private void Bloom()
{
BloomYPass.Use();
BloomXPass.Use();
BlitFramebuffers(CombinerFramebuffer, BloomYPass, BlitMode.Color);
// here Y has deferred data, X is empty
BloomShader.Use();
SetUniformsShared();
BloomShader.SetUniform("Pass", 0);
BloomYPass.UseTexture(11);
BloomXPass.Use();
PostProcessingMesh.Draw();
// here Y has deferred data, X has 1 pass result
BloomYPass.Use();
// here Y is empty, x has 1 pass
BloomShader.SetUniform("Pass", 1);
BloomXPass.UseTexture(11);
PostProcessingMesh.Draw();
// here y has 2 pass data
}
public List <Voxel> Voxelize(Object3dManager objinfo, int gridSize)
{
List <Voxel> voxels = new List <Voxel>();
List <byte> bytes = new List <byte>();
var dv3 = new Vector3(gridSize, gridSize, gridSize);
for (int x = 0; x < gridSize; x++)
{
for (int y = 0; y < gridSize; y++)
{
for (int z = 0; z < gridSize; z++)
{
var voxel = new Voxel();
voxel.Minimum = (Vector3.Divide(new Vector3(x, y, z), (float)gridSize) - new Vector3(0.5f)) * 2.0f;
voxel.Maximum = (Vector3.Divide(new Vector3(x + 1, y + 1, z + 1), (float)gridSize) - new Vector3(0.5f)) * 2.0f;
voxels.Add(voxel);
bytes.AddRange(BitConverter.GetBytes((uint)0));
bytes.AddRange(BitConverter.GetBytes((int)0));
bytes.AddRange(BitConverter.GetBytes((int)0));
bytes.AddRange(BitConverter.GetBytes((int)0));
}
}
}
BoxesSSBO.MapData(bytes.ToArray());
// yay
Vector3 transFromCenter = objinfo.GetAverageTranslationFromZero();
objinfo.OriginToCenter();
float divisor = objinfo.GetNormalizeDivisor();
var v3aabb = objinfo.GetAxisAlignedBox();
//objinfo.Normalize();
objinfo.AxisDivide(v3aabb);
DrawingFramebuffer.Use();
GL.Disable(EnableCap.DepthTest);
GL.Disable(EnableCap.CullFace);
GL.ColorMask(true, false, false, false);
VoxelizerShader.Use();
//VoxelizerShader.SetUniform("NormalizationDivisor", 1.0f / divisor);
// VoxelizerShader.SetUniform("CenterToZero", transFromCenter);
BoxesSSBO.Use(9);
var ob3d = new Object3dInfo(objinfo.Vertices);
VoxelizerShader.SetUniform("Grid", gridSize);
VoxelizerShader.SetUniform("Pass", 0);
ob3d.Draw();/*
* VoxelizerShader.SetUniform("Pass", 1);
* ob3d.Draw();
* VoxelizerShader.SetUniform("Pass", 2);
* ob3d.Draw();*/
GL.MemoryBarrier(MemoryBarrierFlags.ShaderStorageBarrierBit);
var resultBytes = BoxesSSBO.Read(0, bytes.Count);
int cursor = 0;
int i = 0;
var newVoxels = new List <Voxel>();
for (int x = 0; x < gridSize; x++)
{
for (int y = 0; y < gridSize; y++)
{
for (int z = 0; z < gridSize; z++)
{
uint hit = BitConverter.ToUInt32(resultBytes, cursor);
int nrx = BitConverter.ToInt32(resultBytes, cursor + 4);
int nry = BitConverter.ToInt32(resultBytes, cursor + 8);
int nrz = BitConverter.ToInt32(resultBytes, cursor + 12);
cursor += 4 * 4;
if (hit > 0)
{
float fnrx = (float)nrx / (float)hit;
float fnry = (float)nry / (float)hit;
float fnrz = (float)nrz / (float)hit;
if (hit > 65536)
{
hit = 65536;
}
float dens = (float)hit / (float)65536;
voxels[i].Maximum *= v3aabb;
voxels[i].Minimum *= v3aabb;
voxels[i].Maximum += transFromCenter;
voxels[i].Minimum += transFromCenter;
voxels[i].Density = dens;
voxels[i].Normal = new Vector3(fnrx / 128.0f, fnry / 128.0f, fnrz / 128.0f);
newVoxels.Add(voxels[i]);
}
i++;
}
}
}
GL.Enable(EnableCap.DepthTest);
GL.Enable(EnableCap.CullFace);
GL.ColorMask(true, true, true, true);
return(newVoxels);
}