nkeynes@635: /**
nkeynes@636:  * $Id$
nkeynes@635:  *
nkeynes@635:  * GL-based support functions 
nkeynes@635:  *
nkeynes@635:  * Copyright (c) 2005 Nathan Keynes.
nkeynes@635:  *
nkeynes@635:  * This program is free software; you can redistribute it and/or modify
nkeynes@635:  * it under the terms of the GNU General Public License as published by
nkeynes@635:  * the Free Software Foundation; either version 2 of the License, or
nkeynes@635:  * (at your option) any later version.
nkeynes@635:  *
nkeynes@635:  * This program is distributed in the hope that it will be useful,
nkeynes@635:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
nkeynes@635:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nkeynes@635:  * GNU General Public License for more details.
nkeynes@635:  */
nkeynes@635: 
nkeynes@635: #ifndef lxdream_glutil_H
nkeynes@635: #define lxdream_glutil_H
nkeynes@635: 
nkeynes@687: #include <stdio.h>
nkeynes@635: #include "display.h"
nkeynes@635: 
nkeynes@736: #ifdef __cplusplus
nkeynes@736: extern "C" {
nkeynes@736: #endif
nkeynes@736: 
nkeynes@635: /**
nkeynes@635:  * Test if a specific extension is supported. From opengl.org
nkeynes@635:  * @param extension extension name to check for
nkeynes@635:  * @return TRUE if supported, otherwise FALSE.
nkeynes@635:  */
nkeynes@635: gboolean isGLExtensionSupported( const char *extension );
nkeynes@635: 
nkeynes@667: /**
nkeynes@687:  * Dump GL information to the output stream, usually for debugging purposes
nkeynes@687:  */
nkeynes@687: void glPrintInfo( FILE *out );
nkeynes@687: 
nkeynes@687: /**
nkeynes@1150:  * Check for a GL error and print a message if there is one
nkeynes@1150:  * @param context If not null, a string to be printed along side an error message
nkeynes@1159:  * @return FALSE if there was an error, otherwise TRUE
nkeynes@1150:  */
nkeynes@1150: gboolean gl_check_error( const char *context );
nkeynes@1150: /**
nkeynes@667:  * Test if secondary color (GL_COLOR_SUM) is supported.
nkeynes@667:  */
nkeynes@667: gboolean isGLSecondaryColorSupported();
nkeynes@667: 
nkeynes@667: gboolean isGLVertexBufferSupported();
nkeynes@1134: gboolean isGLVertexRangeSupported();
nkeynes@667: gboolean isGLPixelBufferSupported();
nkeynes@1140: gboolean isGLMultitextureSupported();
nkeynes@667: gboolean isGLMirroredTextureSupported();
nkeynes@635: 
nkeynes@1207: /****** Extension variant wrangling *****/
nkeynes@1207: 
nkeynes@1210: #if defined(GL_MIRRORED_REPEAT_ARB) && !defined(GL_MIRRORED_REPEAT)
nkeynes@1210: #define GL_MIRRORED_REPEAT GL_MIRRORED_REPEAT_ARB
nkeynes@1210: #endif
nkeynes@1207: 
nkeynes@1210: #if defined(GL_FRAMEBUFFER_EXT) && !defined(GL_FRAMEBUFFER)
nkeynes@1210: #define GL_FRAMEBUFFER GL_FRAMEBUFFER_EXT
nkeynes@1210: #endif
nkeynes@1210: 
nkeynes@1210: #if defined(GL_RENDERBUFFER_EXT) && !defined(GL_RENDERBUFFER)
nkeynes@1210: #define GL_RENDERBUFFER GL_RENDERBUFFER_EXT
nkeynes@1210: #endif
nkeynes@1210: 
nkeynes@1210: #if defined(GL_COLOR_ATTACHMENT0_EXT) && !defined(GL_COLOR_ATTACHMENT0)
nkeynes@1210: #define GL_COLOR_ATTACHMENT0 GL_COLOR_ATTACHMENT0_EXT
nkeynes@1210: #endif
nkeynes@1210: 
nkeynes@1210: #if defined(GL_MAX_COLOR_ATTACHMENTS_EXT) && !defined(GL_MAX_COLOR_ATTACHMENTS)
nkeynes@1210: #define GL_MAX_COLOR_ATTACHMENTS GL_MAX_COLOR_ATTACHMENTS_EXT
nkeynes@1210: #endif
nkeynes@1210: 
nkeynes@1210: #if defined(GL_STENCIL_ATTACHMENT_EXT) && !defined(GL_STENCIL_ATTACHMENT)
nkeynes@1210: #define GL_STENCIL_ATTACHMENT GL_STENCIL_ATTACHMENT_EXT
nkeynes@1210: #endif
nkeynes@1210: 
nkeynes@1210: #if defined(GL_DEPTH_ATTACHMENT_EXT) && !defined(GL_DEPTH_ATTACHMENT)
nkeynes@1210: #define GL_DEPTH_ATTACHMENT GL_DEPTH_ATTACHMENT_EXT
nkeynes@1210: #endif
nkeynes@1210: 
nkeynes@1210: #if defined(GL_FRAMEBUFFER_COMPLETE_EXT) && !defined(GL_FRAMEBUFFER_COMPLETE)
nkeynes@1210: #define GL_FRAMEBUFFER_COMPLETE GL_FRAMEBUFFER_COMPLETE_EXT
nkeynes@1210: #endif
nkeynes@1210: 
nkeynes@1210: #if defined(HAVE_OPENGL_FBO_EXT) && !defined(HAVE_OPENGL_FBO)
nkeynes@1210: #define glGenFramebuffers glGenFramebuffersEXT
nkeynes@1210: #define glGenRenderbuffers glGenRenderbuffersEXT
nkeynes@1210: #define glBindFramebuffer glBindFramebufferEXT
nkeynes@1210: #define glDeleteFramebuffers glDeleteFramebuffersEXT
nkeynes@1210: #define glDeleteRenderbuffers glDeleteRenderbuffersEXT
nkeynes@1210: #define glBindFramebuffer glBindFramebufferEXT
nkeynes@1210: #define glBindRenderbuffer glBindRenderbufferEXT
nkeynes@1210: #define glRenderbufferStorage glRenderbufferStorageEXT
nkeynes@1210: #define glFramebufferRenderbuffer glFramebufferRenderbufferEXT
nkeynes@1210: #define glFramebufferTexture2D glFramebufferTexture2DEXT
nkeynes@1210: #define glCheckFramebufferStatus glCheckFramebufferStatusEXT
nkeynes@1210: #endif
nkeynes@1207: 
nkeynes@1207: 
nkeynes@635: /****** Shader handling (gl_sl.c) *****/
nkeynes@635: gboolean glsl_is_supported(void);
nkeynes@1134: const char *glsl_get_version(void);
nkeynes@1130: gboolean glsl_load_shaders( );
nkeynes@635: void glsl_unload_shaders(void);
nkeynes@1130: void glsl_clear_shader();
nkeynes@635: 
nkeynes@1134: /* Convenience formatting function for driver use */
nkeynes@1134: void fprint_extensions( FILE *out, const char *extensions );
nkeynes@1134: 
nkeynes@736: #ifdef __cplusplus
nkeynes@736: }
nkeynes@736: #endif
nkeynes@736: 
nkeynes@635: #endif /* !lxdream_glutil_H */