private void CreateFramebuffers()
{
if (_downsampler != null)
{
_downsampler.ForEach(a => a.Reset());
}
if (_upsample != null)
{
_upsample.ForEach(a => a.Reset());
}
_downsampler = new List <Framebuffer>();
_upsample = new List <Framebuffer>();
Vector2 windowSize = Pipeline.ConnectedWindow.WindowSize;
float minDim = (float)Math.Min(windowSize.X, windowSize.Y);
float maxIter = (Radius - 8.0f) + (float)(Math.Log(minDim) / Math.Log(2));
int maxIterInt = (int)maxIter;
_iterations = Math.Max(Math.Min(MAXBLOOMSTEPS, maxIterInt), 1);
_sampleSize = .5f + maxIter - maxIterInt;
_thresholdCurve = new Vector4(
Threshold - Knee,
Knee * 2,
0.25f / Math.Max(1e-5f, Knee),
Threshold);
float intens = (Intensity * INTENSITY);
_bloomColor = new Color4(Color.R * intens, Color.G * intens, Color.B * intens, 1f);
PixelInformation pixel = new PixelInformation(PixelInternalFormat.R11fG11fB10f, PixelFormat.Rgb, PixelType.Float);
Vector2 texSize = windowSize;
Framebuffer f = new Framebuffer(texSize);
f.Append("0", new ColorAttachment(0, pixel));
f.Append("1", new ColorAttachment(1, pixel));
_downsampler.Add(f);
for (int i = 0; i < _iterations; i++)
{
texSize /= 2;
f = new Framebuffer(texSize);
f.Append("0", new ColorAttachment(0, pixel));
_downsampler.Add(f);
if (i == _iterations - 1)
{
break;
}
f = new Framebuffer(texSize);
f.Append("0", new ColorAttachment(0, pixel));
_upsample.Add(f);
}
}
/// <summary>
/// This creates a finished setup for a framebuffer.
/// </summary>
public static Framebuffer CreateWindowFramebuffer(IFramebufferWindow window, int multisamples = 0, PixelInformation?pixelInformation = null, bool depth = true)
{
Framebuffer framebuffer = new Framebuffer(window);
framebuffer.Append("color", new ColorAttachment(0, pixelInformation.GetValueOrDefault(PixelInformation.RGBA_LDR), multisamples: multisamples));
if (depth)
{
RenderbufferAttachment depthAttach = RenderbufferAttachment.GenerateDepth();
depthAttach.Multisample = multisamples;
framebuffer.AppendRenderbuffer(depthAttach);
}
return(framebuffer);
}