2 * Mesa 3-D graphics library
5 * Copyright (C) 2010 LunarG Inc.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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23 * DEALINGS IN THE SOFTWARE.
26 * Chia-I Wu <olv@lunarg.com>
30 * This demo tests eglGetProcAddress and glClear.
40 typedef void (GL_APIENTRY *type_ClearColor)(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
41 typedef void (GL_APIENTRY *type_Clear)(GLbitfield mask);
43 static type_ClearColor fn_ClearColor;
44 static type_Clear fn_Clear;
55 fn_Clear(GL_COLOR_BUFFER_BIT);
61 get_proc(const char *name)
65 proc = (void *) eglGetProcAddress(name);
68 * note that eglGetProcAddress is not required to support non-extension
71 printf("failed to find %s (not necessarily a bug)\n", name);
81 fn_ClearColor = (type_ClearColor) get_proc("glClearColor");
82 fn_Clear = (type_Clear) get_proc("glClear");
84 fn_ClearColor(1.0, 0.4, 0.4, 0.0);
88 main(int argc, char *argv[])
90 eglutInitWindowSize(300, 300);
91 eglutInitAPIMask(EGLUT_OPENGL_ES1_BIT);
92 eglutInit(argc, argv);
94 eglutCreateWindow("clear");
96 eglutDisplayFunc(draw);