I've been trying to export .exr files with accurate heights (colour value = height in metres) but the values are broken when exported.
When exporting with no normalisation, with all normalisation fields blank, no value is ever more than an arbitrary small number (example: 0.00006)
Second: When normalising an image, it appears that the image is not linear.
I would expect it to be linear but apparently not. In the image below are two tiles which are next to each other on a map using the normalised .exr format.
Blender tells me these images use linear colour. But I don’t see any way that you could scale these to match each other. The heights here are 10x exaggerated in the image, but each tile is to-scale with the other.
All my tests with my terrain in Godot have shown the same results.
Non-linear data may also explain the broken non-normalised maps I tried to export yesterday.
I've been trying to export .exr files with accurate heights (colour value = height in metres) but the values are broken when exported.
When exporting with no normalisation, with all normalisation fields blank, no value is ever more than an arbitrary small number (example: 0.00006)
Second: When normalising an image, it appears that the image is not linear.
I would expect it to be linear but apparently not. In the image below are two tiles which are next to each other on a map using the normalised .exr format.
Blender tells me these images use linear colour. But I don’t see any way that you could scale these to match each other. The heights here are 10x exaggerated in the image, but each tile is to-scale with the other.
All my tests with my terrain in Godot have shown the same results.
Non-linear data may also explain the broken non-normalised maps I tried to export yesterday.