Generating a heightmap from an array of meshes

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21

So I tried to test it out first:

I have a camera placed at vec (0, 10, 0)

a ground mesh placed at vec (0, 5, 0)

I would then expect the values in the texture to all be 5. Instead they are all zero…

I noticed you first assign the ground.material.emissiveTexture the value returned by renderer.getDepthMap(), but then assign it the value of convert, new BABYLON.ProceduralTexture('convert', 512, 'convert', scene)

Is this intentional?

22

@Cedric OR is it actually like this:

mat.emissiveTexture.readPixels().then((data) => window.tData = data)

tData.length / 4 // → 262144
tData.length ** 0.5 // → 512

So my clip space is a 515 x 512 plane centered on the camera, looking straight down, where each coordinate on the plane is of the form Vector4(x,y,z,w)?

23

I would use a renderTarget with a r32f or rgba32f output.
don’t forget default texture format is 8bits per component. you can’t store normalized value > 255

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