/// <summary>
/// 多材质验证
/// </summary>
/// <returns></returns>
bool _ValidateResultMaterials()
{
HashSet <Material> allMatsOnObjs = new HashSet <Material>();
for (int i = 0; i < objsToMesh.Count; i++)
{
if (objsToMesh[i] != null)
{
Material[] ms = MeshBakerUtility.GetGOMaterials(objsToMesh[i]);
for (int j = 0; j < ms.Length; j++)
{
if (ms[j] != null)
{
allMatsOnObjs.Add(ms[j]);
}
}
}
}
//多材质判断
HashSet <Material> allMatsInMapping = new HashSet <Material>();
for (int i = 0; i < resultMaterials.Length; i++)
{
//查重
for (int j = i + 1; j < resultMaterials.Length; j++)
{
if (resultMaterials[i].combinedMaterial == resultMaterials[j].combinedMaterial)
{
Debug.LogError(String.Format("Source To Combined Mapping: Submesh {0} and Submesh {1} use the same combined material. These should be different", i, j));
return(false);
}
}
//判空
MultiMaterial mm = resultMaterials[i];
if (mm.combinedMaterial == null)
{
Debug.LogError("Combined Material is null please create and assign a result material.");
return(false);
}
Shader targShader = mm.combinedMaterial.shader;
for (int j = 0; j < mm.sourceMaterials.Count; j++)
{
if (mm.sourceMaterials[j] == null)
{
Debug.LogError("There are null entries in the list of Source Materials");
return(false);
}
if (targShader != mm.sourceMaterials[j].shader)
{
Debug.LogWarning("Source material " + mm.sourceMaterials[j] + " does not use shader " + targShader + " it may not have the required textures. If not empty textures will be generated.");
}
if (allMatsInMapping.Contains(mm.sourceMaterials[j]))
{
Debug.LogError("A Material " + mm.sourceMaterials[j] + " appears more than once in the list of source materials in the source material to combined mapping. Each source material must be unique.");
return(false);
}
allMatsInMapping.Add(mm.sourceMaterials[j]);
}
}
if (allMatsOnObjs.IsProperSubsetOf(allMatsInMapping))
{
allMatsInMapping.ExceptWith(allMatsOnObjs);
Debug.LogWarning("There are materials in the mapping that are not used on your source objects: " + PrintSet(allMatsInMapping));
}
if (resultMaterials != null && resultMaterials.Length > 0 && allMatsInMapping.IsProperSubsetOf(allMatsOnObjs))
{
allMatsOnObjs.ExceptWith(allMatsInMapping);
Debug.LogError("There are materials on the objects to combine that are not in the mapping: " + PrintSet(allMatsOnObjs));
return(false);
}
return(true);
}
/// <summary>
/// 创建贴图 Atlas 协程
/// </summary>
/// <returns></returns>
public IEnumerator CreateAtlasesCoroutine(ProgressUpdateDelegate progressInfo,
CreateAtlasesCoroutineResult coroutineResult,
bool saveAtlasesAsAssets = false,
EditorMethodsInterface editorMethods = null,
float maxTimePerFrame = .01f)
{
OnCombinedTexturesCoroutineAtlasesAndRects = null;
//--- 1、合并前检测
if (maxTimePerFrame <= 0f)
{
Debug.LogError("maxTimePerFrame must be a value greater than zero");
coroutineResult.isFinished = true;
yield break;
}
//验证等级
ValidationLevel vl = Application.isPlaying ? ValidationLevel.quick : ValidationLevel.robust;
//验证
if (!DoCombinedValidate(this, ObjsToCombineTypes.dontCare, null, vl))
{
coroutineResult.isFinished = true;
yield break;
}
//合并为多材质验证
if (_doMultiMaterial && !_ValidateResultMaterials())
{
coroutineResult.isFinished = true;
yield break;
}
else if (!_doMultiMaterial)
{
//合并为单独材质
if (_resultMaterial == null)
{
Debug.LogError("Combined Material is null please create and assign a result material.");
coroutineResult.isFinished = true;
yield break;
}
Shader targShader = _resultMaterial.shader;
for (int i = 0; i < objsToMesh.Count; i++)
{
Material[] ms = MeshBakerUtility.GetGOMaterials(objsToMesh[i]);
for (int j = 0; j < ms.Length; j++)
{
Material m = ms[j];
if (m != null && m.shader != targShader)
{
Debug.LogWarning("游戏物体" + objsToMesh[i] + " 没有使用 shader " + targShader +
" it may not have the required textures. " +
"If not small solid color textures will be generated.");
}
}
}
}
TextureCombineHandler combiner = CreateAndConfigureTextureCombiner();
combiner.saveAtlasesAsAssets = saveAtlasesAsAssets;
////--- 2、初始化存储合并结果的数据结构
int numResults = 1;
if (_doMultiMaterial)
{
numResults = resultMaterials.Length;
}
OnCombinedTexturesCoroutineAtlasesAndRects = new AtlasesAndRects[numResults];
for (int i = 0; i < OnCombinedTexturesCoroutineAtlasesAndRects.Length; i++)
{
OnCombinedTexturesCoroutineAtlasesAndRects[i] = new AtlasesAndRects();
}
//--- 3、开始合并材质（单个，多个）
for (int i = 0; i < OnCombinedTexturesCoroutineAtlasesAndRects.Length; i++)
{
Material resMatToPass;
List <Material> sourceMats;
if (_doMultiMaterial)
{
sourceMats = resultMaterials[i].sourceMaterials;
resMatToPass = resultMaterials[i].combinedMaterial;
combiner.fixOutOfBoundsUVs = resultMaterials[i].considerMeshUVs;
}
else
{
resMatToPass = _resultMaterial;
sourceMats = null;
}
//TextureHandler 材质合并协程结果
CombineTexturesIntoAtlasesCoroutineResult coroutineResult2 = new CombineTexturesIntoAtlasesCoroutineResult();
yield return(combiner.CombineTexturesIntoAtlasesCoroutine(progressInfo,
OnCombinedTexturesCoroutineAtlasesAndRects[i],
resMatToPass,
objsToMesh,
sourceMats,
editorMethods,
coroutineResult2,
maxTimePerFrame));
coroutineResult.success = coroutineResult2.success;
if (!coroutineResult.success)
{
coroutineResult.isFinished = true;
yield break;
}
}
//--- 4、TextureBakeResults 保存合并结果
unpackMat2RectMap(textureBakeResults);
textureBakeResults.doMultiMaterial = _doMultiMaterial;
if (_doMultiMaterial)
{
textureBakeResults.resultMaterials = resultMaterials;
}
else
{
MultiMaterial[] resMats = new MultiMaterial[1];
resMats[0] = new MultiMaterial();
resMats[0].combinedMaterial = _resultMaterial;
resMats[0].considerMeshUVs = _fixOutOfBoundsUVs;
resMats[0].sourceMaterials = new List <Material>();
for (int i = 0; i < textureBakeResults.materialsAndUVRects.Length; i++)
{
resMats[0].sourceMaterials.Add(textureBakeResults.materialsAndUVRects[i].material);
}
textureBakeResults.resultMaterials = resMats;
}
//--- 5、传递合并结果到 MeshCombiner
MeshBakerCommon[] mb = GetComponentsInChildren <MeshBakerCommon>();
for (int i = 0; i < mb.Length; i++)
{
mb[i].textureBakeResults = textureBakeResults;
}
coroutineResult.isFinished = true;
//--- 6、合并材质结束回调
if (coroutineResult.success && onBuiltAtlasesSuccess != null)
{
onBuiltAtlasesSuccess();
}
if (!coroutineResult.success && onBuiltAtlasesFail != null)
{
onBuiltAtlasesFail();
}
}