From: Mikko Rasa <tdb@tdb.fi>
Date: Tue, 20 Aug 2013 15:27:43 +0000 (+0300)
Subject: Do not store generated files in the repository
X-Git-Url: http://git.tdb.fi/?a=commitdiff_plain;h=619aae12e01f25e79626a94c973927e5599e99a5;p=libs%2Fgl.git

Do not store generated files in the repository

Instead generate them during the build process.  This helps with managing
any changes that might be necessary when porting to new platforms.
---

diff --git a/Build b/Build
index 21937532..1aae9864 100644
--- a/Build
+++ b/Build
@@ -9,13 +9,23 @@ package "mspgl"
 	require "mspgui";
 	require "opengl";
 
+	generate "GLEX"
+	{
+		in_suffix ".glext";
+		out_suffix ".cpp";
+		out_suffix ".h";
+		command "scripts/extgen.py";
+	};
+
 	library "mspgl"
 	{
 		source "source";
+		source "extensions";
 		install true;
 		install_map
 		{
 			map "source" "include/msp/gl";
+			map "extensions" "include/msp/gl/extensions";
 		};
 	};
 
diff --git a/extensions/arb_draw_buffers.glext b/extensions/arb_draw_buffers.glext
new file mode 100644
index 00000000..c17d228a
--- /dev/null
+++ b/extensions/arb_draw_buffers.glext
@@ -0,0 +1 @@
+extension ARB_draw_buffers
diff --git a/extensions/arb_fragment_shader.glext b/extensions/arb_fragment_shader.glext
new file mode 100644
index 00000000..ac02f71f
--- /dev/null
+++ b/extensions/arb_fragment_shader.glext
@@ -0,0 +1,2 @@
+extension ARB_fragment_shader
+core_version 2.0
diff --git a/extensions/arb_multitexture.glext b/extensions/arb_multitexture.glext
new file mode 100644
index 00000000..78e8d9ba
--- /dev/null
+++ b/extensions/arb_multitexture.glext
@@ -0,0 +1 @@
+extension ARB_multitexture
diff --git a/extensions/arb_pixel_buffer_object.glext b/extensions/arb_pixel_buffer_object.glext
new file mode 100644
index 00000000..c11586d8
--- /dev/null
+++ b/extensions/arb_pixel_buffer_object.glext
@@ -0,0 +1,2 @@
+extension ARB_pixel_buffer_object
+core_version 2.1
diff --git a/extensions/arb_shader_objects.glext b/extensions/arb_shader_objects.glext
new file mode 100644
index 00000000..7d0ba645
--- /dev/null
+++ b/extensions/arb_shader_objects.glext
@@ -0,0 +1 @@
+extension ARB_shader_objects
diff --git a/extensions/arb_texture_cube_map.glext b/extensions/arb_texture_cube_map.glext
new file mode 100644
index 00000000..16a6a929
--- /dev/null
+++ b/extensions/arb_texture_cube_map.glext
@@ -0,0 +1,2 @@
+extension ARB_texture_cube_map
+core_version 1.3
diff --git a/extensions/arb_texture_float.glext b/extensions/arb_texture_float.glext
new file mode 100644
index 00000000..bb379fdf
--- /dev/null
+++ b/extensions/arb_texture_float.glext
@@ -0,0 +1,2 @@
+extension ARB_texture_float
+core_version 3.0
diff --git a/extensions/arb_uniform_buffer_object.glext b/extensions/arb_uniform_buffer_object.glext
new file mode 100644
index 00000000..c6b1b443
--- /dev/null
+++ b/extensions/arb_uniform_buffer_object.glext
@@ -0,0 +1,2 @@
+extension ARB_uniform_buffer_object
+core_version 3.0
diff --git a/extensions/arb_vertex_buffer_object.glext b/extensions/arb_vertex_buffer_object.glext
new file mode 100644
index 00000000..0eadd25f
--- /dev/null
+++ b/extensions/arb_vertex_buffer_object.glext
@@ -0,0 +1 @@
+extension ARB_vertex_buffer_object
diff --git a/extensions/arb_vertex_shader.glext b/extensions/arb_vertex_shader.glext
new file mode 100644
index 00000000..73d559b4
--- /dev/null
+++ b/extensions/arb_vertex_shader.glext
@@ -0,0 +1,2 @@
+extension ARB_vertex_shader
+secondary ARB_vertex_program
diff --git a/extensions/ext_bgra.glext b/extensions/ext_bgra.glext
new file mode 100644
index 00000000..b449b888
--- /dev/null
+++ b/extensions/ext_bgra.glext
@@ -0,0 +1,2 @@
+extension EXT_bgra
+core_version 1.2
diff --git a/extensions/ext_blend_minmax.glext b/extensions/ext_blend_minmax.glext
new file mode 100644
index 00000000..5b2174d5
--- /dev/null
+++ b/extensions/ext_blend_minmax.glext
@@ -0,0 +1 @@
+extension EXT_blend_minmax
diff --git a/extensions/ext_blend_subtract.glext b/extensions/ext_blend_subtract.glext
new file mode 100644
index 00000000..312119da
--- /dev/null
+++ b/extensions/ext_blend_subtract.glext
@@ -0,0 +1,2 @@
+extension EXT_blend_subtract
+core_version 1.2
diff --git a/extensions/ext_draw_range_elements.glext b/extensions/ext_draw_range_elements.glext
new file mode 100644
index 00000000..353c203a
--- /dev/null
+++ b/extensions/ext_draw_range_elements.glext
@@ -0,0 +1 @@
+extension EXT_draw_range_elements
diff --git a/extensions/ext_framebuffer_blit.glext b/extensions/ext_framebuffer_blit.glext
new file mode 100644
index 00000000..4c78ba51
--- /dev/null
+++ b/extensions/ext_framebuffer_blit.glext
@@ -0,0 +1 @@
+extension EXT_framebuffer_blit
diff --git a/extensions/ext_framebuffer_multisample.glext b/extensions/ext_framebuffer_multisample.glext
new file mode 100644
index 00000000..91f26a7f
--- /dev/null
+++ b/extensions/ext_framebuffer_multisample.glext
@@ -0,0 +1 @@
+extension EXT_framebuffer_multisample
diff --git a/extensions/ext_framebuffer_object.glext b/extensions/ext_framebuffer_object.glext
new file mode 100644
index 00000000..6d5465df
--- /dev/null
+++ b/extensions/ext_framebuffer_object.glext
@@ -0,0 +1 @@
+extension EXT_framebuffer_object
diff --git a/extensions/ext_texture3d.glext b/extensions/ext_texture3d.glext
new file mode 100644
index 00000000..e9bc90bb
--- /dev/null
+++ b/extensions/ext_texture3d.glext
@@ -0,0 +1 @@
+extension EXT_texture3D
diff --git a/extensions/ext_texture_filter_anisotropic.glext b/extensions/ext_texture_filter_anisotropic.glext
new file mode 100644
index 00000000..6d7c6c11
--- /dev/null
+++ b/extensions/ext_texture_filter_anisotropic.glext
@@ -0,0 +1 @@
+extension EXT_texture_filter_anisotropic
diff --git a/extensions/nv_primitive_restart.glext b/extensions/nv_primitive_restart.glext
new file mode 100644
index 00000000..43218616
--- /dev/null
+++ b/extensions/nv_primitive_restart.glext
@@ -0,0 +1 @@
+extension NV_primitive_restart
diff --git a/extensions/sgis_generate_mipmap.glext b/extensions/sgis_generate_mipmap.glext
new file mode 100644
index 00000000..9ccaffc1
--- /dev/null
+++ b/extensions/sgis_generate_mipmap.glext
@@ -0,0 +1 @@
+extension SGIS_generate_mipmap
diff --git a/scripts/extgen.py b/scripts/extgen.py
index 4ccf27a6..bcff3b44 100755
--- a/scripts/extgen.py
+++ b/scripts/extgen.py
@@ -1,6 +1,7 @@
 #!/usr/bin/python
 
 import sys
+import os
 
 if len(sys.argv)<2:
 	print """Usage:
@@ -13,13 +14,34 @@ given to override the version where <extension> was promoted to core."""
 	sys.exit(0)
 
 ext = sys.argv[1]
+out_base = None
+if ext.endswith(".glext"):
+	fn = ext
+	ext = None
+	ver = None
+	secondary = []
+	for line in open(fn):
+		parts = line.split()
+		if parts[0]=="extension":
+			ext = parts[1]
+		elif parts[0]=="core_version":
+			ver = parts[1]
+		elif parts[0]=="secondary":
+			secondary.append(parts[1])
+	if len(sys.argv)>=3:
+		out_base = os.path.splitext(sys.argv[2])[0]
+else:
+	secondary = sys.argv[2:]
+	ver = None
+	if secondary and secondary[0][0].isdigit():
+		ver = secondary.pop(0)
+
 exttype = ext.split('_')[0]
-secondary = sys.argv[2:]
-ver = None
-if secondary and secondary[0][0].isdigit():
-	ver = secondary.pop(0)
 bp_ext = None
 
+if not out_base:
+	out_base = ext.lower()
+
 class Function:
 	def __init__(self, name):
 		self.name = name
@@ -103,13 +125,13 @@ for f in funcs:
 if ver:
 	ver = map(int, ver.split('.'))
 
-out = file(ext.lower()+".h", "w")
+out = file(out_base+".h", "w")
 out.write("#ifndef MSP_GL_%s_\n"%ext.upper())
 out.write("#define MSP_GL_%s_\n"%ext.upper())
 
 out.write("""
-#include "extension.h"
-#include "gl.h"
+#include <msp/gl/extension.h>
+#include <msp/gl/gl.h>
 #include <GL/glext.h>
 
 namespace Msp {
@@ -130,7 +152,7 @@ out.write("""
 #endif
 """)
 
-out = file(ext.lower()+".cpp", "w")
+out = file(out_base+".cpp", "w")
 out.write("#include \"%s.h\"\n"%ext.lower())
 
 out.write("""
diff --git a/source/arb_draw_buffers.cpp b/source/arb_draw_buffers.cpp
deleted file mode 100644
index 5f843498..00000000
--- a/source/arb_draw_buffers.cpp
+++ /dev/null
@@ -1,26 +0,0 @@
-#include "arb_draw_buffers.h"
-
-namespace Msp {
-namespace GL {
-
-PFNGLDRAWBUFFERSPROC glDrawBuffers = 0;
-
-Extension::SupportLevel init_arb_draw_buffers()
-{
-	if(is_version_at_least(2, 0))
-	{
-		glDrawBuffers = reinterpret_cast<PFNGLDRAWBUFFERSPROC>(get_proc_address("glDrawBuffers"));
-		return Extension::CORE;
-	}
-	if(is_supported("GL_ARB_draw_buffers"))
-	{
-		glDrawBuffers = reinterpret_cast<PFNGLDRAWBUFFERSPROC>(get_proc_address("glDrawBuffersARB"));
-		return Extension::EXTENSION;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension ARB_draw_buffers("GL_ARB_draw_buffers", init_arb_draw_buffers);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/arb_draw_buffers.h b/source/arb_draw_buffers.h
deleted file mode 100644
index cd2c71bc..00000000
--- a/source/arb_draw_buffers.h
+++ /dev/null
@@ -1,18 +0,0 @@
-#ifndef MSP_GL_ARB_DRAW_BUFFERS_
-#define MSP_GL_ARB_DRAW_BUFFERS_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern PFNGLDRAWBUFFERSPROC glDrawBuffers;
-
-extern Extension ARB_draw_buffers;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/arb_fragment_shader.cpp b/source/arb_fragment_shader.cpp
deleted file mode 100644
index 18524dcf..00000000
--- a/source/arb_fragment_shader.cpp
+++ /dev/null
@@ -1,22 +0,0 @@
-#include "arb_fragment_shader.h"
-
-namespace Msp {
-namespace GL {
-
-Extension::SupportLevel init_arb_fragment_shader()
-{
-	if(is_version_at_least(2, 0))
-	{
-		return Extension::CORE;
-	}
-	if(is_supported("GL_ARB_fragment_shader"))
-	{
-		return Extension::EXTENSION;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension ARB_fragment_shader("GL_ARB_fragment_shader", init_arb_fragment_shader);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/arb_fragment_shader.h b/source/arb_fragment_shader.h
deleted file mode 100644
index 984f1555..00000000
--- a/source/arb_fragment_shader.h
+++ /dev/null
@@ -1,16 +0,0 @@
-#ifndef MSP_GL_ARB_FRAGMENT_SHADER_
-#define MSP_GL_ARB_FRAGMENT_SHADER_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern Extension ARB_fragment_shader;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/arb_multitexture.cpp b/source/arb_multitexture.cpp
deleted file mode 100644
index 4eeefda3..00000000
--- a/source/arb_multitexture.cpp
+++ /dev/null
@@ -1,125 +0,0 @@
-#include "arb_multitexture.h"
-
-namespace Msp {
-namespace GL {
-
-PFNGLACTIVETEXTUREARBPROC glActiveTexture = 0;
-PFNGLCLIENTACTIVETEXTUREARBPROC glClientActiveTexture = 0;
-PFNGLMULTITEXCOORD1DARBPROC glMultiTexCoord1d = 0;
-PFNGLMULTITEXCOORD1DVARBPROC glMultiTexCoord1dv = 0;
-PFNGLMULTITEXCOORD1FARBPROC glMultiTexCoord1f = 0;
-PFNGLMULTITEXCOORD1FVARBPROC glMultiTexCoord1fv = 0;
-PFNGLMULTITEXCOORD1IARBPROC glMultiTexCoord1i = 0;
-PFNGLMULTITEXCOORD1IVARBPROC glMultiTexCoord1iv = 0;
-PFNGLMULTITEXCOORD1SARBPROC glMultiTexCoord1s = 0;
-PFNGLMULTITEXCOORD1SVARBPROC glMultiTexCoord1sv = 0;
-PFNGLMULTITEXCOORD2DARBPROC glMultiTexCoord2d = 0;
-PFNGLMULTITEXCOORD2DVARBPROC glMultiTexCoord2dv = 0;
-PFNGLMULTITEXCOORD2FARBPROC glMultiTexCoord2f = 0;
-PFNGLMULTITEXCOORD2FVARBPROC glMultiTexCoord2fv = 0;
-PFNGLMULTITEXCOORD2IARBPROC glMultiTexCoord2i = 0;
-PFNGLMULTITEXCOORD2IVARBPROC glMultiTexCoord2iv = 0;
-PFNGLMULTITEXCOORD2SARBPROC glMultiTexCoord2s = 0;
-PFNGLMULTITEXCOORD2SVARBPROC glMultiTexCoord2sv = 0;
-PFNGLMULTITEXCOORD3DARBPROC glMultiTexCoord3d = 0;
-PFNGLMULTITEXCOORD3DVARBPROC glMultiTexCoord3dv = 0;
-PFNGLMULTITEXCOORD3FARBPROC glMultiTexCoord3f = 0;
-PFNGLMULTITEXCOORD3FVARBPROC glMultiTexCoord3fv = 0;
-PFNGLMULTITEXCOORD3IARBPROC glMultiTexCoord3i = 0;
-PFNGLMULTITEXCOORD3IVARBPROC glMultiTexCoord3iv = 0;
-PFNGLMULTITEXCOORD3SARBPROC glMultiTexCoord3s = 0;
-PFNGLMULTITEXCOORD3SVARBPROC glMultiTexCoord3sv = 0;
-PFNGLMULTITEXCOORD4DARBPROC glMultiTexCoord4d = 0;
-PFNGLMULTITEXCOORD4DVARBPROC glMultiTexCoord4dv = 0;
-PFNGLMULTITEXCOORD4FARBPROC glMultiTexCoord4f = 0;
-PFNGLMULTITEXCOORD4FVARBPROC glMultiTexCoord4fv = 0;
-PFNGLMULTITEXCOORD4IARBPROC glMultiTexCoord4i = 0;
-PFNGLMULTITEXCOORD4IVARBPROC glMultiTexCoord4iv = 0;
-PFNGLMULTITEXCOORD4SARBPROC glMultiTexCoord4s = 0;
-PFNGLMULTITEXCOORD4SVARBPROC glMultiTexCoord4sv = 0;
-
-Extension::SupportLevel init_arb_multitexture()
-{
-	if(is_version_at_least(1, 3))
-	{
-		glActiveTexture = reinterpret_cast<PFNGLACTIVETEXTUREARBPROC>(get_proc_address("glActiveTexture"));
-		glClientActiveTexture = reinterpret_cast<PFNGLCLIENTACTIVETEXTUREARBPROC>(get_proc_address("glClientActiveTexture"));
-		glMultiTexCoord1d = reinterpret_cast<PFNGLMULTITEXCOORD1DARBPROC>(get_proc_address("glMultiTexCoord1d"));
-		glMultiTexCoord1dv = reinterpret_cast<PFNGLMULTITEXCOORD1DVARBPROC>(get_proc_address("glMultiTexCoord1dv"));
-		glMultiTexCoord1f = reinterpret_cast<PFNGLMULTITEXCOORD1FARBPROC>(get_proc_address("glMultiTexCoord1f"));
-		glMultiTexCoord1fv = reinterpret_cast<PFNGLMULTITEXCOORD1FVARBPROC>(get_proc_address("glMultiTexCoord1fv"));
-		glMultiTexCoord1i = reinterpret_cast<PFNGLMULTITEXCOORD1IARBPROC>(get_proc_address("glMultiTexCoord1i"));
-		glMultiTexCoord1iv = reinterpret_cast<PFNGLMULTITEXCOORD1IVARBPROC>(get_proc_address("glMultiTexCoord1iv"));
-		glMultiTexCoord1s = reinterpret_cast<PFNGLMULTITEXCOORD1SARBPROC>(get_proc_address("glMultiTexCoord1s"));
-		glMultiTexCoord1sv = reinterpret_cast<PFNGLMULTITEXCOORD1SVARBPROC>(get_proc_address("glMultiTexCoord1sv"));
-		glMultiTexCoord2d = reinterpret_cast<PFNGLMULTITEXCOORD2DARBPROC>(get_proc_address("glMultiTexCoord2d"));
-		glMultiTexCoord2dv = reinterpret_cast<PFNGLMULTITEXCOORD2DVARBPROC>(get_proc_address("glMultiTexCoord2dv"));
-		glMultiTexCoord2f = reinterpret_cast<PFNGLMULTITEXCOORD2FARBPROC>(get_proc_address("glMultiTexCoord2f"));
-		glMultiTexCoord2fv = reinterpret_cast<PFNGLMULTITEXCOORD2FVARBPROC>(get_proc_address("glMultiTexCoord2fv"));
-		glMultiTexCoord2i = reinterpret_cast<PFNGLMULTITEXCOORD2IARBPROC>(get_proc_address("glMultiTexCoord2i"));
-		glMultiTexCoord2iv = reinterpret_cast<PFNGLMULTITEXCOORD2IVARBPROC>(get_proc_address("glMultiTexCoord2iv"));
-		glMultiTexCoord2s = reinterpret_cast<PFNGLMULTITEXCOORD2SARBPROC>(get_proc_address("glMultiTexCoord2s"));
-		glMultiTexCoord2sv = reinterpret_cast<PFNGLMULTITEXCOORD2SVARBPROC>(get_proc_address("glMultiTexCoord2sv"));
-		glMultiTexCoord3d = reinterpret_cast<PFNGLMULTITEXCOORD3DARBPROC>(get_proc_address("glMultiTexCoord3d"));
-		glMultiTexCoord3dv = reinterpret_cast<PFNGLMULTITEXCOORD3DVARBPROC>(get_proc_address("glMultiTexCoord3dv"));
-		glMultiTexCoord3f = reinterpret_cast<PFNGLMULTITEXCOORD3FARBPROC>(get_proc_address("glMultiTexCoord3f"));
-		glMultiTexCoord3fv = reinterpret_cast<PFNGLMULTITEXCOORD3FVARBPROC>(get_proc_address("glMultiTexCoord3fv"));
-		glMultiTexCoord3i = reinterpret_cast<PFNGLMULTITEXCOORD3IARBPROC>(get_proc_address("glMultiTexCoord3i"));
-		glMultiTexCoord3iv = reinterpret_cast<PFNGLMULTITEXCOORD3IVARBPROC>(get_proc_address("glMultiTexCoord3iv"));
-		glMultiTexCoord3s = reinterpret_cast<PFNGLMULTITEXCOORD3SARBPROC>(get_proc_address("glMultiTexCoord3s"));
-		glMultiTexCoord3sv = reinterpret_cast<PFNGLMULTITEXCOORD3SVARBPROC>(get_proc_address("glMultiTexCoord3sv"));
-		glMultiTexCoord4d = reinterpret_cast<PFNGLMULTITEXCOORD4DARBPROC>(get_proc_address("glMultiTexCoord4d"));
-		glMultiTexCoord4dv = reinterpret_cast<PFNGLMULTITEXCOORD4DVARBPROC>(get_proc_address("glMultiTexCoord4dv"));
-		glMultiTexCoord4f = reinterpret_cast<PFNGLMULTITEXCOORD4FARBPROC>(get_proc_address("glMultiTexCoord4f"));
-		glMultiTexCoord4fv = reinterpret_cast<PFNGLMULTITEXCOORD4FVARBPROC>(get_proc_address("glMultiTexCoord4fv"));
-		glMultiTexCoord4i = reinterpret_cast<PFNGLMULTITEXCOORD4IARBPROC>(get_proc_address("glMultiTexCoord4i"));
-		glMultiTexCoord4iv = reinterpret_cast<PFNGLMULTITEXCOORD4IVARBPROC>(get_proc_address("glMultiTexCoord4iv"));
-		glMultiTexCoord4s = reinterpret_cast<PFNGLMULTITEXCOORD4SARBPROC>(get_proc_address("glMultiTexCoord4s"));
-		glMultiTexCoord4sv = reinterpret_cast<PFNGLMULTITEXCOORD4SVARBPROC>(get_proc_address("glMultiTexCoord4sv"));
-		return Extension::CORE;
-	}
-	if(is_supported("GL_ARB_multitexture"))
-	{
-		glActiveTexture = reinterpret_cast<PFNGLACTIVETEXTUREARBPROC>(get_proc_address("glActiveTextureARB"));
-		glClientActiveTexture = reinterpret_cast<PFNGLCLIENTACTIVETEXTUREARBPROC>(get_proc_address("glClientActiveTextureARB"));
-		glMultiTexCoord1d = reinterpret_cast<PFNGLMULTITEXCOORD1DARBPROC>(get_proc_address("glMultiTexCoord1dARB"));
-		glMultiTexCoord1dv = reinterpret_cast<PFNGLMULTITEXCOORD1DVARBPROC>(get_proc_address("glMultiTexCoord1dvARB"));
-		glMultiTexCoord1f = reinterpret_cast<PFNGLMULTITEXCOORD1FARBPROC>(get_proc_address("glMultiTexCoord1fARB"));
-		glMultiTexCoord1fv = reinterpret_cast<PFNGLMULTITEXCOORD1FVARBPROC>(get_proc_address("glMultiTexCoord1fvARB"));
-		glMultiTexCoord1i = reinterpret_cast<PFNGLMULTITEXCOORD1IARBPROC>(get_proc_address("glMultiTexCoord1iARB"));
-		glMultiTexCoord1iv = reinterpret_cast<PFNGLMULTITEXCOORD1IVARBPROC>(get_proc_address("glMultiTexCoord1ivARB"));
-		glMultiTexCoord1s = reinterpret_cast<PFNGLMULTITEXCOORD1SARBPROC>(get_proc_address("glMultiTexCoord1sARB"));
-		glMultiTexCoord1sv = reinterpret_cast<PFNGLMULTITEXCOORD1SVARBPROC>(get_proc_address("glMultiTexCoord1svARB"));
-		glMultiTexCoord2d = reinterpret_cast<PFNGLMULTITEXCOORD2DARBPROC>(get_proc_address("glMultiTexCoord2dARB"));
-		glMultiTexCoord2dv = reinterpret_cast<PFNGLMULTITEXCOORD2DVARBPROC>(get_proc_address("glMultiTexCoord2dvARB"));
-		glMultiTexCoord2f = reinterpret_cast<PFNGLMULTITEXCOORD2FARBPROC>(get_proc_address("glMultiTexCoord2fARB"));
-		glMultiTexCoord2fv = reinterpret_cast<PFNGLMULTITEXCOORD2FVARBPROC>(get_proc_address("glMultiTexCoord2fvARB"));
-		glMultiTexCoord2i = reinterpret_cast<PFNGLMULTITEXCOORD2IARBPROC>(get_proc_address("glMultiTexCoord2iARB"));
-		glMultiTexCoord2iv = reinterpret_cast<PFNGLMULTITEXCOORD2IVARBPROC>(get_proc_address("glMultiTexCoord2ivARB"));
-		glMultiTexCoord2s = reinterpret_cast<PFNGLMULTITEXCOORD2SARBPROC>(get_proc_address("glMultiTexCoord2sARB"));
-		glMultiTexCoord2sv = reinterpret_cast<PFNGLMULTITEXCOORD2SVARBPROC>(get_proc_address("glMultiTexCoord2svARB"));
-		glMultiTexCoord3d = reinterpret_cast<PFNGLMULTITEXCOORD3DARBPROC>(get_proc_address("glMultiTexCoord3dARB"));
-		glMultiTexCoord3dv = reinterpret_cast<PFNGLMULTITEXCOORD3DVARBPROC>(get_proc_address("glMultiTexCoord3dvARB"));
-		glMultiTexCoord3f = reinterpret_cast<PFNGLMULTITEXCOORD3FARBPROC>(get_proc_address("glMultiTexCoord3fARB"));
-		glMultiTexCoord3fv = reinterpret_cast<PFNGLMULTITEXCOORD3FVARBPROC>(get_proc_address("glMultiTexCoord3fvARB"));
-		glMultiTexCoord3i = reinterpret_cast<PFNGLMULTITEXCOORD3IARBPROC>(get_proc_address("glMultiTexCoord3iARB"));
-		glMultiTexCoord3iv = reinterpret_cast<PFNGLMULTITEXCOORD3IVARBPROC>(get_proc_address("glMultiTexCoord3ivARB"));
-		glMultiTexCoord3s = reinterpret_cast<PFNGLMULTITEXCOORD3SARBPROC>(get_proc_address("glMultiTexCoord3sARB"));
-		glMultiTexCoord3sv = reinterpret_cast<PFNGLMULTITEXCOORD3SVARBPROC>(get_proc_address("glMultiTexCoord3svARB"));
-		glMultiTexCoord4d = reinterpret_cast<PFNGLMULTITEXCOORD4DARBPROC>(get_proc_address("glMultiTexCoord4dARB"));
-		glMultiTexCoord4dv = reinterpret_cast<PFNGLMULTITEXCOORD4DVARBPROC>(get_proc_address("glMultiTexCoord4dvARB"));
-		glMultiTexCoord4f = reinterpret_cast<PFNGLMULTITEXCOORD4FARBPROC>(get_proc_address("glMultiTexCoord4fARB"));
-		glMultiTexCoord4fv = reinterpret_cast<PFNGLMULTITEXCOORD4FVARBPROC>(get_proc_address("glMultiTexCoord4fvARB"));
-		glMultiTexCoord4i = reinterpret_cast<PFNGLMULTITEXCOORD4IARBPROC>(get_proc_address("glMultiTexCoord4iARB"));
-		glMultiTexCoord4iv = reinterpret_cast<PFNGLMULTITEXCOORD4IVARBPROC>(get_proc_address("glMultiTexCoord4ivARB"));
-		glMultiTexCoord4s = reinterpret_cast<PFNGLMULTITEXCOORD4SARBPROC>(get_proc_address("glMultiTexCoord4sARB"));
-		glMultiTexCoord4sv = reinterpret_cast<PFNGLMULTITEXCOORD4SVARBPROC>(get_proc_address("glMultiTexCoord4svARB"));
-		return Extension::EXTENSION;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension ARB_multitexture("GL_ARB_multitexture", init_arb_multitexture);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/arb_multitexture.h b/source/arb_multitexture.h
deleted file mode 100644
index 2d275499..00000000
--- a/source/arb_multitexture.h
+++ /dev/null
@@ -1,51 +0,0 @@
-#ifndef MSP_GL_ARB_MULTITEXTURE_
-#define MSP_GL_ARB_MULTITEXTURE_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern PFNGLACTIVETEXTUREARBPROC glActiveTexture;
-extern PFNGLCLIENTACTIVETEXTUREARBPROC glClientActiveTexture;
-extern PFNGLMULTITEXCOORD1DARBPROC glMultiTexCoord1d;
-extern PFNGLMULTITEXCOORD1DVARBPROC glMultiTexCoord1dv;
-extern PFNGLMULTITEXCOORD1FARBPROC glMultiTexCoord1f;
-extern PFNGLMULTITEXCOORD1FVARBPROC glMultiTexCoord1fv;
-extern PFNGLMULTITEXCOORD1IARBPROC glMultiTexCoord1i;
-extern PFNGLMULTITEXCOORD1IVARBPROC glMultiTexCoord1iv;
-extern PFNGLMULTITEXCOORD1SARBPROC glMultiTexCoord1s;
-extern PFNGLMULTITEXCOORD1SVARBPROC glMultiTexCoord1sv;
-extern PFNGLMULTITEXCOORD2DARBPROC glMultiTexCoord2d;
-extern PFNGLMULTITEXCOORD2DVARBPROC glMultiTexCoord2dv;
-extern PFNGLMULTITEXCOORD2FARBPROC glMultiTexCoord2f;
-extern PFNGLMULTITEXCOORD2FVARBPROC glMultiTexCoord2fv;
-extern PFNGLMULTITEXCOORD2IARBPROC glMultiTexCoord2i;
-extern PFNGLMULTITEXCOORD2IVARBPROC glMultiTexCoord2iv;
-extern PFNGLMULTITEXCOORD2SARBPROC glMultiTexCoord2s;
-extern PFNGLMULTITEXCOORD2SVARBPROC glMultiTexCoord2sv;
-extern PFNGLMULTITEXCOORD3DARBPROC glMultiTexCoord3d;
-extern PFNGLMULTITEXCOORD3DVARBPROC glMultiTexCoord3dv;
-extern PFNGLMULTITEXCOORD3FARBPROC glMultiTexCoord3f;
-extern PFNGLMULTITEXCOORD3FVARBPROC glMultiTexCoord3fv;
-extern PFNGLMULTITEXCOORD3IARBPROC glMultiTexCoord3i;
-extern PFNGLMULTITEXCOORD3IVARBPROC glMultiTexCoord3iv;
-extern PFNGLMULTITEXCOORD3SARBPROC glMultiTexCoord3s;
-extern PFNGLMULTITEXCOORD3SVARBPROC glMultiTexCoord3sv;
-extern PFNGLMULTITEXCOORD4DARBPROC glMultiTexCoord4d;
-extern PFNGLMULTITEXCOORD4DVARBPROC glMultiTexCoord4dv;
-extern PFNGLMULTITEXCOORD4FARBPROC glMultiTexCoord4f;
-extern PFNGLMULTITEXCOORD4FVARBPROC glMultiTexCoord4fv;
-extern PFNGLMULTITEXCOORD4IARBPROC glMultiTexCoord4i;
-extern PFNGLMULTITEXCOORD4IVARBPROC glMultiTexCoord4iv;
-extern PFNGLMULTITEXCOORD4SARBPROC glMultiTexCoord4s;
-extern PFNGLMULTITEXCOORD4SVARBPROC glMultiTexCoord4sv;
-
-extern Extension ARB_multitexture;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/arb_pixel_buffer_object.cpp b/source/arb_pixel_buffer_object.cpp
deleted file mode 100644
index 0243f8bd..00000000
--- a/source/arb_pixel_buffer_object.cpp
+++ /dev/null
@@ -1,22 +0,0 @@
-#include "arb_pixel_buffer_object.h"
-
-namespace Msp {
-namespace GL {
-
-Extension::SupportLevel init_arb_pixel_buffer_object()
-{
-	if(is_version_at_least(2, 1))
-	{
-		return Extension::CORE;
-	}
-	if(is_supported("GL_ARB_pixel_buffer_object"))
-	{
-		return Extension::EXTENSION;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension ARB_pixel_buffer_object("GL_ARB_pixel_buffer_object", init_arb_pixel_buffer_object);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/arb_pixel_buffer_object.h b/source/arb_pixel_buffer_object.h
deleted file mode 100644
index e7819821..00000000
--- a/source/arb_pixel_buffer_object.h
+++ /dev/null
@@ -1,16 +0,0 @@
-#ifndef MSP_GL_ARB_PIXEL_BUFFER_OBJECT_
-#define MSP_GL_ARB_PIXEL_BUFFER_OBJECT_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern Extension ARB_pixel_buffer_object;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/arb_shader_objects.cpp b/source/arb_shader_objects.cpp
deleted file mode 100644
index 61853db2..00000000
--- a/source/arb_shader_objects.cpp
+++ /dev/null
@@ -1,143 +0,0 @@
-#include "arb_shader_objects.h"
-
-namespace Msp {
-namespace GL {
-
-PFNGLATTACHOBJECTARBPROC glAttachShader = 0;
-PFNGLCOMPILESHADERARBPROC glCompileShader = 0;
-PFNGLCREATEPROGRAMOBJECTARBPROC glCreateProgram = 0;
-PFNGLCREATESHADEROBJECTARBPROC glCreateShader = 0;
-PFNGLDELETEOBJECTARBPROC glDeleteProgram = 0;
-PFNGLDELETEOBJECTARBPROC glDeleteShader = 0;
-PFNGLDETACHOBJECTARBPROC glDetachShader = 0;
-PFNGLGETACTIVEUNIFORMARBPROC glGetActiveUniform = 0;
-PFNGLGETATTACHEDOBJECTSARBPROC glGetAttachedShaders = 0;
-PFNGLGETINFOLOGARBPROC glGetProgramInfoLog = 0;
-PFNGLGETOBJECTPARAMETERIVARBPROC glGetProgramiv = 0;
-PFNGLGETINFOLOGARBPROC glGetShaderInfoLog = 0;
-PFNGLGETSHADERSOURCEARBPROC glGetShaderSource = 0;
-PFNGLGETOBJECTPARAMETERIVARBPROC glGetShaderiv = 0;
-PFNGLGETUNIFORMLOCATIONARBPROC glGetUniformLocation = 0;
-PFNGLGETUNIFORMFVARBPROC glGetUniformfv = 0;
-PFNGLGETUNIFORMIVARBPROC glGetUniformiv = 0;
-PFNGLLINKPROGRAMARBPROC glLinkProgram = 0;
-PFNGLSHADERSOURCEARBPROC glShaderSource = 0;
-PFNGLUNIFORM1FARBPROC glUniform1f = 0;
-PFNGLUNIFORM1FVARBPROC glUniform1fv = 0;
-PFNGLUNIFORM1IARBPROC glUniform1i = 0;
-PFNGLUNIFORM1IVARBPROC glUniform1iv = 0;
-PFNGLUNIFORM2FARBPROC glUniform2f = 0;
-PFNGLUNIFORM2FVARBPROC glUniform2fv = 0;
-PFNGLUNIFORM2IARBPROC glUniform2i = 0;
-PFNGLUNIFORM2IVARBPROC glUniform2iv = 0;
-PFNGLUNIFORM3FARBPROC glUniform3f = 0;
-PFNGLUNIFORM3FVARBPROC glUniform3fv = 0;
-PFNGLUNIFORM3IARBPROC glUniform3i = 0;
-PFNGLUNIFORM3IVARBPROC glUniform3iv = 0;
-PFNGLUNIFORM4FARBPROC glUniform4f = 0;
-PFNGLUNIFORM4FVARBPROC glUniform4fv = 0;
-PFNGLUNIFORM4IARBPROC glUniform4i = 0;
-PFNGLUNIFORM4IVARBPROC glUniform4iv = 0;
-PFNGLUNIFORMMATRIX2FVARBPROC glUniformMatrix2fv = 0;
-PFNGLUNIFORMMATRIX3FVARBPROC glUniformMatrix3fv = 0;
-PFNGLUNIFORMMATRIX4FVARBPROC glUniformMatrix4fv = 0;
-PFNGLUSEPROGRAMOBJECTARBPROC glUseProgram = 0;
-PFNGLVALIDATEPROGRAMARBPROC glValidateProgram = 0;
-
-Extension::SupportLevel init_arb_shader_objects()
-{
-	if(is_version_at_least(2, 0))
-	{
-		glAttachShader = reinterpret_cast<PFNGLATTACHOBJECTARBPROC>(get_proc_address("glAttachShader"));
-		glCompileShader = reinterpret_cast<PFNGLCOMPILESHADERARBPROC>(get_proc_address("glCompileShader"));
-		glCreateProgram = reinterpret_cast<PFNGLCREATEPROGRAMOBJECTARBPROC>(get_proc_address("glCreateProgram"));
-		glCreateShader = reinterpret_cast<PFNGLCREATESHADEROBJECTARBPROC>(get_proc_address("glCreateShader"));
-		glDeleteProgram = reinterpret_cast<PFNGLDELETEOBJECTARBPROC>(get_proc_address("glDeleteProgram"));
-		glDeleteShader = reinterpret_cast<PFNGLDELETEOBJECTARBPROC>(get_proc_address("glDeleteShader"));
-		glDetachShader = reinterpret_cast<PFNGLDETACHOBJECTARBPROC>(get_proc_address("glDetachShader"));
-		glGetActiveUniform = reinterpret_cast<PFNGLGETACTIVEUNIFORMARBPROC>(get_proc_address("glGetActiveUniform"));
-		glGetAttachedShaders = reinterpret_cast<PFNGLGETATTACHEDOBJECTSARBPROC>(get_proc_address("glGetAttachedShaders"));
-		glGetProgramInfoLog = reinterpret_cast<PFNGLGETINFOLOGARBPROC>(get_proc_address("glGetProgramInfoLog"));
-		glGetProgramiv = reinterpret_cast<PFNGLGETOBJECTPARAMETERIVARBPROC>(get_proc_address("glGetProgramiv"));
-		glGetShaderInfoLog = reinterpret_cast<PFNGLGETINFOLOGARBPROC>(get_proc_address("glGetShaderInfoLog"));
-		glGetShaderSource = reinterpret_cast<PFNGLGETSHADERSOURCEARBPROC>(get_proc_address("glGetShaderSource"));
-		glGetShaderiv = reinterpret_cast<PFNGLGETOBJECTPARAMETERIVARBPROC>(get_proc_address("glGetShaderiv"));
-		glGetUniformLocation = reinterpret_cast<PFNGLGETUNIFORMLOCATIONARBPROC>(get_proc_address("glGetUniformLocation"));
-		glGetUniformfv = reinterpret_cast<PFNGLGETUNIFORMFVARBPROC>(get_proc_address("glGetUniformfv"));
-		glGetUniformiv = reinterpret_cast<PFNGLGETUNIFORMIVARBPROC>(get_proc_address("glGetUniformiv"));
-		glLinkProgram = reinterpret_cast<PFNGLLINKPROGRAMARBPROC>(get_proc_address("glLinkProgram"));
-		glShaderSource = reinterpret_cast<PFNGLSHADERSOURCEARBPROC>(get_proc_address("glShaderSource"));
-		glUniform1f = reinterpret_cast<PFNGLUNIFORM1FARBPROC>(get_proc_address("glUniform1f"));
-		glUniform1fv = reinterpret_cast<PFNGLUNIFORM1FVARBPROC>(get_proc_address("glUniform1fv"));
-		glUniform1i = reinterpret_cast<PFNGLUNIFORM1IARBPROC>(get_proc_address("glUniform1i"));
-		glUniform1iv = reinterpret_cast<PFNGLUNIFORM1IVARBPROC>(get_proc_address("glUniform1iv"));
-		glUniform2f = reinterpret_cast<PFNGLUNIFORM2FARBPROC>(get_proc_address("glUniform2f"));
-		glUniform2fv = reinterpret_cast<PFNGLUNIFORM2FVARBPROC>(get_proc_address("glUniform2fv"));
-		glUniform2i = reinterpret_cast<PFNGLUNIFORM2IARBPROC>(get_proc_address("glUniform2i"));
-		glUniform2iv = reinterpret_cast<PFNGLUNIFORM2IVARBPROC>(get_proc_address("glUniform2iv"));
-		glUniform3f = reinterpret_cast<PFNGLUNIFORM3FARBPROC>(get_proc_address("glUniform3f"));
-		glUniform3fv = reinterpret_cast<PFNGLUNIFORM3FVARBPROC>(get_proc_address("glUniform3fv"));
-		glUniform3i = reinterpret_cast<PFNGLUNIFORM3IARBPROC>(get_proc_address("glUniform3i"));
-		glUniform3iv = reinterpret_cast<PFNGLUNIFORM3IVARBPROC>(get_proc_address("glUniform3iv"));
-		glUniform4f = reinterpret_cast<PFNGLUNIFORM4FARBPROC>(get_proc_address("glUniform4f"));
-		glUniform4fv = reinterpret_cast<PFNGLUNIFORM4FVARBPROC>(get_proc_address("glUniform4fv"));
-		glUniform4i = reinterpret_cast<PFNGLUNIFORM4IARBPROC>(get_proc_address("glUniform4i"));
-		glUniform4iv = reinterpret_cast<PFNGLUNIFORM4IVARBPROC>(get_proc_address("glUniform4iv"));
-		glUniformMatrix2fv = reinterpret_cast<PFNGLUNIFORMMATRIX2FVARBPROC>(get_proc_address("glUniformMatrix2fv"));
-		glUniformMatrix3fv = reinterpret_cast<PFNGLUNIFORMMATRIX3FVARBPROC>(get_proc_address("glUniformMatrix3fv"));
-		glUniformMatrix4fv = reinterpret_cast<PFNGLUNIFORMMATRIX4FVARBPROC>(get_proc_address("glUniformMatrix4fv"));
-		glUseProgram = reinterpret_cast<PFNGLUSEPROGRAMOBJECTARBPROC>(get_proc_address("glUseProgram"));
-		glValidateProgram = reinterpret_cast<PFNGLVALIDATEPROGRAMARBPROC>(get_proc_address("glValidateProgram"));
-		return Extension::CORE;
-	}
-	if(is_supported("GL_ARB_shader_objects"))
-	{
-		glAttachShader = reinterpret_cast<PFNGLATTACHOBJECTARBPROC>(get_proc_address("glAttachObjectARB"));
-		glCompileShader = reinterpret_cast<PFNGLCOMPILESHADERARBPROC>(get_proc_address("glCompileShaderARB"));
-		glCreateProgram = reinterpret_cast<PFNGLCREATEPROGRAMOBJECTARBPROC>(get_proc_address("glCreateProgramObjectARB"));
-		glCreateShader = reinterpret_cast<PFNGLCREATESHADEROBJECTARBPROC>(get_proc_address("glCreateShaderObjectARB"));
-		glDeleteProgram = reinterpret_cast<PFNGLDELETEOBJECTARBPROC>(get_proc_address("glDeleteObjectARB"));
-		glDeleteShader = reinterpret_cast<PFNGLDELETEOBJECTARBPROC>(get_proc_address("glDeleteObjectARB"));
-		glDetachShader = reinterpret_cast<PFNGLDETACHOBJECTARBPROC>(get_proc_address("glDetachObjectARB"));
-		glGetActiveUniform = reinterpret_cast<PFNGLGETACTIVEUNIFORMARBPROC>(get_proc_address("glGetActiveUniformARB"));
-		glGetAttachedShaders = reinterpret_cast<PFNGLGETATTACHEDOBJECTSARBPROC>(get_proc_address("glGetAttachedObjectsARB"));
-		glGetProgramInfoLog = reinterpret_cast<PFNGLGETINFOLOGARBPROC>(get_proc_address("glGetInfoLogARB"));
-		glGetProgramiv = reinterpret_cast<PFNGLGETOBJECTPARAMETERIVARBPROC>(get_proc_address("glGetObjectParameterivARB"));
-		glGetShaderInfoLog = reinterpret_cast<PFNGLGETINFOLOGARBPROC>(get_proc_address("glGetInfoLogARB"));
-		glGetShaderSource = reinterpret_cast<PFNGLGETSHADERSOURCEARBPROC>(get_proc_address("glGetShaderSourceARB"));
-		glGetShaderiv = reinterpret_cast<PFNGLGETOBJECTPARAMETERIVARBPROC>(get_proc_address("glGetObjectParameterivARB"));
-		glGetUniformLocation = reinterpret_cast<PFNGLGETUNIFORMLOCATIONARBPROC>(get_proc_address("glGetUniformLocationARB"));
-		glGetUniformfv = reinterpret_cast<PFNGLGETUNIFORMFVARBPROC>(get_proc_address("glGetUniformfvARB"));
-		glGetUniformiv = reinterpret_cast<PFNGLGETUNIFORMIVARBPROC>(get_proc_address("glGetUniformivARB"));
-		glLinkProgram = reinterpret_cast<PFNGLLINKPROGRAMARBPROC>(get_proc_address("glLinkProgramARB"));
-		glShaderSource = reinterpret_cast<PFNGLSHADERSOURCEARBPROC>(get_proc_address("glShaderSourceARB"));
-		glUniform1f = reinterpret_cast<PFNGLUNIFORM1FARBPROC>(get_proc_address("glUniform1fARB"));
-		glUniform1fv = reinterpret_cast<PFNGLUNIFORM1FVARBPROC>(get_proc_address("glUniform1fvARB"));
-		glUniform1i = reinterpret_cast<PFNGLUNIFORM1IARBPROC>(get_proc_address("glUniform1iARB"));
-		glUniform1iv = reinterpret_cast<PFNGLUNIFORM1IVARBPROC>(get_proc_address("glUniform1ivARB"));
-		glUniform2f = reinterpret_cast<PFNGLUNIFORM2FARBPROC>(get_proc_address("glUniform2fARB"));
-		glUniform2fv = reinterpret_cast<PFNGLUNIFORM2FVARBPROC>(get_proc_address("glUniform2fvARB"));
-		glUniform2i = reinterpret_cast<PFNGLUNIFORM2IARBPROC>(get_proc_address("glUniform2iARB"));
-		glUniform2iv = reinterpret_cast<PFNGLUNIFORM2IVARBPROC>(get_proc_address("glUniform2ivARB"));
-		glUniform3f = reinterpret_cast<PFNGLUNIFORM3FARBPROC>(get_proc_address("glUniform3fARB"));
-		glUniform3fv = reinterpret_cast<PFNGLUNIFORM3FVARBPROC>(get_proc_address("glUniform3fvARB"));
-		glUniform3i = reinterpret_cast<PFNGLUNIFORM3IARBPROC>(get_proc_address("glUniform3iARB"));
-		glUniform3iv = reinterpret_cast<PFNGLUNIFORM3IVARBPROC>(get_proc_address("glUniform3ivARB"));
-		glUniform4f = reinterpret_cast<PFNGLUNIFORM4FARBPROC>(get_proc_address("glUniform4fARB"));
-		glUniform4fv = reinterpret_cast<PFNGLUNIFORM4FVARBPROC>(get_proc_address("glUniform4fvARB"));
-		glUniform4i = reinterpret_cast<PFNGLUNIFORM4IARBPROC>(get_proc_address("glUniform4iARB"));
-		glUniform4iv = reinterpret_cast<PFNGLUNIFORM4IVARBPROC>(get_proc_address("glUniform4ivARB"));
-		glUniformMatrix2fv = reinterpret_cast<PFNGLUNIFORMMATRIX2FVARBPROC>(get_proc_address("glUniformMatrix2fvARB"));
-		glUniformMatrix3fv = reinterpret_cast<PFNGLUNIFORMMATRIX3FVARBPROC>(get_proc_address("glUniformMatrix3fvARB"));
-		glUniformMatrix4fv = reinterpret_cast<PFNGLUNIFORMMATRIX4FVARBPROC>(get_proc_address("glUniformMatrix4fvARB"));
-		glUseProgram = reinterpret_cast<PFNGLUSEPROGRAMOBJECTARBPROC>(get_proc_address("glUseProgramObjectARB"));
-		glValidateProgram = reinterpret_cast<PFNGLVALIDATEPROGRAMARBPROC>(get_proc_address("glValidateProgramARB"));
-		return Extension::EXTENSION;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension ARB_shader_objects("GL_ARB_shader_objects", init_arb_shader_objects);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/arb_shader_objects.h b/source/arb_shader_objects.h
deleted file mode 100644
index c40de633..00000000
--- a/source/arb_shader_objects.h
+++ /dev/null
@@ -1,57 +0,0 @@
-#ifndef MSP_GL_ARB_SHADER_OBJECTS_
-#define MSP_GL_ARB_SHADER_OBJECTS_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern PFNGLATTACHOBJECTARBPROC glAttachShader;
-extern PFNGLCOMPILESHADERARBPROC glCompileShader;
-extern PFNGLCREATEPROGRAMOBJECTARBPROC glCreateProgram;
-extern PFNGLCREATESHADEROBJECTARBPROC glCreateShader;
-extern PFNGLDELETEOBJECTARBPROC glDeleteProgram;
-extern PFNGLDELETEOBJECTARBPROC glDeleteShader;
-extern PFNGLDETACHOBJECTARBPROC glDetachShader;
-extern PFNGLGETACTIVEUNIFORMARBPROC glGetActiveUniform;
-extern PFNGLGETATTACHEDOBJECTSARBPROC glGetAttachedShaders;
-extern PFNGLGETINFOLOGARBPROC glGetProgramInfoLog;
-extern PFNGLGETOBJECTPARAMETERIVARBPROC glGetProgramiv;
-extern PFNGLGETINFOLOGARBPROC glGetShaderInfoLog;
-extern PFNGLGETSHADERSOURCEARBPROC glGetShaderSource;
-extern PFNGLGETOBJECTPARAMETERIVARBPROC glGetShaderiv;
-extern PFNGLGETUNIFORMLOCATIONARBPROC glGetUniformLocation;
-extern PFNGLGETUNIFORMFVARBPROC glGetUniformfv;
-extern PFNGLGETUNIFORMIVARBPROC glGetUniformiv;
-extern PFNGLLINKPROGRAMARBPROC glLinkProgram;
-extern PFNGLSHADERSOURCEARBPROC glShaderSource;
-extern PFNGLUNIFORM1FARBPROC glUniform1f;
-extern PFNGLUNIFORM1FVARBPROC glUniform1fv;
-extern PFNGLUNIFORM1IARBPROC glUniform1i;
-extern PFNGLUNIFORM1IVARBPROC glUniform1iv;
-extern PFNGLUNIFORM2FARBPROC glUniform2f;
-extern PFNGLUNIFORM2FVARBPROC glUniform2fv;
-extern PFNGLUNIFORM2IARBPROC glUniform2i;
-extern PFNGLUNIFORM2IVARBPROC glUniform2iv;
-extern PFNGLUNIFORM3FARBPROC glUniform3f;
-extern PFNGLUNIFORM3FVARBPROC glUniform3fv;
-extern PFNGLUNIFORM3IARBPROC glUniform3i;
-extern PFNGLUNIFORM3IVARBPROC glUniform3iv;
-extern PFNGLUNIFORM4FARBPROC glUniform4f;
-extern PFNGLUNIFORM4FVARBPROC glUniform4fv;
-extern PFNGLUNIFORM4IARBPROC glUniform4i;
-extern PFNGLUNIFORM4IVARBPROC glUniform4iv;
-extern PFNGLUNIFORMMATRIX2FVARBPROC glUniformMatrix2fv;
-extern PFNGLUNIFORMMATRIX3FVARBPROC glUniformMatrix3fv;
-extern PFNGLUNIFORMMATRIX4FVARBPROC glUniformMatrix4fv;
-extern PFNGLUSEPROGRAMOBJECTARBPROC glUseProgram;
-extern PFNGLVALIDATEPROGRAMARBPROC glValidateProgram;
-
-extern Extension ARB_shader_objects;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/arb_texture_cube_map.cpp b/source/arb_texture_cube_map.cpp
deleted file mode 100644
index b74993a9..00000000
--- a/source/arb_texture_cube_map.cpp
+++ /dev/null
@@ -1,22 +0,0 @@
-#include "arb_texture_cube_map.h"
-
-namespace Msp {
-namespace GL {
-
-Extension::SupportLevel init_arb_texture_cube_map()
-{
-	if(is_version_at_least(1, 3))
-	{
-		return Extension::CORE;
-	}
-	if(is_supported("GL_ARB_texture_cube_map"))
-	{
-		return Extension::EXTENSION;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension ARB_texture_cube_map("GL_ARB_texture_cube_map", init_arb_texture_cube_map);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/arb_texture_cube_map.h b/source/arb_texture_cube_map.h
deleted file mode 100644
index 3cde6e7d..00000000
--- a/source/arb_texture_cube_map.h
+++ /dev/null
@@ -1,16 +0,0 @@
-#ifndef MSP_GL_ARB_TEXTURE_CUBE_MAP_
-#define MSP_GL_ARB_TEXTURE_CUBE_MAP_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern Extension ARB_texture_cube_map;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/arb_texture_float.cpp b/source/arb_texture_float.cpp
deleted file mode 100644
index 9f76b3fd..00000000
--- a/source/arb_texture_float.cpp
+++ /dev/null
@@ -1,22 +0,0 @@
-#include "arb_texture_float.h"
-
-namespace Msp {
-namespace GL {
-
-Extension::SupportLevel init_arb_texture_float()
-{
-	if(is_version_at_least(3, 0))
-	{
-		return Extension::CORE;
-	}
-	if(is_supported("GL_ARB_texture_float"))
-	{
-		return Extension::EXTENSION;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension ARB_texture_float("GL_ARB_texture_float", init_arb_texture_float);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/arb_texture_float.h b/source/arb_texture_float.h
deleted file mode 100644
index 9eef6148..00000000
--- a/source/arb_texture_float.h
+++ /dev/null
@@ -1,16 +0,0 @@
-#ifndef MSP_GL_ARB_TEXTURE_FLOAT_
-#define MSP_GL_ARB_TEXTURE_FLOAT_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern Extension ARB_texture_float;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/arb_uniform_buffer_object.cpp b/source/arb_uniform_buffer_object.cpp
deleted file mode 100644
index 9b224ffb..00000000
--- a/source/arb_uniform_buffer_object.cpp
+++ /dev/null
@@ -1,37 +0,0 @@
-#include "arb_uniform_buffer_object.h"
-
-namespace Msp {
-namespace GL {
-
-PFNGLBINDBUFFERBASEPROC glBindBufferBase = 0;
-PFNGLBINDBUFFERRANGEPROC glBindBufferRange = 0;
-PFNGLGETACTIVEUNIFORMBLOCKNAMEPROC glGetActiveUniformBlockName = 0;
-PFNGLGETACTIVEUNIFORMBLOCKIVPROC glGetActiveUniformBlockiv = 0;
-PFNGLGETACTIVEUNIFORMNAMEPROC glGetActiveUniformName = 0;
-PFNGLGETACTIVEUNIFORMSIVPROC glGetActiveUniformsiv = 0;
-PFNGLGETUNIFORMBLOCKINDEXPROC glGetUniformBlockIndex = 0;
-PFNGLGETUNIFORMINDICESPROC glGetUniformIndices = 0;
-PFNGLUNIFORMBLOCKBINDINGPROC glUniformBlockBinding = 0;
-
-Extension::SupportLevel init_arb_uniform_buffer_object()
-{
-	if(is_version_at_least(3, 0) || is_supported("GL_ARB_uniform_buffer_object"))
-	{
-		glBindBufferBase = reinterpret_cast<PFNGLBINDBUFFERBASEPROC>(get_proc_address("glBindBufferBase"));
-		glBindBufferRange = reinterpret_cast<PFNGLBINDBUFFERRANGEPROC>(get_proc_address("glBindBufferRange"));
-		glGetActiveUniformBlockName = reinterpret_cast<PFNGLGETACTIVEUNIFORMBLOCKNAMEPROC>(get_proc_address("glGetActiveUniformBlockName"));
-		glGetActiveUniformBlockiv = reinterpret_cast<PFNGLGETACTIVEUNIFORMBLOCKIVPROC>(get_proc_address("glGetActiveUniformBlockiv"));
-		glGetActiveUniformName = reinterpret_cast<PFNGLGETACTIVEUNIFORMNAMEPROC>(get_proc_address("glGetActiveUniformName"));
-		glGetActiveUniformsiv = reinterpret_cast<PFNGLGETACTIVEUNIFORMSIVPROC>(get_proc_address("glGetActiveUniformsiv"));
-		glGetUniformBlockIndex = reinterpret_cast<PFNGLGETUNIFORMBLOCKINDEXPROC>(get_proc_address("glGetUniformBlockIndex"));
-		glGetUniformIndices = reinterpret_cast<PFNGLGETUNIFORMINDICESPROC>(get_proc_address("glGetUniformIndices"));
-		glUniformBlockBinding = reinterpret_cast<PFNGLUNIFORMBLOCKBINDINGPROC>(get_proc_address("glUniformBlockBinding"));
-		return Extension::CORE;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension ARB_uniform_buffer_object("GL_ARB_uniform_buffer_object", init_arb_uniform_buffer_object);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/arb_uniform_buffer_object.h b/source/arb_uniform_buffer_object.h
deleted file mode 100644
index 5a259252..00000000
--- a/source/arb_uniform_buffer_object.h
+++ /dev/null
@@ -1,26 +0,0 @@
-#ifndef MSP_GL_ARB_UNIFORM_BUFFER_OBJECT_
-#define MSP_GL_ARB_UNIFORM_BUFFER_OBJECT_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern PFNGLBINDBUFFERBASEPROC glBindBufferBase;
-extern PFNGLBINDBUFFERRANGEPROC glBindBufferRange;
-extern PFNGLGETACTIVEUNIFORMBLOCKNAMEPROC glGetActiveUniformBlockName;
-extern PFNGLGETACTIVEUNIFORMBLOCKIVPROC glGetActiveUniformBlockiv;
-extern PFNGLGETACTIVEUNIFORMNAMEPROC glGetActiveUniformName;
-extern PFNGLGETACTIVEUNIFORMSIVPROC glGetActiveUniformsiv;
-extern PFNGLGETUNIFORMBLOCKINDEXPROC glGetUniformBlockIndex;
-extern PFNGLGETUNIFORMINDICESPROC glGetUniformIndices;
-extern PFNGLUNIFORMBLOCKBINDINGPROC glUniformBlockBinding;
-
-extern Extension ARB_uniform_buffer_object;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/arb_vertex_buffer_object.cpp b/source/arb_vertex_buffer_object.cpp
deleted file mode 100644
index 431ad401..00000000
--- a/source/arb_vertex_buffer_object.cpp
+++ /dev/null
@@ -1,56 +0,0 @@
-#include "arb_vertex_buffer_object.h"
-
-namespace Msp {
-namespace GL {
-
-PFNGLBINDBUFFERARBPROC glBindBuffer = 0;
-PFNGLBUFFERDATAARBPROC glBufferData = 0;
-PFNGLBUFFERSUBDATAARBPROC glBufferSubData = 0;
-PFNGLDELETEBUFFERSARBPROC glDeleteBuffers = 0;
-PFNGLGENBUFFERSARBPROC glGenBuffers = 0;
-PFNGLGETBUFFERPARAMETERIVARBPROC glGetBufferParameteriv = 0;
-PFNGLGETBUFFERPOINTERVARBPROC glGetBufferPointerv = 0;
-PFNGLGETBUFFERSUBDATAARBPROC glGetBufferSubData = 0;
-PFNGLISBUFFERARBPROC glIsBuffer = 0;
-PFNGLMAPBUFFERARBPROC glMapBuffer = 0;
-PFNGLUNMAPBUFFERARBPROC glUnmapBuffer = 0;
-
-Extension::SupportLevel init_arb_vertex_buffer_object()
-{
-	if(is_version_at_least(1, 5))
-	{
-		glBindBuffer = reinterpret_cast<PFNGLBINDBUFFERARBPROC>(get_proc_address("glBindBuffer"));
-		glBufferData = reinterpret_cast<PFNGLBUFFERDATAARBPROC>(get_proc_address("glBufferData"));
-		glBufferSubData = reinterpret_cast<PFNGLBUFFERSUBDATAARBPROC>(get_proc_address("glBufferSubData"));
-		glDeleteBuffers = reinterpret_cast<PFNGLDELETEBUFFERSARBPROC>(get_proc_address("glDeleteBuffers"));
-		glGenBuffers = reinterpret_cast<PFNGLGENBUFFERSARBPROC>(get_proc_address("glGenBuffers"));
-		glGetBufferParameteriv = reinterpret_cast<PFNGLGETBUFFERPARAMETERIVARBPROC>(get_proc_address("glGetBufferParameteriv"));
-		glGetBufferPointerv = reinterpret_cast<PFNGLGETBUFFERPOINTERVARBPROC>(get_proc_address("glGetBufferPointerv"));
-		glGetBufferSubData = reinterpret_cast<PFNGLGETBUFFERSUBDATAARBPROC>(get_proc_address("glGetBufferSubData"));
-		glIsBuffer = reinterpret_cast<PFNGLISBUFFERARBPROC>(get_proc_address("glIsBuffer"));
-		glMapBuffer = reinterpret_cast<PFNGLMAPBUFFERARBPROC>(get_proc_address("glMapBuffer"));
-		glUnmapBuffer = reinterpret_cast<PFNGLUNMAPBUFFERARBPROC>(get_proc_address("glUnmapBuffer"));
-		return Extension::CORE;
-	}
-	if(is_supported("GL_ARB_vertex_buffer_object"))
-	{
-		glBindBuffer = reinterpret_cast<PFNGLBINDBUFFERARBPROC>(get_proc_address("glBindBufferARB"));
-		glBufferData = reinterpret_cast<PFNGLBUFFERDATAARBPROC>(get_proc_address("glBufferDataARB"));
-		glBufferSubData = reinterpret_cast<PFNGLBUFFERSUBDATAARBPROC>(get_proc_address("glBufferSubDataARB"));
-		glDeleteBuffers = reinterpret_cast<PFNGLDELETEBUFFERSARBPROC>(get_proc_address("glDeleteBuffersARB"));
-		glGenBuffers = reinterpret_cast<PFNGLGENBUFFERSARBPROC>(get_proc_address("glGenBuffersARB"));
-		glGetBufferParameteriv = reinterpret_cast<PFNGLGETBUFFERPARAMETERIVARBPROC>(get_proc_address("glGetBufferParameterivARB"));
-		glGetBufferPointerv = reinterpret_cast<PFNGLGETBUFFERPOINTERVARBPROC>(get_proc_address("glGetBufferPointervARB"));
-		glGetBufferSubData = reinterpret_cast<PFNGLGETBUFFERSUBDATAARBPROC>(get_proc_address("glGetBufferSubDataARB"));
-		glIsBuffer = reinterpret_cast<PFNGLISBUFFERARBPROC>(get_proc_address("glIsBufferARB"));
-		glMapBuffer = reinterpret_cast<PFNGLMAPBUFFERARBPROC>(get_proc_address("glMapBufferARB"));
-		glUnmapBuffer = reinterpret_cast<PFNGLUNMAPBUFFERARBPROC>(get_proc_address("glUnmapBufferARB"));
-		return Extension::EXTENSION;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension ARB_vertex_buffer_object("GL_ARB_vertex_buffer_object", init_arb_vertex_buffer_object);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/arb_vertex_buffer_object.h b/source/arb_vertex_buffer_object.h
deleted file mode 100644
index 2ee37271..00000000
--- a/source/arb_vertex_buffer_object.h
+++ /dev/null
@@ -1,28 +0,0 @@
-#ifndef MSP_GL_ARB_VERTEX_BUFFER_OBJECT_
-#define MSP_GL_ARB_VERTEX_BUFFER_OBJECT_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern PFNGLBINDBUFFERARBPROC glBindBuffer;
-extern PFNGLBUFFERDATAARBPROC glBufferData;
-extern PFNGLBUFFERSUBDATAARBPROC glBufferSubData;
-extern PFNGLDELETEBUFFERSARBPROC glDeleteBuffers;
-extern PFNGLGENBUFFERSARBPROC glGenBuffers;
-extern PFNGLGETBUFFERPARAMETERIVARBPROC glGetBufferParameteriv;
-extern PFNGLGETBUFFERPOINTERVARBPROC glGetBufferPointerv;
-extern PFNGLGETBUFFERSUBDATAARBPROC glGetBufferSubData;
-extern PFNGLISBUFFERARBPROC glIsBuffer;
-extern PFNGLMAPBUFFERARBPROC glMapBuffer;
-extern PFNGLUNMAPBUFFERARBPROC glUnmapBuffer;
-
-extern Extension ARB_vertex_buffer_object;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/arb_vertex_shader.cpp b/source/arb_vertex_shader.cpp
deleted file mode 100644
index b201802e..00000000
--- a/source/arb_vertex_shader.cpp
+++ /dev/null
@@ -1,161 +0,0 @@
-#include "arb_vertex_shader.h"
-
-namespace Msp {
-namespace GL {
-
-PFNGLBINDATTRIBLOCATIONARBPROC glBindAttribLocation = 0;
-PFNGLDISABLEVERTEXATTRIBARRAYARBPROC glDisableVertexAttribArray = 0;
-PFNGLENABLEVERTEXATTRIBARRAYARBPROC glEnableVertexAttribArray = 0;
-PFNGLGETACTIVEATTRIBARBPROC glGetActiveAttrib = 0;
-PFNGLGETATTRIBLOCATIONARBPROC glGetAttribLocation = 0;
-PFNGLGETVERTEXATTRIBPOINTERVARBPROC glGetVertexAttribPointerv = 0;
-PFNGLGETVERTEXATTRIBDVARBPROC glGetVertexAttribdv = 0;
-PFNGLGETVERTEXATTRIBFVARBPROC glGetVertexAttribfv = 0;
-PFNGLGETVERTEXATTRIBIVARBPROC glGetVertexAttribiv = 0;
-PFNGLVERTEXATTRIB1DARBPROC glVertexAttrib1d = 0;
-PFNGLVERTEXATTRIB1DVARBPROC glVertexAttrib1dv = 0;
-PFNGLVERTEXATTRIB1FARBPROC glVertexAttrib1f = 0;
-PFNGLVERTEXATTRIB1FVARBPROC glVertexAttrib1fv = 0;
-PFNGLVERTEXATTRIB1SARBPROC glVertexAttrib1s = 0;
-PFNGLVERTEXATTRIB1SVARBPROC glVertexAttrib1sv = 0;
-PFNGLVERTEXATTRIB2DARBPROC glVertexAttrib2d = 0;
-PFNGLVERTEXATTRIB2DVARBPROC glVertexAttrib2dv = 0;
-PFNGLVERTEXATTRIB2FARBPROC glVertexAttrib2f = 0;
-PFNGLVERTEXATTRIB2FVARBPROC glVertexAttrib2fv = 0;
-PFNGLVERTEXATTRIB2SARBPROC glVertexAttrib2s = 0;
-PFNGLVERTEXATTRIB2SVARBPROC glVertexAttrib2sv = 0;
-PFNGLVERTEXATTRIB3DARBPROC glVertexAttrib3d = 0;
-PFNGLVERTEXATTRIB3DVARBPROC glVertexAttrib3dv = 0;
-PFNGLVERTEXATTRIB3FARBPROC glVertexAttrib3f = 0;
-PFNGLVERTEXATTRIB3FVARBPROC glVertexAttrib3fv = 0;
-PFNGLVERTEXATTRIB3SARBPROC glVertexAttrib3s = 0;
-PFNGLVERTEXATTRIB3SVARBPROC glVertexAttrib3sv = 0;
-PFNGLVERTEXATTRIB4NBVARBPROC glVertexAttrib4Nbv = 0;
-PFNGLVERTEXATTRIB4NIVARBPROC glVertexAttrib4Niv = 0;
-PFNGLVERTEXATTRIB4NSVARBPROC glVertexAttrib4Nsv = 0;
-PFNGLVERTEXATTRIB4NUBARBPROC glVertexAttrib4Nub = 0;
-PFNGLVERTEXATTRIB4NUBVARBPROC glVertexAttrib4Nubv = 0;
-PFNGLVERTEXATTRIB4NUIVARBPROC glVertexAttrib4Nuiv = 0;
-PFNGLVERTEXATTRIB4NUSVARBPROC glVertexAttrib4Nusv = 0;
-PFNGLVERTEXATTRIB4BVARBPROC glVertexAttrib4bv = 0;
-PFNGLVERTEXATTRIB4DARBPROC glVertexAttrib4d = 0;
-PFNGLVERTEXATTRIB4DVARBPROC glVertexAttrib4dv = 0;
-PFNGLVERTEXATTRIB4FARBPROC glVertexAttrib4f = 0;
-PFNGLVERTEXATTRIB4FVARBPROC glVertexAttrib4fv = 0;
-PFNGLVERTEXATTRIB4IVARBPROC glVertexAttrib4iv = 0;
-PFNGLVERTEXATTRIB4SARBPROC glVertexAttrib4s = 0;
-PFNGLVERTEXATTRIB4SVARBPROC glVertexAttrib4sv = 0;
-PFNGLVERTEXATTRIB4UBVARBPROC glVertexAttrib4ubv = 0;
-PFNGLVERTEXATTRIB4UIVARBPROC glVertexAttrib4uiv = 0;
-PFNGLVERTEXATTRIB4USVARBPROC glVertexAttrib4usv = 0;
-PFNGLVERTEXATTRIBPOINTERARBPROC glVertexAttribPointer = 0;
-
-Extension::SupportLevel init_arb_vertex_shader()
-{
-	if(is_version_at_least(2, 0))
-	{
-		glBindAttribLocation = reinterpret_cast<PFNGLBINDATTRIBLOCATIONARBPROC>(get_proc_address("glBindAttribLocation"));
-		glDisableVertexAttribArray = reinterpret_cast<PFNGLDISABLEVERTEXATTRIBARRAYARBPROC>(get_proc_address("glDisableVertexAttribArray"));
-		glEnableVertexAttribArray = reinterpret_cast<PFNGLENABLEVERTEXATTRIBARRAYARBPROC>(get_proc_address("glEnableVertexAttribArray"));
-		glGetActiveAttrib = reinterpret_cast<PFNGLGETACTIVEATTRIBARBPROC>(get_proc_address("glGetActiveAttrib"));
-		glGetAttribLocation = reinterpret_cast<PFNGLGETATTRIBLOCATIONARBPROC>(get_proc_address("glGetAttribLocation"));
-		glGetVertexAttribPointerv = reinterpret_cast<PFNGLGETVERTEXATTRIBPOINTERVARBPROC>(get_proc_address("glGetVertexAttribPointerv"));
-		glGetVertexAttribdv = reinterpret_cast<PFNGLGETVERTEXATTRIBDVARBPROC>(get_proc_address("glGetVertexAttribdv"));
-		glGetVertexAttribfv = reinterpret_cast<PFNGLGETVERTEXATTRIBFVARBPROC>(get_proc_address("glGetVertexAttribfv"));
-		glGetVertexAttribiv = reinterpret_cast<PFNGLGETVERTEXATTRIBIVARBPROC>(get_proc_address("glGetVertexAttribiv"));
-		glVertexAttrib1d = reinterpret_cast<PFNGLVERTEXATTRIB1DARBPROC>(get_proc_address("glVertexAttrib1d"));
-		glVertexAttrib1dv = reinterpret_cast<PFNGLVERTEXATTRIB1DVARBPROC>(get_proc_address("glVertexAttrib1dv"));
-		glVertexAttrib1f = reinterpret_cast<PFNGLVERTEXATTRIB1FARBPROC>(get_proc_address("glVertexAttrib1f"));
-		glVertexAttrib1fv = reinterpret_cast<PFNGLVERTEXATTRIB1FVARBPROC>(get_proc_address("glVertexAttrib1fv"));
-		glVertexAttrib1s = reinterpret_cast<PFNGLVERTEXATTRIB1SARBPROC>(get_proc_address("glVertexAttrib1s"));
-		glVertexAttrib1sv = reinterpret_cast<PFNGLVERTEXATTRIB1SVARBPROC>(get_proc_address("glVertexAttrib1sv"));
-		glVertexAttrib2d = reinterpret_cast<PFNGLVERTEXATTRIB2DARBPROC>(get_proc_address("glVertexAttrib2d"));
-		glVertexAttrib2dv = reinterpret_cast<PFNGLVERTEXATTRIB2DVARBPROC>(get_proc_address("glVertexAttrib2dv"));
-		glVertexAttrib2f = reinterpret_cast<PFNGLVERTEXATTRIB2FARBPROC>(get_proc_address("glVertexAttrib2f"));
-		glVertexAttrib2fv = reinterpret_cast<PFNGLVERTEXATTRIB2FVARBPROC>(get_proc_address("glVertexAttrib2fv"));
-		glVertexAttrib2s = reinterpret_cast<PFNGLVERTEXATTRIB2SARBPROC>(get_proc_address("glVertexAttrib2s"));
-		glVertexAttrib2sv = reinterpret_cast<PFNGLVERTEXATTRIB2SVARBPROC>(get_proc_address("glVertexAttrib2sv"));
-		glVertexAttrib3d = reinterpret_cast<PFNGLVERTEXATTRIB3DARBPROC>(get_proc_address("glVertexAttrib3d"));
-		glVertexAttrib3dv = reinterpret_cast<PFNGLVERTEXATTRIB3DVARBPROC>(get_proc_address("glVertexAttrib3dv"));
-		glVertexAttrib3f = reinterpret_cast<PFNGLVERTEXATTRIB3FARBPROC>(get_proc_address("glVertexAttrib3f"));
-		glVertexAttrib3fv = reinterpret_cast<PFNGLVERTEXATTRIB3FVARBPROC>(get_proc_address("glVertexAttrib3fv"));
-		glVertexAttrib3s = reinterpret_cast<PFNGLVERTEXATTRIB3SARBPROC>(get_proc_address("glVertexAttrib3s"));
-		glVertexAttrib3sv = reinterpret_cast<PFNGLVERTEXATTRIB3SVARBPROC>(get_proc_address("glVertexAttrib3sv"));
-		glVertexAttrib4Nbv = reinterpret_cast<PFNGLVERTEXATTRIB4NBVARBPROC>(get_proc_address("glVertexAttrib4Nbv"));
-		glVertexAttrib4Niv = reinterpret_cast<PFNGLVERTEXATTRIB4NIVARBPROC>(get_proc_address("glVertexAttrib4Niv"));
-		glVertexAttrib4Nsv = reinterpret_cast<PFNGLVERTEXATTRIB4NSVARBPROC>(get_proc_address("glVertexAttrib4Nsv"));
-		glVertexAttrib4Nub = reinterpret_cast<PFNGLVERTEXATTRIB4NUBARBPROC>(get_proc_address("glVertexAttrib4Nub"));
-		glVertexAttrib4Nubv = reinterpret_cast<PFNGLVERTEXATTRIB4NUBVARBPROC>(get_proc_address("glVertexAttrib4Nubv"));
-		glVertexAttrib4Nuiv = reinterpret_cast<PFNGLVERTEXATTRIB4NUIVARBPROC>(get_proc_address("glVertexAttrib4Nuiv"));
-		glVertexAttrib4Nusv = reinterpret_cast<PFNGLVERTEXATTRIB4NUSVARBPROC>(get_proc_address("glVertexAttrib4Nusv"));
-		glVertexAttrib4bv = reinterpret_cast<PFNGLVERTEXATTRIB4BVARBPROC>(get_proc_address("glVertexAttrib4bv"));
-		glVertexAttrib4d = reinterpret_cast<PFNGLVERTEXATTRIB4DARBPROC>(get_proc_address("glVertexAttrib4d"));
-		glVertexAttrib4dv = reinterpret_cast<PFNGLVERTEXATTRIB4DVARBPROC>(get_proc_address("glVertexAttrib4dv"));
-		glVertexAttrib4f = reinterpret_cast<PFNGLVERTEXATTRIB4FARBPROC>(get_proc_address("glVertexAttrib4f"));
-		glVertexAttrib4fv = reinterpret_cast<PFNGLVERTEXATTRIB4FVARBPROC>(get_proc_address("glVertexAttrib4fv"));
-		glVertexAttrib4iv = reinterpret_cast<PFNGLVERTEXATTRIB4IVARBPROC>(get_proc_address("glVertexAttrib4iv"));
-		glVertexAttrib4s = reinterpret_cast<PFNGLVERTEXATTRIB4SARBPROC>(get_proc_address("glVertexAttrib4s"));
-		glVertexAttrib4sv = reinterpret_cast<PFNGLVERTEXATTRIB4SVARBPROC>(get_proc_address("glVertexAttrib4sv"));
-		glVertexAttrib4ubv = reinterpret_cast<PFNGLVERTEXATTRIB4UBVARBPROC>(get_proc_address("glVertexAttrib4ubv"));
-		glVertexAttrib4uiv = reinterpret_cast<PFNGLVERTEXATTRIB4UIVARBPROC>(get_proc_address("glVertexAttrib4uiv"));
-		glVertexAttrib4usv = reinterpret_cast<PFNGLVERTEXATTRIB4USVARBPROC>(get_proc_address("glVertexAttrib4usv"));
-		glVertexAttribPointer = reinterpret_cast<PFNGLVERTEXATTRIBPOINTERARBPROC>(get_proc_address("glVertexAttribPointer"));
-		return Extension::CORE;
-	}
-	if(is_supported("GL_ARB_vertex_shader"))
-	{
-		glBindAttribLocation = reinterpret_cast<PFNGLBINDATTRIBLOCATIONARBPROC>(get_proc_address("glBindAttribLocationARB"));
-		glDisableVertexAttribArray = reinterpret_cast<PFNGLDISABLEVERTEXATTRIBARRAYARBPROC>(get_proc_address("glDisableVertexAttribArrayARB"));
-		glEnableVertexAttribArray = reinterpret_cast<PFNGLENABLEVERTEXATTRIBARRAYARBPROC>(get_proc_address("glEnableVertexAttribArrayARB"));
-		glGetActiveAttrib = reinterpret_cast<PFNGLGETACTIVEATTRIBARBPROC>(get_proc_address("glGetActiveAttribARB"));
-		glGetAttribLocation = reinterpret_cast<PFNGLGETATTRIBLOCATIONARBPROC>(get_proc_address("glGetAttribLocationARB"));
-		glGetVertexAttribPointerv = reinterpret_cast<PFNGLGETVERTEXATTRIBPOINTERVARBPROC>(get_proc_address("glGetVertexAttribPointervARB"));
-		glGetVertexAttribdv = reinterpret_cast<PFNGLGETVERTEXATTRIBDVARBPROC>(get_proc_address("glGetVertexAttribdvARB"));
-		glGetVertexAttribfv = reinterpret_cast<PFNGLGETVERTEXATTRIBFVARBPROC>(get_proc_address("glGetVertexAttribfvARB"));
-		glGetVertexAttribiv = reinterpret_cast<PFNGLGETVERTEXATTRIBIVARBPROC>(get_proc_address("glGetVertexAttribivARB"));
-		glVertexAttrib1d = reinterpret_cast<PFNGLVERTEXATTRIB1DARBPROC>(get_proc_address("glVertexAttrib1dARB"));
-		glVertexAttrib1dv = reinterpret_cast<PFNGLVERTEXATTRIB1DVARBPROC>(get_proc_address("glVertexAttrib1dvARB"));
-		glVertexAttrib1f = reinterpret_cast<PFNGLVERTEXATTRIB1FARBPROC>(get_proc_address("glVertexAttrib1fARB"));
-		glVertexAttrib1fv = reinterpret_cast<PFNGLVERTEXATTRIB1FVARBPROC>(get_proc_address("glVertexAttrib1fvARB"));
-		glVertexAttrib1s = reinterpret_cast<PFNGLVERTEXATTRIB1SARBPROC>(get_proc_address("glVertexAttrib1sARB"));
-		glVertexAttrib1sv = reinterpret_cast<PFNGLVERTEXATTRIB1SVARBPROC>(get_proc_address("glVertexAttrib1svARB"));
-		glVertexAttrib2d = reinterpret_cast<PFNGLVERTEXATTRIB2DARBPROC>(get_proc_address("glVertexAttrib2dARB"));
-		glVertexAttrib2dv = reinterpret_cast<PFNGLVERTEXATTRIB2DVARBPROC>(get_proc_address("glVertexAttrib2dvARB"));
-		glVertexAttrib2f = reinterpret_cast<PFNGLVERTEXATTRIB2FARBPROC>(get_proc_address("glVertexAttrib2fARB"));
-		glVertexAttrib2fv = reinterpret_cast<PFNGLVERTEXATTRIB2FVARBPROC>(get_proc_address("glVertexAttrib2fvARB"));
-		glVertexAttrib2s = reinterpret_cast<PFNGLVERTEXATTRIB2SARBPROC>(get_proc_address("glVertexAttrib2sARB"));
-		glVertexAttrib2sv = reinterpret_cast<PFNGLVERTEXATTRIB2SVARBPROC>(get_proc_address("glVertexAttrib2svARB"));
-		glVertexAttrib3d = reinterpret_cast<PFNGLVERTEXATTRIB3DARBPROC>(get_proc_address("glVertexAttrib3dARB"));
-		glVertexAttrib3dv = reinterpret_cast<PFNGLVERTEXATTRIB3DVARBPROC>(get_proc_address("glVertexAttrib3dvARB"));
-		glVertexAttrib3f = reinterpret_cast<PFNGLVERTEXATTRIB3FARBPROC>(get_proc_address("glVertexAttrib3fARB"));
-		glVertexAttrib3fv = reinterpret_cast<PFNGLVERTEXATTRIB3FVARBPROC>(get_proc_address("glVertexAttrib3fvARB"));
-		glVertexAttrib3s = reinterpret_cast<PFNGLVERTEXATTRIB3SARBPROC>(get_proc_address("glVertexAttrib3sARB"));
-		glVertexAttrib3sv = reinterpret_cast<PFNGLVERTEXATTRIB3SVARBPROC>(get_proc_address("glVertexAttrib3svARB"));
-		glVertexAttrib4Nbv = reinterpret_cast<PFNGLVERTEXATTRIB4NBVARBPROC>(get_proc_address("glVertexAttrib4NbvARB"));
-		glVertexAttrib4Niv = reinterpret_cast<PFNGLVERTEXATTRIB4NIVARBPROC>(get_proc_address("glVertexAttrib4NivARB"));
-		glVertexAttrib4Nsv = reinterpret_cast<PFNGLVERTEXATTRIB4NSVARBPROC>(get_proc_address("glVertexAttrib4NsvARB"));
-		glVertexAttrib4Nub = reinterpret_cast<PFNGLVERTEXATTRIB4NUBARBPROC>(get_proc_address("glVertexAttrib4NubARB"));
-		glVertexAttrib4Nubv = reinterpret_cast<PFNGLVERTEXATTRIB4NUBVARBPROC>(get_proc_address("glVertexAttrib4NubvARB"));
-		glVertexAttrib4Nuiv = reinterpret_cast<PFNGLVERTEXATTRIB4NUIVARBPROC>(get_proc_address("glVertexAttrib4NuivARB"));
-		glVertexAttrib4Nusv = reinterpret_cast<PFNGLVERTEXATTRIB4NUSVARBPROC>(get_proc_address("glVertexAttrib4NusvARB"));
-		glVertexAttrib4bv = reinterpret_cast<PFNGLVERTEXATTRIB4BVARBPROC>(get_proc_address("glVertexAttrib4bvARB"));
-		glVertexAttrib4d = reinterpret_cast<PFNGLVERTEXATTRIB4DARBPROC>(get_proc_address("glVertexAttrib4dARB"));
-		glVertexAttrib4dv = reinterpret_cast<PFNGLVERTEXATTRIB4DVARBPROC>(get_proc_address("glVertexAttrib4dvARB"));
-		glVertexAttrib4f = reinterpret_cast<PFNGLVERTEXATTRIB4FARBPROC>(get_proc_address("glVertexAttrib4fARB"));
-		glVertexAttrib4fv = reinterpret_cast<PFNGLVERTEXATTRIB4FVARBPROC>(get_proc_address("glVertexAttrib4fvARB"));
-		glVertexAttrib4iv = reinterpret_cast<PFNGLVERTEXATTRIB4IVARBPROC>(get_proc_address("glVertexAttrib4ivARB"));
-		glVertexAttrib4s = reinterpret_cast<PFNGLVERTEXATTRIB4SARBPROC>(get_proc_address("glVertexAttrib4sARB"));
-		glVertexAttrib4sv = reinterpret_cast<PFNGLVERTEXATTRIB4SVARBPROC>(get_proc_address("glVertexAttrib4svARB"));
-		glVertexAttrib4ubv = reinterpret_cast<PFNGLVERTEXATTRIB4UBVARBPROC>(get_proc_address("glVertexAttrib4ubvARB"));
-		glVertexAttrib4uiv = reinterpret_cast<PFNGLVERTEXATTRIB4UIVARBPROC>(get_proc_address("glVertexAttrib4uivARB"));
-		glVertexAttrib4usv = reinterpret_cast<PFNGLVERTEXATTRIB4USVARBPROC>(get_proc_address("glVertexAttrib4usvARB"));
-		glVertexAttribPointer = reinterpret_cast<PFNGLVERTEXATTRIBPOINTERARBPROC>(get_proc_address("glVertexAttribPointerARB"));
-		return Extension::EXTENSION;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension ARB_vertex_shader("GL_ARB_vertex_shader", init_arb_vertex_shader);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/arb_vertex_shader.h b/source/arb_vertex_shader.h
deleted file mode 100644
index a6b5ffc1..00000000
--- a/source/arb_vertex_shader.h
+++ /dev/null
@@ -1,63 +0,0 @@
-#ifndef MSP_GL_ARB_VERTEX_SHADER_
-#define MSP_GL_ARB_VERTEX_SHADER_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern PFNGLBINDATTRIBLOCATIONARBPROC glBindAttribLocation;
-extern PFNGLDISABLEVERTEXATTRIBARRAYARBPROC glDisableVertexAttribArray;
-extern PFNGLENABLEVERTEXATTRIBARRAYARBPROC glEnableVertexAttribArray;
-extern PFNGLGETACTIVEATTRIBARBPROC glGetActiveAttrib;
-extern PFNGLGETATTRIBLOCATIONARBPROC glGetAttribLocation;
-extern PFNGLGETVERTEXATTRIBPOINTERVARBPROC glGetVertexAttribPointerv;
-extern PFNGLGETVERTEXATTRIBDVARBPROC glGetVertexAttribdv;
-extern PFNGLGETVERTEXATTRIBFVARBPROC glGetVertexAttribfv;
-extern PFNGLGETVERTEXATTRIBIVARBPROC glGetVertexAttribiv;
-extern PFNGLVERTEXATTRIB1DARBPROC glVertexAttrib1d;
-extern PFNGLVERTEXATTRIB1DVARBPROC glVertexAttrib1dv;
-extern PFNGLVERTEXATTRIB1FARBPROC glVertexAttrib1f;
-extern PFNGLVERTEXATTRIB1FVARBPROC glVertexAttrib1fv;
-extern PFNGLVERTEXATTRIB1SARBPROC glVertexAttrib1s;
-extern PFNGLVERTEXATTRIB1SVARBPROC glVertexAttrib1sv;
-extern PFNGLVERTEXATTRIB2DARBPROC glVertexAttrib2d;
-extern PFNGLVERTEXATTRIB2DVARBPROC glVertexAttrib2dv;
-extern PFNGLVERTEXATTRIB2FARBPROC glVertexAttrib2f;
-extern PFNGLVERTEXATTRIB2FVARBPROC glVertexAttrib2fv;
-extern PFNGLVERTEXATTRIB2SARBPROC glVertexAttrib2s;
-extern PFNGLVERTEXATTRIB2SVARBPROC glVertexAttrib2sv;
-extern PFNGLVERTEXATTRIB3DARBPROC glVertexAttrib3d;
-extern PFNGLVERTEXATTRIB3DVARBPROC glVertexAttrib3dv;
-extern PFNGLVERTEXATTRIB3FARBPROC glVertexAttrib3f;
-extern PFNGLVERTEXATTRIB3FVARBPROC glVertexAttrib3fv;
-extern PFNGLVERTEXATTRIB3SARBPROC glVertexAttrib3s;
-extern PFNGLVERTEXATTRIB3SVARBPROC glVertexAttrib3sv;
-extern PFNGLVERTEXATTRIB4NBVARBPROC glVertexAttrib4Nbv;
-extern PFNGLVERTEXATTRIB4NIVARBPROC glVertexAttrib4Niv;
-extern PFNGLVERTEXATTRIB4NSVARBPROC glVertexAttrib4Nsv;
-extern PFNGLVERTEXATTRIB4NUBARBPROC glVertexAttrib4Nub;
-extern PFNGLVERTEXATTRIB4NUBVARBPROC glVertexAttrib4Nubv;
-extern PFNGLVERTEXATTRIB4NUIVARBPROC glVertexAttrib4Nuiv;
-extern PFNGLVERTEXATTRIB4NUSVARBPROC glVertexAttrib4Nusv;
-extern PFNGLVERTEXATTRIB4BVARBPROC glVertexAttrib4bv;
-extern PFNGLVERTEXATTRIB4DARBPROC glVertexAttrib4d;
-extern PFNGLVERTEXATTRIB4DVARBPROC glVertexAttrib4dv;
-extern PFNGLVERTEXATTRIB4FARBPROC glVertexAttrib4f;
-extern PFNGLVERTEXATTRIB4FVARBPROC glVertexAttrib4fv;
-extern PFNGLVERTEXATTRIB4IVARBPROC glVertexAttrib4iv;
-extern PFNGLVERTEXATTRIB4SARBPROC glVertexAttrib4s;
-extern PFNGLVERTEXATTRIB4SVARBPROC glVertexAttrib4sv;
-extern PFNGLVERTEXATTRIB4UBVARBPROC glVertexAttrib4ubv;
-extern PFNGLVERTEXATTRIB4UIVARBPROC glVertexAttrib4uiv;
-extern PFNGLVERTEXATTRIB4USVARBPROC glVertexAttrib4usv;
-extern PFNGLVERTEXATTRIBPOINTERARBPROC glVertexAttribPointer;
-
-extern Extension ARB_vertex_shader;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/batch.cpp b/source/batch.cpp
index 8807b2c5..956fe130 100644
--- a/source/batch.cpp
+++ b/source/batch.cpp
@@ -1,9 +1,9 @@
+#include <msp/gl/extensions/ext_draw_range_elements.h>
+#include <msp/gl/extensions/nv_primitive_restart.h>
 #include "batch.h"
 #include "bindable.h"
 #include "buffer.h"
 #include "error.h"
-#include "ext_draw_range_elements.h"
-#include "nv_primitive_restart.h"
 #include "vertexarray.h"
 
 using namespace std;
diff --git a/source/blend.cpp b/source/blend.cpp
index cecd562d..9c87aeb5 100644
--- a/source/blend.cpp
+++ b/source/blend.cpp
@@ -1,6 +1,6 @@
+#include <msp/gl/extensions/ext_blend_minmax.h>
+#include <msp/gl/extensions/ext_blend_subtract.h>
 #include "blend.h"
-#include "ext_blend_minmax.h"
-#include "ext_blend_subtract.h"
 
 namespace Msp {
 namespace GL {
diff --git a/source/buffer.cpp b/source/buffer.cpp
index 5a0f4762..a502190f 100644
--- a/source/buffer.cpp
+++ b/source/buffer.cpp
@@ -1,7 +1,7 @@
 #include <stdexcept>
-#include "arb_pixel_buffer_object.h"
-#include "arb_uniform_buffer_object.h"
-#include "arb_vertex_buffer_object.h"
+#include <msp/gl/extensions/arb_pixel_buffer_object.h>
+#include <msp/gl/extensions/arb_uniform_buffer_object.h>
+#include <msp/gl/extensions/arb_vertex_buffer_object.h>
 #include "buffer.h"
 #include "misc.h"
 
diff --git a/source/ext_bgra.cpp b/source/ext_bgra.cpp
deleted file mode 100644
index d104717b..00000000
--- a/source/ext_bgra.cpp
+++ /dev/null
@@ -1,22 +0,0 @@
-#include "ext_bgra.h"
-
-namespace Msp {
-namespace GL {
-
-Extension::SupportLevel init_ext_bgra()
-{
-	if(is_version_at_least(1, 2))
-	{
-		return Extension::CORE;
-	}
-	if(is_supported("GL_EXT_bgra"))
-	{
-		return Extension::EXTENSION;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension EXT_bgra("GL_EXT_bgra", init_ext_bgra);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/ext_bgra.h b/source/ext_bgra.h
deleted file mode 100644
index b4ac19d9..00000000
--- a/source/ext_bgra.h
+++ /dev/null
@@ -1,16 +0,0 @@
-#ifndef MSP_GL_EXT_BGRA_
-#define MSP_GL_EXT_BGRA_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern Extension EXT_bgra;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/ext_blend_minmax.cpp b/source/ext_blend_minmax.cpp
deleted file mode 100644
index 3db30bfb..00000000
--- a/source/ext_blend_minmax.cpp
+++ /dev/null
@@ -1,26 +0,0 @@
-#include "ext_blend_minmax.h"
-
-namespace Msp {
-namespace GL {
-
-PFNGLBLENDEQUATIONEXTPROC glBlendEquation = 0;
-
-Extension::SupportLevel init_ext_blend_minmax()
-{
-	if(is_version_at_least(1, 2))
-	{
-		glBlendEquation = reinterpret_cast<PFNGLBLENDEQUATIONEXTPROC>(get_proc_address("glBlendEquation"));
-		return Extension::CORE;
-	}
-	if(is_supported("GL_EXT_blend_minmax"))
-	{
-		glBlendEquation = reinterpret_cast<PFNGLBLENDEQUATIONEXTPROC>(get_proc_address("glBlendEquationEXT"));
-		return Extension::EXTENSION;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension EXT_blend_minmax("GL_EXT_blend_minmax", init_ext_blend_minmax);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/ext_blend_minmax.h b/source/ext_blend_minmax.h
deleted file mode 100644
index a2d3ff34..00000000
--- a/source/ext_blend_minmax.h
+++ /dev/null
@@ -1,18 +0,0 @@
-#ifndef MSP_GL_EXT_BLEND_MINMAX_
-#define MSP_GL_EXT_BLEND_MINMAX_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern PFNGLBLENDEQUATIONEXTPROC glBlendEquation;
-
-extern Extension EXT_blend_minmax;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/ext_blend_subtract.cpp b/source/ext_blend_subtract.cpp
deleted file mode 100644
index f15f3f50..00000000
--- a/source/ext_blend_subtract.cpp
+++ /dev/null
@@ -1,22 +0,0 @@
-#include "ext_blend_subtract.h"
-
-namespace Msp {
-namespace GL {
-
-Extension::SupportLevel init_ext_blend_subtract()
-{
-	if(is_version_at_least(1, 2))
-	{
-		return Extension::CORE;
-	}
-	if(is_supported("GL_EXT_blend_subtract"))
-	{
-		return Extension::EXTENSION;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension EXT_blend_subtract("GL_EXT_blend_subtract", init_ext_blend_subtract);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/ext_blend_subtract.h b/source/ext_blend_subtract.h
deleted file mode 100644
index 243d5301..00000000
--- a/source/ext_blend_subtract.h
+++ /dev/null
@@ -1,16 +0,0 @@
-#ifndef MSP_GL_EXT_BLEND_SUBTRACT_
-#define MSP_GL_EXT_BLEND_SUBTRACT_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern Extension EXT_blend_subtract;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/ext_draw_range_elements.cpp b/source/ext_draw_range_elements.cpp
deleted file mode 100644
index 95af7b23..00000000
--- a/source/ext_draw_range_elements.cpp
+++ /dev/null
@@ -1,26 +0,0 @@
-#include "ext_draw_range_elements.h"
-
-namespace Msp {
-namespace GL {
-
-PFNGLDRAWRANGEELEMENTSEXTPROC glDrawRangeElements = 0;
-
-Extension::SupportLevel init_ext_draw_range_elements()
-{
-	if(is_version_at_least(1, 2))
-	{
-		glDrawRangeElements = reinterpret_cast<PFNGLDRAWRANGEELEMENTSEXTPROC>(get_proc_address("glDrawRangeElements"));
-		return Extension::CORE;
-	}
-	if(is_supported("GL_EXT_draw_range_elements"))
-	{
-		glDrawRangeElements = reinterpret_cast<PFNGLDRAWRANGEELEMENTSEXTPROC>(get_proc_address("glDrawRangeElementsEXT"));
-		return Extension::EXTENSION;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension EXT_draw_range_elements("GL_EXT_draw_range_elements", init_ext_draw_range_elements);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/ext_draw_range_elements.h b/source/ext_draw_range_elements.h
deleted file mode 100644
index dea955f4..00000000
--- a/source/ext_draw_range_elements.h
+++ /dev/null
@@ -1,18 +0,0 @@
-#ifndef MSP_GL_EXT_DRAW_RANGE_ELEMENTS_
-#define MSP_GL_EXT_DRAW_RANGE_ELEMENTS_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern PFNGLDRAWRANGEELEMENTSEXTPROC glDrawRangeElements;
-
-extern Extension EXT_draw_range_elements;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/ext_framebuffer_blit.cpp b/source/ext_framebuffer_blit.cpp
deleted file mode 100644
index 6fec8a68..00000000
--- a/source/ext_framebuffer_blit.cpp
+++ /dev/null
@@ -1,26 +0,0 @@
-#include "ext_framebuffer_blit.h"
-
-namespace Msp {
-namespace GL {
-
-PFNGLBLITFRAMEBUFFEREXTPROC glBlitFramebuffer = 0;
-
-Extension::SupportLevel init_ext_framebuffer_blit()
-{
-	if(is_version_at_least(3, 0) || is_supported("GL_ARB_framebuffer_object"))
-	{
-		glBlitFramebuffer = reinterpret_cast<PFNGLBLITFRAMEBUFFEREXTPROC>(get_proc_address("glBlitFramebuffer"));
-		return Extension::CORE;
-	}
-	if(is_supported("GL_EXT_framebuffer_blit"))
-	{
-		glBlitFramebuffer = reinterpret_cast<PFNGLBLITFRAMEBUFFEREXTPROC>(get_proc_address("glBlitFramebufferEXT"));
-		return Extension::EXTENSION;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension EXT_framebuffer_blit("GL_EXT_framebuffer_blit", init_ext_framebuffer_blit);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/ext_framebuffer_blit.h b/source/ext_framebuffer_blit.h
deleted file mode 100644
index 54197692..00000000
--- a/source/ext_framebuffer_blit.h
+++ /dev/null
@@ -1,18 +0,0 @@
-#ifndef MSP_GL_EXT_FRAMEBUFFER_BLIT_
-#define MSP_GL_EXT_FRAMEBUFFER_BLIT_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern PFNGLBLITFRAMEBUFFEREXTPROC glBlitFramebuffer;
-
-extern Extension EXT_framebuffer_blit;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/ext_framebuffer_multisample.cpp b/source/ext_framebuffer_multisample.cpp
deleted file mode 100644
index dd733e49..00000000
--- a/source/ext_framebuffer_multisample.cpp
+++ /dev/null
@@ -1,26 +0,0 @@
-#include "ext_framebuffer_multisample.h"
-
-namespace Msp {
-namespace GL {
-
-PFNGLRENDERBUFFERSTORAGEMULTISAMPLEEXTPROC glRenderbufferStorageMultisample = 0;
-
-Extension::SupportLevel init_ext_framebuffer_multisample()
-{
-	if(is_version_at_least(3, 0) || is_supported("GL_ARB_framebuffer_object"))
-	{
-		glRenderbufferStorageMultisample = reinterpret_cast<PFNGLRENDERBUFFERSTORAGEMULTISAMPLEEXTPROC>(get_proc_address("glRenderbufferStorageMultisample"));
-		return Extension::CORE;
-	}
-	if(is_supported("GL_EXT_framebuffer_multisample"))
-	{
-		glRenderbufferStorageMultisample = reinterpret_cast<PFNGLRENDERBUFFERSTORAGEMULTISAMPLEEXTPROC>(get_proc_address("glRenderbufferStorageMultisampleEXT"));
-		return Extension::EXTENSION;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension EXT_framebuffer_multisample("GL_EXT_framebuffer_multisample", init_ext_framebuffer_multisample);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/ext_framebuffer_multisample.h b/source/ext_framebuffer_multisample.h
deleted file mode 100644
index 7d2f20f5..00000000
--- a/source/ext_framebuffer_multisample.h
+++ /dev/null
@@ -1,18 +0,0 @@
-#ifndef MSP_GL_EXT_FRAMEBUFFER_MULTISAMPLE_
-#define MSP_GL_EXT_FRAMEBUFFER_MULTISAMPLE_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern PFNGLRENDERBUFFERSTORAGEMULTISAMPLEEXTPROC glRenderbufferStorageMultisample;
-
-extern Extension EXT_framebuffer_multisample;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/ext_framebuffer_object.cpp b/source/ext_framebuffer_object.cpp
deleted file mode 100644
index a89b5743..00000000
--- a/source/ext_framebuffer_object.cpp
+++ /dev/null
@@ -1,74 +0,0 @@
-#include "ext_framebuffer_object.h"
-
-namespace Msp {
-namespace GL {
-
-PFNGLBINDFRAMEBUFFEREXTPROC glBindFramebuffer = 0;
-PFNGLBINDRENDERBUFFEREXTPROC glBindRenderbuffer = 0;
-PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC glCheckFramebufferStatus = 0;
-PFNGLDELETEFRAMEBUFFERSEXTPROC glDeleteFramebuffers = 0;
-PFNGLDELETERENDERBUFFERSEXTPROC glDeleteRenderbuffers = 0;
-PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC glFramebufferRenderbuffer = 0;
-PFNGLFRAMEBUFFERTEXTURE1DEXTPROC glFramebufferTexture1D = 0;
-PFNGLFRAMEBUFFERTEXTURE2DEXTPROC glFramebufferTexture2D = 0;
-PFNGLFRAMEBUFFERTEXTURE3DEXTPROC glFramebufferTexture3D = 0;
-PFNGLGENFRAMEBUFFERSEXTPROC glGenFramebuffers = 0;
-PFNGLGENRENDERBUFFERSEXTPROC glGenRenderbuffers = 0;
-PFNGLGENERATEMIPMAPEXTPROC glGenerateMipmap = 0;
-PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVEXTPROC glGetFramebufferAttachmentParameteriv = 0;
-PFNGLGETRENDERBUFFERPARAMETERIVEXTPROC glGetRenderbufferParameteriv = 0;
-PFNGLISFRAMEBUFFEREXTPROC glIsFramebuffer = 0;
-PFNGLISRENDERBUFFEREXTPROC glIsRenderbuffer = 0;
-PFNGLRENDERBUFFERSTORAGEEXTPROC glRenderbufferStorage = 0;
-
-Extension::SupportLevel init_ext_framebuffer_object()
-{
-	if(is_version_at_least(3, 0) || is_supported("GL_ARB_framebuffer_object"))
-	{
-		glBindFramebuffer = reinterpret_cast<PFNGLBINDFRAMEBUFFEREXTPROC>(get_proc_address("glBindFramebuffer"));
-		glBindRenderbuffer = reinterpret_cast<PFNGLBINDRENDERBUFFEREXTPROC>(get_proc_address("glBindRenderbuffer"));
-		glCheckFramebufferStatus = reinterpret_cast<PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC>(get_proc_address("glCheckFramebufferStatus"));
-		glDeleteFramebuffers = reinterpret_cast<PFNGLDELETEFRAMEBUFFERSEXTPROC>(get_proc_address("glDeleteFramebuffers"));
-		glDeleteRenderbuffers = reinterpret_cast<PFNGLDELETERENDERBUFFERSEXTPROC>(get_proc_address("glDeleteRenderbuffers"));
-		glFramebufferRenderbuffer = reinterpret_cast<PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC>(get_proc_address("glFramebufferRenderbuffer"));
-		glFramebufferTexture1D = reinterpret_cast<PFNGLFRAMEBUFFERTEXTURE1DEXTPROC>(get_proc_address("glFramebufferTexture1D"));
-		glFramebufferTexture2D = reinterpret_cast<PFNGLFRAMEBUFFERTEXTURE2DEXTPROC>(get_proc_address("glFramebufferTexture2D"));
-		glFramebufferTexture3D = reinterpret_cast<PFNGLFRAMEBUFFERTEXTURE3DEXTPROC>(get_proc_address("glFramebufferTexture3D"));
-		glGenFramebuffers = reinterpret_cast<PFNGLGENFRAMEBUFFERSEXTPROC>(get_proc_address("glGenFramebuffers"));
-		glGenRenderbuffers = reinterpret_cast<PFNGLGENRENDERBUFFERSEXTPROC>(get_proc_address("glGenRenderbuffers"));
-		glGenerateMipmap = reinterpret_cast<PFNGLGENERATEMIPMAPEXTPROC>(get_proc_address("glGenerateMipmap"));
-		glGetFramebufferAttachmentParameteriv = reinterpret_cast<PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVEXTPROC>(get_proc_address("glGetFramebufferAttachmentParameteriv"));
-		glGetRenderbufferParameteriv = reinterpret_cast<PFNGLGETRENDERBUFFERPARAMETERIVEXTPROC>(get_proc_address("glGetRenderbufferParameteriv"));
-		glIsFramebuffer = reinterpret_cast<PFNGLISFRAMEBUFFEREXTPROC>(get_proc_address("glIsFramebuffer"));
-		glIsRenderbuffer = reinterpret_cast<PFNGLISRENDERBUFFEREXTPROC>(get_proc_address("glIsRenderbuffer"));
-		glRenderbufferStorage = reinterpret_cast<PFNGLRENDERBUFFERSTORAGEEXTPROC>(get_proc_address("glRenderbufferStorage"));
-		return Extension::CORE;
-	}
-	if(is_supported("GL_EXT_framebuffer_object"))
-	{
-		glBindFramebuffer = reinterpret_cast<PFNGLBINDFRAMEBUFFEREXTPROC>(get_proc_address("glBindFramebufferEXT"));
-		glBindRenderbuffer = reinterpret_cast<PFNGLBINDRENDERBUFFEREXTPROC>(get_proc_address("glBindRenderbufferEXT"));
-		glCheckFramebufferStatus = reinterpret_cast<PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC>(get_proc_address("glCheckFramebufferStatusEXT"));
-		glDeleteFramebuffers = reinterpret_cast<PFNGLDELETEFRAMEBUFFERSEXTPROC>(get_proc_address("glDeleteFramebuffersEXT"));
-		glDeleteRenderbuffers = reinterpret_cast<PFNGLDELETERENDERBUFFERSEXTPROC>(get_proc_address("glDeleteRenderbuffersEXT"));
-		glFramebufferRenderbuffer = reinterpret_cast<PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC>(get_proc_address("glFramebufferRenderbufferEXT"));
-		glFramebufferTexture1D = reinterpret_cast<PFNGLFRAMEBUFFERTEXTURE1DEXTPROC>(get_proc_address("glFramebufferTexture1DEXT"));
-		glFramebufferTexture2D = reinterpret_cast<PFNGLFRAMEBUFFERTEXTURE2DEXTPROC>(get_proc_address("glFramebufferTexture2DEXT"));
-		glFramebufferTexture3D = reinterpret_cast<PFNGLFRAMEBUFFERTEXTURE3DEXTPROC>(get_proc_address("glFramebufferTexture3DEXT"));
-		glGenFramebuffers = reinterpret_cast<PFNGLGENFRAMEBUFFERSEXTPROC>(get_proc_address("glGenFramebuffersEXT"));
-		glGenRenderbuffers = reinterpret_cast<PFNGLGENRENDERBUFFERSEXTPROC>(get_proc_address("glGenRenderbuffersEXT"));
-		glGenerateMipmap = reinterpret_cast<PFNGLGENERATEMIPMAPEXTPROC>(get_proc_address("glGenerateMipmapEXT"));
-		glGetFramebufferAttachmentParameteriv = reinterpret_cast<PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVEXTPROC>(get_proc_address("glGetFramebufferAttachmentParameterivEXT"));
-		glGetRenderbufferParameteriv = reinterpret_cast<PFNGLGETRENDERBUFFERPARAMETERIVEXTPROC>(get_proc_address("glGetRenderbufferParameterivEXT"));
-		glIsFramebuffer = reinterpret_cast<PFNGLISFRAMEBUFFEREXTPROC>(get_proc_address("glIsFramebufferEXT"));
-		glIsRenderbuffer = reinterpret_cast<PFNGLISRENDERBUFFEREXTPROC>(get_proc_address("glIsRenderbufferEXT"));
-		glRenderbufferStorage = reinterpret_cast<PFNGLRENDERBUFFERSTORAGEEXTPROC>(get_proc_address("glRenderbufferStorageEXT"));
-		return Extension::EXTENSION;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension EXT_framebuffer_object("GL_EXT_framebuffer_object", init_ext_framebuffer_object);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/ext_framebuffer_object.h b/source/ext_framebuffer_object.h
deleted file mode 100644
index be5ea10d..00000000
--- a/source/ext_framebuffer_object.h
+++ /dev/null
@@ -1,34 +0,0 @@
-#ifndef MSP_GL_EXT_FRAMEBUFFER_OBJECT_
-#define MSP_GL_EXT_FRAMEBUFFER_OBJECT_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern PFNGLBINDFRAMEBUFFEREXTPROC glBindFramebuffer;
-extern PFNGLBINDRENDERBUFFEREXTPROC glBindRenderbuffer;
-extern PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC glCheckFramebufferStatus;
-extern PFNGLDELETEFRAMEBUFFERSEXTPROC glDeleteFramebuffers;
-extern PFNGLDELETERENDERBUFFERSEXTPROC glDeleteRenderbuffers;
-extern PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC glFramebufferRenderbuffer;
-extern PFNGLFRAMEBUFFERTEXTURE1DEXTPROC glFramebufferTexture1D;
-extern PFNGLFRAMEBUFFERTEXTURE2DEXTPROC glFramebufferTexture2D;
-extern PFNGLFRAMEBUFFERTEXTURE3DEXTPROC glFramebufferTexture3D;
-extern PFNGLGENFRAMEBUFFERSEXTPROC glGenFramebuffers;
-extern PFNGLGENRENDERBUFFERSEXTPROC glGenRenderbuffers;
-extern PFNGLGENERATEMIPMAPEXTPROC glGenerateMipmap;
-extern PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVEXTPROC glGetFramebufferAttachmentParameteriv;
-extern PFNGLGETRENDERBUFFERPARAMETERIVEXTPROC glGetRenderbufferParameteriv;
-extern PFNGLISFRAMEBUFFEREXTPROC glIsFramebuffer;
-extern PFNGLISRENDERBUFFEREXTPROC glIsRenderbuffer;
-extern PFNGLRENDERBUFFERSTORAGEEXTPROC glRenderbufferStorage;
-
-extern Extension EXT_framebuffer_object;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/ext_texture3d.cpp b/source/ext_texture3d.cpp
deleted file mode 100644
index d3e3c5f5..00000000
--- a/source/ext_texture3d.cpp
+++ /dev/null
@@ -1,29 +0,0 @@
-#include "ext_texture3d.h"
-
-namespace Msp {
-namespace GL {
-
-PFNGLTEXIMAGE3DEXTPROC glTexImage3D = 0;
-PFNGLTEXSUBIMAGE3DEXTPROC glTexSubImage3D = 0;
-
-Extension::SupportLevel init_ext_texture3d()
-{
-	if(is_version_at_least(1, 2))
-	{
-		glTexImage3D = reinterpret_cast<PFNGLTEXIMAGE3DEXTPROC>(get_proc_address("glTexImage3D"));
-		glTexSubImage3D = reinterpret_cast<PFNGLTEXSUBIMAGE3DEXTPROC>(get_proc_address("glTexSubImage3D"));
-		return Extension::CORE;
-	}
-	if(is_supported("GL_EXT_texture3D"))
-	{
-		glTexImage3D = reinterpret_cast<PFNGLTEXIMAGE3DEXTPROC>(get_proc_address("glTexImage3DEXT"));
-		glTexSubImage3D = reinterpret_cast<PFNGLTEXSUBIMAGE3DEXTPROC>(get_proc_address("glTexSubImage3DEXT"));
-		return Extension::EXTENSION;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension EXT_texture3D("GL_EXT_texture3D", init_ext_texture3d);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/ext_texture3d.h b/source/ext_texture3d.h
deleted file mode 100644
index c6689108..00000000
--- a/source/ext_texture3d.h
+++ /dev/null
@@ -1,19 +0,0 @@
-#ifndef MSP_GL_EXT_TEXTURE3D_
-#define MSP_GL_EXT_TEXTURE3D_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern PFNGLTEXIMAGE3DEXTPROC glTexImage3D;
-extern PFNGLTEXSUBIMAGE3DEXTPROC glTexSubImage3D;
-
-extern Extension EXT_texture3D;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/ext_texture_filter_anisotropic.cpp b/source/ext_texture_filter_anisotropic.cpp
deleted file mode 100644
index e93249b0..00000000
--- a/source/ext_texture_filter_anisotropic.cpp
+++ /dev/null
@@ -1,18 +0,0 @@
-#include "ext_texture_filter_anisotropic.h"
-
-namespace Msp {
-namespace GL {
-
-Extension::SupportLevel init_ext_texture_filter_anisotropic()
-{
-	if(is_supported("GL_EXT_texture_filter_anisotropic"))
-	{
-		return Extension::EXTENSION;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension EXT_texture_filter_anisotropic("GL_EXT_texture_filter_anisotropic", init_ext_texture_filter_anisotropic);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/ext_texture_filter_anisotropic.h b/source/ext_texture_filter_anisotropic.h
deleted file mode 100644
index be7f5b14..00000000
--- a/source/ext_texture_filter_anisotropic.h
+++ /dev/null
@@ -1,16 +0,0 @@
-#ifndef MSP_GL_EXT_TEXTURE_FILTER_ANISOTROPIC_
-#define MSP_GL_EXT_TEXTURE_FILTER_ANISOTROPIC_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern Extension EXT_texture_filter_anisotropic;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/framebuffer.cpp b/source/framebuffer.cpp
index 4d6c1752..8e8be663 100644
--- a/source/framebuffer.cpp
+++ b/source/framebuffer.cpp
@@ -1,7 +1,7 @@
-#include "arb_draw_buffers.h"
+#include <msp/gl/extensions/arb_draw_buffers.h>
+#include <msp/gl/extensions/ext_framebuffer_blit.h>
+#include <msp/gl/extensions/ext_framebuffer_object.h>
 #include "error.h"
-#include "ext_framebuffer_blit.h"
-#include "ext_framebuffer_object.h"
 #include "framebuffer.h"
 #include "misc.h"
 #include "renderbuffer.h"
diff --git a/source/nv_primitive_restart.cpp b/source/nv_primitive_restart.cpp
deleted file mode 100644
index ed5a2664..00000000
--- a/source/nv_primitive_restart.cpp
+++ /dev/null
@@ -1,23 +0,0 @@
-#include "nv_primitive_restart.h"
-
-namespace Msp {
-namespace GL {
-
-PFNGLPRIMITIVERESTARTINDEXNVPROC glPrimitiveRestartIndexNV = 0;
-PFNGLPRIMITIVERESTARTNVPROC glPrimitiveRestartNV = 0;
-
-Extension::SupportLevel init_nv_primitive_restart()
-{
-	if(is_supported("GL_NV_primitive_restart"))
-	{
-		glPrimitiveRestartIndexNV = reinterpret_cast<PFNGLPRIMITIVERESTARTINDEXNVPROC>(get_proc_address("glPrimitiveRestartIndexNV"));
-		glPrimitiveRestartNV = reinterpret_cast<PFNGLPRIMITIVERESTARTNVPROC>(get_proc_address("glPrimitiveRestartNV"));
-		return Extension::EXTENSION;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension NV_primitive_restart("GL_NV_primitive_restart", init_nv_primitive_restart);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/nv_primitive_restart.h b/source/nv_primitive_restart.h
deleted file mode 100644
index 87358435..00000000
--- a/source/nv_primitive_restart.h
+++ /dev/null
@@ -1,19 +0,0 @@
-#ifndef MSP_GL_NV_PRIMITIVE_RESTART_
-#define MSP_GL_NV_PRIMITIVE_RESTART_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern PFNGLPRIMITIVERESTARTINDEXNVPROC glPrimitiveRestartIndexNV;
-extern PFNGLPRIMITIVERESTARTNVPROC glPrimitiveRestartNV;
-
-extern Extension NV_primitive_restart;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/pixelformat.cpp b/source/pixelformat.cpp
index 4b3dade1..836012f9 100644
--- a/source/pixelformat.cpp
+++ b/source/pixelformat.cpp
@@ -1,6 +1,6 @@
+#include <msp/gl/extensions/arb_texture_float.h>
+#include <msp/gl/extensions/ext_bgra.h>
 #include <msp/strings/format.h>
-#include "arb_texture_float.h"
-#include "ext_bgra.h"
 #include "pixelformat.h"
 
 using namespace std;
diff --git a/source/program.cpp b/source/program.cpp
index 95102fe9..61610493 100644
--- a/source/program.cpp
+++ b/source/program.cpp
@@ -2,10 +2,10 @@
 #include <cstring>
 #include <msp/core/hash.h>
 #include <msp/core/maputils.h>
+#include <msp/gl/extensions/arb_shader_objects.h>
+#include <msp/gl/extensions/arb_uniform_buffer_object.h>
+#include <msp/gl/extensions/arb_vertex_shader.h>
 #include <msp/strings/format.h>
-#include "arb_shader_objects.h"
-#include "arb_uniform_buffer_object.h"
-#include "arb_vertex_shader.h"
 #include "buffer.h"
 #include "error.h"
 #include "program.h"
diff --git a/source/programdata.cpp b/source/programdata.cpp
index 69fcdbe0..943dcfaf 100644
--- a/source/programdata.cpp
+++ b/source/programdata.cpp
@@ -1,4 +1,4 @@
-#include "arb_shader_objects.h"
+#include <msp/gl/extensions/arb_shader_objects.h>
 #include "buffer.h"
 #include "color.h"
 #include "error.h"
diff --git a/source/renderbuffer.cpp b/source/renderbuffer.cpp
index 8f0b582a..89b25500 100644
--- a/source/renderbuffer.cpp
+++ b/source/renderbuffer.cpp
@@ -1,5 +1,5 @@
-#include "ext_framebuffer_multisample.h"
-#include "ext_framebuffer_object.h"
+#include <msp/gl/extensions/ext_framebuffer_multisample.h>
+#include <msp/gl/extensions/ext_framebuffer_object.h>
 #include "renderbuffer.h"
 
 namespace Msp {
diff --git a/source/sgis_generate_mipmap.cpp b/source/sgis_generate_mipmap.cpp
deleted file mode 100644
index 50805172..00000000
--- a/source/sgis_generate_mipmap.cpp
+++ /dev/null
@@ -1,18 +0,0 @@
-#include "sgis_generate_mipmap.h"
-
-namespace Msp {
-namespace GL {
-
-Extension::SupportLevel init_sgis_generate_mipmap()
-{
-	if(is_supported("GL_SGIS_generate_mipmap"))
-	{
-		return Extension::EXTENSION;
-	}
-	return Extension::UNSUPPORTED;
-}
-
-Extension SGIS_generate_mipmap("GL_SGIS_generate_mipmap", init_sgis_generate_mipmap);
-
-} // namespace GL
-} // namespace Msp
diff --git a/source/sgis_generate_mipmap.h b/source/sgis_generate_mipmap.h
deleted file mode 100644
index 86d8802b..00000000
--- a/source/sgis_generate_mipmap.h
+++ /dev/null
@@ -1,16 +0,0 @@
-#ifndef MSP_GL_SGIS_GENERATE_MIPMAP_
-#define MSP_GL_SGIS_GENERATE_MIPMAP_
-
-#include "extension.h"
-#include "gl.h"
-#include <GL/glext.h>
-
-namespace Msp {
-namespace GL {
-
-extern Extension SGIS_generate_mipmap;
-
-} // namespace GL
-} // namespace Msp
-
-#endif
diff --git a/source/shader.cpp b/source/shader.cpp
index 0da1a6e9..a1c576d8 100644
--- a/source/shader.cpp
+++ b/source/shader.cpp
@@ -1,6 +1,6 @@
-#include "arb_fragment_shader.h"
-#include "arb_shader_objects.h"
-#include "arb_vertex_shader.h"
+#include <msp/gl/extensions/arb_fragment_shader.h>
+#include <msp/gl/extensions/arb_shader_objects.h>
+#include <msp/gl/extensions/arb_vertex_shader.h>
 #include "error.h"
 #include "shader.h"
 
diff --git a/source/texture.cpp b/source/texture.cpp
index e4d4ebf2..3bd1df67 100644
--- a/source/texture.cpp
+++ b/source/texture.cpp
@@ -1,7 +1,7 @@
+#include <msp/gl/extensions/ext_texture_filter_anisotropic.h>
+#include <msp/gl/extensions/sgis_generate_mipmap.h>
 #include <msp/strings/format.h>
 #include "error.h"
-#include "ext_texture_filter_anisotropic.h"
-#include "sgis_generate_mipmap.h"
 #include "texture.h"
 #include "texunit.h"
 
diff --git a/source/texture3d.cpp b/source/texture3d.cpp
index 95b96903..73c4b817 100644
--- a/source/texture3d.cpp
+++ b/source/texture3d.cpp
@@ -1,8 +1,8 @@
 #include <cmath>
+#include <msp/gl/extensions/ext_texture3d.h>
 #include <msp/graphics/image.h>
 #include "bindable.h"
 #include "error.h"
-#include "ext_texture3d.h"
 #include "texture3d.h"
 
 using namespace std;
diff --git a/source/texturecube.cpp b/source/texturecube.cpp
index ef9d2529..1b2193b3 100644
--- a/source/texturecube.cpp
+++ b/source/texturecube.cpp
@@ -1,4 +1,4 @@
-#include "arb_texture_cube_map.h"
+#include <msp/gl/extensions/arb_texture_cube_map.h>
 #include "bindable.h"
 #include "error.h"
 #include "texturecube.h"
diff --git a/source/texunit.cpp b/source/texunit.cpp
index 0a5f9bf3..aa52aed4 100644
--- a/source/texunit.cpp
+++ b/source/texunit.cpp
@@ -1,6 +1,6 @@
 #include <stdexcept>
-#include "arb_multitexture.h"
-#include "arb_vertex_shader.h"
+#include <msp/gl/extensions/arb_multitexture.h>
+#include <msp/gl/extensions/arb_vertex_shader.h>
 #include "gl.h"
 #include "texunit.h"
 
diff --git a/source/uniform.cpp b/source/uniform.cpp
index 943600e0..7ebfc3e0 100644
--- a/source/uniform.cpp
+++ b/source/uniform.cpp
@@ -1,4 +1,4 @@
-#include "arb_shader_objects.h"
+#include <msp/gl/extensions/arb_shader_objects.h>
 #include "uniform.h"
 
 namespace Msp {
diff --git a/source/vertexarray.cpp b/source/vertexarray.cpp
index 527052e9..5065f305 100644
--- a/source/vertexarray.cpp
+++ b/source/vertexarray.cpp
@@ -1,5 +1,5 @@
-#include "arb_multitexture.h"
-#include "arb_vertex_shader.h"
+#include <msp/gl/extensions/arb_multitexture.h>
+#include <msp/gl/extensions/arb_vertex_shader.h>
 #include "buffer.h"
 #include "error.h"
 #include "gl.h"