gltut / Tut 12 Dynamic Range / Gamma Correction.cpp

Diff from to

Tut 12 Dynamic Range/Gamma Correction.cpp

 	GLuint lightBlock = glGetUniformBlockIndex(data.theProgram, "Light");
 	GLuint projectionBlock = glGetUniformBlockIndex(data.theProgram, "Projection");
-	glUniformBlockBinding(data.theProgram, materialBlock, g_materialBlockIndex);
+	if(materialBlock != GL_INVALID_INDEX) //Can be optimized out.
+		glUniformBlockBinding(data.theProgram, materialBlock, g_materialBlockIndex);
 	glUniformBlockBinding(data.theProgram, lightBlock, g_lightBlockIndex);
 	glUniformBlockBinding(data.theProgram, projectionBlock, g_projectionBlockIndex);
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