From 366a947cdf2e3c6958b7a9e17d561ce76ab0f594 Mon Sep 17 00:00:00 2001 From: ArielG-NV <159081215+ArielG-NV@users.noreply.github.com> Date: Thu, 25 Apr 2024 09:18:32 -0400 Subject: Support derivative functions in compute & capabilities adjustments (#4014) * Support derivative functions in compute & capabilities adjustments fixes #4000 PR implements derivative functions in compute shaders properly so we have the functionality for SPIR-V & GLSL. Tests reflect fragment and compute paths. PR also adjusts capabilities to correct wrong SPRI-V target capabilities for when using textures. Remarks: 1. __requireComputeDerivative(); is a intrinsic_op and not modifier since inlining will destroy the modifier. 2. Derivative mode is tied to an entry point decoration `[DerivativeGroupQuad]`/`[DerivativeGroupLinear]` or GLSL syntax ``derivative_group_linearNV`. Default is to set the mode to `[DerivativeGroupQuad]` * remove -emit-spirv-directly * fixes 1. fix minor issue fwidth change where I returned the wrong type 2. fix issue where glslang{glsl->spirv} is wrong, so we don't run that test and just run the glsl test & direct spir-v test for intrinsic-texture.slang * adjust as per review and refine code 1. add test to ensure multi-diverging-in-logic entry points work -- 2 functions which may cause computeDerivatives + 1 that uses, 1 that does not. 2. naming 3. use entry point ref graph for c-like-targets 4. reordered some code to util's and removed `static linline` since that was just for ease of coding on my end (should not have been pushed). * Grammer * split up source file + issolate GLSL emit path change. --------- Co-authored-by: Yong He --- .../gpu-feature/derivatives-in-compute/derivatives-in-compute.md | 9 +++++++++ 1 file changed, 9 insertions(+) create mode 100644 docs/gpu-feature/derivatives-in-compute/derivatives-in-compute.md (limited to 'docs/gpu-feature') diff --git a/docs/gpu-feature/derivatives-in-compute/derivatives-in-compute.md b/docs/gpu-feature/derivatives-in-compute/derivatives-in-compute.md new file mode 100644 index 000000000..8319202f4 --- /dev/null +++ b/docs/gpu-feature/derivatives-in-compute/derivatives-in-compute.md @@ -0,0 +1,9 @@ +### Derivatives In Compute +An entry point may be decorated with `[DerivativeGroupQuad]` or `[DerivativeGroupLinear]` to specifiy how to use derivatives in compute shaders. + +GLSL syntax may also be used, but is not reccomended (`derivative_group_quadsNV`/`derivative_group_linearNV`). + +Targets: +* **_SPIRV:_** Enables `DerivativeGroupQuadsNV` or `DerivativeGroupLinearNV`. +* **_GLSL:_** Enables `derivative_group_quadsNV` or `derivative_group_LinearNV`. +* **_HLSL:_** Does nothing. sm_6_6 is required to use derivatives in compute shaders. HLSL uses an equivlent of `DerivativeGroupQuad`. \ No newline at end of file -- cgit v1.2.3