glsl: Apply the link error conditions to GL_ARB_fragment_coord_conventions

Link error conditions added in previous patch are equally applicable
to GL_ARB_fragment_coord_conventions implementation. Extension's spec
says:
   "If gl_FragCoord is redeclared in any fragment shader in a program,
    it must be redeclared in all the fragment shaders in that program
    that have a static use of gl_FragCoord. All redeclarations of
    gl_FragCoord in all fragment shaders in a single program must have
    the same set of qualifiers."

Signed-off-by: Anuj Phogat <[email protected]>
Cc: <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index d9fb297a966..0fd81ff6d39 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -2434,6 +2434,7 @@ struct gl_shader
    bool uses_builtin_functions;
    bool uses_gl_fragcoord;
    bool redeclares_gl_fragcoord;
+   bool ARB_fragment_coord_conventions_enable;
 
    /**
     * Fragment shader state from GLSL 1.50 layout qualifiers.
@@ -2765,6 +2766,11 @@ struct gl_shader_program
     * \c NULL.
     */
    struct gl_shader *_LinkedShaders[MESA_SHADER_STAGES];
+
+   /* True if any of the fragment shaders attached to this program use:
+    * #extension ARB_fragment_coord_conventions: enable
+    */
+   GLboolean ARB_fragment_coord_conventions_enable;
 };