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-rw-r--r--src/glsl/ast_to_hir.cpp16
1 files changed, 14 insertions, 2 deletions
diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp
index 25ccdab27c0..28aff397757 100644
--- a/src/glsl/ast_to_hir.cpp
+++ b/src/glsl/ast_to_hir.cpp
@@ -3697,14 +3697,26 @@ ast_switch_statement::hir(exec_list *instructions,
/* Conditionally set fallthru state based on
* comparison of cached test expression value to case label.
*/
- ir_rvalue *const test_val = this->test_value->hir(instructions, state);
+ ir_rvalue *const label_rval = this->test_value->hir(instructions, state);
+ ir_constant *label_const = label_rval->constant_expression_value();
+
+ if (!label_const) {
+ YYLTYPE loc = this->test_value->get_location();
+
+ _mesa_glsl_error(& loc, state,
+ "switch statement case label must be a "
+ "constant expression");
+
+ /* Stuff a dummy value in to allow processing to continue. */
+ label_const = new(ctx) ir_constant(0);
+ }
ir_dereference_variable *deref_test_var =
new(ctx) ir_dereference_variable(state->switch_state.test_var);
ir_rvalue *const test_cond = new(ctx) ir_expression(ir_binop_all_equal,
glsl_type::bool_type,
- test_val,
+ label_const,
deref_test_var);
ir_assignment *set_fallthru_on_test =