IEnumerator _CombineTexturesIntoAtlases(ProgressUpdateDelegate progressInfo,
CombineTexturesIntoAtlasesCoroutineResult result,
AtlasesAndRects resultAtlasesAndRects,
Material resultMaterial,
List <GameObject> objsToMesh,
List <Material> allowedMaterialsFilter,
EditorMethodsInterface textureEditorMethods,
List <AtlasPackingResult> atlasPackingResult,
bool onlyPackRects,
bool splitAtlasWhenPackingIfTooBig)
{
try
{
_temporaryTextures.Clear();
MaterialPropTexture.readyToBuildAtlases = false;
// ---- 0.合并材质前回调
if (textureEditorMethods != null)
{
textureEditorMethods.Clear();
textureEditorMethods.OnPreTextureBake();
}
// ---- 1.合并材质参数校验
if (objsToMesh == null || objsToMesh.Count == 0)
{
Debug.LogError("没有游戏物体参与合并");
result.success = false;
yield break;
}
if (_atlasPadding < 0)
{
Debug.LogError("Atlas padding 必须大于等于零");
result.success = false;
yield break;
}
if (_maxTilingBakeSize < 2 || _maxTilingBakeSize > 4096)
{
Debug.LogError("无效Tilling尺寸的值Invalid value for max tiling bake size.");
result.success = false;
yield break;
}
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)
{
Debug.LogError("游戏物体" + objsToMesh[i] + " 材质为空 ");
result.success = false;
yield break;
}
}
}
if (_fixOutOfBoundsUVs && (_packingAlgorithm == PackingAlgorithmEnum.MeshBakerTexturePacker_Horizontal ||
_packingAlgorithm == PackingAlgorithmEnum.MeshBakerTexturePacker_Vertical))
{
Debug.LogWarning("合并算法为 MeshBakerTexturePacker_Horizontal 或 MeshBakerTexturePacker_Vertical，建议不打开 Consider Mesh UVs 选项");
}
if (progressInfo != null)
{
progressInfo("Collecting textures for " + objsToMesh.Count + " meshes.", .01f);
}
// ---- 2.创建材质合并管线数据
TexturePipelineData data = CreatePipelineData(resultMaterial,
new List <ShaderTextureProperty>(),
objsToMesh,
allowedMaterialsFilter,
new List <MaterialPropTexturesSet>());
// ---- 3.将材质的 shader 各参数信息写入管线数据中
if (!TextureCombinerPipeline._CollectPropertyNames(data))
{
result.success = false;
yield break;
}
// ---- 4.加载 Texture 混合器
data.nonTexturePropertyBlender.LoadTextureBlendersIfNeeded(data.resultMaterial);
// ---- 5.选择本地合并，或运行时合并
if (onlyPackRects)
{
yield return(__RunTexturePackerOnly(result, data, splitAtlasWhenPackingIfTooBig, textureEditorMethods, atlasPackingResult));
}
else
{
yield return(__CombineTexturesIntoAtlases(progressInfo, result, resultAtlasesAndRects, data, splitAtlasWhenPackingIfTooBig, textureEditorMethods));
}
}
finally
{
// ---- 6.删除缓存，合并材质完成回调
_destroyAllTemporaryTextures();
if (textureEditorMethods != null)
{
textureEditorMethods.RestoreReadFlagsAndFormats(progressInfo);
textureEditorMethods.OnPostTextureBake();
}
}
}
/// <summary>
/// Texture 合并管线第 3 步，创建 Atlas 并保存资源
/// </summary>
/// <returns></returns>
internal static IEnumerator __Step3_BuildAndSaveAtlasesAndStoreResults(ProgressUpdateDelegate progressInfo,
CombineTexturesIntoAtlasesCoroutineResult result,
TexturePipelineData data,
TextureCombineHandler combiner,
ITextureCombinerPacker packer,
AtlasPackingResult atlasPackingResult,
EditorMethodsInterface textureEditorMethods,
AtlasesAndRects resultAtlasesAndRects)
{
//run the garbage collector to free up as much memory as possible before bake to reduce MissingReferenceException problems
GC.Collect();
Texture2D[] atlases = new Texture2D[data.numAtlases];
//StringBuilder report = GenerateReport(data);
//创建图集
yield return(packer.CreateAtlases(progressInfo, data, combiner, atlasPackingResult, atlases, textureEditorMethods));
data.nonTexturePropertyBlender.AdjustNonTextureProperties(data.resultMaterial, data.texPropertyNames, data.distinctMaterialTextures, textureEditorMethods);
if (data.distinctMaterialTextures.Count > 0)
{
data.distinctMaterialTextures[0].AdjustResultMaterialNonTextureProperties(data.resultMaterial, data.texPropertyNames);
}
//结果报告
//if (progressInfo != null)
// progressInfo("Building Report", .7f);
////report on atlases created
//StringBuilder atlasMessage = new StringBuilder();
//atlasMessage.AppendLine("---- Atlases ------");
//for (int i = 0; i < data.numAtlases; i++)
//{
// if (atlases[i] != null)
// {
// atlasMessage.AppendLine("Created Atlas For: " + data.texPropertyNames[i].name + " h=" + atlases[i].height + " w=" + atlases[i].width);
// }
// else if (!_ShouldWeCreateAtlasForThisProperty(i, data._considerNonTextureProperties, data.allTexturesAreNullAndSameColor))
// {
// atlasMessage.AppendLine("Did not create atlas for " + data.texPropertyNames[i].name + " because all source textures were null.");
// }
//}
//report.Append(atlasMessage.ToString());
List <MaterialAndUVRect> mat2rect_map = new List <MaterialAndUVRect>();
for (int i = 0; i < data.distinctMaterialTextures.Count; i++)
{
MaterialPropTexturesSet texSet = data.distinctMaterialTextures[i];
List <MatAndTransformToMerged> mats = texSet.matsAndGOs.mats;
Rect allPropsUseSameTiling_encapsulatingSamplingRect;
Rect propsUseDifferntTiling_obUVRect;
texSet.GetRectsForTextureBakeResults(out allPropsUseSameTiling_encapsulatingSamplingRect, out propsUseDifferntTiling_obUVRect);
for (int j = 0; j < mats.Count; j++)
{
Rect allPropsUseSameTiling_sourceMaterialTiling = texSet.GetMaterialTilingRectForTextureBakerResults(j);
MaterialAndUVRect key = new MaterialAndUVRect(
mats[j].mat,
atlasPackingResult.rects[i],
texSet.allTexturesUseSameMatTiling,
allPropsUseSameTiling_sourceMaterialTiling,
allPropsUseSameTiling_encapsulatingSamplingRect,
propsUseDifferntTiling_obUVRect,
texSet.tilingTreatment,
mats[j].objName);
if (!mat2rect_map.Contains(key))
{
mat2rect_map.Add(key);
}
}
}
resultAtlasesAndRects.atlases = atlases; // one per texture on result shader
resultAtlasesAndRects.texPropertyNames = ShaderTextureProperty.GetNames(data.texPropertyNames); // one per texture on source shader
resultAtlasesAndRects.originMatToRect_map = mat2rect_map;
if (progressInfo != null)
{
progressInfo("Restoring Texture Formats & Read Flags", .8f);
}
combiner._destroyAllTemporaryTextures();
if (textureEditorMethods != null)
{
textureEditorMethods.RestoreReadFlagsAndFormats(progressInfo);
}
//if (report != null)
// Debug.Log(report.ToString());
yield break;
}
