glsl2: Enable all supported extensions in stand-alone compiler
diff --git a/src/glsl/glsl_parser_extras.cpp b/src/glsl/glsl_parser_extras.cpp
index 15fa61d..dbf6f53 100644
--- a/src/glsl/glsl_parser_extras.cpp
+++ b/src/glsl/glsl_parser_extras.cpp
@@ -74,6 +74,11 @@
       static struct gl_extensions null_extensions;
 
       memset(&null_extensions, 0, sizeof(null_extensions));
+      null_extensions.ARB_draw_buffers = GL_TRUE;
+      null_extensions.ARB_fragment_coord_conventions = GL_TRUE;
+      null_extensions.EXT_texture_array = GL_TRUE;
+      null_extensions.NV_texture_rectangle = GL_TRUE;
+
       this->extensions = &null_extensions;
 
       /* 1.10 minimums. */