| shader | Shader that is being compiled. |
| snippet | Details about the specific shader code being compiled. |
| data | List of variants to be compiled for the specific shader code. |
Implement this interface to receive a callback before a shader snippet is compiled.
Check global keywords by constructing a ShaderKeyword instance with the name of the keyword. To check local keywords, use an additional parameter to specify the shader that is using the local keyword.
using System.Collections.Generic; using UnityEditor.Build; using UnityEditor.Rendering; using UnityEngine; using UnityEngine.Rendering;
class MyCustomBuildProcessor : IPreprocessShaders { ShaderKeyword m_GlobalKeywordBlue;
public MyCustomBuildProcessor() { m_GlobalKeywordBlue = new ShaderKeyword("_BLUE"); }
public int callbackOrder { get { return 0; } }
public void OnProcessShader(Shader shader, ShaderSnippetData snippet, IList<ShaderCompilerData> data) { ShaderKeyword localKeywordRed = new ShaderKeyword(shader, "_RED"); for (int i = data.Count - 1; i >= 0; --i) { if (!data[i].shaderKeywordSet.IsEnabled(m_GlobalKeywordBlue)) continue; if (!data[i].shaderKeywordSet.IsEnabled(localKeywordRed)) continue;
data.RemoveAt(i); } } }