/// <summary>Function called to initialize the effect.</summary>
/// <remarks>Applications must implement this method to ensure that any required resources are created, and configured for the effect.</remarks>
protected override void OnInitialize()
{
// Initialize the default look up table.
using (IGorgonImage image = new GorgonImage(new GorgonImageInfo(ImageType.Image1D, BufferFormat.R8G8B8A8_UNorm)
{
Width = 3
}))
{
image.ImageData.ReadAs <int>(0) = GorgonColor.RedPure.ToABGR();
image.ImageData.ReadAs <int>(4) = GorgonColor.BluePure.ToABGR();
image.ImageData.ReadAs <int>(8) = GorgonColor.GreenPure.ToABGR();
_defaultLut = GorgonTexture1DView.CreateTexture(Graphics, new GorgonTexture1DInfo("Default Spectral LUT")
{
Binding = TextureBinding.ShaderResource,
Usage = ResourceUsage.Immutable,
Width = 3
}, image);
}
_chromeAbShader = GorgonShaderFactory.Compile <GorgonPixelShader>(Graphics, Resources.ChromaticAberration, "ChromaticAberration", GorgonGraphics.IsDebugEnabled);
_simpleChromeAbShader = GorgonShaderFactory.Compile <GorgonPixelShader>(Graphics, Resources.ChromaticAberration, "ChromaticAberrationSimple", GorgonGraphics.IsDebugEnabled);
_settings = GorgonConstantBufferView.CreateConstantBuffer(Graphics, new GorgonConstantBufferInfo("Chromatic Aberration Settings Buffer")
{
SizeInBytes = DX.Vector4.SizeInBytes,
Usage = ResourceUsage.Default
});
}
/// <summary>Releases unmanaged and - optionally - managed resources.</summary>
/// <param name="disposing">
/// <c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected override void Dispose(bool disposing)
{
GorgonTexture1DView texture = Interlocked.Exchange(ref _defaultLut, null);
GorgonPixelShader shader1 = Interlocked.Exchange(ref _chromeAbShader, null);
GorgonPixelShader shader2 = Interlocked.Exchange(ref _simpleChromeAbShader, null);
GorgonConstantBufferView cbv = Interlocked.Exchange(ref _settings, null);
shader1?.Dispose();
shader2?.Dispose();
texture?.Dispose();
cbv?.Dispose();
}
/// <summary>Function called to build a new (or return an existing) 2D batch state.</summary>
/// <param name="passIndex">The index of the current rendering pass.</param>
/// <param name="statesChanged">
/// <b>true</b> if the blend, raster, or depth/stencil state was changed. <b>false</b> if not.</param>
/// <returns>The 2D batch state.</returns>
protected override Gorgon2DBatchState OnGetBatchState(int passIndex, bool statesChanged)
{
if ((_useSimple != FullScreen) ||
((LookupTexture == null) && (_currentLut != _defaultLut)) ||
((LookupTexture != null) && (LookupTexture != _currentLut)))
{
GorgonPixelShader current = FullScreen ? _simpleChromeAbShader : _chromeAbShader;
_currentLut = LookupTexture ?? _defaultLut;
_chromeAbBatchState = BatchStateBuilder.Clear()
.BlendState(GorgonBlendState.NoBlending)
.PixelShaderState(_shaderStateBuilder
.Clear()
.Shader(current)
.ShaderResource(!FullScreen ? _currentLut : null, 1)
.SamplerState(!FullScreen ? GorgonSamplerState.Default : null, 1)
.ConstantBuffer(_settings, 1))
.Build();
_useSimple = FullScreen;
}
return(_chromeAbBatchState);
}
