src/egl/main/eglmisc.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 /**
  30  * Small/misc EGL functions
  31  */
  32
  33
  34 #include <assert.h>
  35 #include <string.h>
  36 #include "eglglobals.h"
  37 #include "eglmisc.h"
  38
  39
  40 /**
  41  * Examine the individual extension enable/disable flags and recompute
  42  * the driver's Extensions string.
  43  */
  44 static void
  45 _eglUpdateExtensionsString(_EGLDriver *drv)
  46 {
  47    drv->Extensions.String[0] = 0;
  48
  49    if (drv->Extensions.MESA_screen_surface)
  50       strcat(drv->Extensions.String, "EGL_MESA_screen_surface ");
  51    if (drv->Extensions.MESA_copy_context)
  52       strcat(drv->Extensions.String, "EGL_MESA_copy_context ");
  53    assert(strlen(drv->Extensions.String) < _EGL_MAX_EXTENSIONS_LEN);
  54 }
  55
  56
  57 static void
  58 _eglUpdateAPIsString(_EGLDriver *drv)
  59 {
  60    _eglGlobal.ClientAPIs[0] = 0;
  61
  62    if (_eglGlobal.ClientAPIsMask & EGL_OPENGL_BIT)
  63       strcat(_eglGlobal.ClientAPIs, "OpenGL ");
  64
  65    if (_eglGlobal.ClientAPIsMask & EGL_OPENGL_ES_BIT)
  66       strcat(_eglGlobal.ClientAPIs, "OpenGL_ES ");
  67
  68    if (_eglGlobal.ClientAPIsMask & EGL_OPENGL_ES2_BIT)
  69       strcat(_eglGlobal.ClientAPIs, "OpenGL_ES2 ");
  70
  71    if (_eglGlobal.ClientAPIsMask & EGL_OPENVG_BIT)
  72       strcat(_eglGlobal.ClientAPIs, "OpenVG ");
  73
  74    assert(strlen(_eglGlobal.ClientAPIs) < sizeof(_eglGlobal.ClientAPIs));
  75 }
  76
  77
  78
  79 const char *
  80 _eglQueryString(_EGLDriver *drv, EGLDisplay dpy, EGLint name)
  81 {
  82    (void) drv;
  83    (void) dpy;
  84    switch (name) {
  85    case EGL_VENDOR:
  86       return _EGL_VENDOR_STRING;
  87    case EGL_VERSION:
  88       return drv->Version;
  89    case EGL_EXTENSIONS:
  90       _eglUpdateExtensionsString(drv);
  91       return drv->Extensions.String;
  92 #ifdef EGL_VERSION_1_2
  93    case EGL_CLIENT_APIS:
  94       _eglUpdateAPIsString(drv);
  95       return _eglGlobal.ClientAPIs;
  96 #endif
  97    default:
  98       _eglError(EGL_BAD_PARAMETER, "eglQueryString");
  99       return NULL;
 100    }
 101 }
 102
 103
 104 EGLBoolean
 105 _eglWaitGL(_EGLDriver *drv, EGLDisplay dpy)
 106 {
 107    /* just a placeholder */
 108    (void) drv;
 109    (void) dpy;
 110    return EGL_TRUE;
 111 }
 112
 113
 114 EGLBoolean
 115 _eglWaitNative(_EGLDriver *drv, EGLDisplay dpy, EGLint engine)
 116 {
 117    /* just a placeholder */
 118    (void) drv;
 119    (void) dpy;
 120    switch (engine) {
 121    case EGL_CORE_NATIVE_ENGINE:
 122       break;
 123    default:
 124       _eglError(EGL_BAD_PARAMETER, "eglWaitNative(engine)");
 125       return EGL_FALSE;
 126    }
 127
 128    return EGL_TRUE;
 129 }