557 lines
22 KiB
C#
557 lines
22 KiB
C#
using UnityEngine;
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using System;
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using System.Text;
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using System.Collections;
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using System.Collections.Generic;
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using DigitalOpus.MB.Core;
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using UnityEngine.Serialization;
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/// <summary>
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/// Used internally during the material baking process
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/// </summary>
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[Serializable]
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public class MB_AtlasesAndRects{
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public Texture2D[] atlases;
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[NonSerialized]
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public List<MB_MaterialAndUVRect> mat2rect_map;
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public string[] texPropertyNames;
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}
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[System.Serializable]
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public class MB_MultiMaterial{
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public Material combinedMaterial;
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public bool considerMeshUVs;
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public List<Material> sourceMaterials = new List<Material>();
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}
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[System.Serializable]
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public class MB_MaterialAndUVRect
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{
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/// <summary>
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/// The source material that was baked into the atlas.
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/// </summary>
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public Material material;
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/// <summary>
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/// The rectangle in the atlas where the texture (including all tiling) was copied to.
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/// </summary>
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public Rect atlasRect;
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/// <summary>
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/// For debugging. The name of the first srcObj that uses this MaterialAndUVRect.
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/// </summary>
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public string srcObjName;
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public bool allPropsUseSameTiling = true;
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/// <summary>
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/// Only valid if allPropsUseSameTiling = true. Else should be 0,0,0,0
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/// The material tiling on the source material
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/// </summary>
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[FormerlySerializedAs("sourceMaterialTiling")]
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public Rect allPropsUseSameTiling_sourceMaterialTiling;
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/// <summary>
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/// Only valid if allPropsUseSameTiling = true. Else should be 0,0,0,0
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/// The encapsulating sampling rect that was used to sample for the atlas. Note that the case
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/// of dont-considerMeshUVs is the same as do-considerMeshUVs where the uv rect is 0,0,1,1
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/// </summary>
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[FormerlySerializedAs("samplingEncapsulatinRect")]
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public Rect allPropsUseSameTiling_samplingEncapsulatinRect;
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/// <summary>
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/// Only valid if allPropsUseSameTiling = false.
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/// The UVrect of the source mesh that was baked. We are using a trick here.
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/// Instead of storing the material tiling for each
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/// texture property here, we instead bake all those tilings into the atlases and here we pretend
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/// that all those tilings were 0,0,1,1. Then all we need is to store is the
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/// srcUVsamplingRect
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/// </summary>
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public Rect propsUseDifferntTiling_srcUVsamplingRect;
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/// <summary>
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/// The tilling type for this rectangle in the atlas.
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/// </summary>
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public MB_TextureTilingTreatment tilingTreatment = MB_TextureTilingTreatment.unknown;
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/// <param name="mat">The Material</param>
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/// <param name="destRect">The rect in the atlas this material maps to</param>
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/// <param name="allPropsUseSameTiling">If true then use sourceMaterialTiling and samplingEncapsulatingRect.
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/// if false then use srcUVsamplingRect. None used values should be 0,0,0,0.</param>
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/// <param name="sourceMaterialTiling">allPropsUseSameTiling_sourceMaterialTiling</param>
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/// <param name="samplingEncapsulatingRect">allPropsUseSameTiling_samplingEncapsulatinRect</param>
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/// <param name="srcUVsamplingRect">propsUseDifferntTiling_srcUVsamplingRect</param>
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public MB_MaterialAndUVRect(Material mat,
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Rect destRect,
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bool allPropsUseSameTiling,
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Rect sourceMaterialTiling,
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Rect samplingEncapsulatingRect,
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Rect srcUVsamplingRect,
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MB_TextureTilingTreatment treatment,
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string objName)
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{
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if (allPropsUseSameTiling)
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{
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Debug.Assert(srcUVsamplingRect == new Rect(0, 0, 0, 0));
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}
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if (!allPropsUseSameTiling) {
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Debug.Assert(samplingEncapsulatingRect == new Rect(0, 0, 0, 0));
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Debug.Assert(sourceMaterialTiling == new Rect(0, 0, 0, 0));
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}
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material = mat;
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atlasRect = destRect;
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tilingTreatment = treatment;
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this.allPropsUseSameTiling = allPropsUseSameTiling;
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allPropsUseSameTiling_sourceMaterialTiling = sourceMaterialTiling;
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allPropsUseSameTiling_samplingEncapsulatinRect = samplingEncapsulatingRect;
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propsUseDifferntTiling_srcUVsamplingRect = srcUVsamplingRect;
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srcObjName = objName;
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}
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public override int GetHashCode()
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{
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return material.GetInstanceID() ^ allPropsUseSameTiling_samplingEncapsulatinRect.GetHashCode() ^ propsUseDifferntTiling_srcUVsamplingRect.GetHashCode();
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}
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public override bool Equals(object obj)
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{
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if (!(obj is MB_MaterialAndUVRect)) return false;
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MB_MaterialAndUVRect b = (MB_MaterialAndUVRect)obj;
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return material == b.material &&
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allPropsUseSameTiling_samplingEncapsulatinRect == b.allPropsUseSameTiling_samplingEncapsulatinRect &&
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allPropsUseSameTiling_sourceMaterialTiling == b.allPropsUseSameTiling_sourceMaterialTiling &&
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allPropsUseSameTiling == b.allPropsUseSameTiling &&
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propsUseDifferntTiling_srcUVsamplingRect == b.propsUseDifferntTiling_srcUVsamplingRect;
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}
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public Rect GetEncapsulatingRect()
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{
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if (allPropsUseSameTiling)
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{
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return allPropsUseSameTiling_samplingEncapsulatinRect;
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}
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else
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{
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return propsUseDifferntTiling_srcUVsamplingRect;
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}
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}
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public Rect GetMaterialTilingRect()
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{
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if (allPropsUseSameTiling)
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{
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return allPropsUseSameTiling_sourceMaterialTiling;
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}
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else
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{
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return new Rect(0, 0, 1, 1);
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}
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}
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}
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/// <summary>
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/// This class stores the results from an MB2_TextureBaker when materials are combined into atlases. It stores
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/// a list of materials and the corresponding UV rectangles in the atlases. It also stores the configuration
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/// options that were used to generate the combined material.
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///
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/// It can be saved as an asset in the project so that textures can be baked in one scene and used in another.
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/// </summary>
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public class MB2_TextureBakeResults : ScriptableObject {
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public static int VERSION { get{ return 3252; }}
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public int version;
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public MB_MaterialAndUVRect[] materialsAndUVRects;
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public MB_MultiMaterial[] resultMaterials;
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public bool doMultiMaterial;
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public MB2_TextureBakeResults()
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{
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version = VERSION;
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}
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private void OnEnable()
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{
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// backward compatibility copy depricated fixOutOfBounds values to resultMaterials
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if (version < 3251)
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{
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for (int i = 0; i < materialsAndUVRects.Length; i++)
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{
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materialsAndUVRects[i].allPropsUseSameTiling = true;
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}
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}
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version = VERSION;
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}
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/// <summary>
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/// Creates for materials on renderer.
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/// </summary>
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/// <returns>Generates an MB2_TextureBakeResult that can be used if all objects to be combined use the same material.
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/// Returns a MB2_TextureBakeResults that will map all materials used by renderer r to
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/// the rectangle 0,0..1,1 in the atlas.</returns>
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/// <param name="r">The red component.</param>
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public static MB2_TextureBakeResults CreateForMaterialsOnRenderer(GameObject[] gos, List<Material> matsOnTargetRenderer)
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{
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HashSet<Material> fullMaterialList = new HashSet<Material>(matsOnTargetRenderer);
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for (int i = 0; i < gos.Length; i++)
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{
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if (gos[i] == null)
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{
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Debug.LogError(string.Format("Game object {0} in list of objects to add was null", i));
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return null;
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}
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Material[] oMats = MB_Utility.GetGOMaterials(gos[i]);
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if (oMats.Length == 0)
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{
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Debug.LogError(string.Format("Game object {0} in list of objects to add no renderer", i));
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return null;
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}
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for (int j = 0; j < oMats.Length; j++)
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{
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if (!fullMaterialList.Contains(oMats[j])) { fullMaterialList.Add(oMats[j]); }
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}
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}
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Material[] rms = new Material[fullMaterialList.Count];
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fullMaterialList.CopyTo(rms);
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MB2_TextureBakeResults tbr = (MB2_TextureBakeResults) ScriptableObject.CreateInstance( typeof(MB2_TextureBakeResults) );
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List<MB_MaterialAndUVRect> mss = new List<MB_MaterialAndUVRect>();
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for (int i = 0; i < rms.Length; i++)
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{
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if (rms[i] != null)
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{
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MB_MaterialAndUVRect matAndUVRect = new MB_MaterialAndUVRect(rms[i], new Rect(0f, 0f, 1f, 1f), true, new Rect(0f,0f,1f,1f), new Rect(0f,0f,1f,1f), new Rect(0,0,0,0), MB_TextureTilingTreatment.none, "");
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if (!mss.Contains(matAndUVRect))
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{
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mss.Add(matAndUVRect);
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}
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}
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}
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tbr.resultMaterials = new MB_MultiMaterial[mss.Count];
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for (int i = 0; i < mss.Count; i++){
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tbr.resultMaterials[i] = new MB_MultiMaterial();
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List<Material> sourceMats = new List<Material>();
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sourceMats.Add (mss[i].material);
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tbr.resultMaterials[i].sourceMaterials = sourceMats;
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tbr.resultMaterials[i].combinedMaterial = mss[i].material;
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tbr.resultMaterials[i].considerMeshUVs = false;
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}
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if (rms.Length == 1)
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{
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tbr.doMultiMaterial = false;
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} else
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{
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tbr.doMultiMaterial = true;
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}
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tbr.materialsAndUVRects = mss.ToArray();
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return tbr;
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}
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public bool DoAnyResultMatsUseConsiderMeshUVs()
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{
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if (resultMaterials == null) return false;
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for (int i = 0; i < resultMaterials.Length; i++)
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{
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if (resultMaterials[i].considerMeshUVs) return true;
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}
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return false;
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}
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public bool ContainsMaterial(Material m)
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{
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for (int i = 0; i < materialsAndUVRects.Length; i++)
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{
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if (materialsAndUVRects[i].material == m){
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return true;
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}
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}
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return false;
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}
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public string GetDescription(){
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StringBuilder sb = new StringBuilder();
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sb.Append("Shaders:\n");
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HashSet<Shader> shaders = new HashSet<Shader>();
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if (materialsAndUVRects != null){
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for (int i = 0; i < materialsAndUVRects.Length; i++){
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if (materialsAndUVRects[i].material != null)
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{
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shaders.Add(materialsAndUVRects[i].material.shader);
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}
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}
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}
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foreach(Shader m in shaders){
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sb.Append(" ").Append(m.name).AppendLine();
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}
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sb.Append("Materials:\n");
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if (materialsAndUVRects != null){
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for (int i = 0; i < materialsAndUVRects.Length; i++){
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if (materialsAndUVRects[i].material != null)
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{
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sb.Append(" ").Append(materialsAndUVRects[i].material.name).AppendLine();
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}
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}
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}
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return sb.ToString();
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}
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public class Material2AtlasRectangleMapper
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{
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MB2_TextureBakeResults tbr;
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int[] numTimesMatAppearsInAtlas;
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MB_MaterialAndUVRect[] matsAndSrcUVRect;
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public Material2AtlasRectangleMapper(MB2_TextureBakeResults res)
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{
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tbr = res;
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matsAndSrcUVRect = res.materialsAndUVRects;
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//count the number of times a material appears in the atlas. used for fast lookup
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numTimesMatAppearsInAtlas = new int[matsAndSrcUVRect.Length];
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for (int i = 0; i < matsAndSrcUVRect.Length; i++)
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{
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if (numTimesMatAppearsInAtlas[i] > 1)
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{
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continue;
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}
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int count = 1;
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for (int j = i + 1; j < matsAndSrcUVRect.Length; j++)
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{
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if (matsAndSrcUVRect[i].material == matsAndSrcUVRect[j].material)
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{
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count++;
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}
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}
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numTimesMatAppearsInAtlas[i] = count;
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if (count > 1)
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{
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//allMatsAreUnique = false;
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for (int j = i + 1; j < matsAndSrcUVRect.Length; j++)
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{
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if (matsAndSrcUVRect[i].material == matsAndSrcUVRect[j].material)
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{
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numTimesMatAppearsInAtlas[j] = count;
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}
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}
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}
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}
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}
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/// <summary>
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/// A material can appear more than once in an atlas if using fixOutOfBoundsUVs.
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/// in this case you need to use the UV rect of the mesh to find the correct rectangle.
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/// If the all properties on the mat use the same tiling then
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/// encapsulatingRect can be larger and will include baked UV and material tiling
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/// If mat uses different tiling for different maps then encapsulatingRect is the uvs of
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/// source mesh used to bake atlas and sourceMaterialTilingOut is 0,0,1,1. This works because
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/// material tiling was baked into the atlas.
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/// </summary>
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public bool TryMapMaterialToUVRect(Material mat, Mesh m, int submeshIdx, int idxInResultMats, MB3_MeshCombinerSingle.MeshChannelsCache meshChannelCache, Dictionary<int, MB_Utility.MeshAnalysisResult[]> meshAnalysisCache,
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out MB_TextureTilingTreatment tilingTreatment,
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out Rect rectInAtlas,
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out Rect encapsulatingRectOut,
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out Rect sourceMaterialTilingOut,
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ref String errorMsg,
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MB2_LogLevel logLevel)
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{
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if (tbr.version < VERSION)
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{
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UpgradeToCurrentVersion(tbr);
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}
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tilingTreatment = MB_TextureTilingTreatment.unknown;
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if (tbr.materialsAndUVRects.Length == 0)
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{
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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.";
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rectInAtlas = new Rect();
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encapsulatingRectOut = new Rect();
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sourceMaterialTilingOut = new Rect();
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return false;
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}
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if (mat == null)
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{
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rectInAtlas = new Rect();
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encapsulatingRectOut = new Rect();
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sourceMaterialTilingOut = new Rect();
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errorMsg = String.Format("Mesh {0} Had no material on submesh {1} cannot map to a material in the atlas", m.name, submeshIdx);
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return false;
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}
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if (submeshIdx >= m.subMeshCount)
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{
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errorMsg = "Submesh index is greater than the number of submeshes";
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rectInAtlas = new Rect();
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encapsulatingRectOut = new Rect();
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sourceMaterialTilingOut = new Rect();
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return false;
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}
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//find the first index of this material
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int idx = -1;
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for (int i = 0; i < matsAndSrcUVRect.Length; i++)
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{
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if (mat == matsAndSrcUVRect[i].material)
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{
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idx = i;
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break;
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}
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}
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// if couldn't find material
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if (idx == -1)
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{
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rectInAtlas = new Rect();
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encapsulatingRectOut = new Rect();
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sourceMaterialTilingOut = new Rect();
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errorMsg = String.Format("Material {0} could not be found in the Texture Bake Result", mat.name);
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return false;
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}
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if (!tbr.resultMaterials[idxInResultMats].considerMeshUVs)
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{
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if (numTimesMatAppearsInAtlas[idx] != 1)
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{
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Debug.LogError("There is a problem with this TextureBakeResults. FixOutOfBoundsUVs is false and a material appears more than once.");
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}
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MB_MaterialAndUVRect mr = matsAndSrcUVRect[idx];
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rectInAtlas = mr.atlasRect;
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tilingTreatment = mr.tilingTreatment;
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encapsulatingRectOut = mr.GetEncapsulatingRect();
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sourceMaterialTilingOut = mr.GetMaterialTilingRect();
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return true;
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}
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else
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{
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//todo what if no UVs
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//Find UV rect in source mesh
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MB_Utility.MeshAnalysisResult[] mar;
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if (!meshAnalysisCache.TryGetValue(m.GetInstanceID(), out mar))
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{
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mar = new MB_Utility.MeshAnalysisResult[m.subMeshCount];
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for (int j = 0; j < m.subMeshCount; j++)
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{
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Vector2[] uvss = meshChannelCache.GetUv0Raw(m);
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MB_Utility.hasOutOfBoundsUVs(uvss, m, ref mar[j], j);
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}
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meshAnalysisCache.Add(m.GetInstanceID(), mar);
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}
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//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
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//find a record that has an atlas uvRect capable of containing this
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bool found = false;
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Rect encapsulatingRect = new Rect(0,0,0,0);
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Rect sourceMaterialTiling = new Rect(0,0,0,0);
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if (logLevel >= MB2_LogLevel.trace)
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{
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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")));
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}
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for (int i = idx; i < matsAndSrcUVRect.Length; i++)
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{
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MB_MaterialAndUVRect matAndUVrect = matsAndSrcUVRect[i];
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if (matAndUVrect.material == mat)
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{
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if (matAndUVrect.allPropsUseSameTiling)
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{
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encapsulatingRect = matAndUVrect.allPropsUseSameTiling_samplingEncapsulatinRect;
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sourceMaterialTiling = matAndUVrect.allPropsUseSameTiling_sourceMaterialTiling;
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}
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else
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{
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encapsulatingRect = matAndUVrect.propsUseDifferntTiling_srcUVsamplingRect;
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sourceMaterialTiling = new Rect(0, 0, 1, 1);
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}
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if (IsMeshAndMaterialRectEnclosedByAtlasRect(
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matAndUVrect.tilingTreatment,
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mar[submeshIdx].uvRect,
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sourceMaterialTiling,
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encapsulatingRect,
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logLevel))
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{
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if (logLevel >= MB2_LogLevel.trace)
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{
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Debug.Log("Found rect in atlas capable of containing tiled sampling rect for mesh " + m + " at idx=" + i);
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}
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idx = i;
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found = true;
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break;
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}
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}
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}
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if (found)
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{
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MB_MaterialAndUVRect mr = matsAndSrcUVRect[idx];
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rectInAtlas = mr.atlasRect;
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tilingTreatment = mr.tilingTreatment;
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encapsulatingRectOut = mr.GetEncapsulatingRect();
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sourceMaterialTilingOut = mr.GetMaterialTilingRect();
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
rectInAtlas = new Rect();
|
|
encapsulatingRectOut = 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}. Was this mesh included when atlases were baked?", m.name, mat);
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
private void UpgradeToCurrentVersion(MB2_TextureBakeResults tbr)
|
|
{
|
|
if (tbr.version < 3252)
|
|
{
|
|
for (int i = 0; i < tbr.materialsAndUVRects.Length; i++)
|
|
{
|
|
tbr.materialsAndUVRects[i].allPropsUseSameTiling = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public static bool IsMeshAndMaterialRectEnclosedByAtlasRect(MB_TextureTilingTreatment tilingTreatment, Rect uvR, Rect sourceMaterialTiling, Rect samplingEncapsulatinRect, MB2_LogLevel logLevel)
|
|
{
|
|
Rect potentialRect = new Rect();
|
|
// test to see if this would fit in what was baked in the atlas
|
|
|
|
potentialRect = MB3_UVTransformUtility.CombineTransforms(ref uvR, ref sourceMaterialTiling);
|
|
if (logLevel >= MB2_LogLevel.trace)
|
|
{
|
|
if (logLevel >= MB2_LogLevel.trace) Debug.Log("IsMeshAndMaterialRectEnclosedByAtlasRect Rect in atlas uvR=" + uvR.ToString("f5") + " sourceMaterialTiling=" + sourceMaterialTiling.ToString("f5") + "Potential Rect (must fit in encapsulating) " + potentialRect.ToString("f5") + " encapsulating=" + samplingEncapsulatinRect.ToString("f5") + " tilingTreatment=" + tilingTreatment);
|
|
}
|
|
|
|
if (tilingTreatment == MB_TextureTilingTreatment.edgeToEdgeX)
|
|
{
|
|
if (MB3_UVTransformUtility.LineSegmentContainsShifted(samplingEncapsulatinRect.y, samplingEncapsulatinRect.height, potentialRect.y, potentialRect.height))
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
else if (tilingTreatment == MB_TextureTilingTreatment.edgeToEdgeY)
|
|
{
|
|
if (MB3_UVTransformUtility.LineSegmentContainsShifted(samplingEncapsulatinRect.x, samplingEncapsulatinRect.width, potentialRect.x, potentialRect.width))
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
else if (tilingTreatment == MB_TextureTilingTreatment.edgeToEdgeXY)
|
|
{
|
|
//only one rect in atlas and is edge to edge in both X and Y directions.
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
if (MB3_UVTransformUtility.RectContainsShifted(ref samplingEncapsulatinRect, ref potentialRect))
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
} |