Added Rend2, an alternate renderer. (Bug #4358)

1 files changed, 682 insertions, 0 deletions

diff --git a/src/rend2/tr_extensions.c b/src/rend2/tr_extensions.c
new file mode 100644
index 00000000..f888cbc8
--- /dev/null
+++ b/src/rend2/tr_extensions.c
@@ -0,0 +1,682 @@
+/*
+===========================================================================
+Copyright (C) 2011 James Canete (use.less01@gmail.com)
+
+This file is part of Quake III Arena source code.
+
+Quake III Arena source code is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Quake III Arena source code is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Quake III Arena source code; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+// tr_extensions.c - extensions needed by the renderer not in sdl_glimp.c
+
+#ifdef USE_LOCAL_HEADERS
+#	include "SDL.h"
+#else
+#	include <SDL.h>
+#endif
+
+#include "tr_local.h"
+
+// GL_EXT_draw_range_elements
+void            (APIENTRY * qglDrawRangeElementsEXT) (GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid *indices);
+
+// GL_EXT_multi_draw_arrays
+void            (APIENTRY * qglMultiDrawArraysEXT) (GLenum mode, GLint *first, GLsizei *count, GLsizei primcount);
+void            (APIENTRY * qglMultiDrawElementsEXT) (GLenum mode, const GLsizei *count, GLenum type, const GLvoid **indices, GLsizei primcount);
+
+// GL_ARB_vertex_shader
+void            (APIENTRY * qglBindAttribLocationARB) (GLhandleARB programObj, GLuint index, const GLcharARB * name);
+void            (APIENTRY * qglGetActiveAttribARB) (GLhandleARB programObj, GLuint index, GLsizei maxLength, GLsizei * length,
+													GLint * size, GLenum * type, GLcharARB * name);
+GLint(APIENTRY * qglGetAttribLocationARB) (GLhandleARB programObj, const GLcharARB * name);
+
+// GL_ARB_vertex_program
+void            (APIENTRY * qglVertexAttrib4fARB) (GLuint, GLfloat, GLfloat, GLfloat, GLfloat);
+void            (APIENTRY * qglVertexAttrib4fvARB) (GLuint, const GLfloat *);
+void            (APIENTRY * qglVertexAttribPointerARB) (GLuint index, GLint size, GLenum type, GLboolean normalized,
+														GLsizei stride, const GLvoid * pointer);
+void            (APIENTRY * qglEnableVertexAttribArrayARB) (GLuint index);
+void            (APIENTRY * qglDisableVertexAttribArrayARB) (GLuint index);
+
+// GL_ARB_vertex_buffer_object
+void (APIENTRY * qglBindBufferARB) (GLenum target, GLuint buffer);
+void (APIENTRY * qglDeleteBuffersARB) (GLsizei n, const GLuint * buffers);
+void (APIENTRY * qglGenBuffersARB) (GLsizei n, GLuint * buffers);
+
+GLboolean(APIENTRY * qglIsBufferARB) (GLuint buffer);
+void (APIENTRY * qglBufferDataARB) (GLenum target, GLsizeiptrARB size, const GLvoid * data, GLenum usage);
+void (APIENTRY * qglBufferSubDataARB) (GLenum target, GLintptrARB offset, GLsizeiptrARB size, const GLvoid * data);
+void (APIENTRY * qglGetBufferSubDataARB) (GLenum target, GLintptrARB offset, GLsizeiptrARB size, GLvoid * data);
+
+void (APIENTRY * qglGetBufferParameterivARB) (GLenum target, GLenum pname, GLint * params);
+void (APIENTRY * qglGetBufferPointervARB) (GLenum target, GLenum pname, GLvoid * *params);
+
+// GL_ARB_shader_objects
+void            (APIENTRY * qglDeleteObjectARB) (GLhandleARB obj);
+
+GLhandleARB(APIENTRY * qglGetHandleARB) (GLenum pname);
+void            (APIENTRY * qglDetachObjectARB) (GLhandleARB containerObj, GLhandleARB attachedObj);
+
+GLhandleARB(APIENTRY * qglCreateShaderObjectARB) (GLenum shaderType);
+void            (APIENTRY * qglShaderSourceARB) (GLhandleARB shaderObj, GLsizei count, const GLcharARB * *string,
+												 const GLint * length);
+void            (APIENTRY * qglCompileShaderARB) (GLhandleARB shaderObj);
+
+GLhandleARB(APIENTRY * qglCreateProgramObjectARB) (void);
+void            (APIENTRY * qglAttachObjectARB) (GLhandleARB containerObj, GLhandleARB obj);
+void            (APIENTRY * qglLinkProgramARB) (GLhandleARB programObj);
+void            (APIENTRY * qglUseProgramObjectARB) (GLhandleARB programObj);
+void            (APIENTRY * qglValidateProgramARB) (GLhandleARB programObj);
+void            (APIENTRY * qglUniform1fARB) (GLint location, GLfloat v0);
+void            (APIENTRY * qglUniform2fARB) (GLint location, GLfloat v0, GLfloat v1);
+void            (APIENTRY * qglUniform3fARB) (GLint location, GLfloat v0, GLfloat v1, GLfloat v2);
+void            (APIENTRY * qglUniform4fARB) (GLint location, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3);
+void            (APIENTRY * qglUniform1iARB) (GLint location, GLint v0);
+void            (APIENTRY * qglUniform2iARB) (GLint location, GLint v0, GLint v1);
+void            (APIENTRY * qglUniform3iARB) (GLint location, GLint v0, GLint v1, GLint v2);
+void            (APIENTRY * qglUniform4iARB) (GLint location, GLint v0, GLint v1, GLint v2, GLint v3);
+void            (APIENTRY * qglUniform1fvARB) (GLint location, GLsizei count, const GLfloat * value);
+void            (APIENTRY * qglUniform2fvARB) (GLint location, GLsizei count, const GLfloat * value);
+void            (APIENTRY * qglUniform3fvARB) (GLint location, GLsizei count, const GLfloat * value);
+void            (APIENTRY * qglUniform4fvARB) (GLint location, GLsizei count, const GLfloat * value);
+void            (APIENTRY * qglUniform2ivARB) (GLint location, GLsizei count, const GLint * value);
+void            (APIENTRY * qglUniform3ivARB) (GLint location, GLsizei count, const GLint * value);
+void            (APIENTRY * qglUniform4ivARB) (GLint location, GLsizei count, const GLint * value);
+void            (APIENTRY * qglUniformMatrix2fvARB) (GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
+void            (APIENTRY * qglUniformMatrix3fvARB) (GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
+void            (APIENTRY * qglUniformMatrix4fvARB) (GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
+void            (APIENTRY * qglGetObjectParameterfvARB) (GLhandleARB obj, GLenum pname, GLfloat * params);
+void            (APIENTRY * qglGetObjectParameterivARB) (GLhandleARB obj, GLenum pname, GLint * params);
+void            (APIENTRY * qglGetInfoLogARB) (GLhandleARB obj, GLsizei maxLength, GLsizei * length, GLcharARB * infoLog);
+void            (APIENTRY * qglGetAttachedObjectsARB) (GLhandleARB containerObj, GLsizei maxCount, GLsizei * count,
+													   GLhandleARB * obj);
+GLint(APIENTRY * qglGetUniformLocationARB) (GLhandleARB programObj, const GLcharARB * name);
+void            (APIENTRY * qglGetActiveUniformARB) (GLhandleARB programObj, GLuint index, GLsizei maxIndex, GLsizei * length,
+													 GLint * size, GLenum * type, GLcharARB * name);
+void            (APIENTRY * qglGetUniformfvARB) (GLhandleARB programObj, GLint location, GLfloat * params);
+void            (APIENTRY * qglGetUniformivARB) (GLhandleARB programObj, GLint location, GLint * params);
+void            (APIENTRY * qglGetShaderSourceARB) (GLhandleARB obj, GLsizei maxLength, GLsizei * length, GLcharARB * source);
+
+// GL_ARB_texture_compression
+void (APIENTRY * qglCompressedTexImage3DARB)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, 
+	GLsizei depth, GLint border, GLsizei imageSize, const GLvoid *data);
+void (APIENTRY * qglCompressedTexImage2DARB)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height,
+	GLint border, GLsizei imageSize, const GLvoid *data);
+void (APIENTRY * qglCompressedTexImage1DARB)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLint border,
+	GLsizei imageSize, const GLvoid *data);
+void (APIENTRY * qglCompressedTexSubImage3DARB)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset,
+	GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const GLvoid *data);
+void (APIENTRY * qglCompressedTexSubImage2DARB)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width,
+	GLsizei height, GLenum format, GLsizei imageSize, const GLvoid *data);
+void (APIENTRY * qglCompressedTexSubImage1DARB)(GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, 
+	GLsizei imageSize, const GLvoid *data);
+void (APIENTRY * qglGetCompressedTexImageARB)(GLenum target, GLint lod,
+	GLvoid *img);
+
+// GL_EXT_framebuffer_object
+GLboolean (APIENTRY * qglIsRenderbufferEXT)(GLuint renderbuffer);
+void (APIENTRY * qglBindRenderbufferEXT)(GLenum target, GLuint renderbuffer);
+void (APIENTRY * qglDeleteRenderbuffersEXT)(GLsizei n, const GLuint *renderbuffers);
+void (APIENTRY * qglGenRenderbuffersEXT)(GLsizei n, GLuint *renderbuffers);
+
+void (APIENTRY * qglRenderbufferStorageEXT)(GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
+
+void (APIENTRY * qglGetRenderbufferParameterivEXT)(GLenum target, GLenum pname, GLint *params);
+
+GLboolean (APIENTRY * qglIsFramebufferEXT)(GLuint framebuffer);
+void (APIENTRY * qglBindFramebufferEXT)(GLenum target, GLuint framebuffer);
+void (APIENTRY * qglDeleteFramebuffersEXT)(GLsizei n, const GLuint *framebuffers);
+void (APIENTRY * qglGenFramebuffersEXT)(GLsizei n, GLuint *framebuffers);
+
+GLenum (APIENTRY * qglCheckFramebufferStatusEXT)(GLenum target);
+
+void (APIENTRY * qglFramebufferTexture1DEXT)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture,
+	GLint level);
+void (APIENTRY * qglFramebufferTexture2DEXT)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture,
+	GLint level);
+void (APIENTRY * qglFramebufferTexture3DEXT)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture,
+	GLint level, GLint zoffset);
+
+void (APIENTRY * qglFramebufferRenderbufferEXT)(GLenum target, GLenum attachment, GLenum renderbuffertarget,
+	GLuint renderbuffer);
+
+void (APIENTRY * qglGetFramebufferAttachmentParameterivEXT)(GLenum target, GLenum attachment, GLenum pname, GLint *params);
+
+void (APIENTRY * qglGenerateMipmapEXT)(GLenum target);
+
+// GL_ARB_occlusion_query
+void (APIENTRY * qglGenQueriesARB)(GLsizei n, GLuint *ids);
+void (APIENTRY * qglDeleteQueriesARB)(GLsizei n, const GLuint *ids);
+GLboolean (APIENTRY * qglIsQueryARB)(GLuint id);
+void (APIENTRY * qglBeginQueryARB)(GLenum target, GLuint id);
+void (APIENTRY * qglEndQueryARB)(GLenum target);
+void (APIENTRY * qglGetQueryivARB)(GLenum target, GLenum pname, GLint *params);
+void (APIENTRY * qglGetQueryObjectivARB)(GLuint id, GLenum pname, GLint *params);
+void (APIENTRY * qglGetQueryObjectuivARB)(GLuint id, GLenum pname, GLuint *params);
+
+// GL_EXT_framebuffer_blit
+void (APIENTRY * qglBlitFramebufferEXT)(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+                            GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+                            GLbitfield mask, GLenum filter);
+
+// GL_EXT_framebuffer_multisample
+void (APIENTRY * qglRenderbufferStorageMultisampleEXT)(GLenum target, GLsizei samples,
+	GLenum internalformat, GLsizei width, GLsizei height);
+
+// GL_ARB_draw_buffers
+void (APIENTRY * qglDrawBuffersARB)(GLsizei n, const GLenum *bufs);
+
+static qboolean GLimp_HaveExtension(const char *ext)
+{
+	const char *ptr = Q_stristr( glConfig.extensions_string, ext );
+	if (ptr == NULL)
+		return qfalse;
+	ptr += strlen(ext);
+	return ((*ptr == ' ') || (*ptr == '\0'));  // verify it's complete string.
+}
+
+void GLimp_InitExtraExtensions()
+{
+	char *extension;
+	const char* result[3] = { "...ignoring %s\n", "...using %s\n", "...%s not found\n" };
+
+	// GL_EXT_draw_range_elements
+	extension = "GL_EXT_draw_range_elements";
+	glRefConfig.drawRangeElements = qfalse;
+	qglMultiDrawArraysEXT = NULL;
+	qglMultiDrawElementsEXT = NULL;
+	if( GLimp_HaveExtension( extension ) )
+	{
+		qglDrawRangeElementsEXT = (void *) SDL_GL_GetProcAddress("glDrawRangeElementsEXT");
+
+		if ( r_ext_draw_range_elements->integer)
+			glRefConfig.drawRangeElements = qtrue;
+
+		ri.Printf(PRINT_ALL, result[glRefConfig.drawRangeElements], extension);
+	}
+	else
+	{
+		ri.Printf(PRINT_ALL, result[2], extension);
+	}
+
+	// GL_EXT_multi_draw_arrays
+	extension = "GL_EXT_multi_draw_arrays";
+	glRefConfig.multiDrawArrays = qfalse;
+	qglMultiDrawArraysEXT = NULL;
+	qglMultiDrawElementsEXT = NULL;
+	if( GLimp_HaveExtension( extension ) )
+	{
+		qglMultiDrawArraysEXT = (PFNGLMULTIDRAWARRAYSEXTPROC) SDL_GL_GetProcAddress("glMultiDrawArraysEXT");
+		qglMultiDrawElementsEXT = (PFNGLMULTIDRAWELEMENTSEXTPROC) SDL_GL_GetProcAddress("glMultiDrawElementsEXT");
+
+		if ( r_ext_multi_draw_arrays->integer )
+			glRefConfig.multiDrawArrays = qtrue;
+
+		ri.Printf(PRINT_ALL, result[glRefConfig.multiDrawArrays], extension);
+	}
+	else
+	{
+		ri.Printf(PRINT_ALL, result[2], extension);
+	}
+
+	// GL_ARB_vertex_program
+	//glRefConfig.vertexProgram = qfalse;
+	extension = "GL_ARB_vertex_program";
+	qglVertexAttrib4fARB = NULL;
+	qglVertexAttrib4fvARB = NULL;
+	qglVertexAttribPointerARB = NULL;
+	qglEnableVertexAttribArrayARB = NULL;
+	qglDisableVertexAttribArrayARB = NULL;
+	if( GLimp_HaveExtension( extension ) )
+	{
+		qglVertexAttrib4fARB = (PFNGLVERTEXATTRIB4FARBPROC) SDL_GL_GetProcAddress("glVertexAttrib4fARB");
+		qglVertexAttrib4fvARB = (PFNGLVERTEXATTRIB4FVARBPROC) SDL_GL_GetProcAddress("glVertexAttrib4fvARB");
+		qglVertexAttribPointerARB = (PFNGLVERTEXATTRIBPOINTERARBPROC) SDL_GL_GetProcAddress("glVertexAttribPointerARB");
+		qglEnableVertexAttribArrayARB =
+			(PFNGLENABLEVERTEXATTRIBARRAYARBPROC) SDL_GL_GetProcAddress("glEnableVertexAttribArrayARB");
+		qglDisableVertexAttribArrayARB =
+			(PFNGLDISABLEVERTEXATTRIBARRAYARBPROC) SDL_GL_GetProcAddress("glDisableVertexAttribArrayARB");
+
+		ri.Printf(PRINT_ALL, result[1], extension);
+		//glRefConfig.vertexProgram = qtrue;
+	}
+	else
+	{
+		ri.Error(ERR_FATAL, result[2], extension);
+	}
+	
+	// GL_ARB_vertex_buffer_object
+	//glRefConfig.vertexBufferObject = qfalse;
+	extension = "GL_ARB_vertex_buffer_object";
+	qglBindBufferARB = NULL;
+	qglDeleteBuffersARB = NULL;
+	qglGenBuffersARB = NULL;
+	qglIsBufferARB = NULL;
+	qglBufferDataARB = NULL;
+	qglBufferSubDataARB = NULL;
+	qglGetBufferSubDataARB = NULL;
+	qglGetBufferParameterivARB = NULL;
+	qglGetBufferPointervARB = NULL;
+	if( GLimp_HaveExtension( extension ) )
+	{
+		qglBindBufferARB = (PFNGLBINDBUFFERARBPROC) SDL_GL_GetProcAddress("glBindBufferARB");
+		qglDeleteBuffersARB = (PFNGLDELETEBUFFERSARBPROC) SDL_GL_GetProcAddress("glDeleteBuffersARB");
+		qglGenBuffersARB = (PFNGLGENBUFFERSARBPROC) SDL_GL_GetProcAddress("glGenBuffersARB");
+		qglIsBufferARB = (PFNGLISBUFFERARBPROC) SDL_GL_GetProcAddress("glIsBufferARB");
+		qglBufferDataARB = (PFNGLBUFFERDATAARBPROC) SDL_GL_GetProcAddress("glBufferDataARB");
+		qglBufferSubDataARB = (PFNGLBUFFERSUBDATAARBPROC) SDL_GL_GetProcAddress("glBufferSubDataARB");
+		qglGetBufferSubDataARB = (PFNGLGETBUFFERSUBDATAARBPROC) SDL_GL_GetProcAddress("glGetBufferSubDataARB");
+		qglGetBufferParameterivARB = (PFNGLGETBUFFERPARAMETERIVARBPROC) SDL_GL_GetProcAddress("glGetBufferParameterivARB");
+		qglGetBufferPointervARB = (PFNGLGETBUFFERPOINTERVARBPROC) SDL_GL_GetProcAddress("glGetBufferPointervARB");
+		ri.Printf(PRINT_ALL, result[1], extension);
+		//glRefConfig.vertexBufferObject = qtrue;
+	}
+	else
+	{
+		ri.Error(ERR_FATAL, result[2], extension);
+	}
+
+	// GL_ARB_shader_objects
+	extension = "GL_ARB_shader_objects";
+	//glRefConfig.shaderObjects = qfalse;
+	qglDeleteObjectARB = NULL;
+	qglGetHandleARB = NULL;
+	qglDetachObjectARB = NULL;
+	qglCreateShaderObjectARB = NULL;
+	qglShaderSourceARB = NULL;
+	qglCompileShaderARB = NULL;
+	qglCreateProgramObjectARB = NULL;
+	qglAttachObjectARB = NULL;
+	qglLinkProgramARB = NULL;
+	qglUseProgramObjectARB = NULL;
+	qglValidateProgramARB = NULL;
+	qglUniform1fARB = NULL;
+	qglUniform2fARB = NULL;
+	qglUniform3fARB = NULL;
+	qglUniform4fARB = NULL;
+	qglUniform1iARB = NULL;
+	qglUniform2iARB = NULL;
+	qglUniform3iARB = NULL;
+	qglUniform4iARB = NULL;
+	qglUniform1fvARB = NULL;
+	qglUniform2fvARB = NULL;
+	qglUniform3fvARB = NULL;
+	qglUniform4fvARB = NULL;
+	qglUniform2ivARB = NULL;
+	qglUniform3ivARB = NULL;
+	qglUniform4ivARB = NULL;
+	qglUniformMatrix2fvARB = NULL;
+	qglUniformMatrix3fvARB = NULL;
+	qglUniformMatrix4fvARB = NULL;
+	qglGetObjectParameterfvARB = NULL;
+	qglGetObjectParameterivARB = NULL;
+	qglGetInfoLogARB = NULL;
+	qglGetAttachedObjectsARB = NULL;
+	qglGetUniformLocationARB = NULL;
+	qglGetActiveUniformARB = NULL;
+	qglGetUniformfvARB = NULL;
+	qglGetUniformivARB = NULL;
+	qglGetShaderSourceARB = NULL;
+	if( GLimp_HaveExtension( extension ) )
+	{
+		qglDeleteObjectARB = (PFNGLDELETEOBJECTARBPROC) SDL_GL_GetProcAddress("glDeleteObjectARB");
+		qglGetHandleARB = (PFNGLGETHANDLEARBPROC) SDL_GL_GetProcAddress("glGetHandleARB");
+		qglDetachObjectARB = (PFNGLDETACHOBJECTARBPROC) SDL_GL_GetProcAddress("glDetachObjectARB");
+		qglCreateShaderObjectARB = (PFNGLCREATESHADEROBJECTARBPROC) SDL_GL_GetProcAddress("glCreateShaderObjectARB");
+		qglShaderSourceARB = (PFNGLSHADERSOURCEARBPROC) SDL_GL_GetProcAddress("glShaderSourceARB");
+		qglCompileShaderARB = (PFNGLCOMPILESHADERARBPROC) SDL_GL_GetProcAddress("glCompileShaderARB");
+		qglCreateProgramObjectARB = (PFNGLCREATEPROGRAMOBJECTARBPROC) SDL_GL_GetProcAddress("glCreateProgramObjectARB");
+		qglAttachObjectARB = (PFNGLATTACHOBJECTARBPROC) SDL_GL_GetProcAddress("glAttachObjectARB");
+		qglLinkProgramARB = (PFNGLLINKPROGRAMARBPROC) SDL_GL_GetProcAddress("glLinkProgramARB");
+		qglUseProgramObjectARB = (PFNGLUSEPROGRAMOBJECTARBPROC) SDL_GL_GetProcAddress("glUseProgramObjectARB");
+		qglValidateProgramARB = (PFNGLVALIDATEPROGRAMARBPROC) SDL_GL_GetProcAddress("glValidateProgramARB");
+		qglUniform1fARB = (PFNGLUNIFORM1FARBPROC) SDL_GL_GetProcAddress("glUniform1fARB");
+		qglUniform2fARB = (PFNGLUNIFORM2FARBPROC) SDL_GL_GetProcAddress("glUniform2fARB");
+		qglUniform3fARB = (PFNGLUNIFORM3FARBPROC) SDL_GL_GetProcAddress("glUniform3fARB");
+		qglUniform4fARB = (PFNGLUNIFORM4FARBPROC) SDL_GL_GetProcAddress("glUniform4fARB");
+		qglUniform1iARB = (PFNGLUNIFORM1IARBPROC) SDL_GL_GetProcAddress("glUniform1iARB");
+		qglUniform2iARB = (PFNGLUNIFORM2IARBPROC) SDL_GL_GetProcAddress("glUniform2iARB");
+		qglUniform3iARB = (PFNGLUNIFORM3IARBPROC) SDL_GL_GetProcAddress("glUniform3iARB");
+		qglUniform4iARB = (PFNGLUNIFORM4IARBPROC) SDL_GL_GetProcAddress("glUniform4iARB");
+		qglUniform1fvARB = (PFNGLUNIFORM1FVARBPROC) SDL_GL_GetProcAddress("glUniform1fvARB");
+		qglUniform2fvARB = (PFNGLUNIFORM2FVARBPROC) SDL_GL_GetProcAddress("glUniform2fvARB");
+		qglUniform3fvARB = (PFNGLUNIFORM3FVARBPROC) SDL_GL_GetProcAddress("glUniform3fvARB");
+		qglUniform4fvARB = (PFNGLUNIFORM4FVARBPROC) SDL_GL_GetProcAddress("glUniform4fvARB");
+		qglUniform2ivARB = (PFNGLUNIFORM2IVARBPROC) SDL_GL_GetProcAddress("glUniform2ivARB");
+		qglUniform3ivARB = (PFNGLUNIFORM3IVARBPROC) SDL_GL_GetProcAddress("glUniform3ivARB");
+		qglUniform4ivARB = (PFNGLUNIFORM4IVARBPROC) SDL_GL_GetProcAddress("glUniform4ivARB");
+		qglUniformMatrix2fvARB = (PFNGLUNIFORMMATRIX2FVARBPROC) SDL_GL_GetProcAddress("glUniformMatrix2fvARB");
+		qglUniformMatrix3fvARB = (PFNGLUNIFORMMATRIX3FVARBPROC) SDL_GL_GetProcAddress("glUniformMatrix3fvARB");
+		qglUniformMatrix4fvARB = (PFNGLUNIFORMMATRIX4FVARBPROC) SDL_GL_GetProcAddress("glUniformMatrix4fvARB");
+		qglGetObjectParameterfvARB = (PFNGLGETOBJECTPARAMETERFVARBPROC) SDL_GL_GetProcAddress("glGetObjectParameterfvARB");
+		qglGetObjectParameterivARB = (PFNGLGETOBJECTPARAMETERIVARBPROC) SDL_GL_GetProcAddress("glGetObjectParameterivARB");
+		qglGetInfoLogARB = (PFNGLGETINFOLOGARBPROC) SDL_GL_GetProcAddress("glGetInfoLogARB");
+		qglGetAttachedObjectsARB = (PFNGLGETATTACHEDOBJECTSARBPROC) SDL_GL_GetProcAddress("glGetAttachedObjectsARB");
+		qglGetUniformLocationARB = (PFNGLGETUNIFORMLOCATIONARBPROC) SDL_GL_GetProcAddress("glGetUniformLocationARB");
+		qglGetActiveUniformARB = (PFNGLGETACTIVEUNIFORMARBPROC) SDL_GL_GetProcAddress("glGetActiveUniformARB");
+		qglGetUniformfvARB = (PFNGLGETUNIFORMFVARBPROC) SDL_GL_GetProcAddress("glGetUniformfvARB");
+		qglGetUniformivARB = (PFNGLGETUNIFORMIVARBPROC) SDL_GL_GetProcAddress("glGetUniformivARB");
+		qglGetShaderSourceARB = (PFNGLGETSHADERSOURCEARBPROC) SDL_GL_GetProcAddress("glGetShaderSourceARB");
+		ri.Printf(PRINT_ALL, result[1], extension);
+		//glRefConfig.shaderObjects = qtrue;
+	}
+	else
+	{
+		ri.Error(ERR_FATAL, result[2], extension);
+	}
+
+	// GL_ARB_vertex_shader
+	//glRefConfig.vertexShader = qfalse;
+	extension = "GL_ARB_vertex_shader";
+	qglBindAttribLocationARB = NULL;
+	qglGetActiveAttribARB = NULL;
+	qglGetAttribLocationARB = NULL;
+	if( GLimp_HaveExtension( extension ) )
+	{
+		//int				reservedComponents;
+
+		//qglGetIntegerv(GL_MAX_VERTEX_UNIFORM_COMPONENTS_ARB, &glConfig.maxVertexUniforms);
+		//qglGetIntegerv(GL_MAX_VARYING_FLOATS_ARB, &glConfig.maxVaryingFloats);
+		//qglGetIntegerv(GL_MAX_VERTEX_ATTRIBS_ARB, &glConfig.maxVertexAttribs);
+
+		//reservedComponents = 16 * 10; // approximation how many uniforms we have besides the bone matrices
+
+#if 0
+		if(glConfig.driverType == GLDRV_MESA)
+		{
+			// HACK
+			// restrict to number of vertex uniforms to 512 because of:
+			// xreal.x86_64: nv50_program.c:4181: nv50_program_validate_data: Assertion `p->param_nr <= 512' failed
+
+			glConfig.maxVertexUniforms = Q_bound(0, glConfig.maxVertexUniforms, 512);
+		}
+#endif
+
+		//glConfig.maxVertexSkinningBones = (int) Q_bound(0.0, (Q_max(glConfig.maxVertexUniforms - reservedComponents, 0) / 16), MAX_BONES);
+		//glConfig.vboVertexSkinningAvailable = r_vboVertexSkinning->integer && ((glConfig.maxVertexSkinningBones >= 12) ? qtrue : qfalse);
+
+		qglBindAttribLocationARB = (PFNGLBINDATTRIBLOCATIONARBPROC) SDL_GL_GetProcAddress("glBindAttribLocationARB");
+		qglGetActiveAttribARB = (PFNGLGETACTIVEATTRIBARBPROC) SDL_GL_GetProcAddress("glGetActiveAttribARB");
+		qglGetAttribLocationARB = (PFNGLGETATTRIBLOCATIONARBPROC) SDL_GL_GetProcAddress("glGetAttribLocationARB");
+		ri.Printf(PRINT_ALL, result[1], extension);
+		//glRefConfig.vertexShader = qtrue;
+	}
+	else
+	{
+		ri.Error(ERR_FATAL, result[2], extension);
+	}
+
+	// GL_ARB_shading_language_100
+	extension = "GL_ARB_shading_language_100";
+	glRefConfig.textureFloat = qfalse;
+	if( GLimp_HaveExtension( extension ) )
+	{
+		char version[256];
+
+		Q_strncpyz( version, (char *) qglGetString (GL_SHADING_LANGUAGE_VERSION_ARB), sizeof( version ) );
+
+		sscanf(version, "%d.%d", &glRefConfig.glslMajorVersion, &glRefConfig.glslMinorVersion);
+
+		ri.Printf(PRINT_ALL, "...using GLSL version %s\n", version);
+	}
+	else
+	{
+		ri.Error(ERR_FATAL, result[2], extension);
+	}
+
+	glRefConfig.memInfo = MI_NONE;
+
+	if( GLimp_HaveExtension( "GL_NVX_gpu_memory_info" ) )
+	{
+		glRefConfig.memInfo = MI_NVX;
+	}
+	else if( GLimp_HaveExtension( "GL_ATI_meminfo" ) )
+	{
+		glRefConfig.memInfo = MI_ATI;
+	}
+
+	extension = "GL_ARB_texture_non_power_of_two";
+	glRefConfig.textureNonPowerOfTwo = qfalse;
+	if( GLimp_HaveExtension( extension ) )
+	{
+		if(1) //(r_ext_texture_non_power_of_two->integer)
+		{
+			glRefConfig.textureNonPowerOfTwo = qtrue;
+		}
+
+		ri.Printf(PRINT_ALL, result[glRefConfig.textureNonPowerOfTwo], extension);
+	}
+	else
+	{
+		ri.Printf(PRINT_ALL, result[2], extension);
+	}
+
+	// GL_ARB_texture_float
+	extension = "GL_ARB_texture_float";
+	glRefConfig.textureFloat = qfalse;
+	if( GLimp_HaveExtension( extension ) )
+	{
+		if( r_ext_texture_float->integer )
+		{
+			glRefConfig.textureFloat = qtrue;
+		}
+
+		ri.Printf(PRINT_ALL, result[glRefConfig.textureFloat], extension);
+	}
+	else
+	{
+		ri.Printf(PRINT_ALL, result[2], extension);
+	}
+
+	// GL_ARB_half_float_pixel
+	extension = "GL_ARB_half_float_pixel";
+	glRefConfig.halfFloatPixel = qfalse;
+	if( GLimp_HaveExtension( extension ) )
+	{
+		if( r_arb_half_float_pixel->integer )
+			glRefConfig.halfFloatPixel = qtrue;
+
+		ri.Printf(PRINT_ALL, result[glRefConfig.halfFloatPixel], extension);
+	}
+	else
+	{
+		ri.Printf(PRINT_ALL, result[2], extension);
+	}
+
+	// GL_EXT_framebuffer_object
+	extension = "GL_EXT_framebuffer_object";
+	glRefConfig.framebufferObject = qfalse;
+	if( GLimp_HaveExtension( extension ) )
+	{
+		glGetIntegerv(GL_MAX_RENDERBUFFER_SIZE_EXT, &glRefConfig.maxRenderbufferSize);
+		glGetIntegerv(GL_MAX_COLOR_ATTACHMENTS_EXT, &glRefConfig.maxColorAttachments);
+
+		qglIsRenderbufferEXT = (PFNGLISRENDERBUFFEREXTPROC) SDL_GL_GetProcAddress("glIsRenderbufferEXT");
+		qglBindRenderbufferEXT = (PFNGLBINDRENDERBUFFEREXTPROC) SDL_GL_GetProcAddress("glBindRenderbufferEXT");
+		qglDeleteRenderbuffersEXT = (PFNGLDELETERENDERBUFFERSEXTPROC) SDL_GL_GetProcAddress("glDeleteRenderbuffersEXT");
+		qglGenRenderbuffersEXT = (PFNGLGENRENDERBUFFERSEXTPROC) SDL_GL_GetProcAddress("glGenRenderbuffersEXT");
+		qglRenderbufferStorageEXT = (PFNGLRENDERBUFFERSTORAGEEXTPROC) SDL_GL_GetProcAddress("glRenderbufferStorageEXT");
+		qglGetRenderbufferParameterivEXT = (PFNGLGETRENDERBUFFERPARAMETERIVEXTPROC) SDL_GL_GetProcAddress("glGetRenderbufferParameterivEXT");
+		qglIsFramebufferEXT = (PFNGLISFRAMEBUFFEREXTPROC) SDL_GL_GetProcAddress("glIsFramebufferEXT");
+		qglBindFramebufferEXT = (PFNGLBINDFRAMEBUFFEREXTPROC) SDL_GL_GetProcAddress("glBindFramebufferEXT");
+		qglDeleteFramebuffersEXT = (PFNGLDELETEFRAMEBUFFERSEXTPROC) SDL_GL_GetProcAddress("glDeleteFramebuffersEXT");
+		qglGenFramebuffersEXT = (PFNGLGENFRAMEBUFFERSEXTPROC) SDL_GL_GetProcAddress("glGenFramebuffersEXT");
+		qglCheckFramebufferStatusEXT = (PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC) SDL_GL_GetProcAddress("glCheckFramebufferStatusEXT");
+		qglFramebufferTexture1DEXT = (PFNGLFRAMEBUFFERTEXTURE1DEXTPROC) SDL_GL_GetProcAddress("glFramebufferTexture1DEXT");
+		qglFramebufferTexture2DEXT = (PFNGLFRAMEBUFFERTEXTURE2DEXTPROC) SDL_GL_GetProcAddress("glFramebufferTexture2DEXT");
+		qglFramebufferTexture3DEXT = (PFNGLFRAMEBUFFERTEXTURE3DEXTPROC) SDL_GL_GetProcAddress("glFramebufferTexture3DEXT");
+		qglFramebufferRenderbufferEXT = (PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC) SDL_GL_GetProcAddress("glFramebufferRenderbufferEXT");
+		qglGetFramebufferAttachmentParameterivEXT = (PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVEXTPROC) SDL_GL_GetProcAddress("glGetFramebufferAttachmentParameterivEXT");
+		qglGenerateMipmapEXT = (PFNGLGENERATEMIPMAPEXTPROC) SDL_GL_GetProcAddress("glGenerateMipmapEXT");
+
+		if(r_ext_framebuffer_object->value)
+			glRefConfig.framebufferObject = qtrue;
+
+		ri.Printf(PRINT_ALL, result[glRefConfig.framebufferObject], extension);
+	}
+	else
+	{
+		ri.Printf(PRINT_ALL, result[2], extension);
+	}
+
+	// GL_EXT_packed_depth_stencil
+	extension = "GL_EXT_packed_depth_stencil";
+	glRefConfig.packedDepthStencil = qfalse;
+	if( GLimp_HaveExtension(extension))
+	{
+		glRefConfig.packedDepthStencil = qtrue;
+		ri.Printf(PRINT_ALL, result[glRefConfig.packedDepthStencil], extension);
+	}
+	else
+	{
+		ri.Printf(PRINT_ALL, result[2], extension);
+	}
+
+	// GL_ARB_occlusion_query
+	extension = "GL_ARB_occlusion_query";
+	glRefConfig.occlusionQuery = qfalse;
+	if (GLimp_HaveExtension(extension))
+	{
+		qglGenQueriesARB = (PFNGLGENQUERIESARBPROC) SDL_GL_GetProcAddress("glGenQueriesARB");
+		qglDeleteQueriesARB = (PFNGLDELETEQUERIESARBPROC) SDL_GL_GetProcAddress("glDeleteQueriesARB");
+		qglIsQueryARB = (PFNGLISQUERYARBPROC) SDL_GL_GetProcAddress("glIsQueryARB");
+		qglBeginQueryARB = (PFNGLBEGINQUERYARBPROC) SDL_GL_GetProcAddress("glBeginQueryARB");
+		qglEndQueryARB = (PFNGLENDQUERYARBPROC) SDL_GL_GetProcAddress("glEndQueryARB");
+		qglGetQueryivARB = (PFNGLGETQUERYIVARBPROC) SDL_GL_GetProcAddress("glGetQueryivARB");
+		qglGetQueryObjectivARB = (PFNGLGETQUERYOBJECTIVARBPROC) SDL_GL_GetProcAddress("glGetQueryObjectivARB");
+		qglGetQueryObjectuivARB = (PFNGLGETQUERYOBJECTUIVARBPROC) SDL_GL_GetProcAddress("glGetQueryObjectuivARB");
+		glRefConfig.occlusionQuery = qtrue;
+		ri.Printf(PRINT_ALL, result[glRefConfig.occlusionQuery], extension);
+	}
+	else
+	{
+		ri.Printf(PRINT_ALL, result[2], extension);
+	}
+
+	// GL_EXT_framebuffer_blit
+	extension = "GL_EXT_framebuffer_blit";
+	glRefConfig.framebufferBlit = qfalse;
+	if (GLimp_HaveExtension(extension))
+	{
+		qglBlitFramebufferEXT = (void *)SDL_GL_GetProcAddress("glBlitFramebufferEXT");
+		glRefConfig.framebufferBlit = qtrue;
+		ri.Printf(PRINT_ALL, result[glRefConfig.framebufferBlit], extension);
+	}
+	else
+	{
+		ri.Printf(PRINT_ALL, result[2], extension);
+	}
+
+	// GL_EXT_framebuffer_multisample
+	extension = "GL_EXT_framebuffer_multisample";
+	glRefConfig.framebufferMultisample = qfalse;
+	if (GLimp_HaveExtension(extension))
+	{
+		qglRenderbufferStorageMultisampleEXT = (void *)SDL_GL_GetProcAddress("glRenderbufferStorageMultisampleEXT");
+		glRefConfig.framebufferMultisample = qtrue;
+		ri.Printf(PRINT_ALL, result[glRefConfig.framebufferMultisample], extension);
+	}
+	else
+	{
+		ri.Printf(PRINT_ALL, result[2], extension);
+	}
+
+	// GL_EXT_texture_sRGB
+	extension = "GL_EXT_texture_sRGB";
+	glRefConfig.texture_srgb = qfalse;
+	if (GLimp_HaveExtension(extension))
+	{
+		if (r_srgb->integer)
+			glRefConfig.texture_srgb = qtrue;
+
+		ri.Printf(PRINT_ALL, result[glRefConfig.texture_srgb], extension);
+	}
+	else
+	{
+		ri.Printf(PRINT_ALL, result[2], extension);
+	}
+
+	// GL_EXT_framebuffer_sRGB
+	extension = "GL_EXT_framebuffer_sRGB";
+	glRefConfig.framebuffer_srgb = qfalse;
+	if (GLimp_HaveExtension(extension))
+	{
+		if (r_srgb->integer)
+			glRefConfig.framebuffer_srgb = qtrue;
+
+		ri.Printf(PRINT_ALL, result[glRefConfig.framebuffer_srgb], extension);
+	}
+	else
+	{
+		ri.Printf(PRINT_ALL, result[2], extension);
+	}
+
+	glRefConfig.textureCompression = TCR_NONE;
+
+	// GL_EXT_texture_compression_latc
+	extension = "GL_EXT_texture_compression_latc";
+	if (GLimp_HaveExtension(extension))
+	{
+		if (r_ext_compressed_textures->integer)
+			glRefConfig.textureCompression |= TCR_LATC;
+
+		ri.Printf(PRINT_ALL, result[r_ext_compressed_textures->integer ? 1 : 0], extension);
+	}
+	else
+	{
+		ri.Printf(PRINT_ALL, result[2], extension);
+	}
+
+	// GL_ARB_texture_compression_bptc
+	extension = "GL_ARB_texture_compression_bptc";
+	if (GLimp_HaveExtension(extension))
+	{
+		if (r_ext_compressed_textures->integer >= 2)
+			glRefConfig.textureCompression |= TCR_BPTC;
+
+		ri.Printf(PRINT_ALL, result[(r_ext_compressed_textures->integer >= 2) ? 1 : 0], extension);
+	}
+	else
+	{
+		ri.Printf(PRINT_ALL, result[2], extension);
+	}
+
+	// GL_ARB_draw_buffers
+	extension = "GL_ARB_draw_buffers";
+	qglDrawBuffersARB = NULL;
+	if( GLimp_HaveExtension( extension ) )
+	{
+		qglDrawBuffersARB = (void *) SDL_GL_GetProcAddress("glDrawBuffersARB");
+
+		ri.Printf(PRINT_ALL, result[1], extension);
+	}
+	else
+	{
+		ri.Printf(PRINT_ALL, result[2], extension);
+	}
+
+	// GL_ARB_depth_clamp
+	extension = "GL_ARB_depth_clamp";
+	glRefConfig.depthClamp = qfalse;
+	if( GLimp_HaveExtension( extension ) )
+	{
+		glRefConfig.depthClamp = qtrue;
+		ri.Printf(PRINT_ALL, result[1], extension);
+	}
+	else
+	{
+		ri.Printf(PRINT_ALL, result[2], extension);
+	}
+}