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