Viewport Render Image low dynamic range
Posted: Sun Oct 25, 2026 12:55 am
For my work, I tend to make heavy use of Blender Compositor nodes and various post-processing plugins and need to see the results real-time in the viewport. I've noticed that Octane Render seems to send an LDR/SDR depth image to the viewport which basically makes these tools useless. For final renders, a full HDR image is sent to Blender and these tools work as expected, but it's annoying to have to do a final render to see, for example, basic color correction. Is this a bug or design decision for performance or some other reason? Would it be possible to add a toggle to UI so we can work in a more native fashion? Or am I just missing an existing feature?
FWIW.. I was able to create a Python shim that requests the full HDR image be sent to the viewport it seems to work (N=1 of course), and my quality of Octane Blender life has improved immensely. I don't want to post any unofficial code however and would prefer a supported workflow to get this done if it exists or can be implemented.
Here's an example of what I mean using the default Path Tracing scene (31.12) and an HDRI background...
What do you think?
FWIW.. I was able to create a Python shim that requests the full HDR image be sent to the viewport it seems to work (N=1 of course), and my quality of Octane Blender life has improved immensely. I don't want to post any unofficial code however and would prefer a supported workflow to get this done if it exists or can be implemented.
Here's an example of what I mean using the default Path Tracing scene (31.12) and an HDRI background...