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/*
Copyright (C) 1997-2001 Id Software, Inc.
This program 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.
This program 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 this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "shared/shared.h"
#include "common/common.h"
#include "client/video.h"
#include "fixed.h"
// ==========================================================
// OpenGL 3.0 core function
PFNGLGENERATEMIPMAPPROC qglGenerateMipmap;
// GL_ARB_fragment_program
PFNGLPROGRAMSTRINGARBPROC qglProgramStringARB;
PFNGLBINDPROGRAMARBPROC qglBindProgramARB;
PFNGLDELETEPROGRAMSARBPROC qglDeleteProgramsARB;
PFNGLGENPROGRAMSARBPROC qglGenProgramsARB;
PFNGLPROGRAMENVPARAMETER4FVARBPROC qglProgramEnvParameter4fvARB;
PFNGLPROGRAMLOCALPARAMETER4FVARBPROC qglProgramLocalParameter4fvARB;
// GL_ARB_multitexture
PFNGLACTIVETEXTUREARBPROC qglActiveTextureARB;
PFNGLCLIENTACTIVETEXTUREARBPROC qglClientActiveTextureARB;
// GL_ARB_vertex_buffer_object
PFNGLBINDBUFFERARBPROC qglBindBufferARB;
PFNGLDELETEBUFFERSARBPROC qglDeleteBuffersARB;
PFNGLGENBUFFERSARBPROC qglGenBuffersARB;
PFNGLBUFFERDATAARBPROC qglBufferDataARB;
PFNGLBUFFERSUBDATAARBPROC qglBufferSubDataARB;
// GL_EXT_compiled_vertex_array
PFNGLLOCKARRAYSEXTPROC qglLockArraysEXT;
PFNGLUNLOCKARRAYSEXTPROC qglUnlockArraysEXT;
// ==========================================================
void QGL_ShutdownExtensions(unsigned mask)
{
if (mask & QGL_ARB_fragment_program) {
qglProgramStringARB = NULL;
qglBindProgramARB = NULL;
qglDeleteProgramsARB = NULL;
qglGenProgramsARB = NULL;
qglProgramEnvParameter4fvARB = NULL;
qglProgramLocalParameter4fvARB = NULL;
}
if (mask & QGL_ARB_multitexture) {
qglActiveTextureARB = NULL;
qglClientActiveTextureARB = NULL;
}
if (mask & QGL_ARB_vertex_buffer_object) {
qglBindBufferARB = NULL;
qglDeleteBuffersARB = NULL;
qglGenBuffersARB = NULL;
qglBufferDataARB = NULL;
qglBufferSubDataARB = NULL;
}
if (mask & QGL_EXT_compiled_vertex_array) {
qglLockArraysEXT = NULL;
qglUnlockArraysEXT = NULL;
}
if (mask & QGL_3_0_core_functions) {
qglGenerateMipmap = NULL;
}
}
#define GPA(x) VID_GetProcAddr(x)
void QGL_InitExtensions(unsigned mask)
{
if (mask & QGL_ARB_fragment_program) {
qglProgramStringARB = GPA("glProgramStringARB");
qglBindProgramARB = GPA("glBindProgramARB");
qglDeleteProgramsARB = GPA("glDeleteProgramsARB");
qglGenProgramsARB = GPA("glGenProgramsARB");
qglProgramEnvParameter4fvARB = GPA("glProgramEnvParameter4fvARB");
qglProgramLocalParameter4fvARB = GPA("glProgramLocalParameter4fvARB");
}
if (mask & QGL_ARB_multitexture) {
qglActiveTextureARB = GPA("glActiveTextureARB");
qglClientActiveTextureARB = GPA("glClientActiveTextureARB");
}
if (mask & QGL_ARB_vertex_buffer_object) {
qglBindBufferARB = GPA("glBindBufferARB");
qglDeleteBuffersARB = GPA("glDeleteBuffersARB");
qglGenBuffersARB = GPA("glGenBuffersARB");
qglBufferDataARB = GPA("glBufferDataARB");
qglBufferSubDataARB = GPA("glBufferSubDataARB");
}
if (mask & QGL_EXT_compiled_vertex_array) {
qglLockArraysEXT = GPA("glLockArraysEXT");
qglUnlockArraysEXT = GPA("glUnlockArraysEXT");
}
if (mask & QGL_3_0_core_functions) {
qglGenerateMipmap = GPA("glGenerateMipmap");
}
}
#undef GPA
unsigned QGL_ParseExtensionString(const char *s)
{
// must match defines in fixed.h!
static const char *const extnames[] = {
"GL_ARB_fragment_program",
"GL_ARB_multitexture",
"GL_ARB_vertex_buffer_object",
"GL_EXT_compiled_vertex_array",
"GL_EXT_texture_filter_anisotropic",
NULL
};
return Com_ParseExtensionString(s, extnames);
}
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