X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Farb_uniform_buffer_object.cpp;h=9b224ffb607343fe01d5d7afb5d6aefe6ea90e24;hp=b788e03686cf3615968e391e8dd77ff3e2c16af0;hb=6afbace895a7bbcf216ab8e48280ea0303ab5892;hpb=485315ca65cb40f33253008a79b0933997bd74f5

diff --git a/source/arb_uniform_buffer_object.cpp b/source/arb_uniform_buffer_object.cpp
index b788e036..9b224ffb 100644
--- a/source/arb_uniform_buffer_object.cpp
+++ b/source/arb_uniform_buffer_object.cpp
@@ -1,31 +1,37 @@
-#include "extension.h"
 #include "arb_uniform_buffer_object.h"
 
 namespace Msp {
 namespace GL {
 
-PFNGLGETUNIFORMINDICESPROC glGetUniformIndices = 0;
-PFNGLGETACTIVEUNIFORMSIVPROC glGetActiveUniformsiv = 0;
+PFNGLBINDBUFFERBASEPROC glBindBufferBase = 0;
+PFNGLBINDBUFFERRANGEPROC glBindBufferRange = 0;
+PFNGLGETACTIVEUNIFORMBLOCKNAMEPROC glGetActiveUniformBlockName = 0;
+PFNGLGETACTIVEUNIFORMBLOCKIVPROC glGetActiveUniformBlockiv = 0;
 PFNGLGETACTIVEUNIFORMNAMEPROC glGetActiveUniformName = 0;
+PFNGLGETACTIVEUNIFORMSIVPROC glGetActiveUniformsiv = 0;
 PFNGLGETUNIFORMBLOCKINDEXPROC glGetUniformBlockIndex = 0;
-PFNGLGETACTIVEUNIFORMBLOCKIVPROC glGetActiveUniformBlockiv = 0;
-PFNGLGETACTIVEUNIFORMBLOCKNAMEPROC glGetActiveUniformBlockName = 0;
+PFNGLGETUNIFORMINDICESPROC glGetUniformIndices = 0;
 PFNGLUNIFORMBLOCKBINDINGPROC glUniformBlockBinding = 0;
-PFNGLBINDBUFFERBASEPROC glBindBufferBase = 0;
-PFNGLBINDBUFFERRANGEPROC glBindBufferRange = 0;
 
-void init_arb_uniform_buffer_object()
+Extension::SupportLevel init_arb_uniform_buffer_object()
 {
-	glGetUniformIndices = reinterpret_cast<PFNGLGETUNIFORMINDICESPROC>(get_proc_address("glGetUniformIndices"));
-	glGetActiveUniformsiv = reinterpret_cast<PFNGLGETACTIVEUNIFORMSIVPROC>(get_proc_address("glGetActiveUniformsiv"));
-	glGetActiveUniformName = reinterpret_cast<PFNGLGETACTIVEUNIFORMNAMEPROC>(get_proc_address("glGetActiveUniformName"));
-	glGetUniformBlockIndex = reinterpret_cast<PFNGLGETUNIFORMBLOCKINDEXPROC>(get_proc_address("glGetUniformBlockIndex"));
-	glGetActiveUniformBlockiv = reinterpret_cast<PFNGLGETACTIVEUNIFORMBLOCKIVPROC>(get_proc_address("glGetActiveUniformBlockiv"));
-	glGetActiveUniformBlockName = reinterpret_cast<PFNGLGETACTIVEUNIFORMBLOCKNAMEPROC>(get_proc_address("glGetActiveUniformBlockName"));
-	glUniformBlockBinding = reinterpret_cast<PFNGLUNIFORMBLOCKBINDINGPROC>(get_proc_address("glUniformBlockBinding"));
-	glBindBufferBase = reinterpret_cast<PFNGLBINDBUFFERBASEPROC>(get_proc_address("glBindBufferBase"));
-	glBindBufferRange = reinterpret_cast<PFNGLBINDBUFFERRANGEPROC>(get_proc_address("glBindBufferRange"));
+	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