Legacy GPU Processor clamping


Benjamin Legros
 


Hello devs,

We recently switched to OCIO 2.0 on our 3d app, and we've used the OptimizedLegacyGPUProcessor pipeline for viewing rendered images. It works good but for clamping, which would not happen with OCIO 1.x.
This happens with an ACES 1.2 config, transforming from scene_linear to Output - Rec.709.

I saw a post that seemed related: https://lists.aswf.io/g/ocio-dev/topic/75398682#1988
But I could not find in the version notes if this issue was addressed or not.

Is this also a problem to expect with the non legacy pipeline?

Best,
Benjamin


Paul Miller
 

This does still seem to be an issue with the Legacy processor.

I switched my GPU processing over to the newer API which can generate multiple textures, and the problem went away.


On 9/27/22 7:00 AM, Benjamin Legros wrote:


Hello devs,

We recently switched to OCIO 2.0 on our 3d app, and we've used the OptimizedLegacyGPUProcessor pipeline for viewing rendered images. It works good but for clamping, which would not happen with OCIO 1.x.
This happens with an ACES 1.2 config, transforming from scene_linear to Output - Rec.709.

I saw a post that seemed related: https://lists.aswf.io/g/ocio-dev/topic/75398682#1988
But I could not find in the version notes if this issue was addressed or not.

Is this also a problem to expect with the non legacy pipeline?

Best,
Benjamin