From 01de8700ec7214e9c58cf235020c2a21ca82bddd Mon Sep 17 00:00:00 2001
From: Mark Vejvoda <mark_vejvoda@hotmail.com>
Date: Tue, 8 Feb 2011 07:33:28 +0000
Subject: [PATCH] - stupid win32 hacks to allow opengl extensions for FBOs

---
 .../sources/graphics/gl/texture_gl.cpp        | 28 ++++++++++++++-----
 1 file changed, 21 insertions(+), 7 deletions(-)

diff --git a/source/shared_lib/sources/graphics/gl/texture_gl.cpp b/source/shared_lib/sources/graphics/gl/texture_gl.cpp
index c57c91d1..1a0638ae 100644
--- a/source/shared_lib/sources/graphics/gl/texture_gl.cpp
+++ b/source/shared_lib/sources/graphics/gl/texture_gl.cpp
@@ -8,7 +8,6 @@
 //	by the Free Software Foundation; either version 2 of the
 //	License, or (at your option) any later version
 // ==============================================================
-
 #include "texture_gl.h"
 #include <stdexcept>
 #include "opengl.h"
@@ -17,19 +16,34 @@
 #include "conversion.h"
 #include <algorithm>
 #include "util.h"
+#ifdef WIN32
+#include "glext.h"
+#endif
+
 #include "leak_dumper.h"
 
 using namespace std;
 
 // Define FBO's (Frame Buffer Objects) for win32
-
 #ifdef WIN32
 
-PFNGLGENFRAMEBUFFERSEXTPROC glGenFramebuffersEXT;
-PFNGLBINDFRAMEBUFFEREXTPROC glBindFramebufferEXT;
-PFNGLFRAMEBUFFERTEXTURE2DEXTPROC glFramebufferTexture2DEXT;
-PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC glCheckFramebufferStatusEXT;
-PFNGLDELETEFRAMEBUFFERSEXTPROC glDeleteFramebuffersEXT;
+#define GL_FRAMEBUFFER_EXT 0x8D40
+#define GL_COLOR_ATTACHMENT0_EXT 0x8CE0
+#define GL_RENDERBUFFER_EXT 0x8D41
+#define GL_DEPTH_ATTACHMENT_EXT 0x8D00
+#define GL_FRAMEBUFFER_COMPLETE_EXT 0x8CD5
+
typedef void (APIENTRY * PFNGLGENFRAMEBUFFERSEXTPROC) (GLsizei n, GLuint* framebuffers);
typedef void (APIENTRY * PFNGLBINDFRAMEBUFFEREXTPROC) (GLenum target, GLuint framebuffer);
typedef void (APIENTRY * PFNGLBINDRENDERBUFFEREXTPROC) (GLenum target, GLuint renderbuffer);
typedef GLenum (APIENTRY * PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC) (GLenum target);
typedef void (APIENTRY * PFNGLDELETEFRAMEBUFFERSEXTPROC) (GLsizei n, const GLuint* framebuffers);
typedef void (APIENTRY * PFNGLDELETERENDERBUFFERSEXTPROC) (GLsizei n, const GLuint* renderbuffers);
typedef void (APIENTRY * PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC) (GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
typedef void (APIENTRY * PFNGLFRAMEBUFFERTEXTURE1DEXTPROC) (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
typedef void (APIENTRY * PFNGLFRAMEBUFFERTEXTURE2DEXTPROC) (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
typedef void (APIENTRY * PFNGLFRAMEBUFFERTEXTURE3DEXTPROC) (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLint zoffset);
typedef void (APIENTRY * PFNGLGENRENDERBUFFERSEXTPROC) (GLsizei n, GLuint* renderbuffers);
typedef void (APIENTRY * PFNGLGENERATEMIPMAPEXTPROC) (GLenum target);
typedef void (APIENTRY * PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVEXTPROC) (GLenum target, GLenum attachment, GLenum pname, GLint* params);
typedef void (APIENTRY * PFNGLGETRENDERBUFFERPARAMETERIVEXTPROC) (GLenum target, GLenum pname, GLint* params);
typedef GLboolean (APIENTRY * PFNGLISFRAMEBUFFEREXTPROC) (GLuint framebuffer);
typedef GLboolean (APIENTRY * PFNGLISRENDERBUFFEREXTPROC) (GLuint renderbuffer);
typedef void (APIENTRY * PFNGLRENDERBUFFERSTORAGEEXTPROC) (GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
+
+PFNGLGENFRAMEBUFFERSEXTPROC glGenFramebuffersEXT = NULL;
+PFNGLBINDFRAMEBUFFEREXTPROC glBindFramebufferEXT = NULL;
+PFNGLFRAMEBUFFERTEXTURE2DEXTPROC glFramebufferTexture2DEXT = NULL;
+PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC glCheckFramebufferStatusEXT = NULL;
+PFNGLDELETEFRAMEBUFFERSEXTPROC glDeleteFramebuffersEXT = NULL;
+PFNGLRENDERBUFFERSTORAGEEXTPROC glRenderbufferStorageEXT = NULL;
+PFNGLGENRENDERBUFFERSEXTPROC glGenRenderbuffersEXT = NULL;
+PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC glFramebufferRenderbufferEXT = NULL;
+PFNGLDELETERENDERBUFFERSEXTPROC glDeleteRenderbuffersEXT = NULL;
+PFNGLBINDRENDERBUFFEREXTPROC glBindRenderbufferEXT = NULL;
 
 #endif