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 <stdio.h>
34 #include <stdlib.h>
35 #include <stdbool.h>
36 #include <stdint.h>
37 #include "main/macros.h"
38 #include "main/mtypes.h"
39 #include "main/cpuinfo.h"
40 #include "main/extensions.h"
41 #include "utils.h"
42 #include "dri_util.h"
43
44 /* WARNING: HACK: Local defines to avoid pulling glx.h.
45 *
46 * Any parts of this file that use the following defines are either partial or
47 * entirely broken wrt EGL.
48 *
49 * For example any getConfigAttrib() or indexConfigAttrib() query from EGL for
50 * SLOW or NON_CONFORMANT_CONFIG will not work as expected since the EGL tokens
51 * are different from the GLX ones.
52 */
53 #define GLX_NONE 0x8000
54 #define GLX_SLOW_CONFIG 0x8001
55 #define GLX_NON_CONFORMANT_CONFIG 0x800D
56 #define GLX_DONT_CARE 0xFFFFFFFF
57
58 /**
59 * Create the \c GL_RENDERER string for DRI drivers.
60 *
61 * Almost all DRI drivers use a \c GL_RENDERER string of the form:
62 *
63 * "Mesa DRI <chip> <driver date> <AGP speed) <CPU information>"
64 *
65 * Using the supplied chip name, driver data, and AGP speed, this function
66 * creates the string.
67 *
68 * \param buffer Buffer to hold the \c GL_RENDERER string.
69 * \param hardware_name Name of the hardware.
70 * \param agp_mode AGP mode (speed).
71 *
72 * \returns
73 * The length of the string stored in \c buffer. This does \b not include
74 * the terminating \c NUL character.
75 */
76 unsigned
driGetRendererString(char * buffer,const char * hardware_name,GLuint agp_mode)77 driGetRendererString( char * buffer, const char * hardware_name,
78 GLuint agp_mode )
79 {
80 unsigned offset;
81 char *cpu;
82
83 offset = sprintf( buffer, "Mesa DRI %s", hardware_name );
84
85 /* Append any AGP-specific information.
86 */
87 switch ( agp_mode ) {
88 case 1:
89 case 2:
90 case 4:
91 case 8:
92 offset += sprintf( & buffer[ offset ], " AGP %ux", agp_mode );
93 break;
94
95 default:
96 break;
97 }
98
99 /* Append any CPU-specific information.
100 */
101 cpu = _mesa_get_cpu_string();
102 if (cpu) {
103 offset += sprintf(buffer + offset, " %s", cpu);
104 free(cpu);
105 }
106
107 return offset;
108 }
109
110
111 /**
112 * Creates a set of \c struct gl_config that a driver will expose.
113 *
114 * A set of \c struct gl_config will be created based on the supplied
115 * parameters. The number of modes processed will be 2 *
116 * \c num_depth_stencil_bits * \c num_db_modes.
117 *
118 * For the most part, data is just copied from \c depth_bits, \c stencil_bits,
119 * \c db_modes, and \c visType into each \c struct gl_config element.
120 * However, the meanings of \c fb_format and \c fb_type require further
121 * explanation. The \c fb_format specifies which color components are in
122 * each pixel and what the default order is. For example, \c GL_RGB specifies
123 * that red, green, blue are available and red is in the "most significant"
124 * position and blue is in the "least significant". The \c fb_type specifies
125 * the bit sizes of each component and the actual ordering. For example, if
126 * \c GL_UNSIGNED_SHORT_5_6_5_REV is specified with \c GL_RGB, bits [15:11]
127 * are the blue value, bits [10:5] are the green value, and bits [4:0] are
128 * the red value.
129 *
130 * One sublte issue is the combination of \c GL_RGB or \c GL_BGR and either
131 * of the \c GL_UNSIGNED_INT_8_8_8_8 modes. The resulting mask values in the
132 * \c struct gl_config structure is \b identical to the \c GL_RGBA or
133 * \c GL_BGRA case, except the \c alphaMask is zero. This means that, as
134 * far as this routine is concerned, \c GL_RGB with \c GL_UNSIGNED_INT_8_8_8_8
135 * still uses 32-bits.
136 *
137 * If in doubt, look at the tables used in the function.
138 *
139 * \param ptr_to_modes Pointer to a pointer to a linked list of
140 * \c struct gl_config. Upon completion, a pointer to
141 * the next element to be process will be stored here.
142 * If the function fails and returns \c GL_FALSE, this
143 * value will be unmodified, but some elements in the
144 * linked list may be modified.
145 * \param format Mesa mesa_format enum describing the pixel format
146 * \param depth_bits Array of depth buffer sizes to be exposed.
147 * \param stencil_bits Array of stencil buffer sizes to be exposed.
148 * \param num_depth_stencil_bits Number of entries in both \c depth_bits and
149 * \c stencil_bits.
150 * \param db_modes Array of buffer swap modes. If an element has a
151 * value of \c __DRI_ATTRIB_SWAP_NONE, then it
152 * represents a single-buffered mode. Other valid
153 * values are \c __DRI_ATTRIB_SWAP_EXCHANGE,
154 * \c __DRI_ATTRIB_SWAP_COPY, and \c __DRI_ATTRIB_SWAP_UNDEFINED.
155 * They represent the respective GLX values as in
156 * the GLX_OML_swap_method extension spec.
157 * \param num_db_modes Number of entries in \c db_modes.
158 * \param msaa_samples Array of msaa sample count. 0 represents a visual
159 * without a multisample buffer.
160 * \param num_msaa_modes Number of entries in \c msaa_samples.
161 * \param enable_accum Add an accum buffer to the configs
162 * \param color_depth_match Whether the color depth must match the zs depth
163 * This forces 32-bit color to have 24-bit depth, and
164 * 16-bit color to have 16-bit depth.
165 *
166 * \returns
167 * Pointer to any array of pointers to the \c __DRIconfig structures created
168 * for the specified formats. If there is an error, \c NULL is returned.
169 * Currently the only cause of failure is a bad parameter (i.e., unsupported
170 * \c format).
171 */
172 __DRIconfig **
driCreateConfigs(mesa_format format,const uint8_t * depth_bits,const uint8_t * stencil_bits,unsigned num_depth_stencil_bits,const GLenum * db_modes,unsigned num_db_modes,const uint8_t * msaa_samples,unsigned num_msaa_modes,GLboolean enable_accum,GLboolean color_depth_match)173 driCreateConfigs(mesa_format format,
174 const uint8_t * depth_bits, const uint8_t * stencil_bits,
175 unsigned num_depth_stencil_bits,
176 const GLenum * db_modes, unsigned num_db_modes,
177 const uint8_t * msaa_samples, unsigned num_msaa_modes,
178 GLboolean enable_accum, GLboolean color_depth_match)
179 {
180 static const struct {
181 uint32_t masks[4];
182 int shifts[4];
183 } format_table[] = {
184 /* MESA_FORMAT_B5G6R5_UNORM */
185 {{ 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 },
186 { 11, 5, 0, -1 }},
187 /* MESA_FORMAT_B8G8R8X8_UNORM */
188 {{ 0x00FF0000, 0x0000FF00, 0x000000FF, 0x00000000 },
189 { 16, 8, 0, -1 }},
190 /* MESA_FORMAT_B8G8R8A8_UNORM */
191 {{ 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000 },
192 { 16, 8, 0, 24 }},
193 /* MESA_FORMAT_B10G10R10X2_UNORM */
194 {{ 0x3FF00000, 0x000FFC00, 0x000003FF, 0x00000000 },
195 { 20, 10, 0, -1 }},
196 /* MESA_FORMAT_B10G10R10A2_UNORM */
197 {{ 0x3FF00000, 0x000FFC00, 0x000003FF, 0xC0000000 },
198 { 20, 10, 0, 30 }},
199 /* MESA_FORMAT_R8G8B8A8_UNORM */
200 {{ 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 },
201 { 0, 8, 16, 24 }},
202 /* MESA_FORMAT_R8G8B8X8_UNORM */
203 {{ 0x000000FF, 0x0000FF00, 0x00FF0000, 0x00000000 },
204 { 0, 8, 16, -1 }},
205 /* MESA_FORMAT_R10G10B10X2_UNORM */
206 {{ 0x000003FF, 0x000FFC00, 0x3FF00000, 0x00000000 },
207 { 0, 10, 20, -1 }},
208 /* MESA_FORMAT_R10G10B10A2_UNORM */
209 {{ 0x000003FF, 0x000FFC00, 0x3FF00000, 0xC0000000 },
210 { 0, 10, 20, 30 }},
211 /* MESA_FORMAT_RGBX_FLOAT16 */
212 {{ 0, 0, 0, 0},
213 { 0, 16, 32, -1 }},
214 /* MESA_FORMAT_RGBA_FLOAT16 */
215 {{ 0, 0, 0, 0},
216 { 0, 16, 32, 48 }},
217 };
218
219 const uint32_t * masks;
220 const int * shifts;
221 __DRIconfig **configs, **c;
222 struct gl_config *modes;
223 unsigned i, j, k, h;
224 unsigned num_modes;
225 unsigned num_accum_bits = (enable_accum) ? 2 : 1;
226 int red_bits;
227 int green_bits;
228 int blue_bits;
229 int alpha_bits;
230 bool is_srgb;
231 bool is_float;
232
233 switch (format) {
234 case MESA_FORMAT_B5G6R5_UNORM:
235 masks = format_table[0].masks;
236 shifts = format_table[0].shifts;
237 break;
238 case MESA_FORMAT_B8G8R8X8_UNORM:
239 case MESA_FORMAT_B8G8R8X8_SRGB:
240 masks = format_table[1].masks;
241 shifts = format_table[1].shifts;
242 break;
243 case MESA_FORMAT_B8G8R8A8_UNORM:
244 case MESA_FORMAT_B8G8R8A8_SRGB:
245 masks = format_table[2].masks;
246 shifts = format_table[2].shifts;
247 break;
248 case MESA_FORMAT_R8G8B8A8_UNORM:
249 case MESA_FORMAT_R8G8B8A8_SRGB:
250 masks = format_table[5].masks;
251 shifts = format_table[5].shifts;
252 break;
253 case MESA_FORMAT_R8G8B8X8_UNORM:
254 case MESA_FORMAT_R8G8B8X8_SRGB:
255 masks = format_table[6].masks;
256 shifts = format_table[6].shifts;
257 break;
258 case MESA_FORMAT_B10G10R10X2_UNORM:
259 masks = format_table[3].masks;
260 shifts = format_table[3].shifts;
261 break;
262 case MESA_FORMAT_B10G10R10A2_UNORM:
263 masks = format_table[4].masks;
264 shifts = format_table[4].shifts;
265 break;
266 case MESA_FORMAT_RGBX_FLOAT16:
267 masks = format_table[9].masks;
268 shifts = format_table[9].shifts;
269 break;
270 case MESA_FORMAT_RGBA_FLOAT16:
271 masks = format_table[10].masks;
272 shifts = format_table[10].shifts;
273 break;
274 case MESA_FORMAT_R10G10B10X2_UNORM:
275 masks = format_table[7].masks;
276 shifts = format_table[7].shifts;
277 break;
278 case MESA_FORMAT_R10G10B10A2_UNORM:
279 masks = format_table[8].masks;
280 shifts = format_table[8].shifts;
281 break;
282 default:
283 fprintf(stderr, "[%s:%u] Unknown framebuffer type %s (%d).\n",
284 __func__, __LINE__,
285 _mesa_get_format_name(format), format);
286 return NULL;
287 }
288
289 red_bits = _mesa_get_format_bits(format, GL_RED_BITS);
290 green_bits = _mesa_get_format_bits(format, GL_GREEN_BITS);
291 blue_bits = _mesa_get_format_bits(format, GL_BLUE_BITS);
292 alpha_bits = _mesa_get_format_bits(format, GL_ALPHA_BITS);
293 is_srgb = _mesa_is_format_srgb(format);
294 is_float = _mesa_get_format_datatype(format) == GL_FLOAT;
295
296 num_modes = num_depth_stencil_bits * num_db_modes * num_accum_bits * num_msaa_modes;
297 configs = calloc(num_modes + 1, sizeof *configs);
298 if (configs == NULL)
299 return NULL;
300
301 c = configs;
302 for ( k = 0 ; k < num_depth_stencil_bits ; k++ ) {
303 for ( i = 0 ; i < num_db_modes ; i++ ) {
304 for ( h = 0 ; h < num_msaa_modes; h++ ) {
305 for ( j = 0 ; j < num_accum_bits ; j++ ) {
306 if (color_depth_match &&
307 (depth_bits[k] || stencil_bits[k])) {
308 /* Depth can really only be 0, 16, 24, or 32. A 32-bit
309 * color format still matches 24-bit depth, as there
310 * is an implicit 8-bit stencil. So really we just
311 * need to make sure that color/depth are both 16 or
312 * both non-16.
313 */
314 if ((depth_bits[k] + stencil_bits[k] == 16) !=
315 (red_bits + green_bits + blue_bits + alpha_bits == 16))
316 continue;
317 }
318
319 *c = malloc (sizeof **c);
320 modes = &(*c)->modes;
321 c++;
322
323 memset(modes, 0, sizeof *modes);
324 modes->floatMode = is_float;
325 modes->redBits = red_bits;
326 modes->greenBits = green_bits;
327 modes->blueBits = blue_bits;
328 modes->alphaBits = alpha_bits;
329 modes->redMask = masks[0];
330 modes->greenMask = masks[1];
331 modes->blueMask = masks[2];
332 modes->alphaMask = masks[3];
333 modes->redShift = shifts[0];
334 modes->greenShift = shifts[1];
335 modes->blueShift = shifts[2];
336 modes->alphaShift = shifts[3];
337 modes->rgbBits = modes->redBits + modes->greenBits
338 + modes->blueBits + modes->alphaBits;
339
340 modes->accumRedBits = 16 * j;
341 modes->accumGreenBits = 16 * j;
342 modes->accumBlueBits = 16 * j;
343 modes->accumAlphaBits = 16 * j;
344
345 modes->stencilBits = stencil_bits[k];
346 modes->depthBits = depth_bits[k];
347
348 if (db_modes[i] == __DRI_ATTRIB_SWAP_NONE) {
349 modes->doubleBufferMode = GL_FALSE;
350 modes->swapMethod = __DRI_ATTRIB_SWAP_UNDEFINED;
351 }
352 else {
353 modes->doubleBufferMode = GL_TRUE;
354 modes->swapMethod = db_modes[i];
355 }
356
357 modes->samples = msaa_samples[h];
358
359 modes->sRGBCapable = is_srgb;
360 }
361 }
362 }
363 }
364 *c = NULL;
365
366 return configs;
367 }
368
driConcatConfigs(__DRIconfig ** a,__DRIconfig ** b)369 __DRIconfig **driConcatConfigs(__DRIconfig **a,
370 __DRIconfig **b)
371 {
372 __DRIconfig **all;
373 int i, j, index;
374
375 if (a == NULL || a[0] == NULL)
376 return b;
377 else if (b == NULL || b[0] == NULL)
378 return a;
379
380 i = 0;
381 while (a[i] != NULL)
382 i++;
383 j = 0;
384 while (b[j] != NULL)
385 j++;
386
387 all = malloc((i + j + 1) * sizeof *all);
388 index = 0;
389 for (i = 0; a[i] != NULL; i++)
390 all[index++] = a[i];
391 for (j = 0; b[j] != NULL; j++)
392 all[index++] = b[j];
393 all[index++] = NULL;
394
395 free(a);
396 free(b);
397
398 return all;
399 }
400
401 #define __ATTRIB(attrib, field) case attrib: *value = config->modes.field; break
402
403 /**
404 * Return the value of a configuration attribute. The attribute is
405 * indicated by the index.
406 */
407 static int
driGetConfigAttribIndex(const __DRIconfig * config,unsigned int index,unsigned int * value)408 driGetConfigAttribIndex(const __DRIconfig *config,
409 unsigned int index, unsigned int *value)
410 {
411 switch (index + 1) {
412 __ATTRIB(__DRI_ATTRIB_BUFFER_SIZE, rgbBits);
413 __ATTRIB(__DRI_ATTRIB_RED_SIZE, redBits);
414 __ATTRIB(__DRI_ATTRIB_GREEN_SIZE, greenBits);
415 __ATTRIB(__DRI_ATTRIB_BLUE_SIZE, blueBits);
416 case __DRI_ATTRIB_LEVEL:
417 case __DRI_ATTRIB_LUMINANCE_SIZE:
418 case __DRI_ATTRIB_AUX_BUFFERS:
419 *value = 0;
420 break;
421 __ATTRIB(__DRI_ATTRIB_ALPHA_SIZE, alphaBits);
422 case __DRI_ATTRIB_ALPHA_MASK_SIZE:
423 /* I have no idea what this value was ever meant to mean, it's
424 * never been set to anything, just say 0.
425 */
426 *value = 0;
427 break;
428 __ATTRIB(__DRI_ATTRIB_DEPTH_SIZE, depthBits);
429 __ATTRIB(__DRI_ATTRIB_STENCIL_SIZE, stencilBits);
430 __ATTRIB(__DRI_ATTRIB_ACCUM_RED_SIZE, accumRedBits);
431 __ATTRIB(__DRI_ATTRIB_ACCUM_GREEN_SIZE, accumGreenBits);
432 __ATTRIB(__DRI_ATTRIB_ACCUM_BLUE_SIZE, accumBlueBits);
433 __ATTRIB(__DRI_ATTRIB_ACCUM_ALPHA_SIZE, accumAlphaBits);
434 case __DRI_ATTRIB_SAMPLE_BUFFERS:
435 *value = !!config->modes.samples;
436 break;
437 __ATTRIB(__DRI_ATTRIB_SAMPLES, samples);
438 case __DRI_ATTRIB_RENDER_TYPE:
439 /* no support for color index mode */
440 *value = __DRI_ATTRIB_RGBA_BIT;
441 if (config->modes.floatMode)
442 *value |= __DRI_ATTRIB_FLOAT_BIT;
443 break;
444 case __DRI_ATTRIB_CONFIG_CAVEAT:
445 if (config->modes.accumRedBits != 0)
446 *value = __DRI_ATTRIB_SLOW_BIT;
447 else
448 *value = 0;
449 break;
450 case __DRI_ATTRIB_CONFORMANT:
451 *value = GL_TRUE;
452 break;
453 __ATTRIB(__DRI_ATTRIB_DOUBLE_BUFFER, doubleBufferMode);
454 __ATTRIB(__DRI_ATTRIB_STEREO, stereoMode);
455 case __DRI_ATTRIB_TRANSPARENT_TYPE:
456 case __DRI_ATTRIB_TRANSPARENT_INDEX_VALUE: /* horrible bc hack */
457 *value = GLX_NONE;
458 break;
459 case __DRI_ATTRIB_TRANSPARENT_RED_VALUE:
460 case __DRI_ATTRIB_TRANSPARENT_GREEN_VALUE:
461 case __DRI_ATTRIB_TRANSPARENT_BLUE_VALUE:
462 case __DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE:
463 *value = GLX_DONT_CARE;
464 break;
465 case __DRI_ATTRIB_FLOAT_MODE:
466 *value = config->modes.floatMode;
467 break;
468 __ATTRIB(__DRI_ATTRIB_RED_MASK, redMask);
469 __ATTRIB(__DRI_ATTRIB_GREEN_MASK, greenMask);
470 __ATTRIB(__DRI_ATTRIB_BLUE_MASK, blueMask);
471 __ATTRIB(__DRI_ATTRIB_ALPHA_MASK, alphaMask);
472 case __DRI_ATTRIB_MAX_PBUFFER_WIDTH:
473 case __DRI_ATTRIB_MAX_PBUFFER_HEIGHT:
474 case __DRI_ATTRIB_MAX_PBUFFER_PIXELS:
475 case __DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH:
476 case __DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT:
477 case __DRI_ATTRIB_VISUAL_SELECT_GROUP:
478 *value = 0;
479 break;
480 __ATTRIB(__DRI_ATTRIB_SWAP_METHOD, swapMethod);
481 case __DRI_ATTRIB_MAX_SWAP_INTERVAL:
482 *value = INT_MAX;
483 break;
484 case __DRI_ATTRIB_MIN_SWAP_INTERVAL:
485 *value = 0;
486 break;
487 case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
488 case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
489 case __DRI_ATTRIB_YINVERTED:
490 *value = GL_TRUE;
491 break;
492 case __DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE:
493 *value = GL_FALSE;
494 break;
495 case __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS:
496 *value = __DRI_ATTRIB_TEXTURE_1D_BIT |
497 __DRI_ATTRIB_TEXTURE_2D_BIT |
498 __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT;
499 break;
500 __ATTRIB(__DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE, sRGBCapable);
501 case __DRI_ATTRIB_MUTABLE_RENDER_BUFFER:
502 *value = GL_FALSE;
503 break;
504 __ATTRIB(__DRI_ATTRIB_RED_SHIFT, redShift);
505 __ATTRIB(__DRI_ATTRIB_GREEN_SHIFT, greenShift);
506 __ATTRIB(__DRI_ATTRIB_BLUE_SHIFT, blueShift);
507 __ATTRIB(__DRI_ATTRIB_ALPHA_SHIFT, alphaShift);
508 default:
509 /* XXX log an error or smth */
510 return GL_FALSE;
511 }
512
513 return GL_TRUE;
514 }
515
516 /**
517 * Get the value of a configuration attribute.
518 * \param attrib the attribute (one of the _DRI_ATTRIB_x tokens)
519 * \param value returns the attribute's value
520 * \return 1 for success, 0 for failure
521 */
522 int
driGetConfigAttrib(const __DRIconfig * config,unsigned int attrib,unsigned int * value)523 driGetConfigAttrib(const __DRIconfig *config,
524 unsigned int attrib, unsigned int *value)
525 {
526 return driGetConfigAttribIndex(config, attrib - 1, value);
527 }
528
529
530 /**
531 * Get a configuration attribute name and value, given an index.
532 * \param index which field of the __DRIconfig to query
533 * \param attrib returns the attribute name (one of the _DRI_ATTRIB_x tokens)
534 * \param value returns the attribute's value
535 * \return 1 for success, 0 for failure
536 */
537 int
driIndexConfigAttrib(const __DRIconfig * config,int index,unsigned int * attrib,unsigned int * value)538 driIndexConfigAttrib(const __DRIconfig *config, int index,
539 unsigned int *attrib, unsigned int *value)
540 {
541 if (driGetConfigAttribIndex(config, index, value)) {
542 *attrib = index + 1;
543 return GL_TRUE;
544 }
545
546 return GL_FALSE;
547 }
548
549 /**
550 * Implement queries for values that are common across all Mesa drivers
551 *
552 * Currently only the following queries are supported by this function:
553 *
554 * - \c __DRI2_RENDERER_VERSION
555 * - \c __DRI2_RENDERER_PREFERRED_PROFILE
556 * - \c __DRI2_RENDERER_OPENGL_CORE_PROFILE_VERSION
557 * - \c __DRI2_RENDERER_OPENGL_COMPATIBLITY_PROFILE_VERSION
558 * - \c __DRI2_RENDERER_ES_PROFILE_VERSION
559 * - \c __DRI2_RENDERER_ES2_PROFILE_VERSION
560 *
561 * \returns
562 * Zero if a recognized value of \c param is supplied, -1 otherwise.
563 */
564 int
driQueryRendererIntegerCommon(__DRIscreen * psp,int param,unsigned int * value)565 driQueryRendererIntegerCommon(__DRIscreen *psp, int param, unsigned int *value)
566 {
567 switch (param) {
568 case __DRI2_RENDERER_VERSION: {
569 static const char *const ver = PACKAGE_VERSION;
570 char *endptr;
571 int v[3];
572
573 v[0] = strtol(ver, &endptr, 10);
574 assert(endptr[0] == '.');
575 if (endptr[0] != '.')
576 return -1;
577
578 v[1] = strtol(endptr + 1, &endptr, 10);
579 assert(endptr[0] == '.');
580 if (endptr[0] != '.')
581 return -1;
582
583 v[2] = strtol(endptr + 1, &endptr, 10);
584
585 value[0] = v[0];
586 value[1] = v[1];
587 value[2] = v[2];
588 return 0;
589 }
590 case __DRI2_RENDERER_PREFERRED_PROFILE:
591 value[0] = (psp->max_gl_core_version != 0)
592 ? (1U << __DRI_API_OPENGL_CORE) : (1U << __DRI_API_OPENGL);
593 return 0;
594 case __DRI2_RENDERER_OPENGL_CORE_PROFILE_VERSION:
595 value[0] = psp->max_gl_core_version / 10;
596 value[1] = psp->max_gl_core_version % 10;
597 return 0;
598 case __DRI2_RENDERER_OPENGL_COMPATIBILITY_PROFILE_VERSION:
599 value[0] = psp->max_gl_compat_version / 10;
600 value[1] = psp->max_gl_compat_version % 10;
601 return 0;
602 case __DRI2_RENDERER_OPENGL_ES_PROFILE_VERSION:
603 value[0] = psp->max_gl_es1_version / 10;
604 value[1] = psp->max_gl_es1_version % 10;
605 return 0;
606 case __DRI2_RENDERER_OPENGL_ES2_PROFILE_VERSION:
607 value[0] = psp->max_gl_es2_version / 10;
608 value[1] = psp->max_gl_es2_version % 10;
609 return 0;
610 default:
611 break;
612 }
613
614 return -1;
615 }
616