1 /* gltest - small OpenGL tearing test program
2 * Copyright (C) 2012-2013 Ralf Jung <post@ralfj.de>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
24 static const char *glErrorToString(GLenum e)
26 #define CASE(name) case name: return #name
29 CASE(GL_INVALID_ENUM);
30 CASE(GL_INVALID_VALUE);
31 CASE(GL_INVALID_OPERATION);
33 CASE(GL_STACK_OVERFLOW);
34 CASE(GL_STACK_UNDERFLOW);
36 CASE(GL_OUT_OF_MEMORY);
37 default: return "<unknown>";
42 void checkGlError(const char *what)
44 GLenum e = glGetError();
45 if (e == GL_NO_ERROR) return;
46 fprintf(stderr, "GL error %d (%s): %s\n", e, glErrorToString(e), what);