4 // Copyright (C) 2006 Matthias Braun <matze@braunis.de>
6 // This program is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU General Public License
8 // as published by the Free Software Foundation; either version 2
9 // of the License, or (at your option) any later version.
11 // This program is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License
17 // along with this program; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 #ifndef __GLUTIL_HPP__
20 #define __GLUTIL_HPP__
22 typedef unsigned int GLenum;
27 #define GL_SRC_COLOR 0x0300
28 #define GL_SRC_ALPHA 0x0302
29 #define GL_ONE_MINUS_SRC_ALPHA 0x0303
30 #define GL_DST_COLOR 0x0306
44 #include <OpenGL/gl.h>
45 #include <OpenGL/glext.h>
48 static inline void check_gl_error(const char* message)
51 GLenum error = glGetError();
52 if(error != GL_NO_ERROR) {
53 std::ostringstream msg;
54 msg << "OpenGLError while '" << message << "': ";
57 msg << "INVALID_ENUM: An unacceptable value is specified for an "
58 "enumerated argument.";
60 case GL_INVALID_VALUE:
61 msg << "INVALID_VALUE: A numeric argument is out of range.";
63 case GL_INVALID_OPERATION:
64 msg << "INVALID_OPERATION: The specified operation is not allowed "
65 "in the current state.";
67 case GL_STACK_OVERFLOW:
68 msg << "STACK_OVERFLOW: This command would cause a stack overflow.";
70 case GL_STACK_UNDERFLOW:
71 msg << "STACK_UNDERFLOW: This command would cause a stack underflow.";
73 case GL_OUT_OF_MEMORY:
74 msg << "OUT_OF_MEMORY: There is not enough memory left to execute the "
77 #ifdef GL_TABLE_TOO_LARGE
78 case GL_TABLE_TOO_LARGE:
79 msg << "TABLE_TOO_LARGE: table is too large";
83 msg << "Unknown error (code " << error << ")";
86 throw std::runtime_error(msg.str());
93 static inline void assert_gl(const char* message)
96 check_gl_error(message);
106 #define GL_SRC_ALPHA 0
107 #define GL_ONE_MINUS_SRC_ALPHA 1