glsl: use explicit offset when lowering buffer access

Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>

diff --git a/src/compiler/glsl/lower_buffer_access.cpp b/src/compiler/glsl/lower_buffer_access.cpp
index 9ad811d..f85b421 100644 (file)
--- a/src/compiler/glsl/lower_buffer_access.cpp
+++ b/src/compiler/glsl/lower_buffer_access.cpp
@@ -440,6 +440,10 @@ lower_buffer_access::setup_buffer_access(void *mem_ctx,
             else
                field_align = type->std140_base_alignment(field_row_major);
 
+            if (struct_type->fields.structure[i].offset != -1) {
+               intra_struct_offset = struct_type->fields.structure[i].offset;
+            }
+
             intra_struct_offset = glsl_align(intra_struct_offset, field_align);
 
             if (strcmp(struct_type->fields.structure[i].name,