbndry); | |
| 110 mga_out32(MGAREG_YDSTLEN + MGAREG_EXEC, ydstlen); | |
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111 |
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112 FB_AddBusySurface(dst); |
| 0 | 113 |
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114 if ( dst == this->screen ) { |
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115 SDL_mutexV(hw_lock); |
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116 } |
| 0 | 117 return(0); |
| 118 } | |
| 119 | |
| 120 static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect, | |
| 121 SDL_Surface *dst, SDL_Rect *dstrect) | |
| 122 { | |
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123 SDL_VideoDevice *this = current_video; |
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124 int pitch, w, h; |
| 0 | 125 int srcX, srcY; |
| 126 int dstX, dstY; | |
| 127 Uint32 sign; | |
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128 Uint32 start, stop; |
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129 int skip; |
| 0 | 130 Uint32 blitop; |
| 131 | |
| 132 /* FIXME: For now, only blit to display surface */ | |
| 133 if ( dst->pitch != SDL_VideoSurface->pitch ) { | |
| 134 return(src->map->sw_blit(src, srcrect, dst, dstrect)); | |
| 135 } | |
| 136 | |
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137 /* Don't blit to the display surface when switched away */ |
| 1780 | 138 if ( switched_away ) { |
| 139 return -2; /* no hardware access */ | |
| 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 |
| 0 | 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); |
| 0 | 150 |
| 151 /* Adjust for the current blit rectangles */ | |
| 152 srcX += srcrect->x; | |
| 153 srcY += srcrect->y; | |
| 154 dstX += dstrect->x; | |
| 155 dstY += dstrect->y; | |
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156 pitch = dst->pitch/dst->format->BytesPerPixel; |
| 0 | 157 |
| 158 /* Set up the blit direction (sign) flags */ | |
| 159 sign = 0; | |
| 160 if ( srcX < dstX ) { | |
| 161 sign |= 1; | |
| 162 } | |
| 163 if ( srcY < dstY ) { | |
| 164 sign |= 4; | |
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165 srcY += (h - 1); |
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166 dstY += (h - 1); |
| 0 | 167 } |
| 168 | |
| 169 /* Set up the blit source row start, end, and skip (in pixels) */ | |
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170 stop = start = (srcY * pitch) + srcX; |
| 0 | 171 if ( srcX < dstX ) { |
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172 start += (w - 1); |
| 0 | 173 } else { |
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174 stop += (w - 1); |
| 0 | 175 } |
| 176 if ( srcY < dstY ) { | |
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177 skip = -pitch; |
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178 } else { |
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179 skip = pitch; |
| 0 | 180 } |
| 181 | |
| 182 /* Set up the blit operation */ | |
| 183 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { | |
| 184 Uint32 colorkey; | |
| 185 | |
| 186 blitop = MGADWG_BFCOL | MGADWG_BITBLT | | |
| 187 MGADWG_SHIFTZERO | MGADWG_RSTR | (0x0C << 16) | | |
| 188 MGADWG_TRANSC; | |
| 189 | |
| 190 colorkey = src->format->colorkey; | |
| 191 switch (dst->format->BytesPerPixel) { | |
| 192 case 1: | |
| 193 colorkey |= (colorkey<<8); | |
| 194 case 2: | |
| 195 colorkey |= (colorkey<<16); | |
| 196 break; | |
| 197 } | |
| 198 mga_wait(2); | |
| 199 mga_out32(MGAREG_FCOL, colorkey); | |
| 200 mga_out32(MGAREG_BCOL, 0xFFFFFFFF); | |
| 201 } else { | |
| 202 blitop = MGADWG_BFCOL | MGADWG_BITBLT | | |
| 203 MGADWG_SHIFTZERO | MGADWG_RSTR | (0x0C << 16); | |
| 204 } | |
| 205 mga_wait(7); | |
| 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); |
| 0 | 212 mga_out32(MGAREG_DWGCTL + MGAREG_EXEC, blitop); |
| 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 } |
| 0 | 220 return(0); |
| 221 } | |
| 222 | |
| 223 static int CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst) | |
| 224 { | |
| 225 int accelerated; | |
| 226 | |
| 227 /* Set initial acceleration on */ | |
| 228 src->flags |= SDL_HWACCEL; | |
| 229 | |
| 230 /* Set the surface attributes */ | |
| 231 if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) { | |
| 232 if ( ! this->info.blit_hw_A ) { | |
| 233 src->flags &= ~SDL_HWACCEL; | |
| 234 } | |
| 235 } | |
| 236 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { | |
| 237 if ( ! this->info.blit_hw_CC ) { | |
| 238 src->flags &= ~SDL_HWACCEL; | |
| 239 } | |
| 240 } | |
| 241 | |
| 242 /* Check to see if final surface blit is accelerated */ | |
| 243 accelerated = !!(src->flags & SDL_HWACCEL); | |
| 244 if ( accelerated ) { | |
| 245 src->map->hw_blit = HWAccelBlit; | |
| 246 } | |
| 247 return(accelerated); | |
| 248 } | |
| 249 | |
| 250 void FB_MatroxAccel(_THIS, __u32 card) | |
| 251 { | |
| 252 /* We have hardware accelerated surface functions */ | |
| 253 this->CheckHWBlit = CheckHWBlit; | |
| 254 wait_vbl = WaitVBL; | |
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255 wait_idle = WaitIdle; |
| 0 | 256 |
| 257 /* The Matrox has an accelerated color fill */ | |
| 258 this->info.blit_fill = 1; | |
| 259 this->FillHWRect = FillHWRect; | |
| 260 | |
| 261 /* The Matrox has accelerated normal and colorkey blits. */ | |
| 262 this->info.blit_hw = 1; | |
| 263 /* The Millenium I appears to do the colorkey test a word | |
| 264 at a time, and the transparency is intverted. (?) | |
| 265 */ | |
| 266 if ( card != FB_ACCEL_MATROX_MGA2064W ) { | |
| 267 this->info.blit_hw_CC = 1; | |
| 268 this->SetHWColorKey = SetHWColorKey; | |
| 269 } | |
| 270 | |
| 271 #if 0 /* Not yet implemented? */ | |
| 272 /* The Matrox G200/G400 has an accelerated alpha blit */ | |
| 273 if ( (card == FB_ACCEL_MATROX_MGAG200) | |
| 274 || (card == FB_ACCEL_MATROX_MGAG400) | |
| 275 ) { | |
| 276 this->info.blit_hw_A = 1; | |
| 277 this->SetHWAlpha = SetHWAlpha; | |
| 278 } | |
| 279 #endif | |
| 280 } |