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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 <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. uint64_t
  46. driParseDebugString( const char * debug,
  47.                      const struct dri_debug_control * control  )
  48. {
  49.    uint64_t flag = 0;
  50.  
  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 mesa_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(mesa_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_B5G6R5_UNORM */
  188.       { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 },
  189.       /* MESA_FORMAT_B8G8R8X8_UNORM */
  190.       { 0x00FF0000, 0x0000FF00, 0x000000FF, 0x00000000 },
  191.       /* MESA_FORMAT_B8G8R8A8_UNORM */
  192.       { 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000 },
  193.       /* MESA_FORMAT_B10G10R10X2_UNORM */
  194.       { 0x3FF00000, 0x000FFC00, 0x000003FF, 0x00000000 },
  195.       /* MESA_FORMAT_B10G10R10A2_UNORM */
  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_B5G6R5_UNORM:
  213.       masks = masks_table[0];
  214.       break;
  215.    case MESA_FORMAT_B8G8R8X8_UNORM:
  216.       masks = masks_table[1];
  217.       break;
  218.    case MESA_FORMAT_B8G8R8A8_UNORM:
  219.    case MESA_FORMAT_B8G8R8A8_SRGB:
  220.       masks = masks_table[2];
  221.       break;
  222.    case MESA_FORMAT_B10G10R10X2_UNORM:
  223.       masks = masks_table[3];
  224.       break;
  225.    case MESA_FORMAT_B10G10R10A2_UNORM:
  226.       masks = masks_table[4];
  227.       break;
  228.    default:
  229.       fprintf(stderr, "[%s:%u] Unknown framebuffer type %s (%d).\n",
  230.               __func__, __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(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->yInverted = GL_TRUE;
  312.                     modes->sRGBCapable = is_srgb;
  313.                 }
  314.             }
  315.         }
  316.     }
  317.     *c = NULL;
  318.  
  319.     return configs;
  320. }
  321.  
  322. __DRIconfig **driConcatConfigs(__DRIconfig **a,
  323.                                __DRIconfig **b)
  324. {
  325.     __DRIconfig **all;
  326.     int i, j, index;
  327.  
  328.     if (a == NULL || a[0] == NULL)
  329.        return b;
  330.     else if (b == NULL || b[0] == NULL)
  331.        return a;
  332.  
  333.     i = 0;
  334.     while (a[i] != NULL)
  335.         i++;
  336.     j = 0;
  337.     while (b[j] != NULL)
  338.         j++;
  339.    
  340.     all = malloc((i + j + 1) * sizeof *all);
  341.     index = 0;
  342.     for (i = 0; a[i] != NULL; i++)
  343.         all[index++] = a[i];
  344.     for (j = 0; b[j] != NULL; j++)
  345.         all[index++] = b[j];
  346.     all[index++] = NULL;
  347.  
  348.     free(a);
  349.     free(b);
  350.  
  351.     return all;
  352. }
  353.  
  354. #define __ATTRIB(attrib, field) \
  355.     { attrib, offsetof(struct gl_config, field) }
  356.  
  357. static const struct { unsigned int attrib, offset; } attribMap[] = {
  358.     __ATTRIB(__DRI_ATTRIB_BUFFER_SIZE,                  rgbBits),
  359.     __ATTRIB(__DRI_ATTRIB_LEVEL,                        level),
  360.     __ATTRIB(__DRI_ATTRIB_RED_SIZE,                     redBits),
  361.     __ATTRIB(__DRI_ATTRIB_GREEN_SIZE,                   greenBits),
  362.     __ATTRIB(__DRI_ATTRIB_BLUE_SIZE,                    blueBits),
  363.     __ATTRIB(__DRI_ATTRIB_ALPHA_SIZE,                   alphaBits),
  364.     __ATTRIB(__DRI_ATTRIB_DEPTH_SIZE,                   depthBits),
  365.     __ATTRIB(__DRI_ATTRIB_STENCIL_SIZE,                 stencilBits),
  366.     __ATTRIB(__DRI_ATTRIB_ACCUM_RED_SIZE,               accumRedBits),
  367.     __ATTRIB(__DRI_ATTRIB_ACCUM_GREEN_SIZE,             accumGreenBits),
  368.     __ATTRIB(__DRI_ATTRIB_ACCUM_BLUE_SIZE,              accumBlueBits),
  369.     __ATTRIB(__DRI_ATTRIB_ACCUM_ALPHA_SIZE,             accumAlphaBits),
  370.     __ATTRIB(__DRI_ATTRIB_SAMPLE_BUFFERS,               sampleBuffers),
  371.     __ATTRIB(__DRI_ATTRIB_SAMPLES,                      samples),
  372.     __ATTRIB(__DRI_ATTRIB_DOUBLE_BUFFER,                doubleBufferMode),
  373.     __ATTRIB(__DRI_ATTRIB_STEREO,                       stereoMode),
  374.     __ATTRIB(__DRI_ATTRIB_AUX_BUFFERS,                  numAuxBuffers),
  375.     __ATTRIB(__DRI_ATTRIB_TRANSPARENT_TYPE,             transparentPixel),
  376.     __ATTRIB(__DRI_ATTRIB_TRANSPARENT_INDEX_VALUE,      transparentPixel),
  377.     __ATTRIB(__DRI_ATTRIB_TRANSPARENT_RED_VALUE,        transparentRed),
  378.     __ATTRIB(__DRI_ATTRIB_TRANSPARENT_GREEN_VALUE,      transparentGreen),
  379.     __ATTRIB(__DRI_ATTRIB_TRANSPARENT_BLUE_VALUE,       transparentBlue),
  380.     __ATTRIB(__DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE,      transparentAlpha),
  381.     __ATTRIB(__DRI_ATTRIB_RED_MASK,                     redMask),
  382.     __ATTRIB(__DRI_ATTRIB_GREEN_MASK,                   greenMask),
  383.     __ATTRIB(__DRI_ATTRIB_BLUE_MASK,                    blueMask),
  384.     __ATTRIB(__DRI_ATTRIB_ALPHA_MASK,                   alphaMask),
  385.     __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_WIDTH,            maxPbufferWidth),
  386.     __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_HEIGHT,           maxPbufferHeight),
  387.     __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_PIXELS,           maxPbufferPixels),
  388.     __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH,        optimalPbufferWidth),
  389.     __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT,       optimalPbufferHeight),
  390.     __ATTRIB(__DRI_ATTRIB_SWAP_METHOD,                  swapMethod),
  391.     __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGB,          bindToTextureRgb),
  392.     __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGBA,         bindToTextureRgba),
  393.     __ATTRIB(__DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE,       bindToMipmapTexture),
  394.     __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS,      bindToTextureTargets),
  395.     __ATTRIB(__DRI_ATTRIB_YINVERTED,                    yInverted),
  396.     __ATTRIB(__DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE,     sRGBCapable),
  397.  
  398.     /* The struct field doesn't matter here, these are handled by the
  399.      * switch in driGetConfigAttribIndex.  We need them in the array
  400.      * so the iterator includes them though.*/
  401.     __ATTRIB(__DRI_ATTRIB_RENDER_TYPE,                  level),
  402.     __ATTRIB(__DRI_ATTRIB_CONFIG_CAVEAT,                level),
  403.     __ATTRIB(__DRI_ATTRIB_SWAP_METHOD,                  level)
  404. };
  405.  
  406.  
  407. /**
  408.  * Return the value of a configuration attribute.  The attribute is
  409.  * indicated by the index.
  410.  */
  411. static int
  412. driGetConfigAttribIndex(const __DRIconfig *config,
  413.                         unsigned int index, unsigned int *value)
  414. {
  415.     switch (attribMap[index].attrib) {
  416.     case __DRI_ATTRIB_RENDER_TYPE:
  417.         /* no support for color index mode */
  418.         *value = __DRI_ATTRIB_RGBA_BIT;
  419.         break;
  420.     case __DRI_ATTRIB_CONFIG_CAVEAT:
  421.         if (config->modes.visualRating == GLX_NON_CONFORMANT_CONFIG)
  422.             *value = __DRI_ATTRIB_NON_CONFORMANT_CONFIG;
  423.         else if (config->modes.visualRating == GLX_SLOW_CONFIG)
  424.             *value = __DRI_ATTRIB_SLOW_BIT;
  425.         else
  426.             *value = 0;
  427.         break;
  428.     case __DRI_ATTRIB_SWAP_METHOD:
  429.         /* XXX no return value??? */
  430.         break;
  431.  
  432.     default:
  433.         /* any other int-sized field */
  434.         *value = *(unsigned int *)
  435.             ((char *) &config->modes + attribMap[index].offset);
  436.        
  437.         break;
  438.     }
  439.  
  440.     return GL_TRUE;
  441. }
  442.  
  443.  
  444. /**
  445.  * Get the value of a configuration attribute.
  446.  * \param attrib  the attribute (one of the _DRI_ATTRIB_x tokens)
  447.  * \param value  returns the attribute's value
  448.  * \return 1 for success, 0 for failure
  449.  */
  450. int
  451. driGetConfigAttrib(const __DRIconfig *config,
  452.                    unsigned int attrib, unsigned int *value)
  453. {
  454.     int i;
  455.  
  456.     for (i = 0; i < ARRAY_SIZE(attribMap); i++)
  457.         if (attribMap[i].attrib == attrib)
  458.             return driGetConfigAttribIndex(config, i, value);
  459.  
  460.     return GL_FALSE;
  461. }
  462.  
  463.  
  464. /**
  465.  * Get a configuration attribute name and value, given an index.
  466.  * \param index  which field of the __DRIconfig to query
  467.  * \param attrib  returns the attribute name (one of the _DRI_ATTRIB_x tokens)
  468.  * \param value  returns the attribute's value
  469.  * \return 1 for success, 0 for failure
  470.  */
  471. int
  472. driIndexConfigAttrib(const __DRIconfig *config, int index,
  473.                      unsigned int *attrib, unsigned int *value)
  474. {
  475.     if (index >= 0 && index < ARRAY_SIZE(attribMap)) {
  476.         *attrib = attribMap[index].attrib;
  477.         return driGetConfigAttribIndex(config, index, value);
  478.     }
  479.  
  480.     return GL_FALSE;
  481. }
  482.  
  483. /**
  484.  * Implement queries for values that are common across all Mesa drivers
  485.  *
  486.  * Currently only the following queries are supported by this function:
  487.  *
  488.  *     - \c __DRI2_RENDERER_VERSION
  489.  *     - \c __DRI2_RENDERER_PREFERRED_PROFILE
  490.  *     - \c __DRI2_RENDERER_OPENGL_CORE_PROFILE_VERSION
  491.  *     - \c __DRI2_RENDERER_OPENGL_COMPATIBLITY_PROFILE_VERSION
  492.  *     - \c __DRI2_RENDERER_ES_PROFILE_VERSION
  493.  *     - \c __DRI2_RENDERER_ES2_PROFILE_VERSION
  494.  *
  495.  * \returns
  496.  * Zero if a recognized value of \c param is supplied, -1 otherwise.
  497.  */
  498. int
  499. driQueryRendererIntegerCommon(__DRIscreen *psp, int param, unsigned int *value)
  500. {
  501.    switch (param) {
  502.    case __DRI2_RENDERER_VERSION: {
  503.       static const char *const ver = PACKAGE_VERSION;
  504.       char *endptr;
  505.       int v[3];
  506.  
  507.       v[0] = strtol(ver, &endptr, 10);
  508.       assert(endptr[0] == '.');
  509.       if (endptr[0] != '.')
  510.          return -1;
  511.  
  512.       v[1] = strtol(endptr + 1, &endptr, 10);
  513.       assert(endptr[0] == '.');
  514.       if (endptr[0] != '.')
  515.          return -1;
  516.  
  517.       v[2] = strtol(endptr + 1, &endptr, 10);
  518.  
  519.       value[0] = v[0];
  520.       value[1] = v[1];
  521.       value[2] = v[2];
  522.       return 0;
  523.    }
  524.    case __DRI2_RENDERER_PREFERRED_PROFILE:
  525.       value[0] = (psp->max_gl_core_version != 0)
  526.          ? (1U << __DRI_API_OPENGL_CORE) : (1U << __DRI_API_OPENGL);
  527.       return 0;
  528.    case __DRI2_RENDERER_OPENGL_CORE_PROFILE_VERSION:
  529.       value[0] = psp->max_gl_core_version / 10;
  530.       value[1] = psp->max_gl_core_version % 10;
  531.       return 0;
  532.    case __DRI2_RENDERER_OPENGL_COMPATIBILITY_PROFILE_VERSION:
  533.       value[0] = psp->max_gl_compat_version / 10;
  534.       value[1] = psp->max_gl_compat_version % 10;
  535.       return 0;
  536.    case __DRI2_RENDERER_OPENGL_ES_PROFILE_VERSION:
  537.       value[0] = psp->max_gl_es1_version / 10;
  538.       value[1] = psp->max_gl_es1_version % 10;
  539.       return 0;
  540.    case __DRI2_RENDERER_OPENGL_ES2_PROFILE_VERSION:
  541.       value[0] = psp->max_gl_es2_version / 10;
  542.       value[1] = psp->max_gl_es2_version % 10;
  543.       return 0;
  544.    default:
  545.       break;
  546.    }
  547.  
  548.    return -1;
  549. }
  550.