src/mesa/drivers/dri/common/utils.c

   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 <stdbool.h>
  35 #include "main/macros.h"
  36 #include "main/mtypes.h"
  37 #include "main/cpuinfo.h"
  38 #include "main/extensions.h"
  39 #include "utils.h"
  40 #include "dri_util.h"
  41
  42
  43 unsigned
  44 driParseDebugString( const char * debug,
  45                      const struct dri_debug_control * control  )
  46 {
  47    unsigned   flag;
  48
  49
  50    flag = 0;
  51    if ( debug != NULL ) {
  52       while( control->string != NULL ) {
  53          if ( !strcmp( debug, "all" ) ||
  54               strstr( debug, control->string ) != NULL ) {
  55             flag |= control->flag;
  56          }
  57
  58          control++;
  59       }
  60    }
  61
  62    return flag;
  63 }
  64
  65
  66
  67 /**
  68  * Create the \c GL_RENDERER string for DRI drivers.
  69  *
  70  * Almost all DRI drivers use a \c GL_RENDERER string of the form:
  71  *
  72  *    "Mesa DRI <chip> <driver date> <AGP speed) <CPU information>"
  73  *
  74  * Using the supplied chip name, driver data, and AGP speed, this function
  75  * creates the string.
  76  *
  77  * \param buffer         Buffer to hold the \c GL_RENDERER string.
  78  * \param hardware_name  Name of the hardware.
  79  * \param agp_mode       AGP mode (speed).
  80  *
  81  * \returns
  82  * The length of the string stored in \c buffer.  This does \b not include
  83  * the terminating \c NUL character.
  84  */
  85 unsigned
  86 driGetRendererString( char * buffer, const char * hardware_name,
  87                       GLuint agp_mode )
  88 {
  89    unsigned offset;
  90    char *cpu;
  91
  92    offset = sprintf( buffer, "Mesa DRI %s", hardware_name );
  93
  94    /* Append any AGP-specific information.
  95     */
  96    switch ( agp_mode ) {
  97    case 1:
  98    case 2:
  99    case 4:
 100    case 8:
 101       offset += sprintf( & buffer[ offset ], " AGP %ux", agp_mode );
 102       break;
 103
 104    default:
 105       break;
 106    }
 107
 108    /* Append any CPU-specific information.
 109     */
 110    cpu = _mesa_get_cpu_string();
 111    if (cpu) {
 112       offset += sprintf(buffer + offset, " %s", cpu);
 113       free(cpu);
 114    }
 115
 116    return offset;
 117 }
 118
 119
 120 /**
 121  * Creates a set of \c struct gl_config that a driver will expose.
 122  *
 123  * A set of \c struct gl_config will be created based on the supplied
 124  * parameters.  The number of modes processed will be 2 *
 125  * \c num_depth_stencil_bits * \c num_db_modes.
 126  *
 127  * For the most part, data is just copied from \c depth_bits, \c stencil_bits,
 128  * \c db_modes, and \c visType into each \c struct gl_config element.
 129  * However, the meanings of \c fb_format and \c fb_type require further
 130  * explanation.  The \c fb_format specifies which color components are in
 131  * each pixel and what the default order is.  For example, \c GL_RGB specifies
 132  * that red, green, blue are available and red is in the "most significant"
 133  * position and blue is in the "least significant".  The \c fb_type specifies
 134  * the bit sizes of each component and the actual ordering.  For example, if
 135  * \c GL_UNSIGNED_SHORT_5_6_5_REV is specified with \c GL_RGB, bits [15:11]
 136  * are the blue value, bits [10:5] are the green value, and bits [4:0] are
 137  * the red value.
 138  *
 139  * One sublte issue is the combination of \c GL_RGB  or \c GL_BGR and either
 140  * of the \c GL_UNSIGNED_INT_8_8_8_8 modes.  The resulting mask values in the
 141  * \c struct gl_config structure is \b identical to the \c GL_RGBA or
 142  * \c GL_BGRA case, except the \c alphaMask is zero.  This means that, as
 143  * far as this routine is concerned, \c GL_RGB with \c GL_UNSIGNED_INT_8_8_8_8
 144  * still uses 32-bits.
 145  *
 146  * If in doubt, look at the tables used in the function.
 147  *
 148  * \param ptr_to_modes  Pointer to a pointer to a linked list of
 149  *                      \c struct gl_config.  Upon completion, a pointer to
 150  *                      the next element to be process will be stored here.
 151  *                      If the function fails and returns \c GL_FALSE, this
 152  *                      value will be unmodified, but some elements in the
 153  *                      linked list may be modified.
 154  * \param format        Mesa gl_format enum describing the pixel format
 155  * \param depth_bits    Array of depth buffer sizes to be exposed.
 156  * \param stencil_bits  Array of stencil buffer sizes to be exposed.
 157  * \param num_depth_stencil_bits  Number of entries in both \c depth_bits and
 158  *                      \c stencil_bits.
 159  * \param db_modes      Array of buffer swap modes.  If an element has a
 160  *                      value of \c GLX_NONE, then it represents a
 161  *                      single-buffered mode.  Other valid values are
 162  *                      \c GLX_SWAP_EXCHANGE_OML, \c GLX_SWAP_COPY_OML, and
 163  *                      \c GLX_SWAP_UNDEFINED_OML.  See the
 164  *                      GLX_OML_swap_method extension spec for more details.
 165  * \param num_db_modes  Number of entries in \c db_modes.
 166  * \param msaa_samples  Array of msaa sample count. 0 represents a visual
 167  *                      without a multisample buffer.
 168  * \param num_msaa_modes Number of entries in \c msaa_samples.
 169  * \param visType       GLX visual type.  Usually either \c GLX_TRUE_COLOR or
 170  *                      \c GLX_DIRECT_COLOR.
 171  *
 172  * \returns
 173  * Pointer to any array of pointers to the \c __DRIconfig structures created
 174  * for the specified formats.  If there is an error, \c NULL is returned.
 175  * Currently the only cause of failure is a bad parameter (i.e., unsupported
 176  * \c format).
 177  */
 178 __DRIconfig **
 179 driCreateConfigs(gl_format format,
 180                  const uint8_t * depth_bits, const uint8_t * stencil_bits,
 181                  unsigned num_depth_stencil_bits,
 182                  const GLenum * db_modes, unsigned num_db_modes,
 183                  const uint8_t * msaa_samples, unsigned num_msaa_modes,
 184                  GLboolean enable_accum)
 185 {
 186    static const uint32_t masks_table[][4] = {
 187       /* MESA_FORMAT_RGB565 */
 188       { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 },
 189       /* MESA_FORMAT_XRGB8888 */
 190       { 0x00FF0000, 0x0000FF00, 0x000000FF, 0x00000000 },
 191       /* MESA_FORMAT_ARGB8888 */
 192       { 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000 },
 193       /* MESA_FORMAT_XRGB2101010_UNORM */
 194       { 0x3FF00000, 0x000FFC00, 0x000003FF, 0x00000000 },
 195       /* MESA_FORMAT_ARGB2101010 */
 196       { 0x3FF00000, 0x000FFC00, 0x000003FF, 0xC0000000 },
 197    };
 198
 199    const uint32_t * masks;
 200    __DRIconfig **configs, **c;
 201    struct gl_config *modes;
 202    unsigned i, j, k, h;
 203    unsigned num_modes;
 204    unsigned num_accum_bits = (enable_accum) ? 2 : 1;
 205    int red_bits;
 206    int green_bits;
 207    int blue_bits;
 208    int alpha_bits;
 209    bool is_srgb;
 210
 211    switch (format) {
 212    case MESA_FORMAT_RGB565:
 213       masks = masks_table[0];
 214       break;
 215    case MESA_FORMAT_XRGB8888:
 216       masks = masks_table[1];
 217       break;
 218    case MESA_FORMAT_ARGB8888:
 219    case MESA_FORMAT_SARGB8:
 220       masks = masks_table[2];
 221       break;
 222    case MESA_FORMAT_XRGB2101010_UNORM:
 223       masks = masks_table[3];
 224       break;
 225    case MESA_FORMAT_ARGB2101010:
 226       masks = masks_table[4];
 227       break;
 228    default:
 229       fprintf(stderr, "[%s:%u] Unknown framebuffer type %s (%d).\n",
 230               __FUNCTION__, __LINE__,
 231               _mesa_get_format_name(format), format);
 232       return NULL;
 233    }
 234
 235    red_bits = _mesa_get_format_bits(format, GL_RED_BITS);
 236    green_bits = _mesa_get_format_bits(format, GL_GREEN_BITS);
 237    blue_bits = _mesa_get_format_bits(format, GL_BLUE_BITS);
 238    alpha_bits = _mesa_get_format_bits(format, GL_ALPHA_BITS);
 239    is_srgb = _mesa_get_format_color_encoding(format) == GL_SRGB;
 240
 241    num_modes = num_depth_stencil_bits * num_db_modes * num_accum_bits * num_msaa_modes;
 242    configs = calloc(1, (num_modes + 1) * sizeof *configs);
 243    if (configs == NULL)
 244        return NULL;
 245
 246     c = configs;
 247     for ( k = 0 ; k < num_depth_stencil_bits ; k++ ) {
 248         for ( i = 0 ; i < num_db_modes ; i++ ) {
 249             for ( h = 0 ; h < num_msaa_modes; h++ ) {
 250                 for ( j = 0 ; j < num_accum_bits ; j++ ) {
 251                     *c = malloc (sizeof **c);
 252                     modes = &(*c)->modes;
 253                     c++;
 254
 255                     memset(modes, 0, sizeof *modes);
 256                     modes->redBits   = red_bits;
 257                     modes->greenBits = green_bits;
 258                     modes->blueBits  = blue_bits;
 259                     modes->alphaBits = alpha_bits;
 260                     modes->redMask   = masks[0];
 261                     modes->greenMask = masks[1];
 262                     modes->blueMask  = masks[2];
 263                     modes->alphaMask = masks[3];
 264                     modes->rgbBits   = modes->redBits + modes->greenBits
 265                         + modes->blueBits + modes->alphaBits;
 266
 267                     modes->accumRedBits   = 16 * j;
 268                     modes->accumGreenBits = 16 * j;
 269                     modes->accumBlueBits  = 16 * j;
 270                     modes->accumAlphaBits = (masks[3] != 0) ? 16 * j : 0;
 271                     modes->visualRating = (j == 0) ? GLX_NONE : GLX_SLOW_CONFIG;
 272
 273                     modes->stencilBits = stencil_bits[k];
 274                     modes->depthBits = depth_bits[k];
 275
 276                     modes->transparentPixel = GLX_NONE;
 277                     modes->transparentRed = GLX_DONT_CARE;
 278                     modes->transparentGreen = GLX_DONT_CARE;
 279                     modes->transparentBlue = GLX_DONT_CARE;
 280                     modes->transparentAlpha = GLX_DONT_CARE;
 281                     modes->transparentIndex = GLX_DONT_CARE;
 282                     modes->rgbMode = GL_TRUE;
 283
 284                     if ( db_modes[i] == GLX_NONE ) {
 285                         modes->doubleBufferMode = GL_FALSE;
 286                     }
 287                     else {
 288                         modes->doubleBufferMode = GL_TRUE;
 289                         modes->swapMethod = db_modes[i];
 290                     }
 291
 292                     modes->samples = msaa_samples[h];
 293                     modes->sampleBuffers = modes->samples ? 1 : 0;
 294
 295
 296                     modes->haveAccumBuffer = ((modes->accumRedBits +
 297                                            modes->accumGreenBits +
 298                                            modes->accumBlueBits +
 299                                            modes->accumAlphaBits) > 0);
 300                     modes->haveDepthBuffer = (modes->depthBits > 0);
 301                     modes->haveStencilBuffer = (modes->stencilBits > 0);
 302
 303                     modes->bindToTextureRgb = GL_TRUE;
 304                     modes->bindToTextureRgba = GL_TRUE;
 305                     modes->bindToMipmapTexture = GL_FALSE;
 306                     modes->bindToTextureTargets =
 307                         __DRI_ATTRIB_TEXTURE_1D_BIT |
 308                         __DRI_ATTRIB_TEXTURE_2D_BIT |
 309                         __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT;
 310
 311                     modes->sRGBCapable = is_srgb;
 312                 }
 313             }
 314         }
 315     }
 316     *c = NULL;
 317
 318     return configs;
 319 }
 320
 321 __DRIconfig **driConcatConfigs(__DRIconfig **a,
 322                                __DRIconfig **b)
 323 {
 324     __DRIconfig **all;
 325     int i, j, index;
 326
 327     if (a == NULL || a[0] == NULL)
 328        return b;
 329     else if (b == NULL || b[0] == NULL)
 330        return a;
 331
 332     i = 0;
 333     while (a[i] != NULL)
 334         i++;
 335     j = 0;
 336     while (b[j] != NULL)
 337         j++;
 338
 339     all = malloc((i + j + 1) * sizeof *all);
 340     index = 0;
 341     for (i = 0; a[i] != NULL; i++)
 342         all[index++] = a[i];
 343     for (j = 0; b[j] != NULL; j++)
 344         all[index++] = b[j];
 345     all[index++] = NULL;
 346
 347     free(a);
 348     free(b);
 349
 350     return all;
 351 }
 352
 353 #define __ATTRIB(attrib, field) \
 354     { attrib, offsetof(struct gl_config, field) }
 355
 356 static const struct { unsigned int attrib, offset; } attribMap[] = {
 357     __ATTRIB(__DRI_ATTRIB_BUFFER_SIZE,                  rgbBits),
 358     __ATTRIB(__DRI_ATTRIB_LEVEL,                        level),
 359     __ATTRIB(__DRI_ATTRIB_RED_SIZE,                     redBits),
 360     __ATTRIB(__DRI_ATTRIB_GREEN_SIZE,                   greenBits),
 361     __ATTRIB(__DRI_ATTRIB_BLUE_SIZE,                    blueBits),
 362     __ATTRIB(__DRI_ATTRIB_ALPHA_SIZE,                   alphaBits),
 363     __ATTRIB(__DRI_ATTRIB_DEPTH_SIZE,                   depthBits),
 364     __ATTRIB(__DRI_ATTRIB_STENCIL_SIZE,                 stencilBits),
 365     __ATTRIB(__DRI_ATTRIB_ACCUM_RED_SIZE,               accumRedBits),
 366     __ATTRIB(__DRI_ATTRIB_ACCUM_GREEN_SIZE,             accumGreenBits),
 367     __ATTRIB(__DRI_ATTRIB_ACCUM_BLUE_SIZE,              accumBlueBits),
 368     __ATTRIB(__DRI_ATTRIB_ACCUM_ALPHA_SIZE,             accumAlphaBits),
 369     __ATTRIB(__DRI_ATTRIB_SAMPLE_BUFFERS,               sampleBuffers),
 370     __ATTRIB(__DRI_ATTRIB_SAMPLES,                      samples),
 371     __ATTRIB(__DRI_ATTRIB_DOUBLE_BUFFER,                doubleBufferMode),
 372     __ATTRIB(__DRI_ATTRIB_STEREO,                       stereoMode),
 373     __ATTRIB(__DRI_ATTRIB_AUX_BUFFERS,                  numAuxBuffers),
 374     __ATTRIB(__DRI_ATTRIB_TRANSPARENT_TYPE,             transparentPixel),
 375     __ATTRIB(__DRI_ATTRIB_TRANSPARENT_INDEX_VALUE,      transparentPixel),
 376     __ATTRIB(__DRI_ATTRIB_TRANSPARENT_RED_VALUE,        transparentRed),
 377     __ATTRIB(__DRI_ATTRIB_TRANSPARENT_GREEN_VALUE,      transparentGreen),
 378     __ATTRIB(__DRI_ATTRIB_TRANSPARENT_BLUE_VALUE,       transparentBlue),
 379     __ATTRIB(__DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE,      transparentAlpha),
 380     __ATTRIB(__DRI_ATTRIB_RED_MASK,                     redMask),
 381     __ATTRIB(__DRI_ATTRIB_GREEN_MASK,                   greenMask),
 382     __ATTRIB(__DRI_ATTRIB_BLUE_MASK,                    blueMask),
 383     __ATTRIB(__DRI_ATTRIB_ALPHA_MASK,                   alphaMask),
 384     __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_WIDTH,            maxPbufferWidth),
 385     __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_HEIGHT,           maxPbufferHeight),
 386     __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_PIXELS,           maxPbufferPixels),
 387     __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH,        optimalPbufferWidth),
 388     __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT,       optimalPbufferHeight),
 389     __ATTRIB(__DRI_ATTRIB_SWAP_METHOD,                  swapMethod),
 390     __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGB,          bindToTextureRgb),
 391     __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGBA,         bindToTextureRgba),
 392     __ATTRIB(__DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE,       bindToMipmapTexture),
 393     __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS,      bindToTextureTargets),
 394     __ATTRIB(__DRI_ATTRIB_YINVERTED,                    yInverted),
 395     __ATTRIB(__DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE,     sRGBCapable),
 396
 397     /* The struct field doesn't matter here, these are handled by the
 398      * switch in driGetConfigAttribIndex.  We need them in the array
 399      * so the iterator includes them though.*/
 400     __ATTRIB(__DRI_ATTRIB_RENDER_TYPE,                  level),
 401     __ATTRIB(__DRI_ATTRIB_CONFIG_CAVEAT,                level),
 402     __ATTRIB(__DRI_ATTRIB_SWAP_METHOD,                  level)
 403 };
 404
 405
 406 /**
 407  * Return the value of a configuration attribute.  The attribute is
 408  * indicated by the index.
 409  */
 410 static int
 411 driGetConfigAttribIndex(const __DRIconfig *config,
 412                         unsigned int index, unsigned int *value)
 413 {
 414     switch (attribMap[index].attrib) {
 415     case __DRI_ATTRIB_RENDER_TYPE:
 416         /* no support for color index mode */
 417         *value = __DRI_ATTRIB_RGBA_BIT;
 418         break;
 419     case __DRI_ATTRIB_CONFIG_CAVEAT:
 420         if (config->modes.visualRating == GLX_NON_CONFORMANT_CONFIG)
 421             *value = __DRI_ATTRIB_NON_CONFORMANT_CONFIG;
 422         else if (config->modes.visualRating == GLX_SLOW_CONFIG)
 423             *value = __DRI_ATTRIB_SLOW_BIT;
 424         else
 425             *value = 0;
 426         break;
 427     case __DRI_ATTRIB_SWAP_METHOD:
 428         /* XXX no return value??? */
 429         break;
 430
 431     default:
 432         /* any other int-sized field */
 433         *value = *(unsigned int *)
 434             ((char *) &config->modes + attribMap[index].offset);
 435
 436         break;
 437     }
 438
 439     return GL_TRUE;
 440 }
 441
 442
 443 /**
 444  * Get the value of a configuration attribute.
 445  * \param attrib  the attribute (one of the _DRI_ATTRIB_x tokens)
 446  * \param value  returns the attribute's value
 447  * \return 1 for success, 0 for failure
 448  */
 449 int
 450 driGetConfigAttrib(const __DRIconfig *config,
 451                    unsigned int attrib, unsigned int *value)
 452 {
 453     int i;
 454
 455     for (i = 0; i < ARRAY_SIZE(attribMap); i++)
 456         if (attribMap[i].attrib == attrib)
 457             return driGetConfigAttribIndex(config, i, value);
 458
 459     return GL_FALSE;
 460 }
 461
 462
 463 /**
 464  * Get a configuration attribute name and value, given an index.
 465  * \param index  which field of the __DRIconfig to query
 466  * \param attrib  returns the attribute name (one of the _DRI_ATTRIB_x tokens)
 467  * \param value  returns the attribute's value
 468  * \return 1 for success, 0 for failure
 469  */
 470 int
 471 driIndexConfigAttrib(const __DRIconfig *config, int index,
 472                      unsigned int *attrib, unsigned int *value)
 473 {
 474     if (index >= 0 && index < ARRAY_SIZE(attribMap)) {
 475         *attrib = attribMap[index].attrib;
 476         return driGetConfigAttribIndex(config, index, value);
 477     }
 478
 479     return GL_FALSE;
 480 }
 481
 482 /**
 483  * Implement queries for values that are common across all Mesa drivers
 484  *
 485  * Currently only the following queries are supported by this function:
 486  *
 487  *     - \c __DRI2_RENDERER_VERSION
 488  *     - \c __DRI2_RENDERER_OPENGL_CORE_PROFILE_VERSION
 489  *     - \c __DRI2_RENDERER_OPENGL_COMPATIBLITY_PROFILE_VERSION
 490  *     - \c __DRI2_RENDERER_ES_PROFILE_VERSION
 491  *     - \c __DRI2_RENDERER_ES2_PROFILE_VERSION
 492  *
 493  * \returns
 494  * Zero if a recognized value of \c param is supplied, -1 otherwise.
 495  */
 496 int
 497 driQueryRendererIntegerCommon(__DRIscreen *psp, int param, unsigned int *value)
 498 {
 499    switch (param) {
 500    case __DRI2_RENDERER_VERSION: {
 501       static const char *const ver = PACKAGE_VERSION;
 502       char *endptr;
 503       int v[3];
 504
 505       v[0] = strtol(ver, &endptr, 10);
 506       assert(endptr[0] == '.');
 507       if (endptr[0] != '.')
 508          return -1;
 509
 510       v[1] = strtol(endptr + 1, &endptr, 10);
 511       assert(endptr[0] == '.');
 512       if (endptr[0] != '.')
 513          return -1;
 514
 515       v[2] = strtol(endptr + 1, &endptr, 10);
 516
 517       value[0] = v[0];
 518       value[1] = v[1];
 519       value[2] = v[2];
 520       return 0;
 521    }
 522    case __DRI2_RENDERER_OPENGL_CORE_PROFILE_VERSION:
 523       value[0] = psp->max_gl_core_version / 10;
 524       value[1] = psp->max_gl_core_version % 10;
 525       return 0;
 526    case __DRI2_RENDERER_OPENGL_COMPATIBILITY_PROFILE_VERSION:
 527       value[0] = psp->max_gl_compat_version / 10;
 528       value[1] = psp->max_gl_compat_version % 10;
 529       return 0;
 530    case __DRI2_RENDERER_OPENGL_ES_PROFILE_VERSION:
 531       value[0] = psp->max_gl_es1_version / 10;
 532       value[1] = psp->max_gl_es1_version % 10;
 533       return 0;
 534    case __DRI2_RENDERER_OPENGL_ES2_PROFILE_VERSION:
 535       value[0] = psp->max_gl_es2_version / 10;
 536       value[1] = psp->max_gl_es2_version % 10;
 537       return 0;
 538    default:
 539       break;
 540    }
 541
 542    return -1;
 543 }