glsl: dont allow gl_PerVertex to be redeclared as an array of arrays

V3: move patch after fixes to ast for AoA and add const to helper
as suggested by Ian

V2: move single dimensional array detection into a helper

Signed-off-by: Timothy Arceri <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp
index 7b54eaf4390..db617cb41ac 100644
--- a/src/glsl/ast_to_hir.cpp
+++ b/src/glsl/ast_to_hir.cpp
@@ -6335,7 +6335,8 @@ ast_interface_block::hir(exec_list *instructions,
                              _mesa_shader_stage_to_string(state->stage));
          }
          if (this->instance_name == NULL ||
-             strcmp(this->instance_name, "gl_in") != 0 || this->array_specifier == NULL) {
+             strcmp(this->instance_name, "gl_in") != 0 || this->array_specifier == NULL ||
+             !this->array_specifier->is_single_dimension()) {
             _mesa_glsl_error(&loc, state,
                              "gl_PerVertex input must be redeclared as "
                              "gl_in[]");