glsl/cs: Handle compute shader local_size_{x,y,z} declaration.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/src/glsl/ast.h b/src/glsl/ast.h
index 2d6f3a2..61fd923 100644
--- a/src/glsl/ast.h
+++ b/src/glsl/ast.h
@@ -460,6 +460,12 @@ struct ast_type_qualifier {
 	 unsigned prim_type:1;
 	 unsigned max_vertices:1;
 	 /** \} */
+
+         /**
+          * local_size_{x,y,z} flags for compute shaders.  Bit 0 represents
+          * local_size_x, and so on.
+          */
+         unsigned local_size:3;
       }
       /** \brief Set of flags, accessed by name. */
       q;
@@ -510,6 +516,13 @@ struct ast_type_qualifier {
    int offset;
 
    /**
+    * Local size specified via GL_ARB_compute_shader's "local_size_{x,y,z}"
+    * layout qualifier.  Element i of this array is only valid if
+    * flags.q.local_size & (1 << i) is set.
+    */
+   int local_size[3];
+
+   /**
     * Return true if and only if an interpolation qualifier is present.
     */
    bool has_interpolation() const;
@@ -989,6 +1002,27 @@ private:
    const GLenum prim_type;
 };
 
+
+/**
+ * AST node representing a decalaration of the input layout for compute
+ * shaders.
+ */
+class ast_cs_input_layout : public ast_node
+{
+public:
+   ast_cs_input_layout(const struct YYLTYPE &locp, const unsigned *local_size)
+   {
+      memcpy(this->local_size, local_size, sizeof(this->local_size));
+      set_location(locp);
+   }
+
+   virtual ir_rvalue *hir(exec_list *instructions,
+                          struct _mesa_glsl_parse_state *state);
+
+private:
+   unsigned local_size[3];
+};
+
 /*@}*/
 
 extern void