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by flohofwoe
2020 days ago
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The most notable trick in Quake I (at least IMHO) is the triangle rasterizer line-loop which schedules the divide needed for perspective-correct texture mapping to the FPU so that this expensive divide can run in parallel to pixel-span rasterization on the integer ALU. To my young brain who's only done 8- and 16-bit assembly on simple CPUs before this was nothing short of rocket science :) |
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