/// <summary>
/// 搜集keywords
/// </summary>
public ShaderVariantCollection CollectionKeywords(string[] matPaths, ShaderVariantCollection excludeCollection)
{
var shaderCollection = new ShaderVariantCollection();
//遍历所有mat的KeyWords
foreach (var path in matPaths)
{
//Material;
var material = AssetDatabase.LoadAssetAtPath <Material>(path);
//shader数据
var ret = shaderDataMap.TryGetValue(material.shader, out var shaderData);
if (!ret)
{
shaderData = ShaderUtilImpl.GetShaderVariantEntriesFilteredInternal(material.shader, 256, new string[] { }, excludeCollection);
shaderDataMap[material.shader] = shaderData;
}
//收集shaderVaraint
var passTypes = shaderData.passTypes.Distinct();
foreach (var pt in passTypes)
{
var shaderVaraint = AddVariantOfPassTypeToCollection((PassType)pt, material);
shaderCollection.Add(shaderVaraint);
}
//SRP的搜集
// AddVariantOfPassTypeToCollection(PassType.ScriptableRenderPipeline, material);
// //ShadiwCast的keyword
// if (material.FindPass("ShadowCaster") != -1)
// {
// AddVariantOfPassTypeToCollection(PassType.ShadowCaster, material);
// }
}
return(shaderCollection);
}
/// <summary>
/// 获取所有的GlobalKeyword
/// </summary>
/// <param name="shader"></param>
/// <returns></returns>
List <string> GetShaderAllKeyworlds(Shader shader)
{
List <string> keywords = null;
shaderKeyworldsDic.TryGetValue(shader, out keywords);
if (keywords == null)
{
keywords = new List <string>(ShaderUtilImpl.GetShaderGlobalKeywords(shader));
shaderKeyworldsDic.Add(shader, keywords);
}
return(keywords);
}
