i965 gen6: Implement rasterizer discard.

[mesa.git] / src / glsl / ast.h

diff --git a/src/glsl/ast.h b/src/glsl/ast.h
index 532347df4bd724b46131fe554b057233f4bccbbe..d899bc62a81dffe5d638121ab05a455cd0d77155 100644 (file)
--- a/src/glsl/ast.h
+++ b/src/glsl/ast.h
@@ -437,6 +437,7 @@ enum ast_types {
    ast_sampler2drect,
    ast_sampler3d,
    ast_samplercube,
+   ast_samplerexternaloes,
    ast_sampler1dshadow,
    ast_sampler2dshadow,
    ast_sampler2drectshadow,
@@ -628,13 +629,78 @@ public:
 
 class ast_case_label : public ast_node {
 public:
+   ast_case_label(ast_expression *test_value);
+   virtual void print(void) const;
+
+   virtual ir_rvalue *hir(exec_list *instructions,
+                         struct _mesa_glsl_parse_state *state);
 
    /**
-    * An expression of NULL means 'default'.
+    * An test value of NULL means 'default'.
     */
-   ast_expression *expression;
+   ast_expression *test_value;
+};
+
+
+class ast_case_label_list : public ast_node {
+public:
+   ast_case_label_list(void);
+   virtual void print(void) const;
+
+   virtual ir_rvalue *hir(exec_list *instructions,
+                         struct _mesa_glsl_parse_state *state);
+
+   /**
+    * A list of case labels.
+    */
+   exec_list labels;
 };
 
+
+class ast_case_statement : public ast_node {
+public:
+   ast_case_statement(ast_case_label_list *labels);
+   virtual void print(void) const;
+
+   virtual ir_rvalue *hir(exec_list *instructions,
+                         struct _mesa_glsl_parse_state *state);
+
+   ast_case_label_list *labels;
+
+   /**
+    * A list of statements.
+    */
+   exec_list stmts;
+};
+
+
+class ast_case_statement_list : public ast_node {
+public:
+   ast_case_statement_list(void);
+   virtual void print(void) const;
+
+   virtual ir_rvalue *hir(exec_list *instructions,
+                         struct _mesa_glsl_parse_state *state);
+
+   /**
+    * A list of cases.
+    */
+   exec_list cases;
+};
+
+
+class ast_switch_body : public ast_node {
+public:
+   ast_switch_body(ast_case_statement_list *stmts);
+   virtual void print(void) const;
+
+   virtual ir_rvalue *hir(exec_list *instructions,
+                         struct _mesa_glsl_parse_state *state);
+
+   ast_case_statement_list *stmts;
+};
+
+
 class ast_selection_statement : public ast_node {
 public:
    ast_selection_statement(ast_expression *condition,
@@ -653,8 +719,18 @@ public:
 
 class ast_switch_statement : public ast_node {
 public:
-   ast_expression *expression;
-   exec_list statements;
+   ast_switch_statement(ast_expression *test_expression,
+                       ast_node *body);
+   virtual void print(void) const;
+
+   virtual ir_rvalue *hir(exec_list *instructions,
+                         struct _mesa_glsl_parse_state *state);
+
+   ast_expression *test_expression;
+   ast_node *body;
+
+protected:
+   void test_to_hir(exec_list *, struct _mesa_glsl_parse_state *);
 };
 
 class ast_iteration_statement : public ast_node {