stw_pixelformat.c revision e968975cb57eb854769292f7c6ff773c64a386c3
1/************************************************************************** 2 * 3 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. 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 TUNGSTEN GRAPHICS 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 42struct 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 59struct 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 72static const struct stw_pf_color_info 73stw_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 { PIPE_FORMAT_B5G6R5_UNORM, { 5, 6, 5, 0}, {11, 5, 0, 0} }, 78 /* alpha */ 79 { PIPE_FORMAT_B8G8R8A8_UNORM, { 8, 8, 8, 8}, {16, 8, 0, 24} }, 80 { PIPE_FORMAT_A8R8G8B8_UNORM, { 8, 8, 8, 8}, { 8, 16, 24, 0} }, 81#if 0 82 { PIPE_FORMAT_R10G10B10A2_UNORM, {10, 10, 10, 2}, { 0, 10, 20, 30} }, 83#endif 84 { PIPE_FORMAT_B5G5R5A1_UNORM, { 5, 5, 5, 1}, {10, 5, 0, 15} }, 85 { PIPE_FORMAT_B4G4R4A4_UNORM, { 4, 4, 4, 4}, {16, 4, 0, 12} } 86}; 87 88 89static const struct stw_pf_depth_info 90stw_pf_depth_stencil[] = { 91 /* pure depth */ 92 { PIPE_FORMAT_Z32_UNORM, {32, 0} }, 93 { PIPE_FORMAT_X8Z24_UNORM, {24, 0} }, 94 { PIPE_FORMAT_Z24X8_UNORM, {24, 0} }, 95 { PIPE_FORMAT_Z16_UNORM, {16, 0} }, 96 /* combined depth-stencil */ 97 { PIPE_FORMAT_Z24_UNORM_S8_USCALED, {24, 8} }, 98 { PIPE_FORMAT_S8_USCALED_Z24_UNORM, {24, 8} } 99}; 100 101 102static const boolean 103stw_pf_doublebuffer[] = { 104 FALSE, 105 TRUE, 106}; 107 108 109const unsigned 110stw_pf_multisample[] = { 111 0, 112 4 113}; 114 115 116static void 117stw_pixelformat_add( 118 struct stw_device *stw_dev, 119 const struct stw_pf_color_info *color, 120 const struct stw_pf_depth_info *depth, 121 unsigned accum, 122 boolean doublebuffer, 123 unsigned samples ) 124{ 125 boolean extended = FALSE; 126 struct stw_pixelformat_info *pfi; 127 128 assert(stw_dev->pixelformat_extended_count < STW_MAX_PIXELFORMATS); 129 if(stw_dev->pixelformat_extended_count >= STW_MAX_PIXELFORMATS) 130 return; 131 132 assert(util_format_get_component_bits(color->format, UTIL_FORMAT_COLORSPACE_RGB, 0) == color->bits.red); 133 assert(util_format_get_component_bits(color->format, UTIL_FORMAT_COLORSPACE_RGB, 1) == color->bits.green); 134 assert(util_format_get_component_bits(color->format, UTIL_FORMAT_COLORSPACE_RGB, 2) == color->bits.blue); 135 assert(util_format_get_component_bits(color->format, UTIL_FORMAT_COLORSPACE_RGB, 3) == color->bits.alpha); 136 assert(util_format_get_component_bits(depth->format, UTIL_FORMAT_COLORSPACE_ZS, 0) == depth->bits.depth); 137 assert(util_format_get_component_bits(depth->format, UTIL_FORMAT_COLORSPACE_ZS, 1) == depth->bits.stencil); 138 139 pfi = &stw_dev->pixelformats[stw_dev->pixelformat_extended_count]; 140 141 memset(pfi, 0, sizeof *pfi); 142 143 pfi->pfd.nSize = sizeof pfi->pfd; 144 pfi->pfd.nVersion = 1; 145 146 pfi->pfd.dwFlags = PFD_SUPPORT_OPENGL; 147 148 /* TODO: also support non-native pixel formats */ 149 pfi->pfd.dwFlags |= PFD_DRAW_TO_WINDOW; 150 151 /* See http://www.opengl.org/pipeline/article/vol003_7/ */ 152 pfi->pfd.dwFlags |= PFD_SUPPORT_COMPOSITION; 153 154 if (doublebuffer) 155 pfi->pfd.dwFlags |= PFD_DOUBLEBUFFER | PFD_SWAP_COPY; 156 157 pfi->pfd.iPixelType = PFD_TYPE_RGBA; 158 159 pfi->pfd.cColorBits = color->bits.red + color->bits.green + color->bits.blue + color->bits.alpha; 160 pfi->pfd.cRedBits = color->bits.red; 161 pfi->pfd.cRedShift = color->shift.red; 162 pfi->pfd.cGreenBits = color->bits.green; 163 pfi->pfd.cGreenShift = color->shift.green; 164 pfi->pfd.cBlueBits = color->bits.blue; 165 pfi->pfd.cBlueShift = color->shift.blue; 166 pfi->pfd.cAlphaBits = color->bits.alpha; 167 pfi->pfd.cAlphaShift = color->shift.alpha; 168 pfi->pfd.cAccumBits = 4*accum; 169 pfi->pfd.cAccumRedBits = accum; 170 pfi->pfd.cAccumGreenBits = accum; 171 pfi->pfd.cAccumBlueBits = accum; 172 pfi->pfd.cAccumAlphaBits = accum; 173 pfi->pfd.cDepthBits = depth->bits.depth; 174 pfi->pfd.cStencilBits = depth->bits.stencil; 175 pfi->pfd.cAuxBuffers = 0; 176 pfi->pfd.iLayerType = 0; 177 pfi->pfd.bReserved = 0; 178 pfi->pfd.dwLayerMask = 0; 179 pfi->pfd.dwVisibleMask = 0; 180 pfi->pfd.dwDamageMask = 0; 181 182 /* 183 * since state trackers can allocate depth/stencil/accum buffers, we provide 184 * only color buffers here 185 */ 186 pfi->stvis.buffer_mask = ST_ATTACHMENT_FRONT_LEFT_MASK; 187 if (doublebuffer) 188 pfi->stvis.buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK; 189 190 pfi->stvis.color_format = color->format; 191 pfi->stvis.depth_stencil_format = depth->format; 192 193 pfi->stvis.accum_format = (accum) ? 194 PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE; 195 196 pfi->stvis.samples = samples; 197 pfi->stvis.render_buffer = ST_ATTACHMENT_INVALID; 198 199 ++stw_dev->pixelformat_extended_count; 200 201 if(!extended) { 202 ++stw_dev->pixelformat_count; 203 assert(stw_dev->pixelformat_count == stw_dev->pixelformat_extended_count); 204 } 205} 206 207void 208stw_pixelformat_init( void ) 209{ 210 struct pipe_screen *screen = stw_dev->screen; 211 unsigned i, j, k, l; 212 213 assert( !stw_dev->pixelformat_count ); 214 assert( !stw_dev->pixelformat_extended_count ); 215 216 for(i = 0; i < Elements(stw_pf_multisample); ++i) { 217 unsigned samples = stw_pf_multisample[i]; 218 219 /* FIXME: re-enabled MSAA when we can query it */ 220 if(samples) 221 continue; 222 223 for(j = 0; j < Elements(stw_pf_color); ++j) { 224 const struct stw_pf_color_info *color = &stw_pf_color[j]; 225 226 if(!screen->is_format_supported(screen, color->format, PIPE_TEXTURE_2D, 227 0, PIPE_BIND_RENDER_TARGET | 228 PIPE_BIND_DISPLAY_TARGET)) 229 continue; 230 231 for(k = 0; k < Elements(stw_pf_doublebuffer); ++k) { 232 unsigned doublebuffer = stw_pf_doublebuffer[k]; 233 234 for(l = 0; l < Elements(stw_pf_depth_stencil); ++l) { 235 const struct stw_pf_depth_info *depth = &stw_pf_depth_stencil[l]; 236 237 if(!screen->is_format_supported(screen, depth->format, PIPE_TEXTURE_2D, 238 0, PIPE_BIND_DEPTH_STENCIL)) 239 continue; 240 241 stw_pixelformat_add( stw_dev, color, depth, 0, doublebuffer, samples ); 242 stw_pixelformat_add( stw_dev, color, depth, 16, doublebuffer, samples ); 243 } 244 } 245 } 246 } 247 248 assert( stw_dev->pixelformat_count <= stw_dev->pixelformat_extended_count ); 249 assert( stw_dev->pixelformat_extended_count <= STW_MAX_PIXELFORMATS ); 250} 251 252uint 253stw_pixelformat_get_count( void ) 254{ 255 return stw_dev->pixelformat_count; 256} 257 258uint 259stw_pixelformat_get_extended_count( void ) 260{ 261 return stw_dev->pixelformat_extended_count; 262} 263 264const struct stw_pixelformat_info * 265stw_pixelformat_get_info( uint index ) 266{ 267 assert( index < stw_dev->pixelformat_extended_count ); 268 269 return &stw_dev->pixelformats[index]; 270} 271 272 273LONG APIENTRY 274DrvDescribePixelFormat( 275 HDC hdc, 276 INT iPixelFormat, 277 ULONG cjpfd, 278 PIXELFORMATDESCRIPTOR *ppfd ) 279{ 280 uint count; 281 uint index; 282 const struct stw_pixelformat_info *pfi; 283 284 (void) hdc; 285 286 if (!stw_dev) 287 return 0; 288 289 count = stw_pixelformat_get_extended_count(); 290 index = (uint) iPixelFormat - 1; 291 292 if (ppfd == NULL) 293 return count; 294 if (index >= count || cjpfd != sizeof( PIXELFORMATDESCRIPTOR )) 295 return 0; 296 297 pfi = stw_pixelformat_get_info( index ); 298 299 memcpy(ppfd, &pfi->pfd, sizeof( PIXELFORMATDESCRIPTOR )); 300 301 return count; 302} 303 304BOOL APIENTRY 305DrvDescribeLayerPlane( 306 HDC hdc, 307 INT iPixelFormat, 308 INT iLayerPlane, 309 UINT nBytes, 310 LPLAYERPLANEDESCRIPTOR plpd ) 311{ 312 assert(0); 313 return FALSE; 314} 315 316int APIENTRY 317DrvGetLayerPaletteEntries( 318 HDC hdc, 319 INT iLayerPlane, 320 INT iStart, 321 INT cEntries, 322 COLORREF *pcr ) 323{ 324 assert(0); 325 return 0; 326} 327 328int APIENTRY 329DrvSetLayerPaletteEntries( 330 HDC hdc, 331 INT iLayerPlane, 332 INT iStart, 333 INT cEntries, 334 CONST COLORREF *pcr ) 335{ 336 assert(0); 337 return 0; 338} 339 340BOOL APIENTRY 341DrvRealizeLayerPalette( 342 HDC hdc, 343 INT iLayerPlane, 344 BOOL bRealize ) 345{ 346 assert(0); 347 return FALSE; 348} 349 350/* Only used by the wgl code, but have it here to avoid exporting the 351 * pixelformat.h functionality. 352 */ 353int stw_pixelformat_choose( HDC hdc, 354 CONST PIXELFORMATDESCRIPTOR *ppfd ) 355{ 356 uint count; 357 uint index; 358 uint bestindex; 359 uint bestdelta; 360 361 (void) hdc; 362 363 count = stw_pixelformat_get_count(); 364 bestindex = count; 365 bestdelta = ~0U; 366 367 for (index = 0; index < count; index++) { 368 uint delta = 0; 369 const struct stw_pixelformat_info *pfi = stw_pixelformat_get_info( index ); 370 371 if (!(ppfd->dwFlags & PFD_DOUBLEBUFFER_DONTCARE) && 372 !!(ppfd->dwFlags & PFD_DOUBLEBUFFER) != 373 !!(pfi->pfd.dwFlags & PFD_DOUBLEBUFFER)) 374 continue; 375 376 /* FIXME: Take in account individual channel bits */ 377 if (ppfd->cColorBits != pfi->pfd.cColorBits) 378 delta += 8; 379 380 if (ppfd->cDepthBits != pfi->pfd.cDepthBits) 381 delta += 4; 382 383 if (ppfd->cStencilBits != pfi->pfd.cStencilBits) 384 delta += 2; 385 386 if (ppfd->cAlphaBits != pfi->pfd.cAlphaBits) 387 delta++; 388 389 if (delta < bestdelta) { 390 bestindex = index; 391 bestdelta = delta; 392 if (bestdelta == 0) 393 break; 394 } 395 } 396 397 if (bestindex == count) 398 return 0; 399 400 return bestindex + 1; 401} 402