How to get the atmosphere woking in godot.
- make a new shader resource in godot named atmosphere.shader
- copy all code from this file into the file
- add a new MeshInstance to your scene
- set the mesh of this MeshInstance to a CubeMesh
- make sure to enable Flip Faces (not doing this prevents the atmosphere from woring when the camera is inside the mesh)
- increase the x, y, and z size of the mesh to 60
- under the material of the mesh, make a new ShaderMaterial
- edit this ShaderMaterial, and load the atmosphere.shader file as the shader
- you should now have an atmosphere in your scene
by rotating the MeshInstance, you can change the light direction.
you can freely edit the parameters of the ShaderMaterial, here's what they do
| Parameter | Description |
|---|---|
| planet_radius | how big the planet is, affects how big the atmosphere is too |
| atmo_radius | how big the outer sphere is, if set too low, it can cut off the atmosphere, giving an ugly effect |
| beta_ray | rayleigh scattering paramater, determines the overall color of the atmosphere |
| beta_mie | mie scattering parameter, determines the color (and intensity) of the blob around the sun |
| beta_e | scale of the parameters (10^scale) before usage, all parameters are multpiplied with 10^beta_e. changing this can improve the look in many cases |
| g | mie direction, how big the mie blob around the sun is |
| height_ray | the height scale for rayleigh, how high the rayleigh scattering goes |
| height_mie | height scale for mie, how high the mie scattering goes |
| steps_i | primary ray steps, affects quality the most, 32 is a good default (more is better, but slower) |
| steps_l | light ray steps, affects the sunset quality, 4 is the lowest before the quality becomes visibly worse (more is better, but slower) |
| intensity | the light intensity, makes the atmosphere brighet |