• Andres Gomez's avatar
    arb_separate_shader_objects: remove misleading comments · 0a218e49
    Andres Gomez authored
    And also redefined built-ins that are not used.
    
    From Section 7.4.1 (Shader Interface Matching) of the OpenGL 4.60
    spec:
    
      " To use any built-in input or output in the gl_PerVertex block in
        separable program objects, shader code must redeclare that block
        prior to use. A separable program will fail to link if:
    
          * it contains multiple shaders of a single type with different
             redeclarations of this built-in block; or
    
          * any shader uses a built-in block member not found in the
            redeclaration of that block.
    
        There is one exception to this rule described below.
    
        As described above, an exact interface match requires matching
        built-in input and output blocks. At an interface between two
        non-fragment shader stages, the gl_PerVertex input and output
        blocks are considered to match if and only if the block members
        match exactly in name, type, qualification, and declaration order.
        At an interface involving the fragment shader stage, the presence
        or absence of any built-in output does not affect interface
        matching."
    Signed-off-by: Andres Gomez's avatarAndres Gomez <agomez@igalia.com>
    Reviewed-by: Tapani Pälli's avatarTapani Pälli <tapani.palli@intel.com>
    Reviewed-by: default avatarMartin Peres <martin.peres@linux.intel.com>
    0a218e49
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