meta: Fix compilation without FEATURE_EXT_transform_feedback

[mesa.git] / src / glsl / ast_to_hir.cpp

diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp
index 28aff397757aa483573d97fc1478b236376c8c97..c580359fdd0a41f74ba031a4df04ef0fa5c25ce0 100644 (file)
--- a/src/glsl/ast_to_hir.cpp
+++ b/src/glsl/ast_to_hir.cpp
@@ -54,6 +54,7 @@
 #include "glsl_parser_extras.h"
 #include "ast.h"
 #include "glsl_types.h"
+#include "program/hash_table.h"
 #include "ir.h"
 
 void
@@ -3534,6 +3535,9 @@ ast_switch_statement::hir(exec_list *instructions,
 
    state->switch_state.is_switch_innermost = true;
    state->switch_state.switch_nesting_ast = this;
+   state->switch_state.labels_ht = hash_table_ctor(0, hash_table_pointer_hash,
+                                                  hash_table_pointer_compare);
+   state->switch_state.previous_default = NULL;
 
    /* Initalize is_fallthru state to false.
     */
@@ -3572,6 +3576,8 @@ ast_switch_statement::hir(exec_list *instructions,
     */
    body->hir(instructions, state);
 
+   hash_table_dtor(state->switch_state.labels_ht);
+
    state->switch_state = saved;
 
      /* Switch statements do not have r-values.
@@ -3709,6 +3715,24 @@ ast_switch_statement::hir(exec_list *instructions,
 
           /* Stuff a dummy value in to allow processing to continue. */
           label_const = new(ctx) ir_constant(0);
+       } else {
+          ast_expression *previous_label = (ast_expression *)
+             hash_table_find(state->switch_state.labels_ht,
+                             (void *)(uintptr_t)label_const->value.u[0]);
+
+          if (previous_label) {
+             YYLTYPE loc = this->test_value->get_location();
+             _mesa_glsl_error(& loc, state,
+                              "duplicate case value");
+
+             loc = previous_label->get_location();
+             _mesa_glsl_error(& loc, state,
+                              "this is the previous case label");
+          } else {
+             hash_table_insert(state->switch_state.labels_ht,
+                               this->test_value,
+                               (void *)(uintptr_t)label_const->value.u[0]);
+          }
        }
 
        ir_dereference_variable *deref_test_var =
@@ -3726,6 +3750,20 @@ ast_switch_statement::hir(exec_list *instructions,
 
        instructions->push_tail(set_fallthru_on_test);
      } else { /* default case */
+       if (state->switch_state.previous_default) {
+          printf("a\n");
+          YYLTYPE loc = this->get_location();
+          _mesa_glsl_error(& loc, state,
+                              "multiple default labels in one switch");
+
+          printf("b\n");
+
+          loc = state->switch_state.previous_default->get_location();
+          _mesa_glsl_error(& loc, state,
+                           "this is the first default label");
+       }
+       state->switch_state.previous_default = this;
+
        /* Set falltrhu state.
         */
        ir_assignment *set_fallthru =