glsl: Parse shared keyword for compute shader variables

v2:
 * Move shared parsing under storage qualifiers (tarceri)
 * Fail to compile if shared is used in non-compute shader (tarceri)
 * Use separate shared_storage bit for shared variables (tarceri)

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp
index 5a22820c692..a8eaecc54c3 100644
--- a/src/glsl/ast_to_hir.cpp
+++ b/src/glsl/ast_to_hir.cpp
@@ -3089,6 +3089,12 @@ apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual,
                        "members");
    }
 
+   if (qual->flags.q.shared_storage && state->stage != MESA_SHADER_COMPUTE) {
+      _mesa_glsl_error(loc, state,
+                       "the shared storage qualifiers can only be used with "
+                       "compute shaders");
+   }
+
    if (qual->flags.q.row_major || qual->flags.q.column_major) {
       validate_matrix_layout_for_type(state, loc, var->type, var);
    }