yum-mirror/slang

Making it easier to work with shaders

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jsmall-nvidia'Explicit specialization' experiments with extensions (#2099)3aaa586c9

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1//DISABLE_TEST:SIMPLE:-target hlsl -entry computeMain -profile cs_6_2
2
3/* Slang doesn't have explicit template specialization. 
4Here's an attempt to use the extension mechanism. 
5
6This doesn't work and produces 9 errors of the form
7>  error 30052: invalid swizzle pattern 'rotateLeft' on type 'uint'
8> let v = tid.rotateLeft();
9
10Presumably for each letter of 'rotateLeft' after r, thinking it's a swizzle?
11*/
12
13RWStructuredBuffer<int> outputBuffer;
14
15interface IRotatable 
16{
17    This rotateLeft();
18};
19
20extension int : IRotatable
21{
22    This rotateLeft() { const uint u = this; return This((u << 1) | (u >> 31)); }
23};
24
25extension uint : IRotatable
26{
27    This rotateLeft() { let u = this; return This((u << 1) | (u >> 31)); }
28};
29
30[numthreads(4, 1, 1)]
31void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
32{
33    uint tid = dispatchThreadID.x;
34
35    uint v = tid.rotateLeft();
36   
37    outputBuffer[tid] = v;
38}