Heightmap needs to be a texture object, not a texture sample- which is fine. If I convert texture sample (packed map) into a texture object, how do I extract only one channel to preserve the height?
There is a heightmap channel V4 input.
The color channel set to 1 will be the channel used. So if your heightmap is in the blue channel, set the V4 to (0,0,1,0).
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Holy smokes yes, that’s exactly what I needed to hear. Thanks!