1 /* 2 SDL - Simple DirectMedia Layer 3 Copyright (C) 1997-2006 Sam Lantinga 4 5 This library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 This library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with this library; if not, write to the Free Software 17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 18 19 Sam Lantinga 20 slouken (at) libsdl.org 21 */ 22 #include "SDL_config.h" 23 24 #include "SDL_video.h" 25 #include "../SDL_blit.h" 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 } 46 static void WaitIdle(_THIS) 47 { 48 mga_waitidle(); 49 } 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 */ 58 #if 0 59 static int SetHWAlpha(_THIS, SDL_Surface *surface, Uint8 value) 60 { 61 return(0); 62 } 63 #endif 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 72 /* Don't blit to the display surface when switched away */ 73 if ( switched_away ) { 74 return -2; /* no hardware access */ 75 } 76 if ( dst == this->screen ) { 77 SDL_mutexP(hw_lock); 78 } 79 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 */ 89 FB_dst_to_xy(this, dst, &dstX, &dstY); 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); 111 112 FB_AddBusySurface(dst); 113 114 if ( dst == this->screen ) { 115 SDL_mutexV(hw_lock); 116 } 117 return(0); 118 } 119 120 static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect, 121 SDL_Surface *dst, SDL_Rect *dstrect) 122 { 123 SDL_VideoDevice *this = current_video; 124 int pitch, w, h; 125 int srcX, srcY; 126 int dstX, dstY; 127 Uint32 sign; 128 Uint32 start, stop; 129 int skip; 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 } 136 137 /* Don't blit to the display surface when switched away */ 138 if ( switched_away ) { 139 return -2; /* no hardware access */ 140 } 141 if ( dst == this->screen ) { 142 SDL_mutexP(hw_lock); 143 } 144 145 /* Calculate source and destination base coordinates (in pixels) */ 146 w = dstrect->w; 147 h = dstrect->h; 148 FB_dst_to_xy(this, src, &srcX, &srcY); 149 FB_dst_to_xy(this, dst, &dstX, &dstY); 150 151 /* Adjust for the current blit rectangles */ 152 srcX += srcrect->x; 153 srcY += srcrect->y; 154 dstX += dstrect->x; 155 dstY += dstrect->y; 156 pitch = dst->pitch/dst->format->BytesPerPixel; 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; 165 srcY += (h - 1); 166 dstY += (h - 1); 167 } 168 169 /* Set up the blit source row start, end, and skip (in pixels) */ 170 stop = start = (srcY * pitch) + srcX; 171 if ( srcX < dstX ) { 172 start += (w - 1); 173 } else { 174 stop += (w - 1); 175 } 176 if ( srcY < dstY ) { 177 skip = -pitch; 178 } else { 179 skip = pitch; 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); 207 mga_out32(MGAREG_AR3, start); 208 mga_out32(MGAREG_AR0, stop); 209 mga_out32(MGAREG_AR5, skip); 210 mga_out32(MGAREG_FXBNDRY, (dstX | ((dstX + w-1) << 16))); 211 mga_out32(MGAREG_YDSTLEN, (dstY << 16) | h); 212 mga_out32(MGAREG_DWGCTL + MGAREG_EXEC, blitop); 213 214 FB_AddBusySurface(src); 215 FB_AddBusySurface(dst); 216 217 if ( dst == this->screen ) { 218 SDL_mutexV(hw_lock); 219 } 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; 255 wait_idle = WaitIdle; 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 } 281
