internal static void BuildAtlas( AtlasPackingResult packedAtlasRects, List <MB_TexSet> distinctMaterialTextures, int propIdx, int atlasSizeX, int atlasSizeY, Mesh m, List <Material> generatedMats, ShaderTextureProperty property, MB3_TextureCombinerPipeline.TexturePipelineData data, MB3_TextureCombiner combiner, MB2_EditorMethodsInterface textureEditorMethods, MB2_LogLevel LOG_LEVEL) { // Collect vertices and quads for mesh that we will use for the atlas. Debug.Assert(generatedMats.Count == 0, "Previous mats should have been destroyed"); generatedMats.Clear(); List <Vector3> vs = new List <Vector3>(); List <Vector2> uvs = new List <Vector2>(); // One submesh and material per texture that we are packing List <int>[] ts = new List <int> [distinctMaterialTextures.Count]; for (int i = 0; i < ts.Length; i++) { ts[i] = new List <int>(); } MeshBakerMaterialTexture.readyToBuildAtlases = true; GC.Collect(); MB3_TextureCombinerPackerRoot.CreateTemporaryTexturesForAtlas(data.distinctMaterialTextures, combiner, propIdx, data); Rect[] uvRects = packedAtlasRects.rects; for (int texSetIdx = 0; texSetIdx < distinctMaterialTextures.Count; texSetIdx++) { MB_TexSet texSet = distinctMaterialTextures[texSetIdx]; MeshBakerMaterialTexture matTex = texSet.ts[propIdx]; if (LOG_LEVEL >= MB2_LogLevel.trace) { Debug.Log(string.Format("Adding texture {0} to atlas {1} for texSet {2} srcMat {3}", matTex.GetTexName(), property.name, texSetIdx, texSet.matsAndGOs.mats[0].GetMaterialName())); } Rect r = uvRects[texSetIdx]; Texture2D t = matTex.GetTexture2D(); int x = Mathf.RoundToInt(r.x * atlasSizeX); int y = Mathf.RoundToInt(r.y * atlasSizeY); int ww = Mathf.RoundToInt(r.width * atlasSizeX); int hh = Mathf.RoundToInt(r.height * atlasSizeY); r = new Rect(x, y, ww, hh); if (ww == 0 || hh == 0) { Debug.LogError("Image in atlas has no height or width " + r); } DRect samplingRect = texSet.ts[propIdx].GetEncapsulatingSamplingRect(); Debug.Assert(!texSet.ts[propIdx].isNull, string.Format("Adding texture {0} to atlas {1} for texSet {2} srcMat {3}", matTex.GetTexName(), property.name, texSetIdx, texSet.matsAndGOs.mats[0].GetMaterialName())); AtlasPadding padding = packedAtlasRects.padding[texSetIdx]; AddNineSlicedRect(r, padding.leftRight, padding.topBottom, samplingRect.GetRect(), vs, uvs, ts[texSetIdx], t.width, t.height, t.name); Material mt = new Material(Shader.Find("MeshBaker/Unlit/UnlitWithAlpha")); bool isSavingAsANormalMapAssetThatWillBeImported = property.isNormalMap && data._saveAtlasesAsAssets; MBVersion.PipelineType pipelineType = MBVersion.DetectPipeline(); if (pipelineType == MBVersion.PipelineType.URP) { ConfigureMaterial_DefaultPipeline(mt, t, isSavingAsANormalMapAssetThatWillBeImported, LOG_LEVEL); //ConfigureMaterial_URP(mt, t, isSavingAsANormalMapAssetThatWillBeImported, LOG_LEVEL); } else if (pipelineType == MBVersion.PipelineType.HDRP) { ConfigureMaterial_DefaultPipeline(mt, t, isSavingAsANormalMapAssetThatWillBeImported, LOG_LEVEL); } else { ConfigureMaterial_DefaultPipeline(mt, t, isSavingAsANormalMapAssetThatWillBeImported, LOG_LEVEL); } generatedMats.Add(mt); } // Apply to the mesh m.Clear(); m.vertices = vs.ToArray(); m.uv = uvs.ToArray(); m.subMeshCount = ts.Length; for (int i = 0; i < m.subMeshCount; i++) { m.SetIndices(ts[i].ToArray(), MeshTopology.Triangles, i); } MeshBakerMaterialTexture.readyToBuildAtlases = false; }