glsl: minor clean-up for rect sampler test

diff --git a/src/mesa/shader/slang/slang_codegen.c b/src/mesa/shader/slang/slang_codegen.c
index 51eb4c9c1123e9c59cba8dbf8d5ece9b21509b48..11340d26e21da41abc87752db4ad9ecdc8edb2a8 100644 (file)
--- a/src/mesa/shader/slang/slang_codegen.c
+++ b/src/mesa/shader/slang/slang_codegen.c
@@ -4238,6 +4238,21 @@ _slang_gen_operation(slang_assemble_ctx * A, slang_operation *oper)
 }
 
 
+/**
+ * Check if the given type specifier is a rectangular texture sampler.
+ */
+static GLboolean
+is_rect_sampler_spec(const slang_type_specifier *spec)
+{
+   while (spec->_array) {
+      spec = spec->_array;
+   }
+   return spec->type == SLANG_SPEC_SAMPLER2DRECT ||
+          spec->type == SLANG_SPEC_SAMPLER2DRECTSHADOW;
+}
+
+
+
 /**
  * Called by compiler when a global variable has been parsed/compiled.
  * Here we examine the variable's type to determine what kind of register
@@ -4282,14 +4297,12 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var,
       }
 #if FEATURE_es2_glsl /* XXX should use FEATURE_texture_rect */
       /* disallow rect samplers */
-      if ((var->type.specifier._array && 
-           (var->type.specifier._array->type == SLANG_SPEC_SAMPLER2DRECT ||
-            var->type.specifier._array->type == SLANG_SPEC_SAMPLER2DRECTSHADOW)) ||
-          (var->type.specifier.type == SLANG_SPEC_SAMPLER2DRECT ||
-           var->type.specifier.type == SLANG_SPEC_SAMPLER2DRECTSHADOW)) {
+      if (is_rect_sampler_spec(&var->type.specifier)) {
          slang_info_log_error(A->log, "invalid sampler type for '%s'", varName);
          return GL_FALSE;
       }
+#else
+      (void) is_rect_sampler_spec; /* silence warning */
 #endif
       {
          GLint sampNum = _mesa_add_sampler(prog->Parameters, varName, datatype);