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2017-01-02roto: add TODO comment about faster lerp_color()Vito Caputo
2017-01-02roto: skip lerp of identical colorsVito Caputo
With the current checkerboard pattern the majority of the interpolation being performed is pointless. Of course with a more complex texture this won't be as beneficial, but for now it makes a significant FPS improvement.
2016-12-30roto: bilinear interpolation of texture colorsVito Caputo
This implements anti-aliasing, no more jaggies! Still 100% software rendering, fixed point arithmetic. Maybe add zooming with mipmaps next?
2016-12-30roto: move initialization to shared functionVito Caputo
reduce some of the silly duplication across 32/64 versions.
2016-12-30roto: some fixed point macro cleanupsVito Caputo
2016-12-13roto: add modular forms of original rendererVito Caputo
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