175 lines
6.7 KiB
C#
175 lines
6.7 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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namespace AmazingAssets.TerrainToMesh.Example
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{
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[RequireComponent(typeof(MeshFilter), typeof(MeshRenderer))]
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public class ExportMeshAndBasemapByPositionIndex : MonoBehaviour
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{
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public TerrainData terrainData;
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public int vertexCountHorizontal = 100;
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public int vertexCountVertical = 100;
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public int mapsResolution = 512;
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public bool exportHoles = false;
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int chunkCountHorizontal = 4;
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int chunkCountVertical = 4;
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[Header("Chunk count is 4x4")]
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[Range(0, 3)]
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public int positionX;
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[Range(0, 3)]
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public int positionY;
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void Start()
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{
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if (terrainData == null)
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return;
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//1. Export mesh from terrain by position///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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Mesh terrainMesh = terrainData.TerrainToMesh().ExportMesh(vertexCountHorizontal, vertexCountVertical, chunkCountHorizontal, chunkCountVertical, positionX, positionY, true, TerrainToMesh.Normal.CalculateFromMesh);
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GetComponent<MeshFilter>().sharedMesh = terrainMesh;
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//2. Export basemap textures by position///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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Texture2D diffuseTexture = terrainData.TerrainToMesh().ExportBasemapDiffuseTexture(mapsResolution, chunkCountHorizontal, chunkCountVertical, positionX, positionY, exportHoles, false); //alpha channel will contain holesmap
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Texture2D normalTexture = terrainData.TerrainToMesh().ExportBasemapNormalTexture(mapsResolution, chunkCountHorizontal, chunkCountVertical, positionX, positionY, false);
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Texture2D maskTexture = null; //Built-in RP terain does not use Maskmaps
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if(Utilities.GetCurrentRenderPipeline() != Utilities.RenderPipeline.Builtin)
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maskTexture = terrainData.TerrainToMesh().ExportBasemapMaskTexture(mapsResolution, chunkCountHorizontal, chunkCountVertical, positionX, positionY, false); //contains metallic(R), occlusion(G) and smoothness(A)
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string shaderName = Utilities.GetUnityDefaultShader(); //Default shader based on used render pipeline
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string mainTexturePropName = Utilities.GetMaterailPropMainTex();
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string bumpMapPropName = Utilities.GetMaterailPropBumpMap();
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string metallicSmoothnessPropName = Utilities.GetMaterailPropMetallicSmoothnessMap();
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//3. Create material and assign exported basemaps/////////////////////////////////////////////////////////////////////////////////////////////////
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Material material = new Material(Shader.Find(shaderName));
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InitializeMaterial(material);
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material.SetTexture(mainTexturePropName, diffuseTexture);
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if (normalTexture != null)
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{
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material.SetTexture(bumpMapPropName, normalTexture);
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material.EnableKeyword("_NORMALMAP");
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}
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if (maskTexture != null)
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{
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material.SetTexture(metallicSmoothnessPropName, maskTexture);
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material.EnableKeyword("_METALLICGLOSSMAP");
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}
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if (exportHoles)
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{
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SetupAlphaTest(material);
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}
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GetComponent<Renderer>().sharedMaterial = material;
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}
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void InitializeMaterial(Material material)
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{
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if (Utilities.GetCurrentRenderPipeline() == Utilities.RenderPipeline.HighDefinition)
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{
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if (material.HasProperty("_DistortionSrcBlend"))
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material.SetFloat("_DistortionSrcBlend", 1);
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if (material.HasProperty("_DistortionDstBlend"))
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material.SetFloat("_DistortionDstBlend", 1);
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if (material.HasProperty("_DistortionBlurSrcBlend"))
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material.SetFloat("_DistortionBlurSrcBlend", 1);
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if (material.HasProperty("_DistortionBlurDstBlend"))
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material.SetFloat("_DistortionBlurDstBlend", 1);
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if (material.HasProperty("_StencilWriteMask"))
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material.SetFloat("_StencilWriteMask", 6);
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if (material.HasProperty("_StencilRefGBuffer"))
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material.SetFloat("_StencilRefGBuffer", 10);
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if (material.HasProperty("_StencilWriteMaskGBuffer"))
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material.SetFloat("_StencilWriteMaskGBuffer", 14);
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if (material.HasProperty("_StencilRefDepth"))
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material.SetFloat("_StencilRefDepth", 8);
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if (material.HasProperty("_StencilRefMV"))
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material.SetFloat("_StencilRefMV", 40);
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if (material.HasProperty("_StencilWriteMaskMV"))
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material.SetFloat("_StencilWriteMaskMV", 40);
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if (material.HasProperty("_ZTestDepthEqualForOpaque"))
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material.SetFloat("_ZTestDepthEqualForOpaque", 3);
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if (material.HasProperty("_ZTestModeDistortion"))
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material.SetFloat("_ZTestModeDistortion", 4);
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material.EnableKeyword("_NORMALMAP_TANGENT_SPACE");
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}
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}
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void SetupAlphaTest(Material material)
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{
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material.EnableKeyword("_ALPHATEST_ON");
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material.renderQueue = (int)UnityEngine.Rendering.RenderQueue.AlphaTest;
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switch (Utilities.GetCurrentRenderPipeline())
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{
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case Utilities.RenderPipeline.Builtin:
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{
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if (material.HasProperty("_Mode"))
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material.SetFloat("_Mode", 1);
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}
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break;
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case Utilities.RenderPipeline.Universal:
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{
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if (material.HasProperty("_AlphaClip"))
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material.SetFloat("_AlphaClip", 1);
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}
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break;
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case Utilities.RenderPipeline.HighDefinition:
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{
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if (material.IsKeywordEnabled("_DISABLE_SSR_TRANSPARENT") == false)
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material.EnableKeyword("_DISABLE_SSR_TRANSPARENT");
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if (material.HasProperty("_AlphaCutoffEnable"))
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material.SetFloat("_AlphaCutoffEnable", 1);
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if (material.HasProperty("_ZTestGBuffer"))
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material.SetFloat("_ZTestGBuffer", 3);
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}
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break;
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default:
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break;
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}
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}
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}
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} |