glsl: Make invariant outputs in ES fragment shader not to cause error

In all GLSL ES versions output variables in fragment shader are allowed
to be invariant.

 From Section 4.6.1 ("The Invariant Qualifier") GLSL ES 1.00 spec:
 "Only the following variables may be declared as invariant:
   ...
   - Built-in special variables output from the fragment shader."

 From Section 4.6.1 ("The Invariant Qualifier") GLSL ES 3.00 spec:
 "Only variables output from a shader can be candidates for invariance."

Signed-off-by: Danylo Piliaiev <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107842

1 files changed, 1 insertions, 1 deletions

diff --git a/src/compiler/glsl/ast_to_hir.cpp b/src/compiler/glsl/ast_to_hir.cpp
index 611cfabbd03..67a5a8c0509 100644
--- a/src/compiler/glsl/ast_to_hir.cpp
+++ b/src/compiler/glsl/ast_to_hir.cpp
@@ -2721,7 +2721,7 @@ is_allowed_invariant(ir_variable *var, struct _mesa_glsl_parse_state *state)
     * "Only variables output from a vertex shader can be candidates
     * for invariance".
     */
-   if (!state->is_version(130, 0))
+   if (!state->is_version(130, 100))
       return false;
 
    /*