hey! this is a static git repo viewer. commit diffs, file history, older commits and other revisions won't load without javascript.

you are still able to view source files on branch tips, but the experience is degraded.

yum-mirror/slang

Making it easier to work with shaders

git clone https://git.yummers.dev/yum-mirror/slang

James Helferty (NVIDIA)render-test: Change D3D12 default to sm_6_5 (#8320)f02b084902025-09-02

1//TEST:SIMPLE(filecheck=CHECK_ANY):-target spirv-assembly -entry computeMain -stage compute
2//TEST:SIMPLE(filecheck=CHECK_ANY):-target spirv-assembly -entry computeMain -stage compute -denorm-mode-fp16 any
3//TEST:SIMPLE(filecheck=CHECK_PRESERVE_SPIRV):-target spirv-assembly -entry computeMain -stage compute -denorm-mode-fp32 preserve
4//TEST:SIMPLE(filecheck=CHECK_FTZ_SPIRV):-target spirv-assembly -entry computeMain -stage compute -denorm-mode-fp32 ftz
5
6//TEST:SIMPLE(filecheck=CHECK_ANY):-target dxil-assembly -entry computeMain -stage compute -profile cs_6_2
7//TEST:SIMPLE(filecheck=CHECK_ANY):-target dxil-assembly -entry computeMain -stage compute -profile cs_6_2 -denorm-mode-fp32 any
8//TEST:SIMPLE(filecheck=CHECK_PRESERVE_DXIL):-target dxil-assembly -entry computeMain -stage compute -profile cs_6_2 -denorm-mode-fp32 preserve
9//TEST:SIMPLE(filecheck=CHECK_FTZ_DXIL):-target dxil-assembly -entry computeMain -stage compute -profile cs_6_2 -denorm-mode-fp32 ftz
10
11// Capability shaderDenormPreserveFloat32 is VK_FALSE on the Vulkan device used for CI testing, resulting in
12// runtime error VUID-RuntimeSpirv-shaderDenormPreserveFloat32-06297 during CI testing
13//DISABLE_TEST(compute):COMPARE_COMPUTE(filecheck-buffer=PRESERVE):-vk -compute -Xslang -denorm-mode-fp32 -Xslang preserve
14// Capability shaderDenormFlushToZeroFloat32 is VK_FALSE on the Vulkan device used for CI testing, resulting in
15// runtime error VUID-RuntimeSpirv-shaderDenormFlushToZeroFloat32-06300 during CI testing
16//DISABLE_TEST(compute):COMPARE_COMPUTE(filecheck-buffer=FTZ):-vk -compute -Xslang -denorm-mode-fp32 -Xslang ftz
17
18//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=PRESERVE):-slang -compute -dx12 -profile cs_6_2 -shaderobj -Xslang -denorm-mode-fp32 -Xslang preserve
19//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=FTZ):-slang -compute -dx12 -profile cs_6_2 -Xslang -denorm-mode-fp32 -Xslang ftz
20
21// CHECK_ANY-NOT: DenormPreserve
22// CHECK_ANY-NOT: DenormFlushToZero
23
24// CHECK_PRESERVE_SPIRV: OpExecutionMode %computeMain DenormPreserve 32
25// CHECK_PRESERVE_SPIRV-NOT: OpExecutionMode %computeMain DenormPreserve 16
26// CHECK_PRESERVE_SPIRV-NOT: OpExecutionMode %computeMain DenormPreserve 64
27// CHECK_PRESERVE_SPIRV-NOT: DenormFlushToZero
28
29// CHECK_FTZ_SPIRV: OpExecutionMode %computeMain DenormFlushToZero 32
30// CHECK_FTZ_SPIRV-NOT: OpExecutionMode %computeMain DenormFlushToZero 16
31// CHECK_FTZ_SPIRV-NOT: OpExecutionMode %computeMain DenormFlushToZero 64
32// CHECK_FTZ_SPIRV-NOT: DenormPreserve
33
34// CHECK_ANY-NOT: preserve
35// CHECK_ANY-NOT: ftz
36
37// CHECK_PRESERVE_DXIL: attributes #0 = { "fp32-denorm-mode"="preserve" }
38// CHECK_PRESERVE_DXIL-NOT: ftz
39
40// CHECK_FTZ_DXIL: attributes #0 = { "fp32-denorm-mode"="ftz" }
41// CHECK_FTZ_DXIL-NOT: preserve
42
43// In preserve mode, denormalized numbers should be preserved
44// PRESERVE: CCCCD
45
46// In flush-to-zero mode, denormalized numbers should be flushed to zero
47// FTZ: 0
48
49// Smallest normal fp32
50//TEST_INPUT: set inputBuffer = ubuffer(data=[0x00800000], stride=4)
51RWStructuredBuffer<float> inputBuffer;
52
53//TEST_INPUT:ubuffer(data=[0], stride=4):out,name=outputBuffer
54RWStructuredBuffer<float> outputBuffer;
55
56[shader("compute")]
57[numthreads(1, 1, 1)]
58void computeMain()
59{
60    float smallestNormal = inputBuffer[0];
61    float denormal = smallestNormal / 10;
62    
63    outputBuffer[0] = denormal;
64}