diff options
Diffstat (limited to 'Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleDown.glsl')
| -rw-r--r-- | Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleDown.glsl | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleDown.glsl b/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleDown.glsl new file mode 100644 index 00000000..46750f20 --- /dev/null +++ b/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleDown.glsl @@ -0,0 +1,9 @@ +float Helper_ShuffleDown(float x, uint index, uint mask) +{ + uint clamp = mask & 0x1fu; + uint segMask = (mask >> 8) & 0x1fu; + uint minThreadId = gl_SubGroupInvocationARB & segMask; + uint maxThreadId = minThreadId | (clamp & ~segMask); + uint srcThreadId = gl_SubGroupInvocationARB + index; + return (srcThreadId <= maxThreadId) ? readInvocationARB(x, srcThreadId) : x; +}
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