using UnityEditor.AssetImporters; using UnityEditor.Experimental; using UnityEngine; using UnityEditor.Experimental.AssetImporters; namespace UnityEditor.Rendering.Universal { class PhysicalMaterial3DsMaxPreprocessor : AssetPostprocessor { static readonly uint k_Version = 1; static readonly int k_Order = 4; static readonly string k_ShaderPath = "Packages/com.unity.render-pipelines.universal/Runtime/Materials/PhysicalMaterial3DsMax/PhysicalMaterial3DsMax.ShaderGraph"; static readonly string k_ShaderTransparentPath = "Packages/com.unity.render-pipelines.universal/Runtime/Materials/PhysicalMaterial3DsMax/PhysicalMaterial3DsMaxTransparent.ShaderGraph"; public override uint GetVersion() { return k_Version; } public override int GetPostprocessOrder() { return k_Order; } static bool Is3DsMaxPhysicalMaterial(MaterialDescription description) { float classIdA; float classIdB; description.TryGetProperty("ClassIDa", out classIdA); description.TryGetProperty("ClassIDb", out classIdB); return classIdA == 1030429932 && classIdB == -559038463; } public void OnPreprocessMaterialDescription(MaterialDescription description, Material material, AnimationClip[] clips) { if (Is3DsMaxPhysicalMaterial(description)) { CreateFrom3DsPhysicalMaterial(description, material, clips); } } void CreateFrom3DsPhysicalMaterial(MaterialDescription description, Material material, AnimationClip[] clips) { float floatProperty; Vector4 vectorProperty; TexturePropertyDescription textureProperty; Shader shader; description.TryGetProperty("transparency", out floatProperty); bool hasTransparencyMap = description.TryGetProperty("transparency_map", out textureProperty); if (floatProperty > 0.0f || hasTransparencyMap) { shader = AssetDatabase.LoadAssetAtPath(k_ShaderTransparentPath); if (shader == null) return; material.shader = shader; if (hasTransparencyMap) { material.SetTexture("_TRANSPARENCY_MAP", textureProperty.texture); material.SetFloat("_TRANSPARENCY", 1.0f); } else { material.SetFloat("_TRANSPARENCY", floatProperty); } } else { shader = AssetDatabase.LoadAssetAtPath(k_ShaderPath); if (shader == null) return; material.shader = shader; } foreach (var clip in clips) { clip.ClearCurves(); } RemapPropertyFloat(description, material, "base_weight", "_BASE_COLOR_WEIGHT"); if (description.TryGetProperty("base_color_map", out textureProperty)) { SetMaterialTextureProperty("_BASE_COLOR_MAP", material, textureProperty); } else if (description.TryGetProperty("base_color", out vectorProperty)) { if (QualitySettings.activeColorSpace == ColorSpace.Gamma) { vectorProperty.x = Mathf.LinearToGammaSpace(vectorProperty.x); vectorProperty.y = Mathf.LinearToGammaSpace(vectorProperty.y); vectorProperty.z = Mathf.LinearToGammaSpace(vectorProperty.z); vectorProperty.w = Mathf.LinearToGammaSpace(vectorProperty.w); } material.SetColor("_BASE_COLOR", vectorProperty); } RemapPropertyFloat(description, material, "reflectivity", "_REFLECTIONS_WEIGHT"); RemapPropertyTextureOrColor(description, material, "refl_color", "_REFLECTIONS_COLOR"); RemapPropertyTextureOrFloat(description, material, "metalness", "_METALNESS"); RemapPropertyTextureOrFloat(description, material, "roughness", "_REFLECTIONS_ROUGHNESS"); RemapPropertyTextureOrFloat(description, material, "trans_ior", "_REFLECTIONS_IOR"); RemapPropertyFloat(description, material, "emission", "_EMISSION_WEIGHT"); RemapPropertyTextureOrColor(description, material, "emit_color", "_EMISSION_COLOR"); RemapPropertyFloat(description, material, "bump_map_amt", "_BUMP_MAP_STRENGTH"); RemapPropertyTexture(description, material, "bump_map", "_BUMP_MAP"); } static void SetMaterialTextureProperty(string propertyName, Material material, TexturePropertyDescription textureProperty) { material.SetTexture(propertyName, textureProperty.texture); material.SetTextureOffset(propertyName, textureProperty.offset); material.SetTextureScale(propertyName, textureProperty.scale); } static void RemapPropertyFloat(MaterialDescription description, Material material, string inPropName, string outPropName) { if (description.TryGetProperty(inPropName, out float floatProperty)) { material.SetFloat(outPropName, floatProperty); } } static void RemapPropertyTexture(MaterialDescription description, Material material, string inPropName, string outPropName) { if (description.TryGetProperty(inPropName, out TexturePropertyDescription textureProperty)) { material.SetTexture(outPropName, textureProperty.texture); } } static void RemapPropertyTextureOrColor(MaterialDescription description, Material material, string inPropName, string outPropName) { if (description.TryGetProperty(inPropName + "_map", out TexturePropertyDescription textureProperty)) { material.SetTexture(outPropName + "_MAP", textureProperty.texture); material.SetColor(outPropName, Color.white); } else if(description.TryGetProperty(inPropName, out Vector4 color)) { material.SetColor(outPropName, color); } } static void RemapPropertyTextureOrFloat(MaterialDescription description, Material material, string inPropName, string outPropName) { if (description.TryGetProperty(inPropName + "_map", out TexturePropertyDescription textureProperty)) { material.SetTexture(outPropName + "_MAP", textureProperty.texture); material.SetFloat(outPropName, 1.0f); } else if(description.TryGetProperty(inPropName, out float floatProperty)) { material.SetFloat(outPropName, floatProperty); } } } }