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Robert Bragg
d0b870d3a9
tower: make sure not to blend when updating tower
Each level in the tower is initialized by binding the texture for that level to an offscreen framebuffer and rendering the previous level as a textured rectangle. The problem was that we were blending the previous level with undefined data so argb32 windows with transparencies would result in artefacts. This makes sure to disable blending when drawing the textured rectangle.
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