public void Execute(int i)
{
// Calcul splat map
var x = i / WorldChunkConstants.ChunkSize;
var y = i % WorldChunkConstants.ChunkSize;
//Normal map
var x_1 = math.clamp(x - 1, 0, WorldChunkConstants.ChunkSize - 1);
var y_1 = math.clamp(y - 1, 0, WorldChunkConstants.ChunkSize - 1);
var x1 = math.clamp(x + 1, 0, WorldChunkConstants.ChunkSize - 1);
var y1 = math.clamp(y + 1, 0, WorldChunkConstants.ChunkSize - 1);
var xLeft = x_1 + y * WorldChunkConstants.ChunkSize;
var xRight = x1 + y * WorldChunkConstants.ChunkSize;
var yUp = x + y_1 * WorldChunkConstants.ChunkSize;
var yDown = x + y1 * WorldChunkConstants.ChunkSize;
var dxN = ((Heightmap[xLeft] - Heightmap[xRight]) + 1) * 0.5f;
var dyN = ((Heightmap[yUp] - Heightmap[yDown]) + 1) * 0.5f;
// Normalise x/y coordinates to range 0-1
//var xN = math.clamp(x, 0, WorldChunkConstants.ChunkSize - 1);
//var yN = math.clamp(y, 0, WorldChunkConstants.ChunkSize - 1);
//Find height
height = Heightmap[i];
//Find scope
float3 normalVector = new float3(dxN, dyN, 1f);
float3 yVector = new float3(0f, 1f, 0f);
float scope = math.dot(normalVector, yVector);
//THE RULES BELOW TO SET THE WEIGHTS OF EACH TEXTURE
// Texture[0] GROUND (under 20%)
var w0 = 1;// Mathf.Clamp01((terrainData.heightmapHeight - height));
//// Texture[1] GRASS (decreases with scope)
var w1 = 0.5f;// scope;// Mathf.Clamp01((terrainData.heightmapHeight - height));
//// Texture[2] ROCKS (increases with scope)
var w2 = 0f; // 1.0f - scope;// 1.0f - Mathf.Clamp01(steepness * steepness / (terrainData.heightmapHeight / 5.0f));
//// Texture[3] SNOW (above 75%)
var w3 = 0f; //(height > 0.5f) ? 0.5f : 0f;// height * Mathf.Clamp01(normal.z);
// Sum of all textures weights must add to 1, so calculate normalization factor from sum of weights
var w = new float4(w0, w1, w2, w3);
//w = math.normalize(w);// [w1, w2, w3, w4]
// [Anton] Got rid of float4 textures
Splatmap[i] = new byte4((byte)(w.x * 0xFF), (byte)(w.y * 0xFF), (byte)(w.z * 0xFF), (byte)(w.w * 0xFF));
}
public void Execute(int i)
{
// Calcul normal map
var x = i / WorldChunkConstants.ChunkSize;
var y = i % WorldChunkConstants.ChunkSize;
var x_1 = math.clamp(x - 1, 0, WorldChunkConstants.ChunkSize - 1);
var y_1 = math.clamp(y - 1, 0, WorldChunkConstants.ChunkSize - 1);
var x1 = math.clamp(x + 1, 0, WorldChunkConstants.ChunkSize - 1);
var y1 = math.clamp(y + 1, 0, WorldChunkConstants.ChunkSize - 1);
var xLeft = x_1 + y * WorldChunkConstants.ChunkSize;
var xRight = x1 + y * WorldChunkConstants.ChunkSize;
var yUp = x + y_1 * WorldChunkConstants.ChunkSize;
var yDown = x + y1 * WorldChunkConstants.ChunkSize;
var dx = ((Heightmap[xLeft] - Heightmap[xRight]) + 1) * 0.5f;
var dy = ((Heightmap[yUp] - Heightmap[yDown]) + 1) * 0.5f;
var luma = new float4(dx, dy, 1, 1);
// [Anton] Got rid of float4 textures
Normalmap[i] = new byte4((byte)(luma.x * 0xFF), (byte)(luma.y * 0xFF), (byte)(luma.z * 0xFF), (byte)(luma.w * 0xFF));
}