         @pixel_ratio_x = pixel_ratio_y = 1
         @camera_z = vec3.create()
         @lod_factor = 1
-        @no_s3tc = no_s3tc
+        @no_s3tc = @context.MYOU_PARAMS.no_s3tc
         ba = @context.MYOU_PARAMS.background_alpha
         @background_alpha = if ba? then ba else 1
         @compiled_shaders_this_frame = 0

                gl = canvas.getContext("webgl", glflags) or canvas.getContext("experimental-webgl", glflags)

        if not gl
            on_webgl_failed?()
            throw "Error: Can't start WebGL"

        @context = context


        lost = (event)->
            event.preventDefault()
            @context.MYOU_PARAMS.on_context_lost?()
            render_manager.clear_context()
        restored = (event)->
            render_manager.restore_context()
            @context.MYOU_PARAMS.on_context_restored? and requestAnimationFrame(@context.MYOU_PARAMS.on_context_restored)
        canvas.addEventListener "webglcontextlost", lost, false
        canvas.addEventListener "webglcontextrestored", restored, false
        @initialize()
