protected override void DrawCore(RenderContext context)
{
var input = GetInput(0);
var output = GetOutput(0);
if (input == null || output == null)
{
return;
}
// Gets the current camera state
var camera = context.GetCameraFromSlot(Camera);
if (camera != null)
{
// Update the parameters for this post effect
CameraComponentRenderer.UpdateParameters(context, camera);
}
if (!Enabled)
{
if (input != output)
{
Scaler.SetInput(input);
Scaler.SetOutput(output);
Scaler.Draw(context);
}
return;
}
// If input == output, than copy the input to a temporary texture
if (input == output)
{
var newInput = NewScopedRenderTarget2D(input.Width, input.Height, input.Format);
GraphicsDevice.Copy(input, newInput);
input = newInput;
}
var currentInput = input;
if (depthOfField.Enabled && !depthOfField.Faulted && InputCount > 1 && GetInput(1) != null && GetInput(1).IsDepthStencil)
{
// DoF
var dofOutput = NewScopedRenderTarget2D(input.Width, input.Height, input.Format);
var inputDepthTexture = GetInput(1); // Depth
depthOfField.SetColorDepthInput(input, inputDepthTexture);
depthOfField.SetOutput(dofOutput);
depthOfField.Draw(context);
currentInput = dofOutput;
}
// Luminance pass (only if tone mapping is enabled)
// TODO: This is not super pluggable to have this kind of dependencies. Check how to improve this
var toneMap = colorTransformsGroup.Transforms.Get <ToneMap>();
if (colorTransformsGroup.Enabled && !colorTransformsGroup.Faulted && toneMap != null && toneMap.Enabled)
{
const int LocalLuminanceDownScale = 3;
// The luminance chain uses power-of-two intermediate targets, so it expects to output to one as well
var lumWidth = Math.Min(MathUtil.NextPowerOfTwo(currentInput.Size.Width), MathUtil.NextPowerOfTwo(currentInput.Size.Height));
lumWidth = Math.Max(1, lumWidth / 2);
var lumSize = new Size3(lumWidth, lumWidth, 1).Down2(LocalLuminanceDownScale);
var luminanceTexture = NewScopedRenderTarget2D(lumSize.Width, lumSize.Height, PixelFormat.R16_Float, 1);
luminanceEffect.SetInput(currentInput);
luminanceEffect.SetOutput(luminanceTexture);
luminanceEffect.Draw(context);
// Set this parameter that will be used by the tone mapping
colorTransformsGroup.Parameters.Set(LuminanceEffect.LuminanceResult, new LuminanceResult(luminanceEffect.AverageLuminance, luminanceTexture));
}
// Bright filter pass
Texture brightTexture = null;
if ((bloom.Enabled && !bloom.Faulted) || (lightStreak.Enabled && !lightStreak.Faulted) || (lensFlare.Enabled && !lensFlare.Faulted))
{
brightTexture = NewScopedRenderTarget2D(currentInput.Width, currentInput.Height, currentInput.Format, 1);
brightFilter.SetInput(currentInput);
brightFilter.SetOutput(brightTexture);
brightFilter.Draw(context);
}
// Bloom pass
if (bloom.Enabled && !bloom.Faulted)
{
bloom.SetInput(brightTexture);
bloom.SetOutput(currentInput);
bloom.Draw(context);
}
// Light streak pass
if (lightStreak.Enabled && !lightStreak.Faulted)
{
lightStreak.SetInput(brightTexture);
lightStreak.SetOutput(currentInput);
lightStreak.Draw(context);
}
// Lens flare pass
if (lensFlare.Enabled && !lensFlare.Faulted)
{
lensFlare.SetInput(brightTexture);
lensFlare.SetOutput(currentInput);
lensFlare.Draw(context);
}
var outputForLastEffectBeforeAntiAliasing = output;
if (ssaa != null && ssaa.Enabled && !ssaa.Faulted)
{
outputForLastEffectBeforeAntiAliasing = NewScopedRenderTarget2D(output.Width, output.Height, output.Format);
}
// When FXAA is enabled we need to detect whether the ColorTransformGroup should output the Luminance into the alpha or not
var fxaa = ssaa as FXAAEffect;
var luminanceToChannelTransform = colorTransformsGroup.PostTransforms.Get <LuminanceToChannelTransform>();
if (fxaa != null)
{
if (luminanceToChannelTransform == null)
{
luminanceToChannelTransform = new LuminanceToChannelTransform {
ColorChannel = ColorChannel.A
};
colorTransformsGroup.PostTransforms.Add(luminanceToChannelTransform);
}
// Only enabled when FXAA is enabled and InputLuminanceInAlpha is true
luminanceToChannelTransform.Enabled = fxaa.Enabled && fxaa.InputLuminanceInAlpha;
}
else if (luminanceToChannelTransform != null)
{
luminanceToChannelTransform.Enabled = false;
}
// Color transform group pass (tonemap, color grading)
var lastEffect = colorTransformsGroup.Enabled && !colorTransformsGroup.Faulted ? (ImageEffect)colorTransformsGroup: Scaler;
lastEffect.SetInput(currentInput);
lastEffect.SetOutput(outputForLastEffectBeforeAntiAliasing);
lastEffect.Draw(context);
if (ssaa != null && ssaa.Enabled && !ssaa.Faulted)
{
ssaa.SetInput(outputForLastEffectBeforeAntiAliasing);
ssaa.SetOutput(output);
ssaa.Draw(context);
}
}
public bool RequiresSsrGBuffers => false; // localReflections.Enabled; TODO : to merge with RLR branch.
protected override void DrawCore(RenderDrawContext context)
{
var input = GetInput(0);
var output = GetOutput(0);
if (input == null || output == null)
{
return;
}
var inputDepthTexture = GetInput(1); // Depth
// Update the parameters for this post effect
if (!Enabled)
{
if (input != output)
{
Scaler.SetInput(input);
Scaler.SetOutput(output);
Scaler.Draw(context);
}
return;
}
// If input == output, than copy the input to a temporary texture
if (input == output)
{
var newInput = NewScopedRenderTarget2D(input.Width, input.Height, input.Format);
context.CommandList.Copy(input, newInput);
input = newInput;
}
var currentInput = input;
var fxaa = Antialiasing as FXAAEffect;
bool aaFirst = Bloom != null && Bloom.StableConvolution;
bool needAA = fxaa != null && fxaa.Enabled;
// do AA here, first. (hybrid method from Karis2013)
if (aaFirst && needAA)
{
using (context.QueryManager.BeginProfile(Color.Green, ImageEffectProfilingKeys.HybridFxaa))
{
// explanation:
// The Karis method (Unreal Engine 4.1x), uses a hybrid pipeline to execute AA.
// The AA is usually done at the end of the pipeline, but we don't benefit from
// AA for the posteffects, which is a shame.
// The Karis method, executes AA at the beginning, but for AA to be correct, it must work post tonemapping,
// and even more in fact, in gamma space too. Plus, it waits for the alpha=luma to be a "perceptive luma" so also gamma space.
// in our case, working in gamma space created monstruous outlining artefacts around eggageratedely strong constrasted objects (way in hdr range).
// so AA works in linear space, but still with gamma luma, as a light tradeoff to supress artefacts.
// create a 16 bits target for FXAA:
var aaSurface = NewScopedRenderTarget2D(input.Width, input.Height, input.Format);
// render range compression & perceptual luma to alpha channel:
rangeCompress.SetInput(currentInput);
rangeCompress.SetOutput(aaSurface);
rangeCompress.Draw(context);
// do AA:
fxaa.InputLuminanceInAlpha = true;
Antialiasing.SetInput(aaSurface);
Antialiasing.SetOutput(currentInput);
Antialiasing.Draw(context);
// reverse tone LDR to HDR:
rangeDecompress.SetInput(currentInput);
rangeDecompress.SetOutput(aaSurface);
rangeDecompress.Draw(context);
currentInput = aaSurface;
}
}
if (AmbientOcclusion.Enabled && inputDepthTexture != null)
{
using (context.QueryManager.BeginProfile(Color.Green, ImageEffectProfilingKeys.AmbientOcclusion))
{
// Ambient Occlusion
var aoOutput = NewScopedRenderTarget2D(input.Width, input.Height, input.Format);
AmbientOcclusion.SetColorDepthInput(currentInput, inputDepthTexture);
AmbientOcclusion.SetOutput(aoOutput);
AmbientOcclusion.Draw(context);
currentInput = aoOutput;
}
}
if (DepthOfField.Enabled && inputDepthTexture != null)
{
using (context.QueryManager.BeginProfile(Color.Green, ImageEffectProfilingKeys.DepthOfField))
{
// DoF
var dofOutput = NewScopedRenderTarget2D(input.Width, input.Height, input.Format);
DepthOfField.SetColorDepthInput(currentInput, inputDepthTexture);
DepthOfField.SetOutput(dofOutput);
DepthOfField.Draw(context);
currentInput = dofOutput;
}
}
// Luminance pass (only if tone mapping is enabled)
// TODO: This is not super pluggable to have this kind of dependencies. Check how to improve this
var toneMap = colorTransformsGroup.Transforms.Get <ToneMap>();
if (colorTransformsGroup.Enabled && toneMap != null && toneMap.Enabled)
{
using (context.QueryManager.BeginProfile(Color.Green, ImageEffectProfilingKeys.AverageLumiance))
{
Texture luminanceTexture = null;
if (toneMap.UseLocalLuminance)
{
const int localLuminanceDownScale = 3;
// The luminance chain uses power-of-two intermediate targets, so it expects to output to one as well
var lumWidth = Math.Min(MathUtil.NextPowerOfTwo(currentInput.Size.Width), MathUtil.NextPowerOfTwo(currentInput.Size.Height));
lumWidth = Math.Max(1, lumWidth / 2);
var lumSize = new Size3(lumWidth, lumWidth, 1).Down2(localLuminanceDownScale);
luminanceTexture = NewScopedRenderTarget2D(lumSize.Width, lumSize.Height, PixelFormat.R16_Float, 1);
luminanceEffect.SetOutput(luminanceTexture);
}
luminanceEffect.EnableLocalLuminanceCalculation = toneMap.UseLocalLuminance;
luminanceEffect.SetInput(currentInput);
luminanceEffect.Draw(context);
// Set this parameter that will be used by the tone mapping
colorTransformsGroup.Parameters.Set(LuminanceEffect.LuminanceResult, new LuminanceResult(luminanceEffect.AverageLuminance, luminanceTexture));
}
}
if (BrightFilter.Enabled && (Bloom.Enabled || LightStreak.Enabled || LensFlare.Enabled))
{
Texture brightTexture = NewScopedRenderTarget2D(currentInput.Width, currentInput.Height, currentInput.Format, 1);
using (context.QueryManager.BeginProfile(Color.Green, ImageEffectProfilingKeys.BrightFilter))
{
// Bright filter pass
BrightFilter.SetInput(currentInput);
BrightFilter.SetOutput(brightTexture);
BrightFilter.Draw(context);
}
// Bloom pass
if (Bloom.Enabled)
{
using (context.QueryManager.BeginProfile(Color.Green, ImageEffectProfilingKeys.Bloom))
{
Bloom.SetInput(brightTexture);
Bloom.SetOutput(currentInput);
Bloom.Draw(context);
}
}
// Light streak pass
if (LightStreak.Enabled)
{
using (context.QueryManager.BeginProfile(Color.Green, ImageEffectProfilingKeys.LightStreak))
{
LightStreak.SetInput(brightTexture);
LightStreak.SetOutput(currentInput);
LightStreak.Draw(context);
}
}
// Lens flare pass
if (LensFlare.Enabled)
{
using (context.QueryManager.BeginProfile(Color.Green, ImageEffectProfilingKeys.LensFlare))
{
LensFlare.SetInput(brightTexture);
LensFlare.SetOutput(currentInput);
LensFlare.Draw(context);
}
}
}
bool aaLast = needAA && !aaFirst;
var toneOutput = aaLast ? NewScopedRenderTarget2D(input.Width, input.Height, input.Format) : output;
// When FXAA is enabled we need to detect whether the ColorTransformGroup should output the Luminance into the alpha or not
var luminanceToChannelTransform = colorTransformsGroup.PostTransforms.Get <LuminanceToChannelTransform>();
if (fxaa != null)
{
if (luminanceToChannelTransform == null)
{
luminanceToChannelTransform = new LuminanceToChannelTransform {
ColorChannel = ColorChannel.A
};
colorTransformsGroup.PostTransforms.Add(luminanceToChannelTransform);
}
// Only enabled when FXAA is enabled and InputLuminanceInAlpha is true
luminanceToChannelTransform.Enabled = fxaa.Enabled && fxaa.InputLuminanceInAlpha;
}
else if (luminanceToChannelTransform != null)
{
luminanceToChannelTransform.Enabled = false;
}
using (context.QueryManager.BeginProfile(Color.Green, ImageEffectProfilingKeys.ColorTransformGroup))
{
// Color transform group pass (tonemap, color grading)
var lastEffect = colorTransformsGroup.Enabled ? (ImageEffect)colorTransformsGroup : Scaler;
lastEffect.SetInput(currentInput);
lastEffect.SetOutput(toneOutput);
lastEffect.Draw(context);
}
// do AA here, last, if not already done.
if (aaLast)
{
using (context.QueryManager.BeginProfile(Color.Green, ImageEffectProfilingKeys.Fxaa))
{
Antialiasing.SetInput(toneOutput);
Antialiasing.SetOutput(output);
Antialiasing.Draw(context);
}
}
}