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[bubu]

Does write_imagef use the texture cache? Am I polluting the texture cache writing an independent texel per thread?

I think read_imagef should use the texture cache but ... what happens with write_imagef? 

And... are the write_imagef operations thread-atomic(auto-mem-fence) or can I enter a race condition if the CL threads write to multiple pixels?

thx

[MicahVillmow]

write_imagef does not pollute the texture cache. If multiple threads are writing to the same location, then there is a race condition where the last write is the winning write.

[bubu]

Originally posted by: MicahVillmow write_imagef does not pollute the texture cache. If multiple threads are writing to the same location, then there is a race condition where the last write is the winning write.

Nice, I figured it and it's exactly what I want