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Fix SEGIVoxelizeScene_C interlockedAddFloat4 function causing crashes #17

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merged 1 commit into from Sep 25, 2017
Merged

Fix SEGIVoxelizeScene_C interlockedAddFloat4 function causing crashes #17

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36 changes: 22 additions & 14 deletions Resources/SEGIVoxelizeScene_C.shader
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Expand Up @@ -224,30 +224,38 @@

void interlockedAddFloat4(RWTexture3D<uint> destination, int3 coord, float4 value)
{
uint comp;
uint orig = destination[coord];
uint writeValue = EncodeRGBAuint(value);
uint compareValue = 0;
uint originalValue;

[allow_uav_condition]
do
while (true)
{
comp = orig;
InterlockedCompareExchange(destination[coord], comp, EncodeRGBAuint(max(DecodeRGBAuint(orig), value)), orig);
}
while (orig != comp);
InterlockedCompareExchange(destination[coord], compareValue, writeValue, originalValue);
if (compareValue == originalValue)
break;
compareValue = originalValue;
float4 originalValueFloats = DecodeRGBAuint(originalValue);
writeValue = EncodeRGBAuint(originalValueFloats + value);
}
}

void interlockedAddFloat4b(RWTexture3D<uint> destination, int3 coord, float4 value)
{
uint comp;
uint orig = destination[coord];
uint writeValue = EncodeRGBAuint(value);
uint compareValue = 0;
uint originalValue;

[allow_uav_condition]
do
while (true)
{
comp = orig;
InterlockedCompareExchange(destination[coord], comp, EncodeRGBAuint(max(DecodeRGBAuint(orig), value)), orig);
}
while (orig != comp);
InterlockedCompareExchange(destination[coord], compareValue, writeValue, originalValue);
if (compareValue == originalValue)
break;
compareValue = originalValue;
float4 originalValueFloats = DecodeRGBAuint(originalValue);
writeValue = EncodeRGBAuint(originalValueFloats + value);
}
}

float4x4 SEGIVoxelToGIProjection;
Expand Down