/// <summary>
/// 运行时图片打包
/// </summary>
/// <param name="result"></param>
/// <param name="data"></param>
/// <param name="splitAtlasWhenPackingIfTooBig"></param>
/// <param name="textureEditorMethods"></param>
/// <param name="packingResult"></param>
/// <returns></returns>
IEnumerator __RunTexturePackerOnly(CombineTexturesIntoAtlasesCoroutineResult result,
TexturePipelineData data,
bool splitAtlasWhenPackingIfTooBig,
EditorMethodsInterface textureEditorMethods,
List <AtlasPackingResult> packingResult)
{
Debug.Log("__RunTexturePacker texture properties in shader:" + data.texPropertyNames.Count + " objsToMesh:" + data.allObjsToMesh.Count + " _fixOutOfBoundsUVs:" + data._fixOutOfBoundsUVs);
List <GameObject> usedObjsToMesh = new List <GameObject>();
yield return(TextureCombinerPipeline.__Step1_CollectDistinctMatTexturesAndUsedObjects(null, result, data, textureEditorMethods, usedObjsToMesh));
if (!result.success)
{
yield break;
}
data.allTexturesAreNullAndSameColor = new TextureCombinerPipeline.CreateAtlasForProperty[data.texPropertyNames.Count];
yield return(TextureCombinerPipeline._Step2_CalculateIdealSizesForTexturesInAtlasAndPadding(null, result, data, textureEditorMethods));
if (!result.success)
{
yield break;
}
ITextureCombinerPacker texturePaker = TextureCombinerPipeline.CreatePacker(data.IsOnlyOneTextureInAtlasReuseTextures(), data._packingAlgorithm);
// run the texture packer only
AtlasPackingResult[] aprs = TextureCombinerPipeline.RunTexturePackerOnly(data, splitAtlasWhenPackingIfTooBig, texturePaker);
for (int i = 0; i < aprs.Length; i++)
{
packingResult.Add(aprs[i]);
}
}
/// <summary>
/// 合并贴图形成纹理图集
/// </summary>
public bool CombineTexturesIntoAtlases(ProgressUpdateDelegate progressInfo,
AtlasesAndRects resultAtlasesAndRects,
Material resultMaterial,
List <GameObject> objsToMesh,
List <Material> allowedMaterialsFilter,
EditorMethodsInterface textureEditorMethods = null,
List <AtlasPackingResult> packingResults = null,
bool onlyPackRects = false,
bool splitAtlasWhenPackingIfTooBig = false)
{
CombineTexturesIntoAtlasesCoroutineResult result = new CombineTexturesIntoAtlasesCoroutineResult();
RunCorutineWithoutPause(
_CombineTexturesIntoAtlases(
progressInfo,
result,
resultAtlasesAndRects,
resultMaterial,
objsToMesh,
allowedMaterialsFilter,
textureEditorMethods,
packingResults,
onlyPackRects,
splitAtlasWhenPackingIfTooBig
),
0);
if (result.success == false)
{
Debug.LogError("Failed to generate atlases.");
}
return(result.success);
}
//float _maxTimePerFrameForCoroutine;
public IEnumerator CombineTexturesIntoAtlasesCoroutine(ProgressUpdateDelegate progressInfo,
AtlasesAndRects resultAtlasesAndRects,
Material resultMaterial,
List <GameObject> objsToMesh,
List <Material> allowedMaterialsFilter,
EditorMethodsInterface textureEditorMethods = null,
CombineTexturesIntoAtlasesCoroutineResult coroutineResult = null,
float maxTimePerFrame = .01f,
List <AtlasPackingResult> packingResults = null,
bool onlyPackRects = false,
bool splitAtlasWhenPackingIfTooBig = false)
{
coroutineResult.success = true;
coroutineResult.isFinished = false;
if (maxTimePerFrame <= 0f)
{
Debug.LogError("maxTimePerFrame must be a value greater than zero");
coroutineResult.isFinished = true;
yield break;
}
//_maxTimePerFrameForCoroutine = maxTimePerFrame;
yield return(_CombineTexturesIntoAtlases(progressInfo,
coroutineResult,
resultAtlasesAndRects,
resultMaterial,
objsToMesh,
allowedMaterialsFilter,
textureEditorMethods,
packingResults,
onlyPackRects,
splitAtlasWhenPackingIfTooBig));
coroutineResult.isFinished = true;
yield break;
}
public virtual IEnumerator ConvertTexturesToReadableFormats(ProgressUpdateDelegate progressInfo,
CombineTexturesIntoAtlasesCoroutineResult result,
TexturePipelineData data,
TextureCombineHandler combiner,
EditorMethodsInterface textureEditorMethods)
{
Debug.Assert(!data.IsOnlyOneTextureInAtlasReuseTextures());
//MakeProceduralTexturesReadable(progressInfo, result, data, combiner, textureEditorMethods, LOG_LEVEL);
for (int i = 0; i < data.distinctMaterialTextures.Count; i++)
{
for (int j = 0; j < data.texPropertyNames.Count; j++)
{
MaterialPropTexture ts = data.distinctMaterialTextures[i].ts[j];
if (!ts.isNull)
{
if (textureEditorMethods != null)
{
Texture tx = ts.GetTexture2D();
if (progressInfo != null)
{
progressInfo(String.Format("Convert texture {0} to readable format ", tx), .5f);
}
textureEditorMethods.AddTextureFormat((Texture2D)tx, data.texPropertyNames[j].isNormalMap);
}
}
}
}
yield break;
}
public IEnumerator ConvertTexturesToReadableFormats(ProgressUpdateDelegate progressInfo,
CombineTexturesIntoAtlasesCoroutineResult result,
TexturePipelineData data,
TextureCombineHandler combiner,
EditorMethodsInterface textureEditorMethods)
{
Debug.Assert(!data.IsOnlyOneTextureInAtlasReuseTextures());
yield break;
}
// texPropertyNames 是 resultMaterial中纹理属性的列表
// allowedMaterialsFilter 是材料列表。 没有这些材料的物体将被忽略。这由多种材质过滤器使用
// textureEditorMethods 仅封装编辑器功能，例如保存资产和跟踪纹理资产谁的格式已更改。 如果在运行时使用，则为null。
IEnumerator __CombineTexturesIntoAtlases(ProgressUpdateDelegate progressInfo,
CombineTexturesIntoAtlasesCoroutineResult result,
AtlasesAndRects resultAtlasesAndRects,
TexturePipelineData data,
bool splitAtlasWhenPackingIfTooBig,
EditorMethodsInterface textureEditorMethods)
{
if (progressInfo != null)
{
progressInfo("Collecting textures ", .01f);
}
// --- 1、记录各合并物体的源材质的 Prop Texture 信息写入 Data.distinctMaterialTextures
//每个图集（主图，凹凸等）都将有的 MaterialTextures.Count 个图像。
//每个 distinctMaterialTextures 对应一个游戏物体的某个材质，记录一组纹理，分别材质的在每个Prop图集一个。
List <GameObject> usedObjsToMesh = new List <GameObject>();
yield return(TextureCombinerPipeline.__Step1_CollectDistinctMatTexturesAndUsedObjects(progressInfo, result, data, textureEditorMethods, usedObjsToMesh));
if (!result.success)
{
yield break;
}
// --- 2、计算使每个材质属性中的多个材质的合理尺寸
yield return(TextureCombinerPipeline._Step2_CalculateIdealSizesForTexturesInAtlasAndPadding(progressInfo, result, data, textureEditorMethods));
if (!result.success)
{
yield break;
}
// --- 3、创建特定打包方式的打包器
ITextureCombinerPacker texturePaker = TextureCombinerPipeline.CreatePacker(data.IsOnlyOneTextureInAtlasReuseTextures(), data._packingAlgorithm);
yield return(texturePaker.ConvertTexturesToReadableFormats(progressInfo, result, data, this, textureEditorMethods));
if (!result.success)
{
yield break;
}
// --- 4、计算各源材质在合并材质 Atlas 的排布
AtlasPackingResult[] uvRects = texturePaker.CalculateAtlasRectangles(data, splitAtlasWhenPackingIfTooBig);
// --- 5、创建 Atlas 并保存
yield return(TextureCombinerPipeline.__Step3_BuildAndSaveAtlasesAndStoreResults(progressInfo,
result,
data,
this,
texturePaker,
uvRects[0],
textureEditorMethods,
resultAtlasesAndRects));
}
public static void MakeProceduralTexturesReadable(ProgressUpdateDelegate progressInfo,
CombineTexturesIntoAtlasesCoroutineResult result,
TexturePipelineData data,
TextureCombineHandler combiner,
EditorMethodsInterface textureEditorMethods)
{
Debug.LogError("TODO this should be done as close to textures being used as possible due to memory issues.");
//make procedural materials readable
/*
* for (int i = 0; i < combiner._proceduralMaterials.Count; i++)
* {
* if (!combiner._proceduralMaterials[i].proceduralMat.isReadable)
* {
* combiner._proceduralMaterials[i].originalIsReadableVal = combiner._proceduralMaterials[i].proceduralMat.isReadable;
* combiner._proceduralMaterials[i].proceduralMat.isReadable = true;
* //textureEditorMethods.AddProceduralMaterialFormat(_proceduralMaterials[i].proceduralMat);
* combiner._proceduralMaterials[i].proceduralMat.RebuildTexturesImmediately();
* }
* }
* //convert procedural textures to RAW format
*
* for (int i = 0; i < distinctMaterialTextures.Count; i++)
* {
* for (int j = 0; j < texPropertyNames.Count; j++)
* {
* if (distinctMaterialTextures[i].ts[j].IsProceduralTexture())
* {
* if (LOG_LEVEL >= MB2_LogLevel.debug) Debug.Log("Converting procedural texture to Textur2D:" + distinctMaterialTextures[i].ts[j].GetTexName() + " property:" + texPropertyNames[i]);
* Texture2D txx = distinctMaterialTextures[i].ts[j].ConvertProceduralToTexture2D(_temporaryTextures);
* distinctMaterialTextures[i].ts[j].t = txx;
* }
* }
* }
*/
}
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;
}
//第二步：计算每个材质的属性对应的 Textures 统一尺寸
//每种材质（_mainTex，凹凸，Spec ect ...）中的纹理必须大小相同
//计算要使用的最佳尺寸。 考虑平铺
//如果图集中只有一种纹理会使用原始大小
internal static IEnumerator _Step2_CalculateIdealSizesForTexturesInAtlasAndPadding(ProgressUpdateDelegate progressInfo,
CombineTexturesIntoAtlasesCoroutineResult result,
TexturePipelineData data,
EditorMethodsInterface textureEditorMethods)
{
MaterialPropTexture.readyToBuildAtlases = true;
data.allTexturesAreNullAndSameColor = CalculateAllTexturesAreNullAndSameColor(data);
//calculate size of rectangles in atlas
//计算 atlas 矩形尺寸
int _padding = data._atlasPadding;
if (data.distinctMaterialTextures.Count == 1 && data._fixOutOfBoundsUVs == false && data._considerNonTextureProperties == false)
{
Debug.Log("所有游戏物体使用相同的材质.将使用 Original textures .");
_padding = 0;
data.distinctMaterialTextures[0].SetThisIsOnlyTexSetInAtlasTrue();
data.distinctMaterialTextures[0].SetTilingTreatmentAndAdjustEncapsulatingSamplingRect(TextureTilingTreatment.edgeToEdgeXY);
}
Debug.Assert(data.allTexturesAreNullAndSameColor.Length == data.texPropertyNames.Count,
"allTexturesAreNullAndSameColor array must be the same length of texPropertyNames.");
for (int i = 0; i < data.distinctMaterialTextures.Count; i++)
{
Debug.Log("为 TexSet " + i + " of " + data.distinctMaterialTextures.Count + "计算合适的尺寸");
MaterialPropTexturesSet txs = data.distinctMaterialTextures[i];
txs.idealWidth = 1;
txs.idealHeight = 1;
int tWidth = 1;
int tHeight = 1;
Debug.Assert(txs.ts.Length == data.texPropertyNames.Count,
"length of arrays in each element of distinctMaterialTextures must be texPropertyNames.Count");
//在 MaterialPropTexturesSet 中所有 MaterialPropTextures 应为相同尺寸
for (int propIdx = 0; propIdx < data.texPropertyNames.Count; propIdx++)
{
if (_ShouldWeCreateAtlasForThisProperty(propIdx, data._considerNonTextureProperties, data.allTexturesAreNullAndSameColor))
{
MaterialPropTexture matTex = txs.ts[propIdx];
Debug.Log(string.Format("为 texSet {0} ，property {1} 计算合适尺寸", i, data.texPropertyNames[propIdx].name));
if (!matTex.matTilingRect.size.Equals(Vector2.one) && data.distinctMaterialTextures.Count > 1)
{
Debug.LogWarning("Texture " + matTex.GetTexName() + "is tiled by " +
matTex.matTilingRect.size + " tiling will be baked into a texture with maxSize:" +
data._maxTilingBakeSize);
}
if (!txs.obUVscale.Equals(Vector2.one) && data.distinctMaterialTextures.Count > 1 && data._fixOutOfBoundsUVs)
{
Debug.LogWarning("Texture " + matTex.GetTexName() +
" has out of bounds UVs that effectively tile by " + txs.obUVscale +
" tiling will be baked into a texture with maxSize:" + data._maxTilingBakeSize);
}
if (matTex.isNull)
{
txs.SetEncapsulatingRect(propIdx, data._fixOutOfBoundsUVs);
Debug.Log(string.Format("No source texture creating a 16x16 texture for {0} texSet {1} srcMat {2}",
data.texPropertyNames[propIdx].name, i, txs.matsAndGOs.mats[0].GetMaterialName()));
}
if (!matTex.isNull)
{
Vector2 dim = GetAdjustedForScaleAndOffset2Dimensions(matTex, txs.obUVoffset, txs.obUVscale, data);
if ((int)(dim.x * dim.y) > tWidth * tHeight)
{
Debug.Log(" 材质texture " + matTex.GetTexName() + " " + dim + " 需要比" + tWidth + " " + tHeight + "更大的尺寸");
tWidth = (int)dim.x;
tHeight = (int)dim.y;
}
}
}
}
if (data._resizePowerOfTwoTextures)
{
if (tWidth <= _padding * 5)
{
Debug.LogWarning(String.Format("Some of the textures have widths close to the size of the padding. " +
"It is not recommended to use _resizePowerOfTwoTextures with widths this small.", txs.ToString()));
}
if (tHeight <= _padding * 5)
{
Debug.LogWarning(String.Format("Some of the textures have heights close to the size of the padding. " +
"It is not recommended to use _resizePowerOfTwoTextures with heights this small.", txs.ToString()));
}
if (IsPowerOfTwo(tWidth))
{
tWidth -= _padding * 2;
}
if (IsPowerOfTwo(tHeight))
{
tHeight -= _padding * 2;
}
if (tWidth < 1)
{
tWidth = 1;
}
if (tHeight < 1)
{
tHeight = 1;
}
}
Debug.Log("Ideal size is " + tWidth + " " + tHeight);
txs.idealWidth = tWidth;
txs.idealHeight = tHeight;
}
data._atlasPadding = _padding;
yield break;
}
/// <summary>
/// 第一步：
/// 写入 TexturePipelineData 的 MaterialPropTexturesSet 列表，和 usedObjsToMesh 列表
/// 每个TexSet在 Atlas 中都是一个矩形。
/// 如果 allowedMaterialsFilter （过滤器）为空，那么将收集 allObjsToMesh 上的所有材质，usedObjsToMesh 将与allObjsToMesh相同
/// 否则，将仅包括allowedMaterialsFilter中的材料，而usedObjsToMesh将是使用这些材料的objs。
/// </summary>
internal static IEnumerator __Step1_CollectDistinctMatTexturesAndUsedObjects(ProgressUpdateDelegate progressInfo,
CombineTexturesIntoAtlasesCoroutineResult result,
TexturePipelineData data,
EditorMethodsInterface textureEditorMethods,
List <GameObject> usedObjsToMesh)
{
// Collect distinct list of textures to combine from the materials on objsToCombine
// 收集UsedObjects上不同的材质纹理
bool outOfBoundsUVs = false;
Dictionary <int, MeshAnalysisResult[]> meshAnalysisResultsCache = new Dictionary <int, MeshAnalysisResult[]>(); //cache results
for (int i = 0; i < data.allObjsToMesh.Count; i++)
{
GameObject obj = data.allObjsToMesh[i];
//报道进度
if (progressInfo != null)
{
progressInfo("Collecting textures for " + obj, ((float)i) / data.allObjsToMesh.Count / 2f);
}
if (obj == null)
{
Debug.LogError("合并游戏物体列表中包含空物体");
result.success = false;
yield break;
}
Mesh sharedMesh = MeshBakerUtility.GetMesh(obj);
if (sharedMesh == null)
{
Debug.LogError("游戏物体 " + obj.name + " 网格为空");
result.success = false;
yield break;
}
Material[] sharedMaterials = MeshBakerUtility.GetGOMaterials(obj);
if (sharedMaterials.Length == 0)
{
Debug.LogError("游戏物体 " + obj.name + " 材质为空.");
result.success = false;
yield break;
}
//analyze mesh or grab cached result of previous analysis, stores one result for each submesh
//处理网格数据
MeshAnalysisResult[] meshAnalysisResults;//每个游戏物体的主网格子网格数据数组
if (!meshAnalysisResultsCache.TryGetValue(sharedMesh.GetInstanceID(), out meshAnalysisResults))
{
meshAnalysisResults = new MeshAnalysisResult[sharedMesh.subMeshCount];
for (int j = 0; j < sharedMesh.subMeshCount; j++)
{
MeshBakerUtility.hasOutOfBoundsUVs(sharedMesh, ref meshAnalysisResults[j], j);
if (data._normalizeTexelDensity)
{
meshAnalysisResults[j].submeshArea = GetSubmeshArea(sharedMesh, j);
}
if (data._fixOutOfBoundsUVs && !meshAnalysisResults[j].hasUVs)
{
meshAnalysisResults[j].uvRect = new Rect(0, 0, 1, 1);
Debug.LogWarning("Mesh for object " + obj + " has no UV channel but 'consider UVs' is enabled." +
" Assuming UVs will be generated filling 0,0,1,1 rectangle.");
}
}
meshAnalysisResultsCache.Add(sharedMesh.GetInstanceID(), meshAnalysisResults);
}
if (data._fixOutOfBoundsUVs)
{
Debug.Log("Mesh Analysis for object " + obj +
" numSubmesh=" + meshAnalysisResults.Length +
" HasOBUV=" + meshAnalysisResults[0].hasOutOfBoundsUVs +
" UVrectSubmesh0=" + meshAnalysisResults[0].uvRect);
}
//处理材质数据
for (int matIdx = 0; matIdx < sharedMaterials.Length; matIdx++)
{
////for each submesh
//if (progressInfo != null)
//{
// progressInfo(string.Format("Collecting textures for {0} submesh {1}", obj, matIdx),
// ((float)i) / data.allObjsToMesh.Count / 2f);
//}
Material mat = sharedMaterials[matIdx];
// 材质过滤器
if (data.allowedMaterialsFilter != null && !data.allowedMaterialsFilter.Contains(mat))
{
continue;
}
outOfBoundsUVs = outOfBoundsUVs || meshAnalysisResults[matIdx].hasOutOfBoundsUVs;
if (mat.name.Contains("(Instance)"))
{
Debug.LogError("The sharedMaterial on object " + obj.name + " has been 'Instanced'." +
" This was probably caused by a script accessing the meshRender.material property in the editor. " +
" The material to UV Rectangle mapping will be incorrect. " +
"To fix this recreate the object from its prefab or re-assign its material from the correct asset.");
result.success = false;
yield break;
}
if (data._fixOutOfBoundsUVs)
{
if (!MeshBakerUtility.AreAllSharedMaterialsDistinct(sharedMaterials))
{
Debug.LogWarning("游戏物体 " + obj.name + " 使用相同的材质在多个子网格. " +
"可能生成奇怪的 resultAtlasesAndRects，尤其是与 _fixOutOfBoundsUVs 为 true 时");
}
}
//材质属性所用到的 Texutre
MaterialPropTexture[] mts = new MaterialPropTexture[data.texPropertyNames.Count];
for (int propIdx = 0; propIdx < data.texPropertyNames.Count; propIdx++)
{
Texture tx = null;
Vector2 scale = Vector2.one;
Vector2 offset = Vector2.zero;
float texelDensity = 0f;
if (mat.HasProperty(data.texPropertyNames[propIdx].name))
{
Texture txx = GetTextureConsideringStandardShaderKeywords(data.resultMaterial.shader.name, mat, data.texPropertyNames[propIdx].name);
if (txx != null)
{
if (txx is Texture2D)
{
//TextureFormat 验证
tx = txx;
TextureFormat f = ((Texture2D)tx).format;
bool isNormalMap = false;
if (!Application.isPlaying && textureEditorMethods != null)
{
isNormalMap = textureEditorMethods.IsNormalMap((Texture2D)tx);
}
if ((f == TextureFormat.ARGB32 ||
f == TextureFormat.RGBA32 ||
f == TextureFormat.BGRA32 ||
f == TextureFormat.RGB24 ||
f == TextureFormat.Alpha8) && !isNormalMap) //DXT5 does not work
{
//可使用
}
else
{
//TRIED to copy texture using tex2.SetPixels(tex1.GetPixels()) but bug in 3.5 means DTX1 and 5 compressed textures come out skewe
//尝试使用tex2.SetPixels（tex1.GetPixels（））复制纹理，但是3.5中的bug意味着DTX1和5压缩纹理出现扭曲
if (Application.isPlaying && data._packingAlgorithm != PackingAlgorithmEnum.MeshBakerTexturePacker_Fast)
{
Debug.LogWarning("合并列表中，游戏物体 " + obj.name + " 所使用的 Texture " +
tx.name + " 使用的格式 " + f +
"不是: ARGB32, RGBA32, BGRA32, RGB24, Alpha8 或 DXT. " +
"无法在运行时重新设置尺寸" +
"If format says 'compressed' try changing it to 'truecolor'");
result.success = false;
yield break;
}
else
{
tx = (Texture2D)mat.GetTexture(data.texPropertyNames[propIdx].name);
}
}
}
else
{
Debug.LogError("合并列表中，游戏物体 " + obj.name + " 渲染网格使用的 Texture 不是 Texture2D. ");
result.success = false;
yield break;
}
}
//像素密度
if (tx != null && data._normalizeTexelDensity)
{
//不考虑平铺和UV采样超出范围
if (meshAnalysisResults[propIdx].submeshArea == 0)
{
texelDensity = 0f;
}
else
{
texelDensity = (tx.width * tx.height) / (meshAnalysisResults[propIdx].submeshArea);
}
}
//规格，偏移
GetMaterialScaleAndOffset(mat, data.texPropertyNames[propIdx].name, out offset, out scale);
}
mts[propIdx] = new MaterialPropTexture(tx, offset, scale, texelDensity);
}
// 收集材质参数值的平均值
data.nonTexturePropertyBlender.CollectAverageValuesOfNonTextureProperties(data.resultMaterial, mat);
Vector2 obUVscale = new Vector2(meshAnalysisResults[matIdx].uvRect.width, meshAnalysisResults[matIdx].uvRect.height);
Vector2 obUVoffset = new Vector2(meshAnalysisResults[matIdx].uvRect.x, meshAnalysisResults[matIdx].uvRect.y);
//Add to distinct set of textures if not already there
TextureTilingTreatment tilingTreatment = TextureTilingTreatment.none;
if (data._fixOutOfBoundsUVs)
{
tilingTreatment = TextureTilingTreatment.considerUVs;
}
//合并信息 distinctMaterialTextures 数据设置
//材质各参数 Texture，及 UV 偏移数据映射
MaterialPropTexturesSet setOfTexs = new MaterialPropTexturesSet(mts, obUVoffset, obUVscale, tilingTreatment); //one of these per submesh
//材质及各变化参数Rect 数据
MatAndTransformToMerged matt = new MatAndTransformToMerged(new DRect(obUVoffset, obUVscale), data._fixOutOfBoundsUVs, mat);
setOfTexs.matsAndGOs.mats.Add(matt);
MaterialPropTexturesSet setOfTexs2 = data.distinctMaterialTextures.Find(x => x.IsEqual(setOfTexs, data._fixOutOfBoundsUVs, data.nonTexturePropertyBlender));
if (setOfTexs2 != null)
{
setOfTexs = setOfTexs2;
}
else
{
data.distinctMaterialTextures.Add(setOfTexs);
}
if (!setOfTexs.matsAndGOs.mats.Contains(matt))
{
setOfTexs.matsAndGOs.mats.Add(matt);
}
if (!setOfTexs.matsAndGOs.gos.Contains(obj))
{
setOfTexs.matsAndGOs.gos.Add(obj);
//已使用 游戏物体
if (!usedObjsToMesh.Contains(obj))
{
usedObjsToMesh.Add(obj);
}
}
}
}
Debug.Log(string.Format("第一阶段完成;" +
"参与合并的游戏物体的不同材质，各自包含与shader属性对应的不同的纹理，收集到 {0} 组 textures，即 {0} 个不同的材质，" +
"fixOutOfBoundsUV:{1} " +
"considerNonTextureProperties:{2}",
data.distinctMaterialTextures.Count, data._fixOutOfBoundsUVs, data._considerNonTextureProperties));
if (data.distinctMaterialTextures.Count == 0)
{
Debug.LogError("None of the source object materials matched any of the allowed materials for submesh with result material: " + data.resultMaterial);
result.success = false;
yield break;
}
TextureCombinerMerging merger = new TextureCombinerMerging(data._considerNonTextureProperties,
data.nonTexturePropertyBlender, data._fixOutOfBoundsUVs);
merger.MergeOverlappingDistinctMaterialTexturesAndCalcMaterialSubrects(data.distinctMaterialTextures);
yield break;
}
/// <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();
}
}