public static void UpdateCombinerCache(TerrainCombiner combiner)
{
TerrainData terrainData = combiner.GetComponent <Terrain>().terrainData;
// Update target materials from sources
List <SplatPrototype> targetSplatList = new List <SplatPrototype>();
for (int i = 0; i < combiner.Instances.Length; i++)
{
TerrainCombinerInstance sourceData = combiner.Instances[i];
if (sourceData.source == null)
{
continue;
}
Terrain sourceTerrain = sourceData.source.GetComponent <Terrain>();
foreach (SplatPrototype splat in sourceTerrain.terrainData.splatPrototypes)
{
if (splat.texture == null)
{
continue;
}
// If splay use alpha material it should not be added to target
if (sourceData.source.alphaMaterial != null && splat.texture.ToString() == sourceData.source.alphaMaterial.ToString())
{
continue;
}
int index = FindMaterialIndex(targetSplatList, splat.texture);
if (index == -1)
{
targetSplatList.Add(splat);
}
}
}
terrainData.splatPrototypes = targetSplatList.ToArray();
// TODO: release ??
combiner.MaterialCache.RenderTextures.Clear();
int size = terrainData.alphamapResolution;
int targetLayerCount = terrainData.alphamapLayers;
for (int i = 0; i < targetLayerCount; i++)
{
RenderTexture renderTexture = TCGraphicsHelper.CreateRenderTarget(size);
combiner.MaterialCache.RenderTextures.Add(renderTexture);
}
combiner.MaterialCache.Texture = TCGraphicsHelper.CreateTexture(size);
combiner.MaterialCache.ResultData = new float[size, size, terrainData.alphamapLayers];
}
public static void StartCombine(TerrainCombiner terrainCombiner, float groundLevelFraction)
{
Terrain targetTerrain = terrainCombiner.GetComponent <Terrain>();
// TerrainData targetTerrainData = targetTerrain.terrainData;
RenderTexture prevRenderTarget = RenderTexture.active;
Graphics.SetRenderTarget(terrainCombiner.HeightmapCache.RenderTarget);
GL.Clear(false, true, new Color(groundLevelFraction, 0, 0, 1));
{
for (int i = 0; i < terrainCombiner.Instances.Length; i++)
{
TerrainCombinerInstance terrainInstance = terrainCombiner.Instances[i];
if (terrainInstance.source == null)
{
continue;
}
Terrain sourceTerrain = terrainInstance.source.GetComponent <Terrain>();
if (sourceTerrain == null)
{
continue;
}
// TerrainData sourceTerrainData = sourceTerrain.terrainData;
// Texture2D sourceTexture = heightmapDataCache.sourceTextures[i];
Texture2D sourceTexture = terrainInstance.source.CachedHeightmapTexture;
Vector2 position = terrainInstance.position;
// Material material = new Material(Shader.Find("Unlit/Texture"));
Material material = new Material(Shader.Find("PockerHammer/TCHeightmapShader"));
material.SetFloat("_HeighOffset", -terrainInstance.source.GroundLevelFraction);
float heightScale = terrainInstance.WorldSize.y / terrainCombiner.WorldSize.y;
material.SetFloat("_HeightScale", heightScale);
Vector2 scale = TerrainCombiner.CalcChildTerrainPlaneScale(targetTerrain.terrainData.size, sourceTerrain.terrainData.size, terrainInstance.size);
TCGraphicsHelper.DrawTexture(sourceTexture, material, position, terrainInstance.rotation, scale);
}
}
Graphics.SetRenderTarget(prevRenderTarget);
}
private TerrainCombinerInstance FindClosestInstance(Vector3 worldPos)
{
TerrainCombinerInstance closestInstance = null;
float closestDist = float.MaxValue;
foreach (var instance in terrainCombiner.Instances)
{
Vector3 localPos = instance.transform.InverseTransformPoint(worldPos);
Vector3 size = instance.WorldSize;
Rect rect = new Rect(-size.x * 0.5f, -size.z * 0.5f, size.x, size.x);
if (rect.Contains(new Vector2(localPos.x, localPos.z)))
{
float dist = Vector2.Distance(new Vector2(worldPos.x, worldPos.z), new Vector2(instance.transform.position.x, instance.transform.position.z));
if (dist < closestDist)
{
closestDist = dist;
closestInstance = instance;
}
}
}
return(closestInstance);
}
public static void StartCombine(TerrainCombiner terrainCombiner)
{
Terrain targetTerrain = terrainCombiner.GetComponent <Terrain>();
TerrainData targetTerrainData = targetTerrain.terrainData;
RenderTexture prevRenderTarget = RenderTexture.active;
Texture2D blackTexture = CreateTexture(Color.black); // TODO: cache?
// Iterate through alphamaps
for (int nLayer = 0; nLayer < targetTerrainData.alphamapLayers; nLayer++)
{
Graphics.SetRenderTarget(terrainCombiner.MaterialCache.RenderTextures[nLayer]);
GL.Clear(false, true, Color.black);
SplatPrototype targetSplat = targetTerrainData.splatPrototypes[nLayer];
// Apply all sources
for (int i = 0; i < terrainCombiner.Instances.Length; i++)
{
TerrainCombinerInstance sourceData = terrainCombiner.Instances[i];
if (sourceData.source == null)
{
continue;
}
Terrain sourceTerrain = sourceData.source.GetComponent <Terrain>();
TerrainData sourceTerrainData = sourceTerrain.terrainData;
// // TODO: map splat prototypes to find correct id
// int nTexture = nLayer/4;
// int nColor = nLayer % 4;
//
// Texture2D[] textures = sourceTerrainData.alphamapTextures;
//
// if(textures != null && textures.Length > nTexture) {
//
// Vector2 position = sourceData.position;
// Texture2D sourceTexture = textures[nTexture];
//
// Material material = new Material(Shader.Find("PockerHammer/TCMaterialShader"));
// Matrix4x4 m = Matrix4x4.zero;
//
// switch(nColor) {
// case 0:
// m.m00 = 1.0f;
// break;
// case 1:
// m.m11 = 1.0f;
// break;
// case 2:
// m.m22 = 1.0f;
// break;
// case 3:
// m.m33 = 1.0f;
// break;
// }
//
// material.SetMatrix ("_ColorMapping", m);
//
// TCGraphicsHelper.DrawTexture(sourceTexture, material, position, sourceData.rotation, sourceData.scale);
//
// }
// if(nSourceLayer < sourceData.source.CachedMaterialTextures.Count) {
int nSourceLayer = FindMaterialIndex(sourceTerrainData, targetSplat.texture);
Texture2D sourceTexture = nSourceLayer != -1 ?sourceData.source.CachedMaterialTextures[nSourceLayer] : blackTexture;
Texture2D alphaTexture = blackTexture;
if (sourceData.source.alphaMaterial != null)
{
int nSourceAlphaLayer = FindMaterialIndex(sourceTerrainData, sourceData.source.alphaMaterial);
alphaTexture = sourceData.source.CachedMaterialTextures[nSourceAlphaLayer];
}
Material material = new Material(Shader.Find("PockerHammer/TCMaterialShader"));
material.SetTexture("_Texture2", alphaTexture);
Vector2 scale = TerrainCombiner.CalcChildTerrainPlaneScale(targetTerrain.terrainData.size, sourceTerrain.terrainData.size, sourceData.size);
TCGraphicsHelper.DrawTexture(sourceTexture, material, sourceData.position, sourceData.rotation, scale);
}
}
Graphics.SetRenderTarget(prevRenderTarget);
}
