X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fextension.cpp;h=efa4b1a29c9fab1d820b5749217d02515fdf25e6;hb=08abb340625c6d281496095f2a664f27570c2b64;hp=d03616651b39e97c7937c9f9902d7108c11f7b89;hpb=f92c10f969a02e707a236cb364332bf079cdf4fc;p=libs%2Fgl.git

diff --git a/source/extension.cpp b/source/extension.cpp
index d0361665..efa4b1a2 100644
--- a/source/extension.cpp
+++ b/source/extension.cpp
@@ -80,11 +80,25 @@ bool is_supported(const string &ext)
 
 		string renderer = reinterpret_cast<const char *>(glGetString(GL_RENDERER));
 		if(renderer.find("Radeon")!=string::npos)
+		{
 			/* Radeon doesn't process NV_primitive_restart correctly and treats
 			the restart index as a normal element if the indices are stored in a
 			buffer. */
 			extensions.erase("GL_NV_primitive_restart");
 
+			/* AMD's uniform buffer objects only work with the core version of
+			shaders. */
+			if(!(get_gl_version()>=Version(2, 0)))
+				extensions.erase("GL_ARB_uniform_buffer_object");
+		}
+
+		if(const char *disable_ptr = getenv("MSPGL_DISABLE_EXTENSIONS"))
+		{
+			vector<string> disable = split(disable_ptr);
+			for(vector<string>::const_iterator i=disable.begin(); i!=disable.end(); ++i)
+				extensions.erase(*i);
+		}
+
 		init_done = true;
 	}
 
@@ -94,7 +108,16 @@ bool is_supported(const string &ext)
 inline Version _get_gl_version()
 {
 	string gl_ver = reinterpret_cast<const char *>(glGetString(GL_VERSION));
-	return Version(gl_ver.substr(0, gl_ver.find(' ')));
+	Version ver(gl_ver.substr(0, gl_ver.find(' ')));
+
+	if(const char *force_ver_ptr = getenv("MSPGL_FORCE_VERSION"))
+	{
+		Version force_ver(force_ver_ptr);
+		if(!(force_ver>=ver))
+			ver = force_ver;
+	}
+
+	return ver;
 }
 
 const Version &get_gl_version()
@@ -106,7 +129,16 @@ const Version &get_gl_version()
 inline Version _get_glsl_version()
 {
 	string glsl_ver = reinterpret_cast<const char *>(glGetString(GL_SHADING_LANGUAGE_VERSION));
-	return Version(glsl_ver.substr(0, glsl_ver.find(' ')));
+	Version ver(glsl_ver.substr(0, glsl_ver.find(' ')));
+
+	if(const char *force_ver_ptr = getenv("MSPGL_FORCE_GLSL_VERSION"))
+	{
+		Version force_ver(force_ver_ptr);
+		if(!(force_ver>=ver))
+			ver = force_ver;
+	}
+
+	return ver;
 }
 
 const Version &get_glsl_version()