//posibilities
// using fixOutOfBoundsUVs or not
//
public static void ConfigureMutiMaterialsFromObjsToCombine(MB3_TextureBaker mom, SerializedProperty resultMaterials, SerializedObject textureBaker)
{
if (mom.GetObjectsToCombine().Count == 0)
{
Debug.LogError("You need to add some objects to combine before building the multi material list.");
return;
}
if (resultMaterials.arraySize > 0)
{
Debug.LogError("You already have some source to combined material mappings configured. You must remove these before doing this operation.");
return;
}
if (mom.textureBakeResults == null)
{
Debug.LogError("Texture Bake Result asset must be set before using this operation.");
return;
}
Dictionary <MultiMatSubmeshInfo, List <List <Material> > > shader2Material_map = new Dictionary <MultiMatSubmeshInfo, List <List <Material> > >();
Dictionary <Material, Mesh> obUVobject2mesh_map = new Dictionary <Material, Mesh>();
//validate that the objects to be combined are valid
for (int i = 0; i < mom.GetObjectsToCombine().Count; i++)
{
GameObject go = mom.GetObjectsToCombine()[i];
if (go == null)
{
Debug.LogError("Null object in list of objects to combine at position " + i);
return;
}
Renderer r = go.GetComponent <Renderer>();
if (r == null || (!(r is MeshRenderer) && !(r is SkinnedMeshRenderer)))
{
Debug.LogError("GameObject at position " + i + " in list of objects to combine did not have a renderer");
return;
}
if (r.sharedMaterial == null)
{
Debug.LogError("GameObject at position " + i + " in list of objects to combine has a null material");
return;
}
}
//first pass put any meshes with obUVs on their own submesh if not fixing OB uvs
if (mom.doMultiMaterialSplitAtlasesIfOBUVs)
{
for (int i = 0; i < mom.GetObjectsToCombine().Count; i++)
{
GameObject go = mom.GetObjectsToCombine()[i];
Mesh m = MB_Utility.GetMesh(go);
MB_Utility.MeshAnalysisResult dummyMar = new MB_Utility.MeshAnalysisResult();
Renderer r = go.GetComponent <Renderer>();
for (int j = 0; j < r.sharedMaterials.Length; j++)
{
if (MB_Utility.hasOutOfBoundsUVs(m, ref dummyMar, j))
{
if (!obUVobject2mesh_map.ContainsKey(r.sharedMaterials[j]))
{
Debug.LogWarning("Object " + go + " submesh " + j + " uses UVs outside the range 0,0..1,1 to generate tiling. This object has been mapped to its own submesh in the combined mesh. It can share a submesh with other objects that use different materials if you use the fix out of bounds UVs feature which will bake the tiling");
obUVobject2mesh_map.Add(r.sharedMaterials[j], m);
}
}
}
}
}
//second pass put other materials without OB uvs in a shader to material map
for (int i = 0; i < mom.GetObjectsToCombine().Count; i++)
{
Renderer r = mom.GetObjectsToCombine()[i].GetComponent <Renderer>();
for (int j = 0; j < r.sharedMaterials.Length; j++)
{
if (!obUVobject2mesh_map.ContainsKey(r.sharedMaterials[j]))
{ //if not already added
if (r.sharedMaterials[j] == null)
{
continue;
}
List <List <Material> > binsOfMatsThatUseShader = null;
MultiMatSubmeshInfo newKey = new MultiMatSubmeshInfo(r.sharedMaterials[j].shader, r.sharedMaterials[j]);
if (!shader2Material_map.TryGetValue(newKey, out binsOfMatsThatUseShader))
{
binsOfMatsThatUseShader = new List <List <Material> >();
binsOfMatsThatUseShader.Add(new List <Material>());
shader2Material_map.Add(newKey, binsOfMatsThatUseShader);
}
if (!binsOfMatsThatUseShader[0].Contains(r.sharedMaterials[j]))
{
binsOfMatsThatUseShader[0].Add(r.sharedMaterials[j]);
}
}
}
}
int numResMats = shader2Material_map.Count;
//third pass for each shader grouping check how big the atlas would be and group into bins that would fit in an atlas
if (mom.doMultiMaterialSplitAtlasesIfTooBig)
{
if (mom.packingAlgorithm == MB2_PackingAlgorithmEnum.UnitysPackTextures)
{
Debug.LogWarning("Unity texture packer does not support splitting atlases if too big. Atlases will not be split.");
}
else
{
numResMats = 0;
foreach (MultiMatSubmeshInfo sh in shader2Material_map.Keys)
{
List <List <Material> > binsOfMatsThatUseShader = shader2Material_map[sh];
List <Material> allMatsThatUserShader = binsOfMatsThatUseShader[0];//at this point everything is in the same list
binsOfMatsThatUseShader.RemoveAt(0);
MB3_TextureCombiner combiner = mom.CreateAndConfigureTextureCombiner();
combiner.saveAtlasesAsAssets = false;
if (allMatsThatUserShader.Count > 1)
{
combiner.fixOutOfBoundsUVs = mom.fixOutOfBoundsUVs;
}
else
{
combiner.fixOutOfBoundsUVs = false;
}
// Do the texture pack
List <AtlasPackingResult> packingResults = new List <AtlasPackingResult>();
Material tempMat = new Material(sh.shader);
combiner.CombineTexturesIntoAtlases(null, null, tempMat, mom.GetObjectsToCombine(), allMatsThatUserShader, null, packingResults, true, true);
for (int i = 0; i < packingResults.Count; i++)
{
List <MatsAndGOs> matsData = (List <MatsAndGOs>)packingResults[i].data;
List <Material> mats = new List <Material>();
for (int j = 0; j < matsData.Count; j++)
{
for (int kk = 0; kk < matsData[j].mats.Count; kk++)
{
if (!mats.Contains(matsData[j].mats[kk].mat))
{
mats.Add(matsData[j].mats[kk].mat);
}
}
}
binsOfMatsThatUseShader.Add(mats);
}
numResMats += binsOfMatsThatUseShader.Count;
}
}
}
//build the result materials
if (shader2Material_map.Count == 0 && obUVobject2mesh_map.Count == 0)
{
Debug.LogError("Found no materials in list of objects to combine");
}
mom.resultMaterials = new MB_MultiMaterial[numResMats + obUVobject2mesh_map.Count];
string pth = AssetDatabase.GetAssetPath(mom.textureBakeResults);
string baseName = Path.GetFileNameWithoutExtension(pth);
string folderPath = pth.Substring(0, pth.Length - baseName.Length - 6);
int k = 0;
foreach (MultiMatSubmeshInfo sh in shader2Material_map.Keys)
{
foreach (List <Material> matsThatUse in shader2Material_map[sh])
{
MB_MultiMaterial mm = mom.resultMaterials[k] = new MB_MultiMaterial();
mm.sourceMaterials = matsThatUse;
if (mm.sourceMaterials.Count == 1)
{
mm.considerMeshUVs = false;
}
else
{
mm.considerMeshUVs = mom.fixOutOfBoundsUVs;
}
string matName = folderPath + baseName + "-mat" + k + ".mat";
Material newMat = new Material(Shader.Find("Diffuse"));
if (matsThatUse.Count > 0 && matsThatUse[0] != null)
{
MB3_TextureBaker.ConfigureNewMaterialToMatchOld(newMat, matsThatUse[0]);
}
AssetDatabase.CreateAsset(newMat, matName);
mm.combinedMaterial = (Material)AssetDatabase.LoadAssetAtPath(matName, typeof(Material));
k++;
}
}
foreach (Material m in obUVobject2mesh_map.Keys)
{
MB_MultiMaterial mm = mom.resultMaterials[k] = new MB_MultiMaterial();
mm.sourceMaterials = new List <Material>();
mm.sourceMaterials.Add(m);
mm.considerMeshUVs = false;
string matName = folderPath + baseName + "-mat" + k + ".mat";
Material newMat = new Material(Shader.Find("Diffuse"));
MB3_TextureBaker.ConfigureNewMaterialToMatchOld(newMat, m);
AssetDatabase.CreateAsset(newMat, matName);
mm.combinedMaterial = (Material)AssetDatabase.LoadAssetAtPath(matName, typeof(Material));
k++;
}
MBVersionEditor.UpdateIfDirtyOrScript(textureBaker);
}
//a material can appear more than once in an atlas if using fixOutOfBoundsUVs.
//in this case need to use the UV rect of the mesh to find the correct rectangle.
public bool TryMapMaterialToUVRect(Material mat, Mesh m, int submeshIdx, int idxInResultMats, MB3_MeshCombinerSingle.MeshChannelsCache meshChannelCache, Dictionary <int, MB_Utility.MeshAnalysisResult[]> meshAnalysisCache,
out Rect rectInAtlas,
//out Rect subrectInAtlasMatTiling,
out Rect encapsulatingRect,
out Rect sourceMaterialTilingOut,
ref String errorMsg,
MB2_LogLevel logLevel)
{
if (tbr.materialsAndUVRects.Length == 0 && tbr.materials.Length > 0)
{
errorMsg = "The 'Texture Bake Result' needs to be re-baked to be compatible with this version of Mesh Baker. Please re-bake using the MB3_TextureBaker.";
rectInAtlas = new Rect();
//subrectInAtlasMatTiling = new Rect();
encapsulatingRect = new Rect();
sourceMaterialTilingOut = new Rect();
return(false);
}
if (mat == null)
{
rectInAtlas = new Rect();
//subrectInAtlasMatTiling = new Rect();
encapsulatingRect = new Rect();
sourceMaterialTilingOut = new Rect();
errorMsg = String.Format("Mesh {0} Had no material on submesh {1} cannot map to a material in the atlas", m.name, submeshIdx);
return(false);
}
if (submeshIdx >= m.subMeshCount)
{
errorMsg = "Submesh index is greater than the number of submeshes";
rectInAtlas = new Rect();
//subrectInAtlasMatTiling = new Rect();
encapsulatingRect = new Rect();
sourceMaterialTilingOut = new Rect();
return(false);
}
//find the first index of this material
int idx = -1;
for (int i = 0; i < matsAndSrcUVRect.Length; i++)
{
if (mat == matsAndSrcUVRect[i].material)
{
idx = i;
break;
}
}
// if couldn't find material
if (idx == -1)
{
rectInAtlas = new Rect();
//subrectInAtlasMatTiling = new Rect();
encapsulatingRect = new Rect();
sourceMaterialTilingOut = new Rect();
errorMsg = String.Format("Material {0} could not be found in the Texture Bake Result", mat.name);
return(false);
}
if (!tbr.resultMaterials[idxInResultMats].considerMeshUVs)
{
if (numTimesMatAppearsInAtlas[idx] != 1)
{
Debug.LogError("There is a problem with this TextureBakeResults. FixOutOfBoundsUVs is false and a material appears more than once.");
}
rectInAtlas = matsAndSrcUVRect[idx].atlasRect;
//subrectInAtlasMatTiling = matsAndSrcUVRect[idx].atlasSubrectMaterialOnly;
encapsulatingRect = matsAndSrcUVRect[idx].samplingEncapsulatinRect;
sourceMaterialTilingOut = matsAndSrcUVRect[idx].sourceMaterialTiling;
return(true);
}
else
{
//todo what if no UVs
//Find UV rect in source mesh
MB_Utility.MeshAnalysisResult[] mar;
if (!meshAnalysisCache.TryGetValue(m.GetInstanceID(), out mar))
{
mar = new MB_Utility.MeshAnalysisResult[m.subMeshCount];
for (int j = 0; j < m.subMeshCount; j++)
{
Vector2[] uvss = meshChannelCache.GetUv0Raw(m);
MB_Utility.hasOutOfBoundsUVs(uvss, m, ref mar[j], j);
}
meshAnalysisCache.Add(m.GetInstanceID(), mar);
}
//this could be a mesh that was not used in the texture baking that has huge UV tiling too big for the rect that was baked
//find a record that has an atlas uvRect capable of containing this
bool found = false;
if (logLevel >= MB2_LogLevel.trace)
{
Debug.Log(String.Format("Trying to find a rectangle in atlas capable of holding tiled sampling rect for mesh {0} using material {1} meshUVrect={2}", m, mat, mar[submeshIdx].uvRect.ToString("f5")));
}
for (int i = idx; i < matsAndSrcUVRect.Length; i++)
{
if (matsAndSrcUVRect[i].material == mat)
{
if (IsMeshAndMaterialRectEnclosedByAtlasRect(mar[submeshIdx].uvRect, matsAndSrcUVRect[i].sourceMaterialTiling, matsAndSrcUVRect[i].samplingEncapsulatinRect, logLevel))
{
if (logLevel >= MB2_LogLevel.trace)
{
Debug.Log("Found rect in atlas capable of containing tiled sampling rect for mesh " + m + " at idx=" + i);
}
idx = i;
found = true;
break;
}
}
}
if (found)
{
rectInAtlas = matsAndSrcUVRect[idx].atlasRect;
//subrectInAtlasMatTiling = matsAndSrcUVRect[idx].atlasSubrectMaterialOnly;
encapsulatingRect = matsAndSrcUVRect[idx].samplingEncapsulatinRect;
sourceMaterialTilingOut = matsAndSrcUVRect[idx].sourceMaterialTiling;
return(true);
}
else
{
rectInAtlas = new Rect();
//subrectInAtlasMatTiling = new Rect();
encapsulatingRect = new Rect();
sourceMaterialTilingOut = new Rect();
errorMsg = String.Format("Could not find a tiled rectangle in the atlas capable of containing the uv and material tiling on mesh {0} for material {1}", m.name, mat);
return(false);
}
}
}
//a material can appear more than once in an atlas if using fixOutOfBoundsUVs.
//in this case need to use the UV rect of the mesh to find the correct rectangle.
public bool TryMapMaterialToUVRect(Material mat, Mesh m, int submeshIdx, MB3_MeshCombinerSingle.MeshChannelsCache meshChannelCache, Dictionary <int, MB_Utility.MeshAnalysisResult[]> meshAnalysisCache,
out Rect rectInAtlas, out Rect subrectInAtlasMatTiling, ref String errorMsg)
{
if (tbr.materialsAndUVRects.Length == 0 && tbr.materials.Length > 0)
{
errorMsg = "The 'Material Bake Result' needs to be re-baked to be compatible with this version of Mesh Baker. Please re-bake using the MB3_TextureBaker.";
rectInAtlas = new Rect();
subrectInAtlasMatTiling = new Rect();
return(false);
}
if (mat == null)
{
rectInAtlas = new Rect();
subrectInAtlasMatTiling = new Rect();
errorMsg = String.Format("Mesh {0} Had no material on submesh {1} cannot map to a material in the atlas", m.name, submeshIdx);
return(false);
}
if (submeshIdx >= m.subMeshCount)
{
errorMsg = "Submesh index is greater than the number of submeshes";
rectInAtlas = new Rect();
subrectInAtlasMatTiling = new Rect();
return(false);
}
//find the first index of this material
int idx = -1;
for (int i = 0; i < matsAndSrcUVRect.Length; i++)
{
if (mat == matsAndSrcUVRect[i].material)
{
idx = i;
break;
}
}
// if couldn't find material
if (idx == -1)
{
rectInAtlas = new Rect();
subrectInAtlasMatTiling = new Rect();
errorMsg = String.Format("Material {0} could not be found in the Material Bake Result", mat.name);
return(false);
}
if (!tbr.fixOutOfBoundsUVs)
{
if (numTimesMatAppearsInAtlas[idx] != 1)
{
Debug.LogError("There is a problem with this TextureBakeResults. FixOutOfBoundsUVs is false and a material appears more than once.");
}
rectInAtlas = matsAndSrcUVRect[idx].atlasRect;
subrectInAtlasMatTiling = matsAndSrcUVRect[idx].atlasSubrectMaterialOnly;
return(true);
}
else
{
//todo what if no UVs
//Find UV rect in source mesh
MB_Utility.MeshAnalysisResult[] mar;
if (!meshAnalysisCache.TryGetValue(m.GetInstanceID(), out mar))
{
mar = new MB_Utility.MeshAnalysisResult[m.subMeshCount];
for (int j = 0; j < m.subMeshCount; j++)
{
Vector2[] uvss = meshChannelCache.GetUv0Raw(m);
MB_Utility.hasOutOfBoundsUVs(uvss, m, ref mar[j], j);
}
meshAnalysisCache.Add(m.GetInstanceID(), mar);
}
//this could be a mesh that was not used in the texture baking that has huge UV tiling too big for the rect that was baked
//find a record that has an atlas uvRect capable of containing this
bool found = false;
for (int i = idx; i < matsAndSrcUVRect.Length; i++)
{
if (matsAndSrcUVRect[i].material == mat)
{
//calculate what the UV rect in the atlas would be if we combined the material tiling of this rect with the UV tiling of this submesh
Rect potentialRect = new Rect();
Rect uvR = mar[submeshIdx].uvRect;
Rect matR = matsAndSrcUVRect[i].atlasSubrectMaterialOnly;
potentialRect = MB3_UVTransformUtility.CombineTransforms(ref matR, ref uvR);
//MB3_UVTransformUtility.Canonicalize(ref potentialRect);
// test to see if this would fit in what was baked in the atlas
Rect rr = new Rect(0f, 0f, 1f, 1f);
if (MB3_UVTransformUtility.RectContains(ref rr, ref potentialRect))
{
idx = i;
found = true;
break;
}
}
}
if (found)
{
rectInAtlas = matsAndSrcUVRect[idx].atlasRect;
subrectInAtlasMatTiling = matsAndSrcUVRect[idx].atlasSubrectMaterialOnly;
return(true);
}
else
{
rectInAtlas = new Rect();
subrectInAtlasMatTiling = new Rect();
errorMsg = String.Format("Could not find a tiled rectangle in the atlas capable of containing the uv and material tiling on mesh {0}", m.name);
return(false);
}
}
}