glsl: Don't allow redefining builtin functions on GLSL 1.00.
The spec text cited above says you can't, but only the GLSL 3.00 (redefine or overload) case was implemented. Fixes dEQP scoping.invalid.redefine_builtin_fragment/vertex. Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com> Tested-by: Matt Turner <mattst88@gmail.com>
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@ -5888,16 +5888,27 @@ ast_function::hir(exec_list *instructions,
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* "User code can overload the built-in functions but cannot redefine
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* them."
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*/
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if (state->es_shader && state->language_version >= 300) {
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if (state->es_shader) {
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/* Local shader has no exact candidates; check the built-ins. */
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_mesa_glsl_initialize_builtin_functions();
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if (_mesa_glsl_has_builtin_function(name)) {
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if (state->language_version >= 300 &&
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_mesa_glsl_has_builtin_function(name)) {
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YYLTYPE loc = this->get_location();
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_mesa_glsl_error(& loc, state,
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"A shader cannot redefine or overload built-in "
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"function `%s' in GLSL ES 3.00", name);
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return NULL;
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}
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if (state->language_version == 100) {
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ir_function_signature *sig =
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_mesa_glsl_find_builtin_function(state, name, &hir_parameters);
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if (sig && sig->is_builtin()) {
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_mesa_glsl_error(& loc, state,
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"A shader cannot redefine built-in "
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"function `%s' in GLSL ES 1.00", name);
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}
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}
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}
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/* Verify that this function's signature either doesn't match a previously
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