From 10eaa8bcbce1cd6d2e120e913f7abafde9675215 Mon Sep 17 00:00:00 2001
From: Kenneth Graunke <kenneth@whitecape.org>
Date: Tue, 7 Sep 2010 02:59:38 -0700
Subject: ast_to_hir: Mark arrays as lvalues in GLSL ES, but prohibit
assignment.
This allows them to be passed as out/inout parameters, but still
prevents them from being used as the target of an assignment. This is
per section 5.8 of the GLSL ES 1.00 specification.
---
src/glsl/ast_to_hir.cpp | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
(limited to 'src')
diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp
index 8322dbfdc2..3de6caac70 100644
--- a/src/glsl/ast_to_hir.cpp
+++ b/src/glsl/ast_to_hir.cpp
@@ -516,6 +516,12 @@ do_assignment(exec_list *instructions, struct _mesa_glsl_parse_state *state,
_mesa_glsl_error(& lhs_loc, state, "non-lvalue in assignment");
error_emitted = true;
}
+
+ if (state->es_shader && lhs->type->is_array()) {
+ _mesa_glsl_error(&lhs_loc, state, "whole array assignment is not "
+ "allowed in GLSL ES 1.00.");
+ error_emitted = true;
+ }
}
ir_rvalue *new_rhs = validate_assignment(state, lhs->type, rhs);
@@ -1624,7 +1630,7 @@ apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual,
qual_string);
}
- if (var->type->is_array() && (state->language_version >= 120)) {
+ if (var->type->is_array() && state->language_version != 110) {
var->array_lvalue = true;
}
}
--
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