Large cloud layers and voxels... imrovements possible?

Started by pokoy, September 03, 2019, 08:37:09 AM

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noahding1


Matt

Quote from: noahding1 on December 15, 2021, 04:41:07 AMHas the voxel buffer size limit been unsealed?

For rendering: The maximum voxel buffer size is 32768 in each dimension (X, Y and Z), and the limit on the number of voxels is 1 trillion. This only affects lighting; voxels are not directly visible to the camera.

For VDB export: The exact dimensions and voxel positions could be slightly different from the buffer used for rendering, but should be quite close. The buffer is built with voxels that have approximately the same size as those used for rendering, and for most clouds you can expect the VDB buffer to be based on approximately the same resolution as the render buffer.

However, most cloud layers have more empty space than filled space, so you should expect the number of non-empty voxels in the VDB to be much lower than the number you enter into the GUI. I don't think there are any other limits on resolution, except for limits of the VDB file format.
Just because milk is white doesn't mean that clouds are made of milk.

noahding1

Quote from: Matt on December 15, 2021, 06:24:24 AM
Quote from: noahding1 on December 15, 2021, 04:41:07 AMHas the voxel buffer size limit been unsealed?

For rendering: The maximum voxel buffer size is 32768 in each dimension (X, Y and Z), and the limit on the number of voxels is 1 trillion. This only affects lighting; voxels are not directly visible to the camera.

For VDB export: The exact dimensions and voxel positions could be slightly different from the buffer used for rendering, but should be quite close. The buffer is built with voxels that have approximately the same size as those used for rendering, and for most clouds you can expect the VDB buffer to be based on approximately the same resolution as the render buffer.

However, most cloud layers have more empty space than filled space, so you should expect the number of non-empty voxels in the VDB to be much lower than the number you enter into the GUI. I don't think there are any other limits on resolution, except for limits of the VDB file format.
Thank you very much!

Can I believe that the higher the cloud cover is, the higher the voxel resolution is, so as to ensure the accuracy of VDB output?
When will the plan to open VDB output on Windows be resolved?

WAS

Exported VDBs dont looks like whats in TG without extremely high voxel count compared to vanilla TG. They come out blocky and literally low resolution like a jpeg.

At least that's how other programs like Vue, and Blender see.