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source: vbox/trunk/src/VBox/Additions/common/crOpenGL/utils.c@ 61547

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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 <[email protected]>
30 */
31
32#include <string.h>
33#include <stdlib.h>
34#include "mtypes.h"
35#include "extensions.h"
36#include "utils.h"
37#include "dispatch.h"
38
39int driDispatchRemapTable[ driDispatchRemapTable_size ];
40
41#if defined(USE_X86_ASM)
42#include "x86/common_x86_asm.h"
43#endif
44
45#if defined(USE_PPC_ASM)
46#include "ppc/common_ppc_features.h"
47#endif
48
49unsigned
50driParseDebugString( const char * debug,
51 const struct dri_debug_control * control )
52{
53 unsigned flag;
54
55
56 flag = 0;
57 if ( debug != NULL ) {
58 while( control->string != NULL ) {
59 if ( !strcmp( debug, "all" ) ||
60 strstr( debug, control->string ) != NULL ) {
61 flag |= control->flag;
62 }
63
64 control++;
65 }
66 }
67
68 return flag;
69}
70
71
72
73/**
74 * Create the \c GL_RENDERER string for DRI drivers.
75 *
76 * Almost all DRI drivers use a \c GL_RENDERER string of the form:
77 *
78 * "Mesa DRI <chip> <driver date> <AGP speed) <CPU information>"
79 *
80 * Using the supplied chip name, driver data, and AGP speed, this function
81 * creates the string.
82 *
83 * \param buffer Buffer to hold the \c GL_RENDERER string.
84 * \param hardware_name Name of the hardware.
85 * \param driver_date Driver date.
86 * \param agp_mode AGP mode (speed).
87 *
88 * \returns
89 * The length of the string stored in \c buffer. This does \b not include
90 * the terminating \c NUL character.
91 */
92unsigned
93driGetRendererString( char * buffer, const char * hardware_name,
94 const char * driver_date, GLuint agp_mode )
95{
96#define MAX_INFO 4
97 const char * cpu[MAX_INFO];
98 unsigned next = 0;
99 unsigned i;
100 unsigned offset;
101
102
103 offset = sprintf( buffer, "Mesa DRI %s %s", hardware_name, driver_date );
104
105 /* Append any AGP-specific information.
106 */
107 switch ( agp_mode ) {
108 case 1:
109 case 2:
110 case 4:
111 case 8:
112 offset += sprintf( & buffer[ offset ], " AGP %ux", agp_mode );
113 break;
114
115 default:
116 break;
117 }
118
119 /* Append any CPU-specific information.
120 */
121#ifdef USE_X86_ASM
122 if ( _mesa_x86_cpu_features ) {
123 cpu[next] = " x86";
124 next++;
125 }
126# ifdef USE_MMX_ASM
127 if ( cpu_has_mmx ) {
128 cpu[next] = (cpu_has_mmxext) ? "/MMX+" : "/MMX";
129 next++;
130 }
131# endif
132# ifdef USE_3DNOW_ASM
133 if ( cpu_has_3dnow ) {
134 cpu[next] = (cpu_has_3dnowext) ? "/3DNow!+" : "/3DNow!";
135 next++;
136 }
137# endif
138# ifdef USE_SSE_ASM
139 if ( cpu_has_xmm ) {
140 cpu[next] = (cpu_has_xmm2) ? "/SSE2" : "/SSE";
141 next++;
142 }
143# endif
144
145#elif defined(USE_SPARC_ASM)
146
147 cpu[0] = " SPARC";
148 next = 1;
149
150#elif defined(USE_PPC_ASM)
151 if ( _mesa_ppc_cpu_features ) {
152 cpu[next] = (cpu_has_64) ? " PowerPC 64" : " PowerPC";
153 next++;
154 }
155
156# ifdef USE_VMX_ASM
157 if ( cpu_has_vmx ) {
158 cpu[next] = "/Altivec";
159 next++;
160 }
161# endif
162
163 if ( ! cpu_has_fpu ) {
164 cpu[next] = "/No FPU";
165 next++;
166 }
167#endif
168
169 for ( i = 0 ; i < next ; i++ ) {
170 const size_t len = strlen( cpu[i] );
171
172 strncpy( & buffer[ offset ], cpu[i], len );
173 offset += len;
174 }
175
176 return offset;
177}
178
179
180
181
182#define need_GL_ARB_multisample
183#define need_GL_ARB_transpose_matrix
184#define need_GL_ARB_window_pos
185#define need_GL_EXT_compiled_vertex_array
186#define need_GL_EXT_polygon_offset
187#define need_GL_EXT_texture_object
188#define need_GL_EXT_vertex_array
189#define need_GL_MESA_window_pos
190
191/* These are needed in *all* drivers because Mesa internally implements
192 * certain functionality in terms of functions provided by these extensions.
193 * For example, glBlendFunc is implemented by calling glBlendFuncSeparateEXT.
194 */
195#define need_GL_EXT_blend_func_separate
196#define need_GL_NV_vertex_program
197
198#include "extension_helper.h"
199
200static const struct dri_extension all_mesa_extensions[] = {
201 { "GL_ARB_multisample", GL_ARB_multisample_functions },
202 { "GL_ARB_transpose_matrix", GL_ARB_transpose_matrix_functions },
203 { "GL_ARB_window_pos", GL_ARB_window_pos_functions },
204 { "GL_EXT_blend_func_separate", GL_EXT_blend_func_separate_functions },
205 { "GL_EXT_compiled_vertex_array", GL_EXT_compiled_vertex_array_functions },
206 { "GL_EXT_polygon_offset", GL_EXT_polygon_offset_functions },
207 { "GL_EXT_texture_object", GL_EXT_texture_object_functions },
208 { "GL_EXT_vertex_array", GL_EXT_vertex_array_functions },
209 { "GL_MESA_window_pos", GL_MESA_window_pos_functions },
210 { "GL_NV_vertex_program", GL_NV_vertex_program_functions },
211 { NULL, NULL }
212};
213
214
215/**
216 * Enable extensions supported by the driver.
217 *
218 * \bug
219 * ARB_imaging isn't handled properly. In Mesa, enabling ARB_imaging also
220 * enables all the sub-extensions that are folded into it. This means that
221 * we need to add entry-points (via \c driInitSingleExtension) for those
222 * new functions here.
223 */
224void driInitExtensions( GLcontext * ctx,
225 const struct dri_extension * extensions_to_enable,
226 GLboolean enable_imaging )
227{
228 static int first_time = 1;
229 unsigned i;
230
231 if ( first_time ) {
232 for ( i = 0 ; i < driDispatchRemapTable_size ; i++ ) {
233 driDispatchRemapTable[i] = -1;
234 }
235
236 first_time = 0;
237 driInitExtensions( ctx, all_mesa_extensions, GL_FALSE );
238 }
239
240 if ( (ctx != NULL) && enable_imaging ) {
241 _mesa_enable_imaging_extensions( ctx );
242 }
243
244 for ( i = 0 ; extensions_to_enable[i].name != NULL ; i++ ) {
245 driInitSingleExtension( ctx, & extensions_to_enable[i] );
246 }
247}
248
249
250
251
252/**
253 * Enable and add dispatch functions for a single extension
254 *
255 * \param ctx Context where extension is to be enabled.
256 * \param ext Extension that is to be enabled.
257 *
258 * \sa driInitExtensions, _mesa_enable_extension, _glapi_add_entrypoint
259 *
260 * \todo
261 * Determine if it would be better to use \c strlen instead of the hardcoded
262 * for-loops.
263 */
264void driInitSingleExtension( GLcontext * ctx,
265 const struct dri_extension * ext )
266{
267 unsigned i;
268
269
270 if ( ext->functions != NULL ) {
271 for ( i = 0 ; ext->functions[i].strings != NULL ; i++ ) {
272 const char * functions[16];
273 const char * parameter_signature;
274 const char * str = ext->functions[i].strings;
275 unsigned j;
276 unsigned offset;
277
278
279 /* Separate the parameter signature from the rest of the string.
280 * If the parameter signature is empty (i.e., the string starts
281 * with a NUL character), then the function has a void parameter
282 * list.
283 */
284 parameter_signature = str;
285 while ( str[0] != '\0' ) {
286 str++;
287 }
288 str++;
289
290
291 /* Divide the string into the substrings that name each
292 * entry-point for the function.
293 */
294 for ( j = 0 ; j < 16 ; j++ ) {
295 if ( str[0] == '\0' ) {
296 functions[j] = NULL;
297 break;
298 }
299
300 functions[j] = str;
301
302 while ( str[0] != '\0' ) {
303 str++;
304 }
305 str++;
306 }
307
308
309 /* Add each entry-point to the dispatch table.
310 */
311 offset = _glapi_add_dispatch( functions, parameter_signature );
312 if (offset == -1) {
313 fprintf(stderr, "DISPATCH ERROR! _glapi_add_dispatch failed "
314 "to add %s!\n", functions[0]);
315 }
316 else if (ext->functions[i].remap_index != -1) {
317 driDispatchRemapTable[ ext->functions[i].remap_index ] =
318 offset;
319 }
320 else if (ext->functions[i].offset != offset) {
321 fprintf(stderr, "DISPATCH ERROR! %s -> %u != %u\n",
322 functions[0], offset, ext->functions[i].offset);
323 }
324 }
325 }
326
327 if ( ctx != NULL ) {
328 _mesa_enable_extension( ctx, ext->name );
329 }
330}
331
332
333/**
334 * Utility function used by drivers to test the versions of other components.
335 *
336 * If one of the version requirements is not met, a message is logged using
337 * \c __driUtilMessage.
338 *
339 * \param driver_name Name of the driver. Used in error messages.
340 * \param driActual Actual DRI version supplied __driCreateNewScreen.
341 * \param driExpected Minimum DRI version required by the driver.
342 * \param ddxActual Actual DDX version supplied __driCreateNewScreen.
343 * \param ddxExpected Minimum DDX minor and range of DDX major version required by the driver.
344 * \param drmActual Actual DRM version supplied __driCreateNewScreen.
345 * \param drmExpected Minimum DRM version required by the driver.
346 *
347 * \returns \c GL_TRUE if all version requirements are met. Otherwise,
348 * \c GL_FALSE is returned.
349 *
350 * \sa __driCreateNewScreen, driCheckDriDdxDrmVersions2, __driUtilMessage
351 *
352 * \todo
353 * Now that the old \c driCheckDriDdxDrmVersions function is gone, this
354 * function and \c driCheckDriDdxDrmVersions2 should be renamed.
355 */
356GLboolean
357driCheckDriDdxDrmVersions3(const char * driver_name,
358 const __DRIversion * driActual,
359 const __DRIversion * driExpected,
360 const __DRIversion * ddxActual,
361 const __DRIutilversion2 * ddxExpected,
362 const __DRIversion * drmActual,
363 const __DRIversion * drmExpected)
364{
365 static const char format[] = "%s DRI driver expected %s version %d.%d.x "
366 "but got version %d.%d.%d\n";
367 static const char format2[] = "%s DRI driver expected %s version %d-%d.%d.x "
368 "but got version %d.%d.%d\n";
369
370
371 /* Check the DRI version */
372 if ( (driActual->major != driExpected->major)
373 || (driActual->minor < driExpected->minor) ) {
374 fprintf(stderr, format, driver_name, "DRI",
375 driExpected->major, driExpected->minor,
376 driActual->major, driActual->minor, driActual->patch);
377 return GL_FALSE;
378 }
379
380 /* Check that the DDX driver version is compatible */
381 /* for miniglx we pass in -1 so we can ignore the DDX version */
382 if ( (ddxActual->major != -1) && ((ddxActual->major < ddxExpected->major_min)
383 || (ddxActual->major > ddxExpected->major_max)
384 || (ddxActual->minor < ddxExpected->minor)) ) {
385 fprintf(stderr, format2, driver_name, "DDX",
386 ddxExpected->major_min, ddxExpected->major_max, ddxExpected->minor,
387 ddxActual->major, ddxActual->minor, ddxActual->patch);
388 return GL_FALSE;
389 }
390
391 /* Check that the DRM driver version is compatible */
392 if ( (drmActual->major != drmExpected->major)
393 || (drmActual->minor < drmExpected->minor) ) {
394 fprintf(stderr, format, driver_name, "DRM",
395 drmExpected->major, drmExpected->minor,
396 drmActual->major, drmActual->minor, drmActual->patch);
397 return GL_FALSE;
398 }
399
400 return GL_TRUE;
401}
402
403GLboolean
404driCheckDriDdxDrmVersions2(const char * driver_name,
405 const __DRIversion * driActual,
406 const __DRIversion * driExpected,
407 const __DRIversion * ddxActual,
408 const __DRIversion * ddxExpected,
409 const __DRIversion * drmActual,
410 const __DRIversion * drmExpected)
411{
412 __DRIutilversion2 ddx_expected;
413 ddx_expected.major_min = ddxExpected->major;
414 ddx_expected.major_max = ddxExpected->major;
415 ddx_expected.minor = ddxExpected->minor;
416 ddx_expected.patch = ddxExpected->patch;
417 return driCheckDriDdxDrmVersions3(driver_name, driActual,
418 driExpected, ddxActual, & ddx_expected,
419 drmActual, drmExpected);
420}
421
422GLboolean driClipRectToFramebuffer( const GLframebuffer *buffer,
423 GLint *x, GLint *y,
424 GLsizei *width, GLsizei *height )
425{
426 /* left clipping */
427 if (*x < buffer->_Xmin) {
428 *width -= (buffer->_Xmin - *x);
429 *x = buffer->_Xmin;
430 }
431
432 /* right clipping */
433 if (*x + *width > buffer->_Xmax)
434 *width -= (*x + *width - buffer->_Xmax - 1);
435
436 if (*width <= 0)
437 return GL_FALSE;
438
439 /* bottom clipping */
440 if (*y < buffer->_Ymin) {
441 *height -= (buffer->_Ymin - *y);
442 *y = buffer->_Ymin;
443 }
444
445 /* top clipping */
446 if (*y + *height > buffer->_Ymax)
447 *height -= (*y + *height - buffer->_Ymax - 1);
448
449 if (*height <= 0)
450 return GL_FALSE;
451
452 return GL_TRUE;
453}
454
455/**
456 * Creates a set of \c __GLcontextModes that a driver will expose.
457 *
458 * A set of \c __GLcontextModes will be created based on the supplied
459 * parameters. The number of modes processed will be 2 *
460 * \c num_depth_stencil_bits * \c num_db_modes.
461 *
462 * For the most part, data is just copied from \c depth_bits, \c stencil_bits,
463 * \c db_modes, and \c visType into each \c __GLcontextModes element.
464 * However, the meanings of \c fb_format and \c fb_type require further
465 * explanation. The \c fb_format specifies which color components are in
466 * each pixel and what the default order is. For example, \c GL_RGB specifies
467 * that red, green, blue are available and red is in the "most significant"
468 * position and blue is in the "least significant". The \c fb_type specifies
469 * the bit sizes of each component and the actual ordering. For example, if
470 * \c GL_UNSIGNED_SHORT_5_6_5_REV is specified with \c GL_RGB, bits [15:11]
471 * are the blue value, bits [10:5] are the green value, and bits [4:0] are
472 * the red value.
473 *
474 * One subtle issue is the combination of \c GL_RGB or \c GL_BGR and either
475 * of the \c GL_UNSIGNED_INT_8_8_8_8 modes. The resulting mask values in the
476 * \c __GLcontextModes structure is \b identical to the \c GL_RGBA or
477 * \c GL_BGRA case, except the \c alphaMask is zero. This means that, as
478 * far as this routine is concerned, \c GL_RGB with \c GL_UNSIGNED_INT_8_8_8_8
479 * still uses 32-bits.
480 *
481 * If in doubt, look at the tables used in the function.
482 *
483 * \param ptr_to_modes Pointer to a pointer to a linked list of
484 * \c __GLcontextModes. Upon completion, a pointer to
485 * the next element to be process will be stored here.
486 * If the function fails and returns \c GL_FALSE, this
487 * value will be unmodified, but some elements in the
488 * linked list may be modified.
489 * \param fb_format Format of the framebuffer. Currently only \c GL_RGB,
490 * \c GL_RGBA, \c GL_BGR, and \c GL_BGRA are supported.
491 * \param fb_type Type of the pixels in the framebuffer. Currently only
492 * \c GL_UNSIGNED_SHORT_5_6_5,
493 * \c GL_UNSIGNED_SHORT_5_6_5_REV,
494 * \c GL_UNSIGNED_INT_8_8_8_8, and
495 * \c GL_UNSIGNED_INT_8_8_8_8_REV are supported.
496 * \param depth_bits Array of depth buffer sizes to be exposed.
497 * \param stencil_bits Array of stencil buffer sizes to be exposed.
498 * \param num_depth_stencil_bits Number of entries in both \c depth_bits and
499 * \c stencil_bits.
500 * \param db_modes Array of buffer swap modes. If an element has a
501 * value of \c GLX_NONE, then it represents a
502 * single-buffered mode. Other valid values are
503 * \c GLX_SWAP_EXCHANGE_OML, \c GLX_SWAP_COPY_OML, and
504 * \c GLX_SWAP_UNDEFINED_OML. See the
505 * GLX_OML_swap_method extension spec for more details.
506 * \param num_db_modes Number of entries in \c db_modes.
507 * \param visType GLX visual type. Usually either \c GLX_TRUE_COLOR or
508 * \c GLX_DIRECT_COLOR.
509 *
510 * \returns
511 * \c GL_TRUE on success or \c GL_FALSE on failure. Currently the only
512 * cause of failure is a bad parameter (i.e., unsupported \c fb_format or
513 * \c fb_type).
514 *
515 * \todo
516 * There is currently no way to support packed RGB modes (i.e., modes with
517 * exactly 3 bytes per pixel) or floating-point modes. This could probably
518 * be done by creating some new, private enums with clever names likes
519 * \c GL_UNSIGNED_3BYTE_8_8_8, \c GL_4FLOAT_32_32_32_32,
520 * \c GL_4HALF_16_16_16_16, etc. We can cross that bridge when we come to it.
521 */
522__DRIconfig **
523driCreateConfigs(GLenum fb_format, GLenum fb_type,
524 const u_int8_t * depth_bits, const u_int8_t * stencil_bits,
525 unsigned num_depth_stencil_bits,
526 const GLenum * db_modes, unsigned num_db_modes)
527{
528 static const u_int8_t bits_table[4][4] = {
529 /* R G B A */
530 { 3, 3, 2, 0 }, /* Any GL_UNSIGNED_BYTE_3_3_2 */
531 { 5, 6, 5, 0 }, /* Any GL_UNSIGNED_SHORT_5_6_5 */
532 { 8, 8, 8, 0 }, /* Any RGB with any GL_UNSIGNED_INT_8_8_8_8 */
533 { 8, 8, 8, 8 } /* Any RGBA with any GL_UNSIGNED_INT_8_8_8_8 */
534 };
535
536 static const u_int32_t masks_table_rgb[6][4] = {
537 { 0x000000E0, 0x0000001C, 0x00000003, 0x00000000 }, /* 3_3_2 */
538 { 0x00000007, 0x00000038, 0x000000C0, 0x00000000 }, /* 2_3_3_REV */
539 { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5 */
540 { 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5_REV */
541 { 0xFF000000, 0x00FF0000, 0x0000FF00, 0x00000000 }, /* 8_8_8_8 */
542 { 0x000000FF, 0x0000FF00, 0x00FF0000, 0x00000000 } /* 8_8_8_8_REV */
543 };
544
545 static const u_int32_t masks_table_rgba[6][4] = {
546 { 0x000000E0, 0x0000001C, 0x00000003, 0x00000000 }, /* 3_3_2 */
547 { 0x00000007, 0x00000038, 0x000000C0, 0x00000000 }, /* 2_3_3_REV */
548 { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5 */
549 { 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5_REV */
550 { 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF }, /* 8_8_8_8 */
551 { 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 }, /* 8_8_8_8_REV */
552 };
553
554 static const u_int32_t masks_table_bgr[6][4] = {
555 { 0x00000007, 0x00000038, 0x000000C0, 0x00000000 }, /* 3_3_2 */
556 { 0x000000E0, 0x0000001C, 0x00000003, 0x00000000 }, /* 2_3_3_REV */
557 { 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5 */
558 { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5_REV */
559 { 0x0000FF00, 0x00FF0000, 0xFF000000, 0x00000000 }, /* 8_8_8_8 */
560 { 0x00FF0000, 0x0000FF00, 0x000000FF, 0x00000000 }, /* 8_8_8_8_REV */
561 };
562
563 static const u_int32_t masks_table_bgra[6][4] = {
564 { 0x00000007, 0x00000038, 0x000000C0, 0x00000000 }, /* 3_3_2 */
565 { 0x000000E0, 0x0000001C, 0x00000003, 0x00000000 }, /* 2_3_3_REV */
566 { 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5 */
567 { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5_REV */
568 { 0x0000FF00, 0x00FF0000, 0xFF000000, 0x000000FF }, /* 8_8_8_8 */
569 { 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000 }, /* 8_8_8_8_REV */
570 };
571
572 static const u_int8_t bytes_per_pixel[6] = {
573 1, /* 3_3_2 */
574 1, /* 2_3_3_REV */
575 2, /* 5_6_5 */
576 2, /* 5_6_5_REV */
577 4, /* 8_8_8_8 */
578 4 /* 8_8_8_8_REV */
579 };
580
581 const u_int8_t * bits;
582 const u_int32_t * masks;
583 int index;
584 __DRIconfig **configs, **c;
585 __GLcontextModes *modes;
586 unsigned i;
587 unsigned j;
588 unsigned k;
589 unsigned num_modes;
590 unsigned num_accum_bits = 2;
591
592 switch ( fb_type ) {
593 case GL_UNSIGNED_BYTE_3_3_2:
594 index = 0;
595 break;
596 case GL_UNSIGNED_BYTE_2_3_3_REV:
597 index = 1;
598 break;
599 case GL_UNSIGNED_SHORT_5_6_5:
600 index = 2;
601 break;
602 case GL_UNSIGNED_SHORT_5_6_5_REV:
603 index = 3;
604 break;
605 case GL_UNSIGNED_INT_8_8_8_8:
606 index = 4;
607 break;
608 case GL_UNSIGNED_INT_8_8_8_8_REV:
609 index = 5;
610 break;
611 default:
612 fprintf( stderr, "[%s:%u] Unknown framebuffer type 0x%04x.\n",
613 __FUNCTION__, __LINE__, fb_type );
614 return NULL;
615 }
616
617
618 /* Valid types are GL_UNSIGNED_SHORT_5_6_5 and GL_UNSIGNED_INT_8_8_8_8 and
619 * the _REV versions.
620 *
621 * Valid formats are GL_RGBA, GL_RGB, and GL_BGRA.
622 */
623
624 switch ( fb_format ) {
625 case GL_RGB:
626 masks = masks_table_rgb[ index ];
627 break;
628
629 case GL_RGBA:
630 masks = masks_table_rgba[ index ];
631 break;
632
633 case GL_BGR:
634 masks = masks_table_bgr[ index ];
635 break;
636
637 case GL_BGRA:
638 masks = masks_table_bgra[ index ];
639 break;
640
641 default:
642 fprintf( stderr, "[%s:%u] Unknown framebuffer format 0x%04x.\n",
643 __FUNCTION__, __LINE__, fb_format );
644 return NULL;
645 }
646
647 switch ( bytes_per_pixel[ index ] ) {
648 case 1:
649 bits = bits_table[0];
650 break;
651 case 2:
652 bits = bits_table[1];
653 break;
654 default:
655 bits = ((fb_format == GL_RGB) || (fb_format == GL_BGR))
656 ? bits_table[2]
657 : bits_table[3];
658 break;
659 }
660
661 num_modes = num_depth_stencil_bits * num_db_modes * num_accum_bits;
662 configs = _mesa_calloc((num_modes + 1) * sizeof *configs);
663 if (configs == NULL)
664 return NULL;
665
666 c = configs;
667 for ( k = 0 ; k < num_depth_stencil_bits ; k++ ) {
668 for ( i = 0 ; i < num_db_modes ; i++ ) {
669 for ( j = 0 ; j < num_accum_bits ; j++ ) {
670 *c = _mesa_malloc (sizeof **c);
671 modes = &(*c)->modes;
672 c++;
673
674 memset(modes, 0, sizeof *modes);
675 modes->redBits = bits[0];
676 modes->greenBits = bits[1];
677 modes->blueBits = bits[2];
678 modes->alphaBits = bits[3];
679 modes->redMask = masks[0];
680 modes->greenMask = masks[1];
681 modes->blueMask = masks[2];
682 modes->alphaMask = masks[3];
683 modes->rgbBits = modes->redBits + modes->greenBits
684 + modes->blueBits + modes->alphaBits;
685
686 modes->accumRedBits = 16 * j;
687 modes->accumGreenBits = 16 * j;
688 modes->accumBlueBits = 16 * j;
689 modes->accumAlphaBits = (masks[3] != 0) ? 16 * j : 0;
690 modes->visualRating = (j == 0) ? GLX_NONE : GLX_SLOW_CONFIG;
691
692 modes->stencilBits = stencil_bits[k];
693 modes->depthBits = depth_bits[k];
694
695 modes->transparentPixel = GLX_NONE;
696 modes->transparentRed = GLX_DONT_CARE;
697 modes->transparentGreen = GLX_DONT_CARE;
698 modes->transparentBlue = GLX_DONT_CARE;
699 modes->transparentAlpha = GLX_DONT_CARE;
700 modes->transparentIndex = GLX_DONT_CARE;
701 modes->visualType = GLX_DONT_CARE;
702 modes->renderType = GLX_RGBA_BIT;
703 modes->drawableType = GLX_WINDOW_BIT;
704 modes->rgbMode = GL_TRUE;
705
706 if ( db_modes[i] == GLX_NONE ) {
707 modes->doubleBufferMode = GL_FALSE;
708 }
709 else {
710 modes->doubleBufferMode = GL_TRUE;
711 modes->swapMethod = db_modes[i];
712 }
713
714 modes->haveAccumBuffer = ((modes->accumRedBits +
715 modes->accumGreenBits +
716 modes->accumBlueBits +
717 modes->accumAlphaBits) > 0);
718 modes->haveDepthBuffer = (modes->depthBits > 0);
719 modes->haveStencilBuffer = (modes->stencilBits > 0);
720
721 modes->bindToTextureRgb = GL_TRUE;
722 modes->bindToTextureRgba = GL_TRUE;
723 modes->bindToMipmapTexture = GL_FALSE;
724 modes->bindToTextureTargets = modes->rgbMode ?
725 __DRI_ATTRIB_TEXTURE_1D_BIT |
726 __DRI_ATTRIB_TEXTURE_2D_BIT |
727 __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT :
728 0;
729 }
730 }
731 }
732 *c = NULL;
733
734 return configs;
735}
736
737const __DRIconfig **driConcatConfigs(__DRIconfig **a, __DRIconfig **b)
738{
739 const __DRIconfig **all;
740 int i, j, index;
741
742 i = 0;
743 while (a[i] != NULL)
744 i++;
745 j = 0;
746 while (b[j] != NULL)
747 j++;
748
749 all = _mesa_malloc((i + j + 1) * sizeof *all);
750 index = 0;
751 for (i = 0; a[i] != NULL; i++)
752 all[index++] = a[i];
753 for (j = 0; b[j] != NULL; j++)
754 all[index++] = b[j];
755 all[index++] = NULL;
756
757 _mesa_free(a);
758 _mesa_free(b);
759
760 return all;
761}
762
763#define __ATTRIB(attrib, field) \
764 { attrib, offsetof(__GLcontextModes, field) }
765
766static const struct { unsigned int attrib, offset; } attribMap[] = {
767 __ATTRIB(__DRI_ATTRIB_BUFFER_SIZE, rgbBits),
768 __ATTRIB(__DRI_ATTRIB_LEVEL, level),
769 __ATTRIB(__DRI_ATTRIB_RED_SIZE, redBits),
770 __ATTRIB(__DRI_ATTRIB_GREEN_SIZE, greenBits),
771 __ATTRIB(__DRI_ATTRIB_BLUE_SIZE, blueBits),
772 __ATTRIB(__DRI_ATTRIB_ALPHA_SIZE, alphaBits),
773 __ATTRIB(__DRI_ATTRIB_DEPTH_SIZE, depthBits),
774 __ATTRIB(__DRI_ATTRIB_STENCIL_SIZE, stencilBits),
775 __ATTRIB(__DRI_ATTRIB_ACCUM_RED_SIZE, accumRedBits),
776 __ATTRIB(__DRI_ATTRIB_ACCUM_GREEN_SIZE, accumGreenBits),
777 __ATTRIB(__DRI_ATTRIB_ACCUM_BLUE_SIZE, accumBlueBits),
778 __ATTRIB(__DRI_ATTRIB_ACCUM_ALPHA_SIZE, accumAlphaBits),
779 __ATTRIB(__DRI_ATTRIB_SAMPLE_BUFFERS, sampleBuffers),
780 __ATTRIB(__DRI_ATTRIB_SAMPLES, samples),
781 __ATTRIB(__DRI_ATTRIB_DOUBLE_BUFFER, doubleBufferMode),
782 __ATTRIB(__DRI_ATTRIB_STEREO, stereoMode),
783 __ATTRIB(__DRI_ATTRIB_AUX_BUFFERS, numAuxBuffers),
784 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_TYPE, transparentPixel),
785 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_INDEX_VALUE, transparentPixel),
786 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_RED_VALUE, transparentRed),
787 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_GREEN_VALUE, transparentGreen),
788 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_BLUE_VALUE, transparentBlue),
789 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE, transparentAlpha),
790 __ATTRIB(__DRI_ATTRIB_FLOAT_MODE, floatMode),
791 __ATTRIB(__DRI_ATTRIB_RED_MASK, redMask),
792 __ATTRIB(__DRI_ATTRIB_GREEN_MASK, greenMask),
793 __ATTRIB(__DRI_ATTRIB_BLUE_MASK, blueMask),
794 __ATTRIB(__DRI_ATTRIB_ALPHA_MASK, alphaMask),
795 __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_WIDTH, maxPbufferWidth),
796 __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_HEIGHT, maxPbufferHeight),
797 __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_PIXELS, maxPbufferPixels),
798 __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH, optimalPbufferWidth),
799 __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT, optimalPbufferHeight),
800 __ATTRIB(__DRI_ATTRIB_SWAP_METHOD, swapMethod),
801 __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGB, bindToTextureRgb),
802 __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGBA, bindToTextureRgba),
803 __ATTRIB(__DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE, bindToMipmapTexture),
804 __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS, bindToTextureTargets),
805 __ATTRIB(__DRI_ATTRIB_YINVERTED, yInverted),
806
807 /* The struct field doesn't matter here, these are handled by the
808 * switch in driGetConfigAttribIndex. We need them in the array
809 * so the iterator includes them though.*/
810 __ATTRIB(__DRI_ATTRIB_RENDER_TYPE, level),
811 __ATTRIB(__DRI_ATTRIB_CONFIG_CAVEAT, level),
812 __ATTRIB(__DRI_ATTRIB_SWAP_METHOD, level)
813};
814
815#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
816
817static int
818driGetConfigAttribIndex(const __DRIconfig *config,
819 unsigned int index, unsigned int *value)
820{
821 switch (attribMap[index].attrib) {
822 case __DRI_ATTRIB_RENDER_TYPE:
823 if (config->modes.rgbMode)
824 *value = __DRI_ATTRIB_RGBA_BIT;
825 else
826 *value = __DRI_ATTRIB_COLOR_INDEX_BIT;
827 break;
828 case __DRI_ATTRIB_CONFIG_CAVEAT:
829 if (config->modes.visualRating == GLX_NON_CONFORMANT_CONFIG)
830 *value = __DRI_ATTRIB_NON_CONFORMANT_CONFIG;
831 else if (config->modes.visualRating == GLX_SLOW_CONFIG)
832 *value = __DRI_ATTRIB_SLOW_BIT;
833 else
834 *value = 0;
835 break;
836 case __DRI_ATTRIB_SWAP_METHOD:
837 break;
838
839 case __DRI_ATTRIB_FLOAT_MODE:
840 *value = config->modes.floatMode;
841 break;
842
843 default:
844 *value = *(unsigned int *)
845 ((char *) &config->modes + attribMap[index].offset);
846
847 break;
848 }
849
850 return GL_TRUE;
851}
852
853int
854driGetConfigAttrib(const __DRIconfig *config,
855 unsigned int attrib, unsigned int *value)
856{
857 int i;
858
859 for (i = 0; i < ARRAY_SIZE(attribMap); i++)
860 if (attribMap[i].attrib == attrib)
861 return driGetConfigAttribIndex(config, i, value);
862
863 return GL_FALSE;
864}
865
866int
867driIndexConfigAttrib(const __DRIconfig *config, int index,
868 unsigned int *attrib, unsigned int *value)
869{
870 if (index >= 0 && index < ARRAY_SIZE(attribMap)) {
871 *attrib = attribMap[index].attrib;
872 return driGetConfigAttribIndex(config, index, value);
873 }
874
875 return GL_FALSE;
876}
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