/// <summary>
/// Performs luminance measurement, tonemapping, applies bloom.
/// </summary>
/// <param name="target">LDR target.</param>
/// <param name="hdrImage">HDR source image.</param>
public void Render(GameTime gameTime, RenderTargetSurface target, ShaderResource hdrImage)
{
var device = Game.GraphicsDevice;
var filter = Game.GetService <Filter>();
var ds = Game.GetService <DebugStrings>();
//
// Rough downsampling of source HDR-image :
//
filter.StretchRect(averageLum.Surface, hdrImage);
averageLum.BuildMipmaps();
//
// Make bloom :
//
filter.StretchRect(bloom0.Surface, hdrImage);
bloom0.BuildMipmaps();
filter.GaussBlur(bloom0, bloom1, Config.GaussBlurSigma, 0);
filter.GaussBlur(bloom0, bloom1, Config.GaussBlurSigma, 1);
filter.GaussBlur(bloom0, bloom1, Config.GaussBlurSigma, 2);
filter.GaussBlur(bloom0, bloom1, Config.GaussBlurSigma, 3);
//
// Setup parameters :
//
var paramsData = new Params();
paramsData.AdaptationRate = 1 - (float)Math.Pow(0.5f, gameTime.ElapsedSec / Config.AdaptationHalfLife);
paramsData.LuminanceLowBound = Config.LuminanceLowBound;
paramsData.LuminanceHighBound = Config.LuminanceHighBound;
paramsData.KeyValue = Config.KeyValue;
paramsData.BloomAmount = Config.BloomAmount;
paramsCB.SetData(paramsData);
device.PixelShaderConstants[0] = paramsCB;
//
// Measure and adapt :
//
device.SetTargets(null, measuredNew);
device.PixelShaderResources[0] = averageLum;
device.PixelShaderResources[1] = measuredOld;
device.PipelineState = factory[(int)(Flags.MEASURE_ADAPT)];
device.Draw(3, 0);
//
// Tonemap and compose :
//
device.SetTargets(null, target);
device.PixelShaderResources[0] = hdrImage; // averageLum;
device.PixelShaderResources[1] = measuredNew; // averageLum;
device.PixelShaderResources[2] = bloom0; // averageLum;
device.PixelShaderResources[3] = Game.GetService <SpriteBatch>().TextureWhite;
device.PixelShaderSamplers[0] = SamplerState.LinearClamp;
Flags op = Flags.LINEAR;
if (Config.TonemappingOperator == TonemappingOperator.Filmic)
{
op = Flags.FILMIC;
}
if (Config.TonemappingOperator == TonemappingOperator.Linear)
{
op = Flags.LINEAR;
}
if (Config.TonemappingOperator == TonemappingOperator.Reinhard)
{
op = Flags.REINHARD;
}
device.PipelineState = factory[(int)(Flags.TONEMAPPING | op)];
device.Draw(3, 0);
device.ResetStates();
// swap luminanice buffers :
Misc.Swap(ref measuredNew, ref measuredOld);
}
/// <summary>
/// Performs luminance measurement, tonemapping, applies bloom.
/// </summary>
/// <param name="target">LDR target.</param>
/// <param name="hdrImage">HDR source image.</param>
public void Render(GameTime gameTime, RenderTargetSurface target, ShaderResource hdrImage, RenderWorld viewLayer)
{
var device = Game.GraphicsDevice;
var filter = Game.RenderSystem.Filter;
var settings = viewLayer.HdrSettings;
using (new PixEvent("HDR Postprocessing")) {
//
// Rough downsampling of source HDR-image :
//
filter.StretchRect(averageLum.Surface, hdrImage, SamplerState.PointClamp);
averageLum.BuildMipmaps();
//
// Make bloom :
//
filter.StretchRect(viewLayer.Bloom0.Surface, hdrImage, SamplerState.LinearClamp);
viewLayer.Bloom0.BuildMipmaps();
filter.GaussBlur(viewLayer.Bloom0, viewLayer.Bloom1, settings.GaussBlurSigma, 0);
filter.GaussBlur(viewLayer.Bloom0, viewLayer.Bloom1, settings.GaussBlurSigma, 1);
filter.GaussBlur(viewLayer.Bloom0, viewLayer.Bloom1, settings.GaussBlurSigma, 2);
filter.GaussBlur(viewLayer.Bloom0, viewLayer.Bloom1, settings.GaussBlurSigma, 3);
//
// Setup parameters :
//
var paramsData = new Params();
paramsData.AdaptationRate = 1 - (float)Math.Pow(0.5f, gameTime.ElapsedSec / settings.AdaptationHalfLife);
paramsData.LuminanceLowBound = settings.LuminanceLowBound;
paramsData.LuminanceHighBound = settings.LuminanceHighBound;
paramsData.KeyValue = settings.KeyValue;
paramsData.BloomAmount = settings.BloomAmount;
paramsData.DirtMaskLerpFactor = settings.DirtMaskLerpFactor;
paramsData.DirtAmount = settings.DirtAmount;
paramsData.Saturation = settings.Saturation;
paramsData.MaximumOutputValue = settings.MaximumOutputValue;
paramsData.MinimumOutputValue = settings.MinimumOutputValue;
paramsData.DitherAmount = settings.DitherAmount;
paramsCB.SetData(paramsData);
device.PixelShaderConstants[0] = paramsCB;
//
// Measure and adapt :
//
device.SetTargets(null, viewLayer.MeasuredNew);
device.PixelShaderResources[0] = averageLum;
device.PixelShaderResources[1] = viewLayer.MeasuredOld;
device.PipelineState = factory[(int)(Flags.MEASURE_ADAPT)];
device.Draw(3, 0);
//
// Tonemap and compose :
//
device.SetTargets(null, target);
device.PixelShaderResources[0] = hdrImage; // averageLum;
device.PixelShaderResources[1] = viewLayer.MeasuredNew; // averageLum;
device.PixelShaderResources[2] = viewLayer.Bloom0; // averageLum;
device.PixelShaderResources[3] = settings.DirtMask1 == null ? whiteTex.Srv : settings.DirtMask1.Srv;
device.PixelShaderResources[4] = settings.DirtMask2 == null ? whiteTex.Srv : settings.DirtMask2.Srv;
device.PixelShaderResources[5] = noiseTex.Srv;
device.PixelShaderSamplers[0] = SamplerState.LinearClamp;
Flags op = Flags.LINEAR;
if (settings.TonemappingOperator == TonemappingOperator.Filmic)
{
op = Flags.FILMIC;
}
if (settings.TonemappingOperator == TonemappingOperator.Linear)
{
op = Flags.LINEAR;
}
if (settings.TonemappingOperator == TonemappingOperator.Reinhard)
{
op = Flags.REINHARD;
}
device.PipelineState = factory[(int)(Flags.TONEMAPPING | op)];
device.Draw(3, 0);
device.ResetStates();
// swap luminanice buffers :
Misc.Swap(ref viewLayer.MeasuredNew, ref viewLayer.MeasuredOld);
}
}