public void OnWindowResize(DXManager dxman)
{
DisposeBuffers();
var device = dxman.device;
int sc = dxman.multisamplecount;
int sq = dxman.multisamplequality;
Multisampled = (sc > 1);
int uw = Width = dxman.backbuffer.Description.Width;
int uh = Height = dxman.backbuffer.Description.Height;
Viewport = new ViewportF();
Viewport.Width = (float)uw;
Viewport.Height = (float)uh;
Viewport.MinDepth = 0.0f;
Viewport.MaxDepth = 1.0f;
Viewport.X = 0.0f;
Viewport.Y = 0.0f;
Format f = Format.R32G32B32A32_Float;
Format df = Format.D32_Float;
Primary = new GpuTexture(device, uw, uh, f, sc, sq, true, df);
WindowSizeVramUsage += Primary.VramUsage;
int rc = (int)(Math.Ceiling(uw / 8.0f) * Math.Ceiling(uh / 8.0f));
Reduction0 = new GpuBuffer <float>(device, 1, rc);
Reduction1 = new GpuBuffer <float>(device, 1, rc);
WindowSizeVramUsage += sizeof(float) * rc * 2;
LumBlendResult = new GpuBuffer <float>(device, 1, 1);
WindowSizeVramUsage += sizeof(float); //because 4 bytes matter
int tw = uw / 8;
int th = uh / 8;
rc = tw * th;
f = Format.R8G8B8A8_UNorm;
Bloom0 = new GpuBuffer <Vector4>(device, 1, rc);
Bloom1 = new GpuBuffer <Vector4>(device, 1, rc);
WindowSizeVramUsage += /*sizeof(V4F)*/ 16 * rc * 2;
Bloom = new GpuTexture(device, tw, th, f, 1, 0, false, df);
WindowSizeVramUsage += Bloom.VramUsage;
}
public void DisposeBuffers()
{
if (Bloom != null)
{
Bloom.Dispose();
Bloom = null;
}
if (Bloom0 != null)
{
Bloom0.Dispose();
Bloom0 = null;
}
if (Bloom1 != null)
{
Bloom1.Dispose();
Bloom1 = null;
}
if (LumBlendResult != null)
{
LumBlendResult.Dispose();
LumBlendResult = null;
}
if (Reduction0 != null)
{
Reduction0.Dispose();
Reduction0 = null;
}
if (Reduction1 != null)
{
Reduction1.Dispose();
Reduction1 = null;
}
if (Primary != null)
{
Primary.Dispose();
Primary = null;
}
WindowSizeVramUsage = 0;
}
private void ProcessLuminance(DeviceContext context)
{
var srv = SceneColourSRV;
uint dimx, dimy;
if (CS_FULL_PIXEL_REDUCTION)
{
dimx = (uint)(Math.Ceiling(Width / 8.0f));
dimx = (uint)(Math.Ceiling(dimx / 2.0f));
dimy = (uint)(Math.Ceiling(Height / 8.0f));
dimy = (uint)(Math.Ceiling(dimy / 2.0f));
}
else
{
dimx = (uint)(Math.Ceiling(81.0f / 8.0f)); //ToneMappingTexSize = (int)pow(3.0f, NUM_TONEMAP_TEXTURES-1);
dimy = dimx;
}
ReduceCSVars.Vars.dimx = dimx;
ReduceCSVars.Vars.dimy = dimy;
ReduceCSVars.Vars.Width = (uint)Width;
ReduceCSVars.Vars.Height = (uint)Height;
ReduceCSVars.Update(context);
Compute(context, ReduceTo1DCS, ReduceCSVars.Buffer, Reduction0.UAV, (int)dimx, (int)dimy, 1, srv);
uint dim = dimx * dimy;
uint nNumToReduce = dim;
dim = (uint)(Math.Ceiling(dim / 128.0f));
if (nNumToReduce > 1)
{
for (;;)
{
ReduceCSVars.Vars.dimx = nNumToReduce;
ReduceCSVars.Vars.dimy = dim;
ReduceCSVars.Vars.Width = 0;
ReduceCSVars.Vars.Height = 0;
ReduceCSVars.Update(context);
Compute(context, ReduceTo0DCS, ReduceCSVars.Buffer, Reduction1.UAV, (int)dim, 1, 1, Reduction0.SRV);
nNumToReduce = dim;
dim = (uint)(Math.Ceiling(dim / 128.0f));
if (nNumToReduce == 1)
{
break;
}
var r0 = Reduction0;
Reduction0 = Reduction1;
Reduction1 = r0;
}
}
else
{
var r0 = Reduction0;
Reduction0 = Reduction1;
Reduction1 = r0;
}
LumBlendCSVars.Vars.blend = new Vector4(Math.Min(ElapsedTime * LumBlendSpeed, 1.0f));
LumBlendCSVars.Update(context);
Compute(context, LumBlendCS, LumBlendCSVars.Buffer, LumBlendResult.UAV, 1, 1, 1, Reduction1.SRV);
}