r600g: store glsl_feature_level in the r600_screen

Signed-off-by: Vadim Girlin <vadimgirlin@gmail.com>
Reviewed-by: Michel Dänzer <michel@daenzer.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

src/gallium/drivers/r600/r600_pipe.c

 		return 1;
 
 	case PIPE_CAP_GLSL_FEATURE_LEVEL:
-		return debug_get_bool_option("R600_GLSL130", FALSE) ? 130 : 120;
+		return rscreen->glsl_feature_level;
 
 	/* Supported except the original R600. */
 	case PIPE_CAP_INDEP_BLEND_ENABLE:
 	pipe_mutex_init(rscreen->fences.mutex);
 
 	rscreen->use_surface_alloc = debug_get_bool_option("R600_SURF", TRUE);
+	rscreen->glsl_feature_level = debug_get_bool_option("R600_GLSL130", FALSE) ? 130 : 120;
 
 	return &rscreen->screen;
 }

src/gallium/drivers/r600/r600_pipe.h

 
 	unsigned			num_contexts;
 	bool				use_surface_alloc;
+	int 				glsl_feature_level;
 
 	/* for thread-safe write accessing to num_contexts */
 	pipe_mutex			mutex_num_contexts;