utils.c revision cdc920a0
1/* 2 * (C) Copyright IBM Corporation 2002, 2004 3 * All Rights Reserved. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * on the rights to use, copy, modify, merge, publish, distribute, sub 9 * license, and/or sell copies of the Software, and to permit persons to whom 10 * the Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice (including the next 13 * paragraph) shall be included in all copies or substantial portions of the 14 * Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 19 * VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 22 * USE OR OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25/** 26 * \file utils.c 27 * Utility functions for DRI drivers. 28 * 29 * \author Ian Romanick <idr@us.ibm.com> 30 */ 31 32#include <string.h> 33#include <stdlib.h> 34#include "main/mtypes.h" 35#include "main/cpuinfo.h" 36#include "main/extensions.h" 37#include "utils.h" 38 39 40unsigned 41driParseDebugString( const char * debug, 42 const struct dri_debug_control * control ) 43{ 44 unsigned flag; 45 46 47 flag = 0; 48 if ( debug != NULL ) { 49 while( control->string != NULL ) { 50 if ( !strcmp( debug, "all" ) || 51 strstr( debug, control->string ) != NULL ) { 52 flag |= control->flag; 53 } 54 55 control++; 56 } 57 } 58 59 return flag; 60} 61 62 63 64/** 65 * Create the \c GL_RENDERER string for DRI drivers. 66 * 67 * Almost all DRI drivers use a \c GL_RENDERER string of the form: 68 * 69 * "Mesa DRI <chip> <driver date> <AGP speed) <CPU information>" 70 * 71 * Using the supplied chip name, driver data, and AGP speed, this function 72 * creates the string. 73 * 74 * \param buffer Buffer to hold the \c GL_RENDERER string. 75 * \param hardware_name Name of the hardware. 76 * \param driver_date Driver date. 77 * \param agp_mode AGP mode (speed). 78 * 79 * \returns 80 * The length of the string stored in \c buffer. This does \b not include 81 * the terminating \c NUL character. 82 */ 83unsigned 84driGetRendererString( char * buffer, const char * hardware_name, 85 const char * driver_date, GLuint agp_mode ) 86{ 87 unsigned offset; 88 char *cpu; 89 90 offset = sprintf( buffer, "Mesa DRI %s %s", hardware_name, driver_date ); 91 92 /* Append any AGP-specific information. 93 */ 94 switch ( agp_mode ) { 95 case 1: 96 case 2: 97 case 4: 98 case 8: 99 offset += sprintf( & buffer[ offset ], " AGP %ux", agp_mode ); 100 break; 101 102 default: 103 break; 104 } 105 106 /* Append any CPU-specific information. 107 */ 108 cpu = _mesa_get_cpu_string(); 109 if (cpu) { 110 offset += sprintf(buffer + offset, " %s", cpu); 111 free(cpu); 112 } 113 114 return offset; 115} 116 117 118 119 120#define need_GL_ARB_draw_buffers 121#define need_GL_ARB_multisample 122#define need_GL_ARB_texture_compression 123#define need_GL_ARB_transpose_matrix 124#define need_GL_ARB_vertex_buffer_object 125#define need_GL_ARB_window_pos 126#define need_GL_EXT_compiled_vertex_array 127#define need_GL_EXT_multi_draw_arrays 128#define need_GL_EXT_polygon_offset 129#define need_GL_EXT_texture_object 130#define need_GL_EXT_vertex_array 131#define need_GL_IBM_multimode_draw_arrays 132#define need_GL_MESA_window_pos 133 134/* These are needed in *all* drivers because Mesa internally implements 135 * certain functionality in terms of functions provided by these extensions. 136 * For example, glBlendFunc is implemented by calling glBlendFuncSeparateEXT. 137 */ 138#define need_GL_EXT_blend_func_separate 139#define need_GL_NV_vertex_program 140 141#include "main/remap_helper.h" 142 143static const struct dri_extension all_mesa_extensions[] = { 144 { "GL_ARB_draw_buffers", GL_ARB_draw_buffers_functions }, 145 { "GL_ARB_multisample", GL_ARB_multisample_functions }, 146 { "GL_ARB_texture_compression", GL_ARB_texture_compression_functions }, 147 { "GL_ARB_transpose_matrix", GL_ARB_transpose_matrix_functions }, 148 { "GL_ARB_vertex_buffer_object", GL_ARB_vertex_buffer_object_functions}, 149 { "GL_ARB_window_pos", GL_ARB_window_pos_functions }, 150 { "GL_EXT_blend_func_separate", GL_EXT_blend_func_separate_functions }, 151 { "GL_EXT_compiled_vertex_array", GL_EXT_compiled_vertex_array_functions }, 152 { "GL_EXT_multi_draw_arrays", GL_EXT_multi_draw_arrays_functions }, 153 { "GL_EXT_polygon_offset", GL_EXT_polygon_offset_functions }, 154 { "GL_EXT_texture_object", GL_EXT_texture_object_functions }, 155 { "GL_EXT_vertex_array", GL_EXT_vertex_array_functions }, 156 { "GL_IBM_multimode_draw_arrays", GL_IBM_multimode_draw_arrays_functions }, 157 { "GL_MESA_window_pos", GL_MESA_window_pos_functions }, 158 { "GL_NV_vertex_program", GL_NV_vertex_program_functions }, 159 { NULL, NULL } 160}; 161 162 163/** 164 * Enable and map extensions supported by the driver. 165 * 166 * When ctx is NULL, extensions are not enabled, but their functions 167 * are still mapped. When extensions_to_enable is NULL, all static 168 * functions known to mesa core are mapped. 169 * 170 * \bug 171 * ARB_imaging isn't handled properly. In Mesa, enabling ARB_imaging also 172 * enables all the sub-extensions that are folded into it. This means that 173 * we need to add entry-points (via \c driInitSingleExtension) for those 174 * new functions here. 175 */ 176void driInitExtensions( GLcontext * ctx, 177 const struct dri_extension * extensions_to_enable, 178 GLboolean enable_imaging ) 179{ 180 static int first_time = 1; 181 unsigned i; 182 183 if ( first_time ) { 184 first_time = 0; 185 driInitExtensions( NULL, all_mesa_extensions, GL_FALSE ); 186 } 187 188 if ( (ctx != NULL) && enable_imaging ) { 189 _mesa_enable_imaging_extensions( ctx ); 190 } 191 192 /* The caller is too lazy to list any extension */ 193 if ( extensions_to_enable == NULL ) { 194 /* Map the static functions. Together with those mapped by remap 195 * table, this should cover everything mesa core knows. 196 */ 197 _mesa_map_static_functions(); 198 return; 199 } 200 201 for ( i = 0 ; extensions_to_enable[i].name != NULL ; i++ ) { 202 driInitSingleExtension( ctx, & extensions_to_enable[i] ); 203 } 204} 205 206 207 208 209/** 210 * Enable and map functions for a single extension 211 * 212 * \param ctx Context where extension is to be enabled. 213 * \param ext Extension that is to be enabled. 214 * 215 * \sa driInitExtensions, _mesa_enable_extension, _mesa_map_function_array 216 */ 217void driInitSingleExtension( GLcontext * ctx, 218 const struct dri_extension * ext ) 219{ 220 if ( ext->functions != NULL ) { 221 _mesa_map_function_array(ext->functions); 222 } 223 224 if ( ctx != NULL ) { 225 _mesa_enable_extension( ctx, ext->name ); 226 } 227} 228 229 230/** 231 * Utility function used by drivers to test the verions of other components. 232 * 233 * If one of the version requirements is not met, a message is logged using 234 * \c __driUtilMessage. 235 * 236 * \param driver_name Name of the driver. Used in error messages. 237 * \param driActual Actual DRI version supplied __driCreateNewScreen. 238 * \param driExpected Minimum DRI version required by the driver. 239 * \param ddxActual Actual DDX version supplied __driCreateNewScreen. 240 * \param ddxExpected Minimum DDX minor and range of DDX major version required by the driver. 241 * \param drmActual Actual DRM version supplied __driCreateNewScreen. 242 * \param drmExpected Minimum DRM version required by the driver. 243 * 244 * \returns \c GL_TRUE if all version requirements are met. Otherwise, 245 * \c GL_FALSE is returned. 246 * 247 * \sa __driCreateNewScreen, driCheckDriDdxDrmVersions2, __driUtilMessage 248 * 249 * \todo 250 * Now that the old \c driCheckDriDdxDrmVersions function is gone, this 251 * function and \c driCheckDriDdxDrmVersions2 should be renamed. 252 */ 253GLboolean 254driCheckDriDdxDrmVersions3(const char * driver_name, 255 const __DRIversion * driActual, 256 const __DRIversion * driExpected, 257 const __DRIversion * ddxActual, 258 const __DRIutilversion2 * ddxExpected, 259 const __DRIversion * drmActual, 260 const __DRIversion * drmExpected) 261{ 262 static const char format[] = "%s DRI driver expected %s version %d.%d.x " 263 "but got version %d.%d.%d\n"; 264 static const char format2[] = "%s DRI driver expected %s version %d-%d.%d.x " 265 "but got version %d.%d.%d\n"; 266 267 268 /* Check the DRI version */ 269 if ( (driActual->major != driExpected->major) 270 || (driActual->minor < driExpected->minor) ) { 271 fprintf(stderr, format, driver_name, "DRI", 272 driExpected->major, driExpected->minor, 273 driActual->major, driActual->minor, driActual->patch); 274 return GL_FALSE; 275 } 276 277 /* Check that the DDX driver version is compatible */ 278 if ( (ddxActual->major < ddxExpected->major_min) 279 || (ddxActual->major > ddxExpected->major_max) 280 || (ddxActual->minor < ddxExpected->minor) ) { 281 fprintf(stderr, format2, driver_name, "DDX", 282 ddxExpected->major_min, ddxExpected->major_max, ddxExpected->minor, 283 ddxActual->major, ddxActual->minor, ddxActual->patch); 284 return GL_FALSE; 285 } 286 287 /* Check that the DRM driver version is compatible */ 288 if ( (drmActual->major != drmExpected->major) 289 || (drmActual->minor < drmExpected->minor) ) { 290 fprintf(stderr, format, driver_name, "DRM", 291 drmExpected->major, drmExpected->minor, 292 drmActual->major, drmActual->minor, drmActual->patch); 293 return GL_FALSE; 294 } 295 296 return GL_TRUE; 297} 298 299GLboolean 300driCheckDriDdxDrmVersions2(const char * driver_name, 301 const __DRIversion * driActual, 302 const __DRIversion * driExpected, 303 const __DRIversion * ddxActual, 304 const __DRIversion * ddxExpected, 305 const __DRIversion * drmActual, 306 const __DRIversion * drmExpected) 307{ 308 __DRIutilversion2 ddx_expected; 309 ddx_expected.major_min = ddxExpected->major; 310 ddx_expected.major_max = ddxExpected->major; 311 ddx_expected.minor = ddxExpected->minor; 312 ddx_expected.patch = ddxExpected->patch; 313 return driCheckDriDdxDrmVersions3(driver_name, driActual, 314 driExpected, ddxActual, & ddx_expected, 315 drmActual, drmExpected); 316} 317 318GLboolean driClipRectToFramebuffer( const GLframebuffer *buffer, 319 GLint *x, GLint *y, 320 GLsizei *width, GLsizei *height ) 321{ 322 /* left clipping */ 323 if (*x < buffer->_Xmin) { 324 *width -= (buffer->_Xmin - *x); 325 *x = buffer->_Xmin; 326 } 327 328 /* right clipping */ 329 if (*x + *width > buffer->_Xmax) 330 *width -= (*x + *width - buffer->_Xmax - 1); 331 332 if (*width <= 0) 333 return GL_FALSE; 334 335 /* bottom clipping */ 336 if (*y < buffer->_Ymin) { 337 *height -= (buffer->_Ymin - *y); 338 *y = buffer->_Ymin; 339 } 340 341 /* top clipping */ 342 if (*y + *height > buffer->_Ymax) 343 *height -= (*y + *height - buffer->_Ymax - 1); 344 345 if (*height <= 0) 346 return GL_FALSE; 347 348 return GL_TRUE; 349} 350 351/** 352 * Creates a set of \c __GLcontextModes that a driver will expose. 353 * 354 * A set of \c __GLcontextModes will be created based on the supplied 355 * parameters. The number of modes processed will be 2 * 356 * \c num_depth_stencil_bits * \c num_db_modes. 357 * 358 * For the most part, data is just copied from \c depth_bits, \c stencil_bits, 359 * \c db_modes, and \c visType into each \c __GLcontextModes element. 360 * However, the meanings of \c fb_format and \c fb_type require further 361 * explanation. The \c fb_format specifies which color components are in 362 * each pixel and what the default order is. For example, \c GL_RGB specifies 363 * that red, green, blue are available and red is in the "most significant" 364 * position and blue is in the "least significant". The \c fb_type specifies 365 * the bit sizes of each component and the actual ordering. For example, if 366 * \c GL_UNSIGNED_SHORT_5_6_5_REV is specified with \c GL_RGB, bits [15:11] 367 * are the blue value, bits [10:5] are the green value, and bits [4:0] are 368 * the red value. 369 * 370 * One sublte issue is the combination of \c GL_RGB or \c GL_BGR and either 371 * of the \c GL_UNSIGNED_INT_8_8_8_8 modes. The resulting mask values in the 372 * \c __GLcontextModes structure is \b identical to the \c GL_RGBA or 373 * \c GL_BGRA case, except the \c alphaMask is zero. This means that, as 374 * far as this routine is concerned, \c GL_RGB with \c GL_UNSIGNED_INT_8_8_8_8 375 * still uses 32-bits. 376 * 377 * If in doubt, look at the tables used in the function. 378 * 379 * \param ptr_to_modes Pointer to a pointer to a linked list of 380 * \c __GLcontextModes. Upon completion, a pointer to 381 * the next element to be process will be stored here. 382 * If the function fails and returns \c GL_FALSE, this 383 * value will be unmodified, but some elements in the 384 * linked list may be modified. 385 * \param fb_format Format of the framebuffer. Currently only \c GL_RGB, 386 * \c GL_RGBA, \c GL_BGR, and \c GL_BGRA are supported. 387 * \param fb_type Type of the pixels in the framebuffer. Currently only 388 * \c GL_UNSIGNED_SHORT_5_6_5, 389 * \c GL_UNSIGNED_SHORT_5_6_5_REV, 390 * \c GL_UNSIGNED_INT_8_8_8_8, and 391 * \c GL_UNSIGNED_INT_8_8_8_8_REV are supported. 392 * \param depth_bits Array of depth buffer sizes to be exposed. 393 * \param stencil_bits Array of stencil buffer sizes to be exposed. 394 * \param num_depth_stencil_bits Number of entries in both \c depth_bits and 395 * \c stencil_bits. 396 * \param db_modes Array of buffer swap modes. If an element has a 397 * value of \c GLX_NONE, then it represents a 398 * single-buffered mode. Other valid values are 399 * \c GLX_SWAP_EXCHANGE_OML, \c GLX_SWAP_COPY_OML, and 400 * \c GLX_SWAP_UNDEFINED_OML. See the 401 * GLX_OML_swap_method extension spec for more details. 402 * \param num_db_modes Number of entries in \c db_modes. 403 * \param msaa_samples Array of msaa sample count. 0 represents a visual 404 * without a multisample buffer. 405 * \param num_msaa_modes Number of entries in \c msaa_samples. 406 * \param visType GLX visual type. Usually either \c GLX_TRUE_COLOR or 407 * \c GLX_DIRECT_COLOR. 408 * 409 * \returns 410 * \c GL_TRUE on success or \c GL_FALSE on failure. Currently the only 411 * cause of failure is a bad parameter (i.e., unsupported \c fb_format or 412 * \c fb_type). 413 * 414 * \todo 415 * There is currently no way to support packed RGB modes (i.e., modes with 416 * exactly 3 bytes per pixel) or floating-point modes. This could probably 417 * be done by creating some new, private enums with clever names likes 418 * \c GL_UNSIGNED_3BYTE_8_8_8, \c GL_4FLOAT_32_32_32_32, 419 * \c GL_4HALF_16_16_16_16, etc. We can cross that bridge when we come to it. 420 */ 421__DRIconfig ** 422driCreateConfigs(GLenum fb_format, GLenum fb_type, 423 const uint8_t * depth_bits, const uint8_t * stencil_bits, 424 unsigned num_depth_stencil_bits, 425 const GLenum * db_modes, unsigned num_db_modes, 426 const uint8_t * msaa_samples, unsigned num_msaa_modes, 427 GLboolean enable_accum) 428{ 429 static const uint8_t bits_table[4][4] = { 430 /* R G B A */ 431 { 3, 3, 2, 0 }, /* Any GL_UNSIGNED_BYTE_3_3_2 */ 432 { 5, 6, 5, 0 }, /* Any GL_UNSIGNED_SHORT_5_6_5 */ 433 { 8, 8, 8, 0 }, /* Any RGB with any GL_UNSIGNED_INT_8_8_8_8 */ 434 { 8, 8, 8, 8 } /* Any RGBA with any GL_UNSIGNED_INT_8_8_8_8 */ 435 }; 436 437 static const uint32_t masks_table_rgb[6][4] = { 438 { 0x000000E0, 0x0000001C, 0x00000003, 0x00000000 }, /* 3_3_2 */ 439 { 0x00000007, 0x00000038, 0x000000C0, 0x00000000 }, /* 2_3_3_REV */ 440 { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5 */ 441 { 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5_REV */ 442 { 0xFF000000, 0x00FF0000, 0x0000FF00, 0x00000000 }, /* 8_8_8_8 */ 443 { 0x000000FF, 0x0000FF00, 0x00FF0000, 0x00000000 } /* 8_8_8_8_REV */ 444 }; 445 446 static const uint32_t masks_table_rgba[6][4] = { 447 { 0x000000E0, 0x0000001C, 0x00000003, 0x00000000 }, /* 3_3_2 */ 448 { 0x00000007, 0x00000038, 0x000000C0, 0x00000000 }, /* 2_3_3_REV */ 449 { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5 */ 450 { 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5_REV */ 451 { 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF }, /* 8_8_8_8 */ 452 { 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 }, /* 8_8_8_8_REV */ 453 }; 454 455 static const uint32_t masks_table_bgr[6][4] = { 456 { 0x00000007, 0x00000038, 0x000000C0, 0x00000000 }, /* 3_3_2 */ 457 { 0x000000E0, 0x0000001C, 0x00000003, 0x00000000 }, /* 2_3_3_REV */ 458 { 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5 */ 459 { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5_REV */ 460 { 0x0000FF00, 0x00FF0000, 0xFF000000, 0x00000000 }, /* 8_8_8_8 */ 461 { 0x00FF0000, 0x0000FF00, 0x000000FF, 0x00000000 }, /* 8_8_8_8_REV */ 462 }; 463 464 static const uint32_t masks_table_bgra[6][4] = { 465 { 0x00000007, 0x00000038, 0x000000C0, 0x00000000 }, /* 3_3_2 */ 466 { 0x000000E0, 0x0000001C, 0x00000003, 0x00000000 }, /* 2_3_3_REV */ 467 { 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5 */ 468 { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5_REV */ 469 { 0x0000FF00, 0x00FF0000, 0xFF000000, 0x000000FF }, /* 8_8_8_8 */ 470 { 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000 }, /* 8_8_8_8_REV */ 471 }; 472 473 static const uint8_t bytes_per_pixel[6] = { 474 1, /* 3_3_2 */ 475 1, /* 2_3_3_REV */ 476 2, /* 5_6_5 */ 477 2, /* 5_6_5_REV */ 478 4, /* 8_8_8_8 */ 479 4 /* 8_8_8_8_REV */ 480 }; 481 482 const uint8_t * bits; 483 const uint32_t * masks; 484 int index; 485 __DRIconfig **configs, **c; 486 __GLcontextModes *modes; 487 unsigned i, j, k, h; 488 unsigned num_modes; 489 unsigned num_accum_bits = (enable_accum) ? 2 : 1; 490 491 switch ( fb_type ) { 492 case GL_UNSIGNED_BYTE_3_3_2: 493 index = 0; 494 break; 495 case GL_UNSIGNED_BYTE_2_3_3_REV: 496 index = 1; 497 break; 498 case GL_UNSIGNED_SHORT_5_6_5: 499 index = 2; 500 break; 501 case GL_UNSIGNED_SHORT_5_6_5_REV: 502 index = 3; 503 break; 504 case GL_UNSIGNED_INT_8_8_8_8: 505 index = 4; 506 break; 507 case GL_UNSIGNED_INT_8_8_8_8_REV: 508 index = 5; 509 break; 510 default: 511 fprintf( stderr, "[%s:%u] Unknown framebuffer type 0x%04x.\n", 512 __FUNCTION__, __LINE__, fb_type ); 513 return NULL; 514 } 515 516 517 /* Valid types are GL_UNSIGNED_SHORT_5_6_5 and GL_UNSIGNED_INT_8_8_8_8 and 518 * the _REV versions. 519 * 520 * Valid formats are GL_RGBA, GL_RGB, and GL_BGRA. 521 */ 522 523 switch ( fb_format ) { 524 case GL_RGB: 525 masks = masks_table_rgb[ index ]; 526 break; 527 528 case GL_RGBA: 529 masks = masks_table_rgba[ index ]; 530 break; 531 532 case GL_BGR: 533 masks = masks_table_bgr[ index ]; 534 break; 535 536 case GL_BGRA: 537 masks = masks_table_bgra[ index ]; 538 break; 539 540 default: 541 fprintf( stderr, "[%s:%u] Unknown framebuffer format 0x%04x.\n", 542 __FUNCTION__, __LINE__, fb_format ); 543 return NULL; 544 } 545 546 switch ( bytes_per_pixel[ index ] ) { 547 case 1: 548 bits = bits_table[0]; 549 break; 550 case 2: 551 bits = bits_table[1]; 552 break; 553 default: 554 bits = ((fb_format == GL_RGB) || (fb_format == GL_BGR)) 555 ? bits_table[2] 556 : bits_table[3]; 557 break; 558 } 559 560 num_modes = num_depth_stencil_bits * num_db_modes * num_accum_bits * num_msaa_modes; 561 configs = calloc(1, (num_modes + 1) * sizeof *configs); 562 if (configs == NULL) 563 return NULL; 564 565 c = configs; 566 for ( k = 0 ; k < num_depth_stencil_bits ; k++ ) { 567 for ( i = 0 ; i < num_db_modes ; i++ ) { 568 for ( h = 0 ; h < num_msaa_modes; h++ ) { 569 for ( j = 0 ; j < num_accum_bits ; j++ ) { 570 *c = malloc (sizeof **c); 571 modes = &(*c)->modes; 572 c++; 573 574 memset(modes, 0, sizeof *modes); 575 modes->redBits = bits[0]; 576 modes->greenBits = bits[1]; 577 modes->blueBits = bits[2]; 578 modes->alphaBits = bits[3]; 579 modes->redMask = masks[0]; 580 modes->greenMask = masks[1]; 581 modes->blueMask = masks[2]; 582 modes->alphaMask = masks[3]; 583 modes->rgbBits = modes->redBits + modes->greenBits 584 + modes->blueBits + modes->alphaBits; 585 586 modes->accumRedBits = 16 * j; 587 modes->accumGreenBits = 16 * j; 588 modes->accumBlueBits = 16 * j; 589 modes->accumAlphaBits = (masks[3] != 0) ? 16 * j : 0; 590 modes->visualRating = (j == 0) ? GLX_NONE : GLX_SLOW_CONFIG; 591 592 modes->stencilBits = stencil_bits[k]; 593 modes->depthBits = depth_bits[k]; 594 595 modes->transparentPixel = GLX_NONE; 596 modes->transparentRed = GLX_DONT_CARE; 597 modes->transparentGreen = GLX_DONT_CARE; 598 modes->transparentBlue = GLX_DONT_CARE; 599 modes->transparentAlpha = GLX_DONT_CARE; 600 modes->transparentIndex = GLX_DONT_CARE; 601 modes->visualType = GLX_DONT_CARE; 602 modes->renderType = GLX_RGBA_BIT; 603 modes->drawableType = GLX_WINDOW_BIT; 604 modes->rgbMode = GL_TRUE; 605 606 if ( db_modes[i] == GLX_NONE ) { 607 modes->doubleBufferMode = GL_FALSE; 608 } 609 else { 610 modes->doubleBufferMode = GL_TRUE; 611 modes->swapMethod = db_modes[i]; 612 } 613 614 modes->samples = msaa_samples[h]; 615 modes->sampleBuffers = modes->samples ? 1 : 0; 616 617 618 modes->haveAccumBuffer = ((modes->accumRedBits + 619 modes->accumGreenBits + 620 modes->accumBlueBits + 621 modes->accumAlphaBits) > 0); 622 modes->haveDepthBuffer = (modes->depthBits > 0); 623 modes->haveStencilBuffer = (modes->stencilBits > 0); 624 625 modes->bindToTextureRgb = GL_TRUE; 626 modes->bindToTextureRgba = GL_TRUE; 627 modes->bindToMipmapTexture = GL_FALSE; 628 modes->bindToTextureTargets = 629 __DRI_ATTRIB_TEXTURE_1D_BIT | 630 __DRI_ATTRIB_TEXTURE_2D_BIT | 631 __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT; 632 } 633 } 634 } 635 } 636 *c = NULL; 637 638 return configs; 639} 640 641__DRIconfig **driConcatConfigs(__DRIconfig **a, 642 __DRIconfig **b) 643{ 644 __DRIconfig **all; 645 int i, j, index; 646 647 i = 0; 648 while (a[i] != NULL) 649 i++; 650 j = 0; 651 while (b[j] != NULL) 652 j++; 653 654 all = malloc((i + j + 1) * sizeof *all); 655 index = 0; 656 for (i = 0; a[i] != NULL; i++) 657 all[index++] = a[i]; 658 for (j = 0; b[j] != NULL; j++) 659 all[index++] = b[j]; 660 all[index++] = NULL; 661 662 free(a); 663 free(b); 664 665 return all; 666} 667 668#define __ATTRIB(attrib, field) \ 669 { attrib, offsetof(__GLcontextModes, field) } 670 671static const struct { unsigned int attrib, offset; } attribMap[] = { 672 __ATTRIB(__DRI_ATTRIB_BUFFER_SIZE, rgbBits), 673 __ATTRIB(__DRI_ATTRIB_LEVEL, level), 674 __ATTRIB(__DRI_ATTRIB_RED_SIZE, redBits), 675 __ATTRIB(__DRI_ATTRIB_GREEN_SIZE, greenBits), 676 __ATTRIB(__DRI_ATTRIB_BLUE_SIZE, blueBits), 677 __ATTRIB(__DRI_ATTRIB_ALPHA_SIZE, alphaBits), 678 __ATTRIB(__DRI_ATTRIB_DEPTH_SIZE, depthBits), 679 __ATTRIB(__DRI_ATTRIB_STENCIL_SIZE, stencilBits), 680 __ATTRIB(__DRI_ATTRIB_ACCUM_RED_SIZE, accumRedBits), 681 __ATTRIB(__DRI_ATTRIB_ACCUM_GREEN_SIZE, accumGreenBits), 682 __ATTRIB(__DRI_ATTRIB_ACCUM_BLUE_SIZE, accumBlueBits), 683 __ATTRIB(__DRI_ATTRIB_ACCUM_ALPHA_SIZE, accumAlphaBits), 684 __ATTRIB(__DRI_ATTRIB_SAMPLE_BUFFERS, sampleBuffers), 685 __ATTRIB(__DRI_ATTRIB_SAMPLES, samples), 686 __ATTRIB(__DRI_ATTRIB_DOUBLE_BUFFER, doubleBufferMode), 687 __ATTRIB(__DRI_ATTRIB_STEREO, stereoMode), 688 __ATTRIB(__DRI_ATTRIB_AUX_BUFFERS, numAuxBuffers), 689 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_TYPE, transparentPixel), 690 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_INDEX_VALUE, transparentPixel), 691 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_RED_VALUE, transparentRed), 692 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_GREEN_VALUE, transparentGreen), 693 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_BLUE_VALUE, transparentBlue), 694 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE, transparentAlpha), 695 __ATTRIB(__DRI_ATTRIB_FLOAT_MODE, floatMode), 696 __ATTRIB(__DRI_ATTRIB_RED_MASK, redMask), 697 __ATTRIB(__DRI_ATTRIB_GREEN_MASK, greenMask), 698 __ATTRIB(__DRI_ATTRIB_BLUE_MASK, blueMask), 699 __ATTRIB(__DRI_ATTRIB_ALPHA_MASK, alphaMask), 700 __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_WIDTH, maxPbufferWidth), 701 __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_HEIGHT, maxPbufferHeight), 702 __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_PIXELS, maxPbufferPixels), 703 __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH, optimalPbufferWidth), 704 __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT, optimalPbufferHeight), 705 __ATTRIB(__DRI_ATTRIB_SWAP_METHOD, swapMethod), 706 __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGB, bindToTextureRgb), 707 __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGBA, bindToTextureRgba), 708 __ATTRIB(__DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE, bindToMipmapTexture), 709 __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS, bindToTextureTargets), 710 __ATTRIB(__DRI_ATTRIB_YINVERTED, yInverted), 711 712 /* The struct field doesn't matter here, these are handled by the 713 * switch in driGetConfigAttribIndex. We need them in the array 714 * so the iterator includes them though.*/ 715 __ATTRIB(__DRI_ATTRIB_RENDER_TYPE, level), 716 __ATTRIB(__DRI_ATTRIB_CONFIG_CAVEAT, level), 717 __ATTRIB(__DRI_ATTRIB_SWAP_METHOD, level) 718}; 719 720#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) 721 722static int 723driGetConfigAttribIndex(const __DRIconfig *config, 724 unsigned int index, unsigned int *value) 725{ 726 switch (attribMap[index].attrib) { 727 case __DRI_ATTRIB_RENDER_TYPE: 728 *value = __DRI_ATTRIB_RGBA_BIT; 729 break; 730 case __DRI_ATTRIB_CONFIG_CAVEAT: 731 if (config->modes.visualRating == GLX_NON_CONFORMANT_CONFIG) 732 *value = __DRI_ATTRIB_NON_CONFORMANT_CONFIG; 733 else if (config->modes.visualRating == GLX_SLOW_CONFIG) 734 *value = __DRI_ATTRIB_SLOW_BIT; 735 else 736 *value = 0; 737 break; 738 case __DRI_ATTRIB_SWAP_METHOD: 739 break; 740 741 case __DRI_ATTRIB_FLOAT_MODE: 742 *value = config->modes.floatMode; 743 break; 744 745 default: 746 *value = *(unsigned int *) 747 ((char *) &config->modes + attribMap[index].offset); 748 749 break; 750 } 751 752 return GL_TRUE; 753} 754 755int 756driGetConfigAttrib(const __DRIconfig *config, 757 unsigned int attrib, unsigned int *value) 758{ 759 int i; 760 761 for (i = 0; i < ARRAY_SIZE(attribMap); i++) 762 if (attribMap[i].attrib == attrib) 763 return driGetConfigAttribIndex(config, i, value); 764 765 return GL_FALSE; 766} 767 768int 769driIndexConfigAttrib(const __DRIconfig *config, int index, 770 unsigned int *attrib, unsigned int *value) 771{ 772 if (index >= 0 && index < ARRAY_SIZE(attribMap)) { 773 *attrib = attribMap[index].attrib; 774 return driGetConfigAttribIndex(config, index, value); 775 } 776 777 return GL_FALSE; 778} 779