linker: Handle varying arrays, matrices, and arrays of matrices
Fixes piglit test case glsl-array-varying-01.
diff --git a/src/glsl/linker.cpp b/src/glsl/linker.cpp
index 56e0bfd..e0823c3 100644
--- a/src/glsl/linker.cpp
+++ b/src/glsl/linker.cpp
@@ -1296,15 +1296,24 @@
assert(input_var->location == -1);
- /* FINISHME: Location assignment will need some changes when arrays,
- * FINISHME: matrices, and structures are allowed as shader inputs /
- * FINISHME: outputs.
- */
output_var->location = output_index;
input_var->location = input_index;
- output_index++;
- input_index++;
+ /* FINISHME: Support for "varying" records in GLSL 1.50. */
+ assert(!output_var->type->is_record());
+
+ if (output_var->type->is_array()) {
+ const unsigned slots = output_var->type->length
+ * output_var->type->fields.array->matrix_columns;
+
+ output_index += slots;
+ input_index += slots;
+ } else {
+ const unsigned slots = output_var->type->matrix_columns;
+
+ output_index += slots;
+ input_index += slots;
+ }
}
demote_unread_shader_outputs(producer);