[phendrenad2]

Awesome job. I tried to make a simple GPU in chisel w/ hardfloat. I also came to the conclusion that Larrabee was a joke and dedicated triangle interpolation hardware was necessary, but I didn't consider the half-float(?) or caches or other additions you had to make.

[lkcl]

thx phndrenad2. funny i just searched "chisel gpu" and found two: https://github.com/jbush001/ChiselGPU https://github.com/Chlorophytus/broccoli

half-float we'd like to do by using a dynamic SIMD-aware 64-bit ALU that has auto-partitioning. we do however already have an actual FP16 implementation https://git.libre-soc.org/?p=ieee754fpu.git;a=tree;f=src/iee...

or more to the point, one that is compile-time configureable with one parameter (bit-width), so the same HDL does FP16, FP32 and FP64. i'd like to make that dynmaically-SIMD-configureable but it'll take some base work in nmigen to do without massive code-explosions.