glsl: OpenGLES GLSL 3.1 precision qualifiers ordering rules

The OpenGLES GLSL 3.1 specification uses the precision qualifier
ordering rules from ARB_shading_language_420pack.

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Reviewed-by: Marta Lofstedt <marta.lofstedt@intel.com>

diff --git a/src/glsl/glsl_parser.yy b/src/glsl/glsl_parser.yy
index 2f2e10d..4636435 100644 (file)
--- a/src/glsl/glsl_parser.yy
+++ b/src/glsl/glsl_parser.yy
@@ -948,7 +948,8 @@ parameter_qualifier:
       if ($2.precision != ast_precision_none)
          _mesa_glsl_error(&@1, state, "duplicate precision qualifier");
 
-      if (!state->has_420pack() && $2.flags.i != 0)
+      if (!(state->has_420pack() || state->is_version(420, 310)) &&
+          $2.flags.i != 0)
          _mesa_glsl_error(&@1, state, "precision qualifiers must come last");
 
       $$ = $2;
@@ -1847,7 +1848,8 @@ type_qualifier:
       if ($2.precision != ast_precision_none)
          _mesa_glsl_error(&@1, state, "duplicate precision qualifier");
 
-      if (!state->has_420pack() && $2.flags.i != 0)
+      if (!(state->has_420pack() || state->is_version(420, 310)) &&
+          $2.flags.i != 0)
          _mesa_glsl_error(&@1, state, "precision qualifiers must come last");
 
       $$ = $2;