glsl: Export the compiler's GS layout qualifiers to the gl_shader.

Next step is to validate them at link time.

v2 (Paul Berry <[email protected]>): Don't attempt to export the
layout qualifiers in the event of a compile error, since some of them
are set up by ast_to_hir(), and ast_to_hir() isn't guaranteed to have
run in the event of a compile error.

Reviewed-by: Kenneth Graunke <[email protected]>

v3 (Paul Berry <[email protected]>): Use PRIM_UNKNOWN to
represent "not set in this shader".

Reviewed-by: Ian Romanick <[email protected]>

1 files changed, 18 insertions, 0 deletions

diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 83de3dda893..49b31adc87a 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -2171,6 +2171,24 @@ struct gl_shader
    /** Shaders containing built-in functions that are used for linking. */
    struct gl_shader *builtins_to_link[16];
    unsigned num_builtins_to_link;
+
+   /**
+    * Geometry shader state from GLSL 1.50 layout qualifiers.
+    */
+   struct {
+      GLint VerticesOut;
+      /**
+       * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY, GL_TRIANGLES, or
+       * GL_TRIANGLES_ADJACENCY, or PRIM_UNKNOWN if it's not set in this
+       * shader.
+       */
+      GLenum InputType;
+       /**
+        * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or PRIM_UNKNOWN if
+        * it's not set in this shader.
+        */
+      GLenum OutputType;
+   } Geom;
 };