public void CollectInfos()
{
TerrainData terrainData = terrain.terrainData;
Texture2D baseTexture = TerrainToMeshTool.BakeBaseTexture(terrain.terrainData);
List <Material> matAdd = new List <Material>();
List <Material> matFirst = new List <Material>();
Material matBase = new Material(shaderBase);
matBase.SetTexture("_MainTex", baseTexture);
float[,] heights = terrain.terrainData.GetHeights(0, 0, terrain.terrainData.heightmapWidth, terrain.terrainData.heightmapHeight);
Texture2DArray texArray = null;
Material terrainMaterial = new Material(Shader.Find("Nature/Terrain/Diffuse"));
if (layerType == LayerType.SingleMesh_LayerIndexTexture)
{
bakedControlTexture = TerrainToMeshTool.BakeTextureIndex(terrain.terrainData);
{
Texture firstTexture = terrainData.splatPrototypes[0].texture;
texArray = new Texture2DArray(firstTexture.width, firstTexture.height, terrainData.splatPrototypes.Length, TextureFormat.ARGB32, true, true);
for (int i = 0; i < terrainData.splatPrototypes.Length; i++)
{
texArray.SetPixels32(terrainData.splatPrototypes[i].texture.GetPixels32(), i);
}
texArray.Apply();
}
if (terrainTextureIndexMaterial == null)
{
terrainTextureIndexMaterial = new Material(Shader.Find("Mobile/TerrainTextureIndex"));
}
else
{
terrainTextureIndexMaterial.shader = Shader.Find("Mobile/TerrainTextureIndex");
}
terrainTextureIndexMaterial.SetTexture("_IndexControl", bakedControlTexture);
terrainTextureIndexMaterial.SetTexture("_TexArray", texArray);
terrainTextureIndexMaterial.SetFloat("_TexArrayNum", terrainData.splatPrototypes.Length);
terrainTextureIndexMaterial.SetVectorArray("_ScaleOffset", GetScaleOffsets(terrainData));
}
else if (layerType == LayerType.SingleMesh_Max4Layer)
{
bakedControlTexture = TerrainToMeshTool.BakeControlTexture(terrain.terrainData, roots[0], gridSize, 4);
}
else
{
for (int l = 0; l < terrainData.alphamapLayers; l++)
{
LayerProperty lp = l < layerProperties.Length ? layerProperties[l] : null;
matAdd.Add(TerrainToMeshTool.GetMaterial(terrain, l, shaderAdd, lp));
matFirst.Add(TerrainToMeshTool.GetMaterial(terrain, l, shaderFirst, lp));
}
}
int w = terrainData.heightmapWidth - 1;
int gridNumX = w / gridSize;
tiles = new TerrainToMeshTile[gridNumX * gridNumX];
for (int x = 0; x < gridNumX; x++)
{
for (int y = 0; y < gridNumX; y++)
{
GameObject objGrid = new GameObject("mesh_" + x + "_" + y);
objGrid.transform.SetParent(GetRootTransform(), false);
TerrainToMeshTile tile = objGrid.AddComponent <TerrainToMeshTile>();
tiles[y * gridNumX + x] = tile;
tile.matBase = matBase;
tile.matAdd = matAdd;
tile.matFirst = matFirst;
tile.lodLevel = -1;
tile.terrainData = terrainData;
tile.heights = heights;
tile.roots = roots;
tile.trees = new Node[roots.Length];
tile.layerType = layerType;
tile.lodPower = lodPower;
tile.terrainMaterial = terrainMaterial;
tile.bakedControlTexture = bakedControlTexture;
tile.terrainTextureIndexMaterial = terrainTextureIndexMaterial;
tile.texArray = texArray;
for (int lod = 0; lod < roots.Length; lod++)
{
tile.trees[lod] = roots[lod].FindSizeNode(x * gridSize, y * gridSize, gridSize);
TerrainToMeshTool.SetNodeSkirts(tile.trees[lod], tile.trees[lod]);
}
}
}
for (int x = 0; x < gridNumX; x++)
{
for (int y = 0; y < gridNumX; y++)
{
tiles[y * gridNumX + x].CollectMeshInfo(maxLodLevel);
}
}
}
public static Material GetMaterial(Terrain terrain, int layer, Shader shader, LayerProperty property)
{
TerrainData td = terrain.terrainData;
Material mat;
if (layer != -1)
{
mat = new Material(shader);
mat.SetTexture("_Splat0", td.splatPrototypes[layer].texture);
mat.SetTexture("_Normal0", td.splatPrototypes[layer].normalMap);
Vector2 tileSize = td.splatPrototypes[layer].tileSize;
mat.SetTextureScale("_Splat0", new Vector2(td.size.x / tileSize.x, td.size.z / tileSize.y));
mat.SetTextureOffset("_Splat0", td.splatPrototypes[layer].tileOffset);
mat.SetTexture("_Control", td.alphamapTextures[layer / 4]);
//mat.SetTexture("unity_Lightmap", LightmapSettings.lightmaps[terrain.lightmapIndex].lightmapColor);
mat.SetFloat("_SplatIndex", layer % 4);
mat.EnableKeyword("_MESH_TERRAIN");
if (property != null)
{
if (property.simpleLayer)
{
mat.EnableKeyword("_SIMPLE_LAYER");
}
else
{
mat.DisableKeyword("_SIMPLE_LAYER");
}
}
}
else
{
mat = new Material(Shader.Find("Diffuse"));
}
return(mat);
}
