glsl: parse new transform feedback layout qualifiers

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

diff --git a/src/compiler/glsl/ast.h b/src/compiler/glsl/ast.h
index b144e24de88f9fa4dbba59f33de53a49c89e1727..7436edce88a92a1887b7808630099ea6228f956e 100644 (file)
--- a/src/compiler/glsl/ast.h
+++ b/src/compiler/glsl/ast.h
@@ -562,6 +562,15 @@ struct ast_type_qualifier {
          unsigned explicit_stream:1; /**< stream value assigned explicitly by shader code */
          /** \} */
 
+         /** \name Layout qualifiers for GL_ARB_enhanced_layouts */
+         /** \{ */
+         unsigned explicit_xfb_offset:1; /**< xfb_offset value assigned explicitly by shader code */
+         unsigned xfb_buffer:1; /**< Has xfb_buffer value assigned  */
+         unsigned explicit_xfb_buffer:1; /**< xfb_buffer value assigned explicitly by shader code */
+         unsigned xfb_stride:1; /**< Is xfb_stride value yet to be merged with global values  */
+         unsigned explicit_xfb_stride:1; /**< xfb_stride value assigned explicitly by shader code */
+         /** \} */
+
         /** \name Layout qualifiers for GL_ARB_tessellation_shader */
         /** \{ */
         /* tess eval input layout */
@@ -618,6 +627,15 @@ struct ast_type_qualifier {
    /** Stream in GLSL 1.50 geometry shaders. */
    ast_expression *stream;
 
+   /** xfb_buffer specified via the GL_ARB_enhanced_layouts keyword. */
+   ast_expression *xfb_buffer;
+
+   /** xfb_stride specified via the GL_ARB_enhanced_layouts keyword. */
+   ast_expression *xfb_stride;
+
+   /** global xfb_stride values for each buffer */
+   ast_layout_expression *out_xfb_stride[MAX_FEEDBACK_BUFFERS];
+
    /**
     * Input or output primitive type in GLSL 1.50 geometry shaders
     * and tessellation shaders.
@@ -633,8 +651,9 @@ struct ast_type_qualifier {
    ast_expression *binding;
 
    /**
-    * Offset specified via GL_ARB_shader_atomic_counter's "offset"
-    * keyword.
+    * Offset specified via GL_ARB_shader_atomic_counter's or
+    * GL_ARB_enhanced_layouts "offset" keyword, or by GL_ARB_enhanced_layouts
+    * "xfb_offset" keyword.
     *
     * \note
     * This field is only valid if \c explicit_offset is set.