1 /************************************************************************** 2 * 3 * Copyright 2008 VMware, Inc. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR 22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28 #include "pipe/p_format.h" 29 #include "pipe/p_defines.h" 30 #include "pipe/p_screen.h" 31 32 #include "util/u_format.h" 33 #include "util/u_debug.h" 34 #include "util/u_memory.h" 35 36 #include "stw_icd.h" 37 #include "stw_device.h" 38 #include "stw_pixelformat.h" 39 #include "stw_tls.h" 40 41 42 struct stw_pf_color_info 43 { 44 enum pipe_format format; 45 struct { 46 unsigned char red; 47 unsigned char green; 48 unsigned char blue; 49 unsigned char alpha; 50 } bits; 51 struct { 52 unsigned char red; 53 unsigned char green; 54 unsigned char blue; 55 unsigned char alpha; 56 } shift; 57 }; 58 59 struct stw_pf_depth_info 60 { 61 enum pipe_format format; 62 struct { 63 unsigned char depth; 64 unsigned char stencil; 65 } bits; 66 }; 67 68 69 /* NOTE: order matters, since in otherwise equal circumstances the first 70 * format listed will get chosen */ 71 72 static const struct stw_pf_color_info 73 stw_pf_color[] = { 74 /* no-alpha */ 75 { PIPE_FORMAT_B8G8R8X8_UNORM, { 8, 8, 8, 0}, {16, 8, 0, 0} }, 76 { PIPE_FORMAT_X8R8G8B8_UNORM, { 8, 8, 8, 0}, { 8, 16, 24, 0} }, 77 /* alpha */ 78 { PIPE_FORMAT_B8G8R8A8_UNORM, { 8, 8, 8, 8}, {16, 8, 0, 24} }, 79 { PIPE_FORMAT_A8R8G8B8_UNORM, { 8, 8, 8, 8}, { 8, 16, 24, 0} }, 80 /* shallow bit depths */ 81 { PIPE_FORMAT_B5G6R5_UNORM, { 5, 6, 5, 0}, {11, 5, 0, 0} }, 82 #if 0 83 { PIPE_FORMAT_R10G10B10A2_UNORM, {10, 10, 10, 2}, { 0, 10, 20, 30} }, 84 #endif 85 { PIPE_FORMAT_B5G5R5A1_UNORM, { 5, 5, 5, 1}, {10, 5, 0, 15} }, 86 { PIPE_FORMAT_B4G4R4A4_UNORM, { 4, 4, 4, 4}, {16, 4, 0, 12} } 87 }; 88 89 static const struct stw_pf_color_info 90 stw_pf_color_extended[] = { 91 { PIPE_FORMAT_R32G32B32A32_FLOAT, { 32, 32, 32, 32}, { 0, 32, 64, 96} } 92 }; 93 94 static const struct stw_pf_depth_info 95 stw_pf_depth_stencil[] = { 96 /* pure depth */ 97 { PIPE_FORMAT_Z32_UNORM, {32, 0} }, 98 { PIPE_FORMAT_X8Z24_UNORM, {24, 0} }, 99 { PIPE_FORMAT_Z24X8_UNORM, {24, 0} }, 100 { PIPE_FORMAT_Z16_UNORM, {16, 0} }, 101 /* combined depth-stencil */ 102 { PIPE_FORMAT_Z24_UNORM_S8_UINT, {24, 8} }, 103 { PIPE_FORMAT_S8_UINT_Z24_UNORM, {24, 8} } 104 }; 105 106 107 static const boolean 108 stw_pf_doublebuffer[] = { 109 FALSE, 110 TRUE, 111 }; 112 113 114 const unsigned 115 stw_pf_multisample[] = { 116 0, 117 4, 118 8, 119 16 120 }; 121 122 123 static void 124 stw_pixelformat_add( 125 struct stw_device *stw_dev, 126 boolean extended, 127 const struct stw_pf_color_info *color, 128 const struct stw_pf_depth_info *depth, 129 unsigned accum, 130 boolean doublebuffer, 131 unsigned samples ) 132 { 133 struct stw_pixelformat_info *pfi; 134 135 assert(stw_dev->pixelformat_extended_count < STW_MAX_PIXELFORMATS); 136 if(stw_dev->pixelformat_extended_count >= STW_MAX_PIXELFORMATS) 137 return; 138 139 assert(util_format_get_component_bits(color->format, UTIL_FORMAT_COLORSPACE_RGB, 0) == color->bits.red); 140 assert(util_format_get_component_bits(color->format, UTIL_FORMAT_COLORSPACE_RGB, 1) == color->bits.green); 141 assert(util_format_get_component_bits(color->format, UTIL_FORMAT_COLORSPACE_RGB, 2) == color->bits.blue); 142 assert(util_format_get_component_bits(color->format, UTIL_FORMAT_COLORSPACE_RGB, 3) == color->bits.alpha); 143 assert(util_format_get_component_bits(depth->format, UTIL_FORMAT_COLORSPACE_ZS, 0) == depth->bits.depth); 144 assert(util_format_get_component_bits(depth->format, UTIL_FORMAT_COLORSPACE_ZS, 1) == depth->bits.stencil); 145 146 pfi = &stw_dev->pixelformats[stw_dev->pixelformat_extended_count]; 147 148 memset(pfi, 0, sizeof *pfi); 149 150 pfi->pfd.nSize = sizeof pfi->pfd; 151 pfi->pfd.nVersion = 1; 152 153 pfi->pfd.dwFlags = PFD_SUPPORT_OPENGL; 154 155 /* TODO: also support non-native pixel formats */ 156 if (!extended) { 157 pfi->pfd.dwFlags |= PFD_DRAW_TO_WINDOW; 158 } 159 160 /* See http://www.opengl.org/pipeline/article/vol003_7/ */ 161 pfi->pfd.dwFlags |= PFD_SUPPORT_COMPOSITION; 162 163 if (doublebuffer) 164 pfi->pfd.dwFlags |= PFD_DOUBLEBUFFER | PFD_SWAP_EXCHANGE; 165 166 pfi->pfd.iPixelType = PFD_TYPE_RGBA; 167 168 pfi->pfd.cColorBits = color->bits.red + color->bits.green + color->bits.blue + color->bits.alpha; 169 pfi->pfd.cRedBits = color->bits.red; 170 pfi->pfd.cRedShift = color->shift.red; 171 pfi->pfd.cGreenBits = color->bits.green; 172 pfi->pfd.cGreenShift = color->shift.green; 173 pfi->pfd.cBlueBits = color->bits.blue; 174 pfi->pfd.cBlueShift = color->shift.blue; 175 pfi->pfd.cAlphaBits = color->bits.alpha; 176 pfi->pfd.cAlphaShift = color->shift.alpha; 177 pfi->pfd.cAccumBits = 4*accum; 178 pfi->pfd.cAccumRedBits = accum; 179 pfi->pfd.cAccumGreenBits = accum; 180 pfi->pfd.cAccumBlueBits = accum; 181 pfi->pfd.cAccumAlphaBits = accum; 182 pfi->pfd.cDepthBits = depth->bits.depth; 183 pfi->pfd.cStencilBits = depth->bits.stencil; 184 pfi->pfd.cAuxBuffers = 0; 185 pfi->pfd.iLayerType = 0; 186 pfi->pfd.bReserved = 0; 187 pfi->pfd.dwLayerMask = 0; 188 pfi->pfd.dwVisibleMask = 0; 189 pfi->pfd.dwDamageMask = 0; 190 191 /* 192 * since state trackers can allocate depth/stencil/accum buffers, we provide 193 * only color buffers here 194 */ 195 pfi->stvis.buffer_mask = ST_ATTACHMENT_FRONT_LEFT_MASK; 196 if (doublebuffer) 197 pfi->stvis.buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK; 198 199 pfi->stvis.color_format = color->format; 200 pfi->stvis.depth_stencil_format = depth->format; 201 202 pfi->stvis.accum_format = (accum) ? 203 PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE; 204 205 pfi->stvis.samples = samples; 206 pfi->stvis.render_buffer = ST_ATTACHMENT_INVALID; 207 208 /* WGL_ARB_render_texture */ 209 if (color->bits.alpha) 210 pfi->bindToTextureRGBA = TRUE; 211 else 212 pfi->bindToTextureRGB = TRUE; 213 214 ++stw_dev->pixelformat_extended_count; 215 216 if(!extended) { 217 ++stw_dev->pixelformat_count; 218 assert(stw_dev->pixelformat_count == stw_dev->pixelformat_extended_count); 219 } 220 } 221 222 223 /** 224 * Add the depth/stencil/accum/ms variants for a list of color formats. 225 */ 226 static unsigned 227 add_color_format_variants(const struct stw_pf_color_info *color_formats, 228 unsigned num_color_formats, 229 boolean extended) 230 { 231 struct pipe_screen *screen = stw_dev->screen; 232 unsigned cfmt, ms, db, ds, acc; 233 unsigned bind_flags = PIPE_BIND_RENDER_TARGET; 234 unsigned num_added = 0; 235 int force_samples = 0; 236 237 /* Since GLUT for Windows doesn't support MSAA we have an env var 238 * to force all pixel formats to have a particular number of samples. 239 */ 240 { 241 const char *samples= getenv("SVGA_FORCE_MSAA"); 242 if (samples) 243 force_samples = atoi(samples); 244 } 245 246 if (!extended) { 247 bind_flags |= PIPE_BIND_DISPLAY_TARGET; 248 } 249 250 for (ms = 0; ms < ARRAY_SIZE(stw_pf_multisample); ms++) { 251 unsigned samples = stw_pf_multisample[ms]; 252 253 if (force_samples && samples != force_samples) 254 continue; 255 256 for (cfmt = 0; cfmt < num_color_formats; cfmt++) { 257 if (!screen->is_format_supported(screen, color_formats[cfmt].format, 258 PIPE_TEXTURE_2D, samples, 259 bind_flags)) { 260 continue; 261 } 262 263 for (db = 0; db < ARRAY_SIZE(stw_pf_doublebuffer); db++) { 264 unsigned doublebuffer = stw_pf_doublebuffer[db]; 265 266 for (ds = 0; ds < ARRAY_SIZE(stw_pf_depth_stencil); ds++) { 267 const struct stw_pf_depth_info *depth = &stw_pf_depth_stencil[ds]; 268 269 if (!screen->is_format_supported(screen, depth->format, 270 PIPE_TEXTURE_2D, samples, 271 PIPE_BIND_DEPTH_STENCIL)) { 272 continue; 273 } 274 275 for (acc = 0; acc < 2; acc++) { 276 stw_pixelformat_add(stw_dev, extended, &color_formats[cfmt], 277 depth, 278 acc * 16, doublebuffer, samples); 279 num_added++; 280 } 281 } 282 } 283 } 284 } 285 286 return num_added; 287 } 288 289 290 void 291 stw_pixelformat_init( void ) 292 { 293 unsigned num_formats; 294 295 assert( !stw_dev->pixelformat_count ); 296 assert( !stw_dev->pixelformat_extended_count ); 297 298 /* normal, displayable formats */ 299 num_formats = add_color_format_variants(stw_pf_color, 300 ARRAY_SIZE(stw_pf_color), FALSE); 301 assert(num_formats > 0); 302 303 /* extended, pbuffer-only formats */ 304 add_color_format_variants(stw_pf_color_extended, 305 ARRAY_SIZE(stw_pf_color_extended), TRUE); 306 307 assert( stw_dev->pixelformat_count <= stw_dev->pixelformat_extended_count ); 308 assert( stw_dev->pixelformat_extended_count <= STW_MAX_PIXELFORMATS ); 309 } 310 311 uint 312 stw_pixelformat_get_count( void ) 313 { 314 return stw_dev->pixelformat_count; 315 } 316 317 uint 318 stw_pixelformat_get_extended_count( void ) 319 { 320 return stw_dev->pixelformat_extended_count; 321 } 322 323 const struct stw_pixelformat_info * 324 stw_pixelformat_get_info( int iPixelFormat ) 325 { 326 unsigned index; 327 328 if (iPixelFormat <= 0) { 329 return NULL; 330 } 331 332 index = iPixelFormat - 1; 333 if (index >= stw_dev->pixelformat_extended_count) { 334 return NULL; 335 } 336 337 return &stw_dev->pixelformats[index]; 338 } 339 340 341 LONG APIENTRY 342 DrvDescribePixelFormat( 343 HDC hdc, 344 INT iPixelFormat, 345 ULONG cjpfd, 346 PIXELFORMATDESCRIPTOR *ppfd ) 347 { 348 uint count; 349 const struct stw_pixelformat_info *pfi; 350 351 (void) hdc; 352 353 if (!stw_dev) 354 return 0; 355 356 count = stw_pixelformat_get_count(); 357 358 if (ppfd == NULL) 359 return count; 360 if (cjpfd != sizeof( PIXELFORMATDESCRIPTOR )) 361 return 0; 362 363 pfi = stw_pixelformat_get_info( iPixelFormat ); 364 if (!pfi) { 365 return 0; 366 } 367 368 memcpy(ppfd, &pfi->pfd, sizeof( PIXELFORMATDESCRIPTOR )); 369 370 return count; 371 } 372 373 BOOL APIENTRY 374 DrvDescribeLayerPlane( 375 HDC hdc, 376 INT iPixelFormat, 377 INT iLayerPlane, 378 UINT nBytes, 379 LPLAYERPLANEDESCRIPTOR plpd ) 380 { 381 assert(0); 382 return FALSE; 383 } 384 385 int APIENTRY 386 DrvGetLayerPaletteEntries( 387 HDC hdc, 388 INT iLayerPlane, 389 INT iStart, 390 INT cEntries, 391 COLORREF *pcr ) 392 { 393 assert(0); 394 return 0; 395 } 396 397 int APIENTRY 398 DrvSetLayerPaletteEntries( 399 HDC hdc, 400 INT iLayerPlane, 401 INT iStart, 402 INT cEntries, 403 CONST COLORREF *pcr ) 404 { 405 assert(0); 406 return 0; 407 } 408 409 BOOL APIENTRY 410 DrvRealizeLayerPalette( 411 HDC hdc, 412 INT iLayerPlane, 413 BOOL bRealize ) 414 { 415 assert(0); 416 return FALSE; 417 } 418 419 /* Only used by the wgl code, but have it here to avoid exporting the 420 * pixelformat.h functionality. 421 */ 422 int stw_pixelformat_choose( HDC hdc, 423 CONST PIXELFORMATDESCRIPTOR *ppfd ) 424 { 425 uint count; 426 uint index; 427 uint bestindex; 428 uint bestdelta; 429 430 (void) hdc; 431 432 count = stw_pixelformat_get_extended_count(); 433 bestindex = 0; 434 bestdelta = ~0U; 435 436 for (index = 1; index <= count; index++) { 437 uint delta = 0; 438 const struct stw_pixelformat_info *pfi = stw_pixelformat_get_info( index ); 439 440 if (!(ppfd->dwFlags & PFD_DOUBLEBUFFER_DONTCARE) && 441 !!(ppfd->dwFlags & PFD_DOUBLEBUFFER) != 442 !!(pfi->pfd.dwFlags & PFD_DOUBLEBUFFER)) 443 continue; 444 445 /* FIXME: Take in account individual channel bits */ 446 if (ppfd->cColorBits != pfi->pfd.cColorBits) 447 delta += 8; 448 449 if (ppfd->cDepthBits != pfi->pfd.cDepthBits) 450 delta += 4; 451 452 if (ppfd->cStencilBits != pfi->pfd.cStencilBits) 453 delta += 2; 454 455 if (ppfd->cAlphaBits != pfi->pfd.cAlphaBits) 456 delta++; 457 458 if (delta < bestdelta) { 459 bestindex = index; 460 bestdelta = delta; 461 if (bestdelta == 0) 462 break; 463 } 464 } 465 466 return bestindex; 467 } 468