glLinkProgram, glBindBufferBase, glBindBufferRange, glGetActiveUniformBlock
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glUniformBlockBinding: man3/glUniformBlockBinding.xml
Binding points for active uniform blocks are assigned using glUniformBlockBinding. Each of a program's active uniform blocks has a corresponding uniform buffer binding point. program is the name of a program object for which the command glLinkProgram has been issued in the past. If successful, glUniformBlockBinding specifies that program will use the data store of the buffer object bound to the binding point uniformBlockBinding to extract the values of the uniforms in the uniform block identified by uniformBlockIndex. When a program object is linked or re-linked, the uniform buffer object binding point assigned to each of its active uniform blocks is reset to zero.
glUniformBlockBinding is available only if the GL version is 3.1 or greater.