glsl: add image_format check in cross_validate_globals()

Fixes CTS test:

ES31-CTS.shader_image_load_store.negative-linkErrors

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=93410

Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>

diff --git a/src/glsl/linker.cpp b/src/glsl/linker.cpp
index e8c0b98176065f1163550ff8cd138902abcab6f3..564c47128718f9af32ee1408a98c0394cd3dc740 100644 (file)
--- a/src/glsl/linker.cpp
+++ b/src/glsl/linker.cpp
@@ -1133,6 +1133,12 @@ cross_validate_globals(struct gl_shader_program *prog,
                             mode_string(var), var->name);
                return;
             }
+            if (existing->data.image_format != var->data.image_format) {
+               linker_error(prog, "declarations for %s `%s` have "
+                            "mismatching image format qualifiers\n",
+                            mode_string(var), var->name);
+               return;
+            }
         } else
            variables.add_variable(var);
       }