public void ComputeGrassFor(IEnvironmentSurface chunk)
{
MeshData meshData = chunk.MeshData;
int numTris = meshData.vertices.Length / 3;
vertexBuffer.SetData(meshData.vertices);
int numThreadPerAxis = Mathf.Max(1, Mathf.CeilToInt(numTris / THREAD_SIZE_GROUP));
grassProperties = new ComputeBuffer(GRASS_PER_COMPUTE, MeshInstancedProperties.Size(), ComputeBufferType.Append);
grassProperties.SetCounterValue(0);
Material mat = new Material(this.mat);
Maybe <Bounds> mBounds = chunk.MeshBounds;
Vector3 offset = mBounds.Value.center;
grassShader.SetInt(NAME_OF_TRIANGLE_LENGTH, numTris);
grassShader.SetVector(NAME_OF_OFFSET, offset);
grassShader.SetFloat(NAME_OF_BOUNDS, grassMesh.bounds.extents.y);
grassShader.SetBuffer(0, NAME_OF_TRIANGLE_BUFFER, vertexBuffer);
grassShader.SetBuffer(0, NAME_OF_GRASS_BUFFER, grassProperties);
grassShader.Dispatch(0, numThreadPerAxis, 1, 1);
new InstantiatableData(grassMesh, grassProperties, mat, mBounds);
grassProperties = null;
}
public void ComputeGrassFor(Bounds bounds, int numTris, ComputeBuffer triangleData)
{
int numThreadPerAxis = Mathf.Max(1, Mathf.CeilToInt(numTris / 32f));
grassProperties = new ComputeBuffer(GRASS_PER_COMPUTE, MeshInstancedProperties.Size(), ComputeBufferType.Append);
grassProperties.SetCounterValue(0);
Material mat = new Material(this.mat);
Vector3 offset = bounds.center;
grassShader.SetInt(NAME_OF_TRIANGLE_LENGTH, numTris);
grassShader.SetVector(NAME_OF_OFFSET, offset);
grassShader.SetFloat(NAME_OF_BOUNDS, grassMesh.bounds.extents.y);
grassShader.SetBuffer(0, NAME_OF_TRIANGLE_BUFFER, triangleData);
grassShader.SetBuffer(0, NAME_OF_GRASS_BUFFER, grassProperties);
grassShader.Dispatch(0, numThreadPerAxis, 1, 1);
new InstanciableData(grassMesh, numTris, grassProperties, mat, bounds);
grassProperties = null;
}