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Asked By | textrivers |
I need to make a visual shader material that would turn partially transparent (ie lower the alpha) when the mesh is between the player and the camera. I can get the camera position, and I can do the calculations (“if object is between player’s position and camera position, lower alpha”) – how do I pass in the player’s position?
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Reply From: | jtarallo |
Use uniforms:
They also work in visual shaders, just like in scripted ones. You add them as any other node.
Thank you! Yeah I was looking at that. So do I just give it a reference with an absolute path to the player? And (assuming every object with this shader on it is updating the player’s position every frame) is that a problem for performance?
textrivers | 2020-06-09 23:19
I’d create a Vector3 uniform and have it be updated with the player’s position in a process function of a scene which has access to the shader. Don’t think performance will be an issue, but it depends in the complexity of the shader.
jtarallo | 2020-06-09 23:30
I’ll try that. Thank you!
textrivers | 2020-06-09 23:50
Working! The key to this was making sure that my uniform was a vec3, not a xform, so that when I passed in the translation it accepted it correctly. Thank you so much!!
textrivers | 2020-06-10 21:27
No problem! Glad to help. Good luck!
jtarallo | 2020-06-10 22:40