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Dean Galvin
1ef97e517c
A compute shader with an LOD query was emitted with DerivativeGroupQuadsKHR, which needs both workgroup dimensions even. A guest workgroup of N x 1 lanes failed SPIR-V validation (VUID-StandaloneSpirv-DerivativeGroupQuadsKHR-10151), which agc_driver_waterfall_images hits on every device. GFX10 forms a compute quad from four consecutive lanes, which is DerivativeGroupLinearKHR. The wave64 path no longer reshapes its workgroup to 2 x N, which only made the 2D quads match consecutive lanes.