Stephan Unverwerth 68a1727547 LibSoftGPU: Move alpha blend factor setup out of triangle rasterization ...

Since the alpha blend configuration should not change between most calls
of draw_primitives it makes no sense to reinitialize the blend factors
for every rasterized triangle.
The alpha blend factors are now set up whenever the device config
changes. The blend factors are stored in struct AlphaBlendFactors.

2022-01-09 16:21:13 +03:30

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