glsl: Add parsing support for multi-stream output in geometry shaders.

This implements parsing requirements for multi-stream support in
geometry shaders as defined in ARB_gpu_shader5.

Signed-off-by: Samuel Iglesias Gonsalvez <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/glsl/ast.h b/src/glsl/ast.h
index 56e7bd86f91..15bf086a18e 100644
--- a/src/glsl/ast.h
+++ b/src/glsl/ast.h
@@ -509,6 +509,8 @@ struct ast_type_qualifier {
          /** \name Layout qualifiers for GL_ARB_gpu_shader5 */
          /** \{ */
          unsigned invocations:1;
+         unsigned stream:1; /**< Has stream value assigned  */
+         unsigned explicit_stream:1; /**< stream value assigned explicitly by shader code */
          /** \} */
       }
       /** \brief Set of flags, accessed by name. */
@@ -542,6 +544,9 @@ struct ast_type_qualifier {
    /** Maximum output vertices in GLSL 1.50 geometry shaders. */
    int max_vertices;
 
+   /** Stream in GLSL 1.50 geometry shaders. */
+   unsigned stream;
+
    /** Input or output primitive type in GLSL 1.50 geometry shaders */
    GLenum prim_type;