/// <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]);
}
}
// 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));
}
internal static AtlasPackingResult[] RunTexturePackerOnly(TexturePipelineData data,
bool doSplitIntoMultiAtlasIfTooBig,
ITextureCombinerPacker texturePacker)
{
AtlasPackingResult[] apr = texturePacker.CalculateAtlasRectangles(data, doSplitIntoMultiAtlasIfTooBig);
//copy materials PackingResults
for (int i = 0; i < apr.Length; i++)
{
List <MatsAndGOs> matsList = new List <MatsAndGOs>();
apr[i].data = matsList;
for (int j = 0; j < apr[i].srcImgIdxs.Length; j++)
{
MaterialPropTexturesSet ts = data.distinctMaterialTextures[apr[i].srcImgIdxs[j]];
matsList.Add(ts.matsAndGOs);
}
}
return(apr);
}
/// <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;
}
