Exemplo n.º 1
0
        public virtual void Regenerate()
        {
            if (isOriginalInstanced)
            {
                instancedShader = GPUInstancerUtility.CreateInstancedShader(instancedShader, true);
                return;
            }

            Shader originalShader = Shader.Find(name);

            if (originalShader != null)
            {
                instancedShader = GPUInstancerUtility.CreateInstancedShader(originalShader);
                modifiedDate    = DateTime.Now.ToString("MM/dd/yyyy HH:mm:ss.fff",
                                                        System.Globalization.CultureInfo.InvariantCulture);
            }
        }
Exemplo n.º 2
0
 /// <summary>
 /// [EDITOR-ONLY] Shader auto-conversion can be run with this method without using a GPUI Manager
 /// </summary>
 /// <param name="shader">Shader to convert</param>
 /// <returns>True if successful</returns>
 public static bool SetupShaderForGPUI(Shader shader)
 {
     if (shader == null || shader.name == GPUInstancerConstants.SHADER_UNITY_INTERNAL_ERROR)
     {
         Debug.LogError("Can not find shader! Please make sure that the material has a shader assigned.");
         return(false);
     }
     GPUInstancerConstants.gpuiSettings.shaderBindings.ClearEmptyShaderInstances();
     if (!GPUInstancerConstants.gpuiSettings.shaderBindings.IsShadersInstancedVersionExists(shader.name))
     {
         if (GPUInstancerUtility.IsShaderInstanced(shader))
         {
             GPUInstancerConstants.gpuiSettings.shaderBindings.AddShaderInstance(shader.name, shader, true);
             Debug.Log("Shader setup for GPUI has been successfully completed.");
             return(true);
         }
         else
         {
             Shader instancedShader = GPUInstancerUtility.CreateInstancedShader(shader);
             if (instancedShader != null)
             {
                 GPUInstancerConstants.gpuiSettings.shaderBindings.AddShaderInstance(shader.name, instancedShader);
                 return(true);
             }
             else
             {
                 string originalAssetPath = UnityEditor.AssetDatabase.GetAssetPath(shader);
                 if (originalAssetPath.ToLower().EndsWith(".shadergraph"))
                 {
                     Debug.LogError(string.Format(GPUInstancerConstants.ERRORTEXT_shaderGraph, shader.name));
                 }
                 else
                 {
                     Debug.LogError("Can not create instanced version for shader: " + shader.name + ".");
                 }
                 return(false);
             }
         }
     }
     else
     {
         Debug.Log("Shader has already been setup for GPUI.");
         return(true);
     }
 }
Exemplo n.º 3
0
        public virtual void ClearEmptyShaderInstances()
        {
            if (shaderInstances != null)
            {
#if UNITY_EDITOR
                bool modified = false;
                if (shaderBindingsExtensions != null && shaderBindingsExtensions.Count > 0)
                {
                    foreach (GPUInstancerShaderBindingsExtension extension in shaderBindingsExtensions)
                    {
                        modified |= extension.ClearEmptyShaderInstances(shaderInstances);
                    }
                }

                modified |= shaderInstances.RemoveAll(si => si == null || si.instancedShader == null || string.IsNullOrEmpty(si.name)) > 0;
                for (int i = 0; i < shaderInstances.Count; i++)
                {
                    if (shaderInstances[i].isOriginalInstanced || !string.IsNullOrEmpty(shaderInstances[i].extensionCode))
                    {
                        continue;
                    }

                    Shader originalShader = Shader.Find(shaderInstances[i].name);
                    if (!GPUInstancerUtility.IsShaderInstanced(originalShader))
                    {
                        string   originalAssetPath = UnityEditor.AssetDatabase.GetAssetPath(originalShader);
                        DateTime lastWriteTime     = System.IO.File.GetLastWriteTime(originalAssetPath);
                        if (lastWriteTime >= DateTime.Now)
                        {
                            continue;
                        }

                        DateTime instancedTime = DateTime.MinValue;
                        bool     isValidDate   = false;
                        if (!string.IsNullOrEmpty(shaderInstances[i].modifiedDate))
                        {
                            isValidDate = DateTime.TryParseExact(shaderInstances[i].modifiedDate, "MM/dd/yyyy HH:mm:ss.fff", System.Globalization.CultureInfo.InvariantCulture,
                                                                 System.Globalization.DateTimeStyles.None, out instancedTime);
                        }
                        if (!isValidDate || lastWriteTime > Convert.ToDateTime(shaderInstances[i].modifiedDate, System.Globalization.CultureInfo.InvariantCulture))
                        {
                            shaderInstances[i].instancedShader = GPUInstancerUtility.CreateInstancedShader(originalShader);
                            shaderInstances[i].modifiedDate    = DateTime.Now.ToString("MM/dd/yyyy HH:mm:ss.fff",
                                                                                       System.Globalization.CultureInfo.InvariantCulture);
                            modified = true;
                        }
                    }
                    else
                    {
                        shaderInstances[i].isOriginalInstanced = true;
                        modified = true;
                    }
                }

                // remove non unique instances
                List <string> shaderNames = new List <string>();
                foreach (ShaderInstance si in shaderInstances.ToArray())
                {
                    if (shaderNames.Contains(si.name + si.extensionCode))
                    {
                        shaderInstances.Remove(si);
                        modified = true;
                    }
                    else
                    {
                        shaderNames.Add(si.name + si.extensionCode);
                    }
                }

                if (modified)
                {
                    UnityEditor.EditorUtility.SetDirty(this);
                }
#endif
            }
        }
        public static void DrawGPUInstancerPrototypeInfo(GPUInstancerPrototype selectedPrototype, UnityAction <string> DrawHelpText, UnityEngine.Object component, UnityAction OnEditorDataChanged,
                                                         GPUInstancerShaderBindings shaderBindings, GPUInstancerEditorSimulator simulator, GPUInstancerTerrainSettings terrainSettings, int detailLayer)
        {
            GPUInstancerDetailPrototype prototype = (GPUInstancerDetailPrototype)selectedPrototype;

            EditorGUILayout.BeginVertical(GPUInstancerEditorConstants.Styles.box);
            GPUInstancerEditorConstants.DrawCustomLabel(GPUInstancerEditorConstants.TEXT_detailProperties, GPUInstancerEditorConstants.Styles.boldLabel);

            EditorGUI.BeginChangeCheck();

            prototype.detailDensity = EditorGUILayout.Slider(GPUInstancerEditorConstants.TEXT_detailDensity, prototype.detailDensity, 0.0f, terrainSettings.detailDensity);
            DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_detailDensity);
            prototype.detailScale = EditorGUILayout.Vector4Field(GPUInstancerEditorConstants.TEXT_detailScale, prototype.detailScale);
            DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_detailScale);

            prototype.noiseSpread = EditorGUILayout.FloatField(GPUInstancerEditorConstants.TEXT_noiseSpread, prototype.noiseSpread);
            DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_noiseSpread);

            prototype.useCustomHealthyDryNoiseTexture = EditorGUILayout.Toggle(GPUInstancerEditorConstants.TEXT_useCustomHealthyDryNoiseTexture, prototype.useCustomHealthyDryNoiseTexture);
            DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_useCustomHealthyDryNoiseTexture);
            if (prototype.useCustomHealthyDryNoiseTexture)
            {
                prototype.healthyDryNoiseTexture = (Texture2D)EditorGUILayout.ObjectField(GPUInstancerEditorConstants.TEXT_healthyDryNoiseTexture, prototype.healthyDryNoiseTexture, typeof(Texture2D), false);
                DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_healthyDryNoiseTexture);
            }

            if (EditorGUI.EndChangeCheck())
            {
                Undo.RecordObject(component, "Editor data changed.");
                if (OnEditorDataChanged != null)
                {
                    OnEditorDataChanged();
                }
                EditorUtility.SetDirty(prototype);
            }

            EditorGUI.BeginChangeCheck();
            if (!prototype.usePrototypeMesh)
            {
                prototype.useCustomMaterialForTextureDetail = EditorGUILayout.Toggle(GPUInstancerEditorConstants.TEXT_useCustomMaterialForTextureDetail, prototype.useCustomMaterialForTextureDetail);
                DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_useCustomMaterialForTextureDetail);
                if (prototype.useCustomMaterialForTextureDetail)
                {
                    prototype.textureDetailCustomMaterial = (Material)EditorGUILayout.ObjectField(GPUInstancerEditorConstants.TEXT_textureDetailCustomMaterial, prototype.textureDetailCustomMaterial, typeof(Material), false);
                    DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_textureDetailCustomMaterial);
                    prototype.isBillboard = false;
                }
                else
                {
                    prototype.textureDetailCustomMaterial = null;
                }
            }

            EditorGUILayout.EndVertical();

            if (!prototype.usePrototypeMesh && !prototype.isBillboard)
            {
                EditorGUILayout.BeginVertical(GPUInstancerEditorConstants.Styles.box);
                GPUInstancerEditorConstants.DrawCustomLabel(GPUInstancerEditorConstants.TEXT_crossQuads, GPUInstancerEditorConstants.Styles.boldLabel);

                prototype.useCrossQuads = EditorGUILayout.Toggle(GPUInstancerEditorConstants.TEXT_crossQuads, prototype.useCrossQuads);
                DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_crossQuads);

                if (prototype.useCrossQuads)
                {
                    prototype.quadCount = EditorGUILayout.IntSlider(GPUInstancerEditorConstants.TEXT_quadCount, prototype.quadCount, 2, 4);
                    DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_quadCount);

                    if (!prototype.useCustomMaterialForTextureDetail)
                    {
                        prototype.billboardDistance = EditorGUILayout.Slider(GPUInstancerEditorConstants.TEXT_billboardDistance, prototype.billboardDistance, 0.5f, 1f);
                        DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_billboardDistance);
                        prototype.billboardDistanceDebug = EditorGUILayout.Toggle(GPUInstancerEditorConstants.TEXT_billboardDistanceDebug, prototype.billboardDistanceDebug);
                        DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_billboardDistanceDebug);
                        if (prototype.billboardDistanceDebug)
                        {
                            prototype.billboardDistanceDebugColor = EditorGUILayout.ColorField(GPUInstancerEditorConstants.TEXT_billboardDistanceDebugColor, prototype.billboardDistanceDebugColor);
                            DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_billboardDistanceDebugColor);
                        }
                        prototype.billboardFaceCamPos = EditorGUILayout.Toggle(GPUInstancerEditorConstants.TEXT_CQBillboardFaceCamPos, prototype.billboardFaceCamPos);
                        DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_CQBillboardFaceCamPos);
                    }
                }
                else
                {
                    prototype.quadCount = 1;
                }

                EditorGUILayout.EndVertical();
            }
            else
            {
                prototype.useCrossQuads = false;
            }

            if (EditorGUI.EndChangeCheck())
            {
                if (!prototype.usePrototypeMesh && prototype.useCustomMaterialForTextureDetail && prototype.textureDetailCustomMaterial != null)
                {
                    if (!shaderBindings.IsShadersInstancedVersionExists(prototype.textureDetailCustomMaterial.shader.name))
                    {
                        Shader instancedShader;
                        if (GPUInstancerUtility.IsShaderInstanced(prototype.textureDetailCustomMaterial.shader))
                        {
                            instancedShader = prototype.textureDetailCustomMaterial.shader;
                        }
                        else
                        {
                            instancedShader = GPUInstancerUtility.CreateInstancedShader(prototype.textureDetailCustomMaterial.shader, shaderBindings);
                        }

                        if (instancedShader != null)
                        {
                            shaderBindings.AddShaderInstance(prototype.textureDetailCustomMaterial.shader.name, instancedShader);
                        }
                        else
                        {
                            Debug.LogWarning("Can not create instanced version for shader: " + prototype.textureDetailCustomMaterial.shader.name + ". Standard Shader will be used instead.");
                        }
                    }
                }
                EditorUtility.SetDirty(prototype);
            }

            if (!prototype.usePrototypeMesh && !prototype.useCustomMaterialForTextureDetail)
            {
                EditorGUILayout.BeginVertical(GPUInstancerEditorConstants.Styles.box);
                GPUInstancerEditorConstants.DrawCustomLabel(GPUInstancerEditorConstants.TEXT_foliageShaderProperties, GPUInstancerEditorConstants.Styles.boldLabel);

                EditorGUI.BeginChangeCheck();
                prototype.isBillboard = EditorGUILayout.Toggle(GPUInstancerEditorConstants.TEXT_isBillboard, prototype.isBillboard);
                DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_isBillboard);

                if (prototype.isBillboard)
                {
                    prototype.billboardFaceCamPos = EditorGUILayout.Toggle(GPUInstancerEditorConstants.TEXT_billboardFaceCamPos, prototype.billboardFaceCamPos);
                    DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_billboardFaceCamPos);
                }

                if (EditorGUI.EndChangeCheck())
                {
                    EditorUtility.SetDirty(prototype);
                    if (simulator != null && simulator.simulateAtEditor && !simulator.initializingInstances)
                    {
                        GPUInstancerUtility.UpdateDetailInstanceRuntimeDataList(simulator.gpuiManager.runtimeDataList, terrainSettings, false, detailLayer);
                    }
                }

                EditorGUI.BeginChangeCheck();

                prototype.detailHealthyColor = EditorGUILayout.ColorField(GPUInstancerEditorConstants.TEXT_detailHealthyColor, prototype.detailHealthyColor);
                DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_detailHealthyColor);
                prototype.detailDryColor = EditorGUILayout.ColorField(GPUInstancerEditorConstants.TEXT_detailDryColor, prototype.detailDryColor);
                DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_detailDryColor);

                if (EditorGUI.EndChangeCheck())
                {
                    Undo.RecordObject(component, "Editor data changed.");
                    if (OnEditorDataChanged != null)
                    {
                        OnEditorDataChanged();
                    }
                    if (simulator != null && simulator.simulateAtEditor && !simulator.initializingInstances)
                    {
                        GPUInstancerUtility.UpdateDetailInstanceRuntimeDataList(simulator.gpuiManager.runtimeDataList, terrainSettings, false, detailLayer);
                    }
                    EditorUtility.SetDirty(prototype);
                }

                EditorGUI.BeginChangeCheck();

                prototype.ambientOcclusion = EditorGUILayout.Slider(GPUInstancerEditorConstants.TEXT_ambientOcclusion, prototype.ambientOcclusion, 0f, 1f);
                DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_ambientOcclusion);
                prototype.gradientPower = EditorGUILayout.Slider(GPUInstancerEditorConstants.TEXT_gradientPower, prototype.gradientPower, 0f, 1f);
                DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_gradientPower);

                GPUInstancerEditorConstants.DrawCustomLabel(GPUInstancerEditorConstants.TEXT_windSettings, GPUInstancerEditorConstants.Styles.boldLabel);

                prototype.windIdleSway = EditorGUILayout.Slider(GPUInstancerEditorConstants.TEXT_windIdleSway, prototype.windIdleSway, 0f, 1f);
                DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_windIdleSway);
                prototype.windWavesOn = EditorGUILayout.Toggle(GPUInstancerEditorConstants.TEXT_windWavesOn, prototype.windWavesOn);
                DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_windWavesOn);
                if (prototype.windWavesOn)
                {
                    prototype.windWaveTintColor = EditorGUILayout.ColorField(GPUInstancerEditorConstants.TEXT_windWaveTintColor, prototype.windWaveTintColor);
                    DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_windWaveTintColor);
                    prototype.windWaveSize = EditorGUILayout.Slider(GPUInstancerEditorConstants.TEXT_windWaveSize, prototype.windWaveSize, 0f, 1f);
                    DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_windWaveSize);
                    prototype.windWaveTint = EditorGUILayout.Slider(GPUInstancerEditorConstants.TEXT_windWaveTint, prototype.windWaveTint, 0f, 1f);
                    DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_windWaveTint);
                    prototype.windWaveSway = EditorGUILayout.Slider(GPUInstancerEditorConstants.TEXT_windWaveSway, prototype.windWaveSway, 0f, 1f);
                    DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_windWaveSway);
                }
                if (EditorGUI.EndChangeCheck())
                {
                    EditorUtility.SetDirty(prototype);
                    if (simulator != null && simulator.simulateAtEditor && !simulator.initializingInstances)
                    {
                        GPUInstancerUtility.UpdateDetailInstanceRuntimeDataList(simulator.gpuiManager.runtimeDataList, terrainSettings, false, detailLayer);
                    }
                }
                EditorGUILayout.EndVertical();
            }
        }
        public virtual void DrawGPUInstancerPrototypeBillboardSettings(GPUInstancerPrototype selectedPrototype,
                                                                       GPUInstancerShaderBindings shaderBindings, GPUInstancerBillboardAtlasBindings billboardAtlasBindings)
        {
            if (selectedPrototype.isBillboardDisabled || (selectedPrototype is GPUInstancerDetailPrototype && !((GPUInstancerDetailPrototype)selectedPrototype).usePrototypeMesh))
            {
                if (selectedPrototype.useGeneratedBillboard)
                {
                    selectedPrototype.useGeneratedBillboard = false;
                }
                if (selectedPrototype.billboard != null)
                {
                    selectedPrototype.billboard = null;
                }
                return;
            }

            if (Event.current.type == EventType.Repaint && !selectedPrototype.checkedForBillboardExtentions)
            {
                selectedPrototype.checkedForBillboardExtentions = true;
                if (CheckForBillboardExtentions(selectedPrototype, billboardAtlasBindings))
                {
                    return;
                }
            }

            EditorGUILayout.BeginVertical(GPUInstancerEditorConstants.Styles.box);

            GPUInstancerEditorConstants.DrawCustomLabel(GPUInstancerEditorConstants.TEXT_billboardSettings, GPUInstancerEditorConstants.Styles.boldLabel);

            selectedPrototype.useGeneratedBillboard = EditorGUILayout.Toggle(GPUInstancerEditorConstants.TEXT_useGeneratedBillboard, selectedPrototype.useGeneratedBillboard);
            DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_useGeneratedBillboard);

            if (selectedPrototype.useGeneratedBillboard && selectedPrototype.billboard == null)
            {
                selectedPrototype.billboard = new GPUInstancerBillboard();
            }
            else if (!selectedPrototype.useGeneratedBillboard && selectedPrototype.billboard != null)
            {
                if (selectedPrototype.billboard.albedoAtlasTexture != null)
                {
                    billboardAtlasBindings.DeleteBillboardTextures(selectedPrototype);
                }
                if (!selectedPrototype.billboard.useCustomBillboard)
                {
                    selectedPrototype.billboard = null;
                }
            }

            if (selectedPrototype.useGeneratedBillboard)
            {
                if (selectedPrototype.treeType != GPUInstancerTreeType.SpeedTree && selectedPrototype.treeType != GPUInstancerTreeType.TreeCreatorTree && selectedPrototype.treeType != GPUInstancerTreeType.SoftOcclusionTree &&
                    !selectedPrototype.billboard.useCustomBillboard)
                {
                    EditorGUILayout.HelpBox(GPUInstancerEditorConstants.HELPTEXT_unsupportedBillboardWarning, MessageType.Warning);
                }

                bool previousUseCustomBillboard = selectedPrototype.billboard.useCustomBillboard;
                selectedPrototype.billboard.useCustomBillboard = EditorGUILayout.Toggle(GPUInstancerEditorConstants.TEXT_useCustomBillboard, selectedPrototype.billboard.useCustomBillboard);
                DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_useCustomBillboard);

                if (selectedPrototype.billboard.useCustomBillboard)
                {
                    selectedPrototype.billboard.customBillboardMesh = (Mesh)EditorGUILayout.ObjectField(GPUInstancerEditorConstants.TEXT_customBillboardMesh,
                                                                                                        selectedPrototype.billboard.customBillboardMesh, typeof(Mesh), false);
                    selectedPrototype.billboard.customBillboardMaterial = (Material)EditorGUILayout.ObjectField(GPUInstancerEditorConstants.TEXT_customBillboardMaterial,
                                                                                                                selectedPrototype.billboard.customBillboardMaterial, typeof(Material), false);
                    selectedPrototype.billboard.isBillboardShadowCasting = EditorGUILayout.Toggle(GPUInstancerEditorConstants.TEXT_isBillboardShadowCasting,
                                                                                                  selectedPrototype.billboard.isBillboardShadowCasting);

                    if (!previousUseCustomBillboard && selectedPrototype.billboard.albedoAtlasTexture != null)
                    {
                        billboardAtlasBindings.DeleteBillboardTextures(selectedPrototype);
                    }


                    if (shaderBindings != null && selectedPrototype.billboard.customBillboardMaterial != null)
                    {
                        if (!shaderBindings.IsShadersInstancedVersionExists(selectedPrototype.billboard.customBillboardMaterial.shader.name))
                        {
                            Shader instancedShader = GPUInstancerUtility.CreateInstancedShader(selectedPrototype.billboard.customBillboardMaterial.shader, shaderBindings);
                            if (instancedShader != null)
                            {
                                shaderBindings.AddShaderInstance(selectedPrototype.billboard.customBillboardMaterial.shader.name, instancedShader);
                            }
                        }
                    }
                }
                else
                {
                    if (selectedPrototype.billboard.customBillboardInLODGroup)
                    {
                        selectedPrototype.billboard.customBillboardInLODGroup = false;
                    }

                    selectedPrototype.billboard.billboardQuality = (BillboardQuality)EditorGUILayout.Popup(GPUInstancerEditorConstants.TEXT_billboardQuality,
                                                                                                           (int)selectedPrototype.billboard.billboardQuality, GPUInstancerEditorConstants.TEXT_BillboardQualityOptions);
                    DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_billboardQuality);

                    switch (selectedPrototype.billboard.billboardQuality)
                    {
                    case BillboardQuality.Low:
                        selectedPrototype.billboard.atlasResolution = 1024;
                        break;

                    case BillboardQuality.Mid:
                        selectedPrototype.billboard.atlasResolution = 2048;
                        break;

                    case BillboardQuality.High:
                        selectedPrototype.billboard.atlasResolution = 4096;
                        break;

                    case BillboardQuality.VeryHigh:
                        selectedPrototype.billboard.atlasResolution = 8192;
                        break;
                    }

                    selectedPrototype.billboard.frameCount = EditorGUILayout.IntSlider(GPUInstancerEditorConstants.TEXT_billboardFrameCount, selectedPrototype.billboard.frameCount, 8, 32);
                    DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_billboardFrameCount);
                    selectedPrototype.billboard.frameCount = Mathf.NextPowerOfTwo(selectedPrototype.billboard.frameCount);

                    selectedPrototype.billboard.billboardBrightness = EditorGUILayout.Slider(GPUInstancerEditorConstants.TEXT_billboardBrightness, selectedPrototype.billboard.billboardBrightness, 0.0f, 1.0f);
                    DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_billboardBrightness);

                    selectedPrototype.billboard.isOverridingOriginalCutoff = EditorGUILayout.Toggle(GPUInstancerEditorConstants.TEXT_overrideOriginalCutoff, selectedPrototype.billboard.isOverridingOriginalCutoff);
                    if (selectedPrototype.billboard.isOverridingOriginalCutoff)
                    {
                        selectedPrototype.billboard.cutoffOverride = EditorGUILayout.Slider(GPUInstancerEditorConstants.TEXT_overrideCutoffAmount, selectedPrototype.billboard.cutoffOverride, 0.01f, 1.0f);
                    }
                    else
                    {
                        selectedPrototype.billboard.cutoffOverride = -1f;
                    }
                    DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_overrideOriginalCutoff);
                }

                if (!selectedPrototype.billboard.customBillboardInLODGroup)
                {
                    bool hasLODGroup        = selectedPrototype.prefabObject.GetComponent <LODGroup>() != null;
                    bool speedTreeBillboard = selectedPrototype.treeType == GPUInstancerTreeType.SpeedTree && hasLODGroup &&
                                              selectedPrototype.prefabObject.GetComponentInChildren <BillboardRenderer>() != null;
                    if (hasLODGroup && !speedTreeBillboard)
                    {
                        selectedPrototype.billboard.replaceLODCullWithBillboard = EditorGUILayout.Toggle(GPUInstancerEditorConstants.TEXT_replaceLODCull, selectedPrototype.billboard.replaceLODCullWithBillboard);
                        DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_replaceLODCull);
                    }
                    if ((!hasLODGroup || !selectedPrototype.billboard.replaceLODCullWithBillboard) && !speedTreeBillboard)
                    {
                        selectedPrototype.billboard.billboardDistance = EditorGUILayout.Slider(GPUInstancerEditorConstants.TEXT_generatedBillboardDistance, selectedPrototype.billboard.billboardDistance, 0.01f, 1f);
                        DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_generatedBillboardDistance);
                    }
                }

                if (!selectedPrototype.billboard.useCustomBillboard)
                {
                    selectedPrototype.billboard.billboardFaceCamPos = EditorGUILayout.Toggle(GPUInstancerEditorConstants.TEXT_billboardFaceCamPos, selectedPrototype.billboard.billboardFaceCamPos);
                    DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_billboardFaceCamPos);

                    if (selectedPrototype.billboard.albedoAtlasTexture == null)
                    {
                        GPUInstancerUtility.AssignBillboardBinding(selectedPrototype, billboardAtlasBindings);
                    }

                    EditorGUI.BeginDisabledGroup(true);
                    EditorGUILayout.ObjectField(GPUInstancerEditorConstants.TEXT_billboardAlbedo, selectedPrototype.billboard.albedoAtlasTexture, typeof(GameObject), false);
                    EditorGUILayout.ObjectField(GPUInstancerEditorConstants.TEXT_billboardNormal, selectedPrototype.billboard.normalAtlasTexture, typeof(GameObject), false);
                    EditorGUI.EndDisabledGroup();
                }

                GUILayout.Space(10);

                EditorGUILayout.BeginHorizontal();

                if (!selectedPrototype.billboard.useCustomBillboard)
                {
                    GPUInstancerEditorConstants.DrawColoredButton(selectedPrototype.billboard.albedoAtlasTexture == null ?
                                                                  GPUInstancerEditorConstants.Contents.generateBillboard : GPUInstancerEditorConstants.Contents.regenerateBillboard,
                                                                  GPUInstancerEditorConstants.Colors.green, Color.white, FontStyle.Bold, Rect.zero,
                                                                  () =>
                    {
                        GPUInstancerUtility.GeneratePrototypeBillboard(selectedPrototype, billboardAtlasBindings, selectedPrototype.billboard.albedoAtlasTexture != null);
                    });
                }

                if ((!selectedPrototype.billboard.useCustomBillboard && selectedPrototype.billboard.albedoAtlasTexture != null) ||
                    (selectedPrototype.billboard.useCustomBillboard &&
                     selectedPrototype.billboard.customBillboardMesh != null &&
                     selectedPrototype.billboard.customBillboardMaterial != null))
                {
                    GPUInstancerEditorConstants.DrawColoredButton(GPUInstancerEditorConstants.Contents.showBillboard, GPUInstancerEditorConstants.Colors.lightBlue, Color.white, FontStyle.Bold, Rect.zero,
                                                                  () =>
                    {
                        GPUInstancerUtility.ShowBillboardQuad(selectedPrototype, Vector3.zero);
                    });
                }

                EditorGUILayout.EndHorizontal();

                DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_regenerateBillboard);
                DrawHelpText(GPUInstancerEditorConstants.HELPTEXT_showBillboard);
            }

            if (selectedPrototype.useGeneratedBillboard && selectedPrototype.billboard != null && selectedPrototype.billboard.useCustomBillboard && GPUInstancerDefines.billboardExtentions != null && GPUInstancerDefines.billboardExtentions.Count > 0)
            {
                GUILayout.Space(10);

                EditorGUILayout.BeginVertical(GPUInstancerEditorConstants.Styles.box);

                GPUInstancerEditorConstants.DrawCustomLabel("External Billboard Generators", GPUInstancerEditorConstants.Styles.boldLabel);

                GUILayout.Space(5);

                foreach (Extention.GPUInstancerBillboardExtention billboardExtention in GPUInstancerDefines.billboardExtentions)
                {
                    try
                    {
                        EditorGUILayout.BeginHorizontal();
                        GUILayout.Label(billboardExtention.GetTitle(), GPUInstancerEditorConstants.Styles.label);

                        GPUInstancerEditorConstants.DrawColoredButton(new GUIContent(billboardExtention.GetButtonText()), GPUInstancerEditorConstants.Colors.green, Color.white, FontStyle.Bold, Rect.zero,
                                                                      () =>
                        {
                            _redirectObject = billboardExtention.GenerateBillboard(selectedPrototype.prefabObject);
                            selectedPrototype.checkedForBillboardExtentions = false;
                        });
                        EditorGUILayout.EndHorizontal();

                        GUILayout.Space(5);
                    }
                    catch (System.Exception e)
                    {
                        EditorUtility.ClearProgressBar();
                        Debug.LogError("Error generating billboard: " + e.Message + " StackTrace:" + e.StackTrace);
                    }
                }

                EditorGUILayout.EndVertical();
            }

            EditorGUILayout.EndVertical();
        }