softpipe
A very simple, proof of concept software rasterizer.
⚠️⚠️⚠️WARNING⚠️⚠️⚠️
This piece of code is just a proof-of-concept, showing how rasterization-based rendering works.
The code quality (especially the MATLAB part) is not very good, and both versions are very slow
(takes >1 seconds to render a 600 * 600 triangle, thus 180,000 pixels). For production purpose
you may want llvmpipe things instead.
Overall workflow
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Run vertex shader on all input vertices
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Set the 4th dimension of all output `v_position`s to 1
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For each 3 vertex outputs, scan through the rectangle containing this triangle
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Interpolate outputs with barycentric coordinate
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Do depth test
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Run fragment shader on interpolated output, get the final fragment color
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