Reduce aliasing with AlphaToMask mode
Use the AlphaToMask command to set the GPU to modify multisample anti-aliasing (MSAA) to reduce aliasing un shaders that use alpha testing, such as vegetation shaders.
Read time 1 minuteLast updated a month ago
Alpha-to-coverage mode can reduce the excessive aliasing that occurs when you use multisample anti-aliasing (MSAA) with shaders that use alpha testing, such as vegetation shaders. To do this, it modifies the multisample coverage mask proportionally to the alpha value in the output of the fragment shader result.
This command is intended for use with MSAA. If you enable alpha-to-coverage mode when you are not using MSAA, the results can be unpredictable; different graphics APIs and GPUs handle this differently.
Examples
Shader "Examples/CommandExample"{ SubShader { // The rest of the code that defines the SubShader goes here. Pass { // Enable alpha-to-coverage mode for this Pass AlphaToMask On // The rest of the code that defines the Pass goes here. } }}
This example code demonstrates the syntax for using this command in a SubShader block.
Shader "Examples/CommandExample"{ SubShader { // Enable alpha-to-coverage mode for this SubShader AlphaToMask On // The rest of the code that defines the SubShader goes here. Pass { // The rest of the code that defines the Pass goes here. } }}