src/glx/query_renderer.c

   1 /*
   2  * Copyright © 2013 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23 #include "glxclient.h"
  24 #include "glx_error.h"
  25
  26 #include <assert.h>
  27
  28 static Bool
  29 __glXQueryRendererInteger(struct glx_screen *psc, int attribute,
  30                           unsigned int *value)
  31 {
  32    unsigned int values_for_query = 0;
  33    unsigned int buffer[32];
  34    int err;
  35
  36    /* This probably means the caller is trying to use an extension function
  37     * that isn't actually supported.
  38     */
  39    if (psc->vtable->query_renderer_integer == NULL)
  40       return False;
  41
  42    switch (attribute) {
  43    case GLX_RENDERER_VENDOR_ID_MESA:
  44    case GLX_RENDERER_DEVICE_ID_MESA:
  45       values_for_query = 1;
  46       break;
  47    case GLX_RENDERER_VERSION_MESA:
  48       values_for_query = 3;
  49       break;
  50    case GLX_RENDERER_ACCELERATED_MESA:
  51    case GLX_RENDERER_VIDEO_MEMORY_MESA:
  52    case GLX_RENDERER_UNIFIED_MEMORY_ARCHITECTURE_MESA:
  53    case GLX_RENDERER_PREFERRED_PROFILE_MESA:
  54       values_for_query = 1;
  55       break;
  56    case GLX_RENDERER_OPENGL_CORE_PROFILE_VERSION_MESA:
  57    case GLX_RENDERER_OPENGL_COMPATIBILITY_PROFILE_VERSION_MESA:
  58    case GLX_RENDERER_OPENGL_ES_PROFILE_VERSION_MESA:
  59    case GLX_RENDERER_OPENGL_ES2_PROFILE_VERSION_MESA:
  60       values_for_query = 2;
  61       break;
  62
  63    default:
  64       return False;
  65    }
  66
  67    err = psc->vtable->query_renderer_integer(psc, attribute, buffer);
  68
  69    /* If there was no error, copy the correct number of values from the driver
  70     * out to the application.
  71     */
  72    if (err == 0)
  73       memcpy(value, buffer, sizeof(unsigned int) * values_for_query);
  74
  75    return err == 0;
  76 }
  77
  78 _X_HIDDEN Bool
  79 glXQueryRendererIntegerMESA(Display *dpy, int screen,
  80                             int renderer, int attribute,
  81                             unsigned int *value)
  82 {
  83    struct glx_screen *psc;
  84
  85    if (dpy == NULL)
  86       return False;
  87
  88    /* This probably means the caller passed the wrong display pointer or
  89     * screen number.
  90     */
  91    psc = GetGLXScreenConfigs(dpy, screen);
  92    if (psc == NULL)
  93       return False;
  94
  95    /* Right now only a single renderer per display / screen combination is
  96     * supported.
  97     */
  98    if (renderer != 0)
  99       return False;
 100
 101    return __glXQueryRendererInteger(psc, attribute, value);
 102 }
 103
 104 _X_HIDDEN Bool
 105 glXQueryCurrentRendererIntegerMESA(int attribute, unsigned int *value)
 106 {
 107    struct glx_context *gc = __glXGetCurrentContext();
 108
 109    if (gc == &dummyContext)
 110       return False;
 111
 112    return __glXQueryRendererInteger(gc->psc, attribute, value);
 113 }
 114
 115 static const char *
 116 __glXQueryRendererString(struct glx_screen *psc, int attribute)
 117 {
 118    const char *value;
 119    int err;
 120
 121    /* This probably means the caller is trying to use an extension function
 122     * that isn't actually supported.
 123     */
 124    if (psc->vtable->query_renderer_integer == NULL)
 125       return NULL;
 126
 127    switch (attribute) {
 128    case GLX_RENDERER_VENDOR_ID_MESA:
 129    case GLX_RENDERER_DEVICE_ID_MESA:
 130       break;
 131    default:
 132       return NULL;
 133    }
 134
 135    err = psc->vtable->query_renderer_string(psc, attribute, &value);
 136    return (err == 0) ? value : NULL;
 137 }
 138
 139 _X_HIDDEN const char *
 140 glXQueryRendererStringMESA(Display *dpy, int screen,
 141                            int renderer, int attribute)
 142 {
 143    struct glx_screen *psc;
 144
 145    if (dpy == NULL)
 146       return False;
 147
 148    /* This probably means the caller passed the wrong display pointer or
 149     * screen number.
 150     */
 151    psc = GetGLXScreenConfigs(dpy, screen);
 152    if (psc == NULL)
 153       return False;
 154
 155    /* Right now only a single renderer per display / screen combination is
 156     * supported.
 157     */
 158    if (renderer != 0)
 159       return False;
 160
 161    return __glXQueryRendererString(psc, attribute);
 162 }
 163
 164 _X_HIDDEN const char *
 165 glXQueryCurrentRendererStringMESA(int attribute)
 166 {
 167    struct glx_context *gc = __glXGetCurrentContext();
 168
 169    if (gc == &dummyContext)
 170       return False;
 171
 172    return __glXQueryRendererString(gc->psc, attribute);
 173 }