diff options
Diffstat (limited to 'src/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleDown.glsl')
| -rw-r--r-- | src/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleDown.glsl | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleDown.glsl b/src/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleDown.glsl new file mode 100644 index 00000000..71d901d5 --- /dev/null +++ b/src/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/ShuffleDown.glsl @@ -0,0 +1,11 @@ +float Helper_ShuffleDown(float x, uint index, uint mask, out bool valid) +{ + uint clamp = mask & 0x1fu; + uint segMask = (mask >> 8) & 0x1fu; + uint minThreadId = $SUBGROUP_INVOCATION$ & segMask; + uint maxThreadId = minThreadId | (clamp & ~segMask); + uint srcThreadId = $SUBGROUP_INVOCATION$ + index; + valid = srcThreadId <= maxThreadId; + float v = $SUBGROUP_BROADCAST$(x, srcThreadId); + return valid ? v : x; +}
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