private bool ComputeNewVoxels(ComputeShader shader, ThreadedChunkLoader thread, Chunk chunk, Vector3 min, int octreeSize)
{
float gpuStart = Time.realtimeSinceStartup;
float[] chunkPos = new float[3] {
min.x, min.y, min.z
};
shader.SetFloats("chunkPosition", chunkPos);
shader.SetInt("resolution", octreeSize);
shader.SetInt("octreeSize", octreeSize);
int[] zero = new int[1] {
0
};
float sqRTRC = Mathf.Sqrt(octreeSize * octreeSize * octreeSize);
int sqRTRes = (int)sqRTRC;
if (sqRTRC > sqRTRes)
{
sqRTRes++;
}
int[] zeroSq = new int[sqRTRes];
for (int i = 0; i < sqRTRes; i++)
{
zeroSq[i] = 0;
}
ComputeBuffer Perm = new ComputeBuffer(512, sizeof(int));
Perm.SetData(permutations);
ComputeBuffer cornCount = new ComputeBuffer(sqRTRes, sizeof(int));
ComputeBuffer finalCount = new ComputeBuffer(1, sizeof(int));
ComputeBuffer voxMatBuffer = new ComputeBuffer(octreeSize * octreeSize * octreeSize, sizeof(uint));
ComputeBuffer cornerMaterials = new ComputeBuffer((octreeSize + 1) * (octreeSize + 1) * (octreeSize + 1), sizeof(uint));
shader.SetInt("primitiveModCount", chunk.modCount);
ComputeBuffer PrimMods = null;
if (chunk.modCount > 0)
{
PrimMods = new ComputeBuffer(chunk.modCount, (sizeof(int) * 2) + (sizeof(float) * 6));
PrimMods.SetData(chunk.primitiveMods);
}
int kernel = shader.FindKernel("ComputeMaterials");
if (chunk.modCount > 0)
{
shader.SetBuffer(kernel, "primitiveMods", PrimMods);
}
shader.SetBuffer(kernel, "Perm", Perm);
shader.SetBuffer(kernel, "cornerMaterials", cornerMaterials);
shader.Dispatch(kernel, 1, 1, 1);
kernel = shader.FindKernel("ComputeCorners");
shader.SetBuffer(kernel, "voxelMaterials", voxMatBuffer);
shader.SetBuffer(kernel, "cornerCount", cornCount);
shader.SetBuffer(kernel, "cornerMaterials", cornerMaterials);
cornCount.SetData(zeroSq);
shader.Dispatch(kernel, 1, 1, 1);
kernel = shader.FindKernel("AddLength");
shader.SetBuffer(kernel, "cornerCount", cornCount);
shader.SetBuffer(kernel, "finalCount", finalCount);
finalCount.SetData(zero);
shader.Dispatch(kernel, 1, 1, 1);
int[] voxelCount = new int[1];
finalCount.GetData(voxelCount);
int count = voxelCount[0];
if (count <= 0)
{
voxMatBuffer.Dispose();
cornerMaterials.Dispose();
cornCount.Dispose();
finalCount.Dispose();
Perm.Dispose();
if (chunk.modCount > 0)
{
PrimMods.Dispose();
PrimMods = null;
}
Perm = null;
voxMatBuffer = null;
cornerMaterials = null;
cornCount = null;
finalCount = null;
return(false);
}
//Debug.Log (count);
ComputeBuffer cornerIndexes = new ComputeBuffer(count, sizeof(uint));
kernel = shader.FindKernel("ComputePositions");
shader.SetBuffer(kernel, "voxelMaterials", voxMatBuffer);
shader.SetBuffer(kernel, "cornerCount", cornCount);
shader.SetBuffer(kernel, "cornerIndexes", cornerIndexes);
shader.Dispatch(kernel, 1, 1, 1);
ComputeBuffer voxBuffer = new ComputeBuffer(count, (sizeof(float) * 6) + sizeof(int));
ComputeBuffer positionBuffer = new ComputeBuffer(count, sizeof(float) * 3);
kernel = shader.FindKernel("ComputeVoxels");
if (chunk.modCount > 0)
{
shader.SetBuffer(kernel, "primitiveMods", PrimMods);
}
shader.SetBuffer(kernel, "Perm", Perm);
shader.SetBuffer(kernel, "voxMins", positionBuffer);
shader.SetBuffer(kernel, "voxelMaterials", voxMatBuffer);
shader.SetBuffer(kernel, "finalCount", finalCount);
shader.SetBuffer(kernel, "cornerIndexes", cornerIndexes);
shader.SetBuffer(kernel, "voxels", voxBuffer);
shader.Dispatch(kernel, (count / 128) + 1, 1, 1);
Vector3[] voxelMins = new Vector3[count];
positionBuffer.GetData(voxelMins);
positionBuffer.Dispose();
positionBuffer = null;
uint[] voxelMaterials = new uint[count];
cornerIndexes.GetData(voxelMaterials);
cornerIndexes.Dispose();
cornerIndexes = null;
GPUVOX[] voxs = new GPUVOX[count];
voxBuffer.GetData(voxs);
voxBuffer.Dispose();
voxBuffer = null;
voxMatBuffer.Dispose();
cornerMaterials.Dispose();
cornCount.Dispose();
finalCount.Dispose();
Perm.Dispose();
if (chunk.modCount > 0)
{
PrimMods.Dispose();
PrimMods = null;
}
Perm = null;
voxMatBuffer = null;
cornerMaterials = null;
cornCount = null;
finalCount = null;
float gpuEnd = Time.realtimeSinceStartup;
//Debug.Log ("GPU time on chunk: " + (gpuEnd - gpuStart));
thread.setData(this, count, voxelMins, voxelMaterials, voxs, min, octreeSize);
thread.setChunkForUpdate(chunk);
thread.Start();
return(true);
}
private List <OctreeNode> ComputeVoxels(ComputeShader shader, Vector3 min, int octreeSize)
{
float gpuStart = Time.realtimeSinceStartup;
float[] chunkPos = new float[3] {
min.x, min.y, min.z
};
shader.SetFloats("chunkPosition", chunkPos);
shader.SetInt("resolution", octreeSize);
shader.SetInt("octreeSize", octreeSize);
float sqRTRC = Mathf.Sqrt(octreeSize * octreeSize * octreeSize);
int sqRTRes = (int)sqRTRC;
if (sqRTRC > sqRTRes)
{
sqRTRes++;
}
ComputeBuffer Perm = new ComputeBuffer(512, sizeof(int));
Perm.SetData(permutations);
ComputeBuffer cornCount = new ComputeBuffer(sqRTRes, sizeof(int));
ComputeBuffer finalCount = new ComputeBuffer(1, sizeof(float));
ComputeBuffer voxMatBuffer = new ComputeBuffer(octreeSize * octreeSize * octreeSize, sizeof(uint));
float rD8 = octreeSize / 8.0f;
int rD8I = (int)rD8;
if (rD8 > rD8I)
{
rD8I++;
}
int kernel = shader.FindKernel("ComputeCorners");
shader.SetBuffer(kernel, "Perm", Perm);
shader.SetBuffer(kernel, "voxelMaterials", voxMatBuffer);
shader.Dispatch(kernel, rD8I, rD8I, rD8I);
/*kernel = shader.FindKernel("ComputeLength");
* shader.SetBuffer(kernel, "voxelMaterials", voxMatBuffer);
* shader.SetBuffer(kernel, "cornerCount", cornCount);
* shader.Dispatch(kernel, 1, 1, 1);*/
kernel = shader.FindKernel("AddLength");
shader.SetBuffer(kernel, "cornerCount", cornCount);
shader.SetBuffer(kernel, "finalCount", finalCount);
shader.Dispatch(kernel, 1, 1, 1);
float[] voxelCount = new float[1];
finalCount.GetData(voxelCount);
finalCount.SetData(voxelCount);
int count = (int)voxelCount[0];
//Debug.Log (count);
if (count <= 0)
{
voxMatBuffer.Dispose();
cornCount.Dispose();
finalCount.Dispose();
Perm.Dispose();
return(null);
}
ComputeBuffer cornerIndexes = new ComputeBuffer(count, sizeof(uint));
kernel = shader.FindKernel("ComputePositions");
shader.SetBuffer(kernel, "voxelMaterials", voxMatBuffer);
shader.SetBuffer(kernel, "cornerCount", cornCount);
shader.SetBuffer(kernel, "cornerIndexes", cornerIndexes);
shader.Dispatch(kernel, 1, 1, 1);
ComputeBuffer voxBuffer = new ComputeBuffer(count, (sizeof(float) * 6) + sizeof(int));
ComputeBuffer positionBuffer = new ComputeBuffer(count, sizeof(float) * 3);
kernel = shader.FindKernel("ComputeVoxels");
shader.SetBuffer(kernel, "Perm", Perm);
shader.SetBuffer(kernel, "voxMins", positionBuffer);
shader.SetBuffer(kernel, "voxelMaterials", voxMatBuffer);
shader.SetBuffer(kernel, "finalCount", finalCount);
shader.SetBuffer(kernel, "cornerIndexes", cornerIndexes);
shader.SetBuffer(kernel, "voxels", voxBuffer);
//int dispatchCount = count / 10;
shader.Dispatch(kernel, (count / 128) + 1, 1, 1);
List <OctreeNode> computedVoxels = new List <OctreeNode>();
Vector3[] voxelMins = new Vector3[count];
positionBuffer.GetData(voxelMins);
positionBuffer.Dispose();
uint[] voxelMaterials = new uint[count];
cornerIndexes.GetData(voxelMaterials);
cornerIndexes.Dispose();
GPUVOX[] voxs = new GPUVOX[count];
voxBuffer.GetData(voxs);
voxBuffer.Dispose();
voxMatBuffer.Dispose();
cornCount.Dispose();
finalCount.Dispose();
Perm.Dispose();
float gpuEnd = Time.realtimeSinceStartup;
//Debug.Log ("GPU time on chunk: " + (gpuEnd - gpuStart));
int HIGHEST_VOXEL_RES = 64;
int voxelSize = HIGHEST_VOXEL_RES / octreeSize;
for (int i = 0; i < count; i++)
{
if (voxs[i].numPoints != 0)
{
OctreeNode leaf = new OctreeNode();
leaf.type = OctreeNodeType.Node_Leaf;
leaf.size = voxelSize;
OctreeDrawInfo drawInfo = new OctreeDrawInfo();
drawInfo.position = voxs[i].vertPoint;
drawInfo.averageNormal = voxs[i].avgNormal;
drawInfo.corners = (int)voxelMaterials[i];
leaf.drawInfo = drawInfo;
leaf.min = voxelMins[i];
computedVoxels.Add(leaf);
}
}
//Debug.Log ("CPU Leaf generation time on chunk: " + (Time.realtimeSinceStartup - gpuEnd));
//Debug.Log (computedVoxels.Count);
return(computedVoxels);
}
