private void Update(EvaluationContext context)
{
var resourceManager = ResourceManager.Instance();
var device = resourceManager.Device;
var deviceContext = device.ImmediateContext;
var gsStage = deviceContext.GeometryShader;
ConstantBuffers.GetValues(ref _constantBuffers, context);
ShaderResources.GetValues(ref _shaderResourceViews, context);
SamplerStates.GetValue(context);
_prevConstantBuffers = gsStage.GetConstantBuffers(0, _constantBuffers.Length);
_prevShaderResourceViews = gsStage.GetShaderResources(0, _shaderResourceViews.Length);
_prevGeometryShader = gsStage.Get();
var vs = GeometryShader.GetValue(context);
if (vs == null)
{
return;
}
gsStage.Set(vs);
gsStage.SetConstantBuffers(0, _constantBuffers.Length, _constantBuffers);
gsStage.SetShaderResources(0, _shaderResourceViews.Length, _shaderResourceViews);
}
private void Update(EvaluationContext context)
{
var updateLive = UpdateLive.GetValue(context);
if (_updatedOnce && !updateLive)
{
FilteredCubeMap.Value = _prefilteredCubeMap;
return;
}
var exposure = Exposure.GetValue(context);
//ConstantBuffers.GetValues(ref _constantBuffers, context);
ShaderResources.GetValues(ref _shaderResourceViews, context);
SamplerStates.GetValues(ref _samplerStates, context);
var vs = VertexShader.GetValue(context);
var gs = GeometryShader.GetValue(context);
if (CubeMap.IsConnected && CubeMap.DirtyFlag.IsDirty)
{
//Log.Debug("Dirty");
}
var cubeMapSrc = CubeMap.GetValue(context); // Needs to be checked for null!
if (cubeMapSrc == null)
{
FilteredCubeMap.Value = null;
return;
}
var device = ResourceManager.Instance().Device;
var deviceContext = device.ImmediateContext;
// Vertex shader stage
var vsStage = deviceContext.VertexShader;
_prevVsConstantBuffers = vsStage.GetConstantBuffers(0, 1);
_prevVsShaderResourceViews = vsStage.GetShaderResources(0, _shaderResourceViews.Length);
_prevVertexShader = vsStage.Get();
if (vs == null)
{
Log.Warning($"{nameof(_SpecularPrefilter)} requires valid vertex shader", SymbolChildId);
return;
}
vsStage.Set(vs);
vsStage.SetShaderResources(0, _shaderResourceViews.Length, _shaderResourceViews);
// Geometry shader stage
var gsStage = deviceContext.GeometryShader;
_prevGsConstantBuffers = gsStage.GetConstantBuffers(0, 1);
_prevGsShaderResourceViews = gsStage.GetShaderResources(0, _shaderResourceViews.Length);
_prevGeometryShader = gsStage.Get();
if (gs == null)
{
Log.Warning($"{nameof(_SpecularPrefilter)} requires valid geometry shader", SymbolChildId);
return;
}
gsStage.Set(gs);
gsStage.SetShaderResources(0, _shaderResourceViews.Length, _shaderResourceViews);
// Pixel shader stage
var psStage = deviceContext.PixelShader;
_prevPixelShader = psStage.Get();
_prevPsConstantBuffers = psStage.GetConstantBuffers(0, 1);
_prevPsShaderResourceViews = psStage.GetShaderResources(0, _shaderResourceViews.Length);
_prevPsSamplerStates = psStage.GetSamplers(0, _samplerStates.Length);
var ps = PixelShader.GetValue(context);
if (ps == null)
{
Log.Warning($"{nameof(_SpecularPrefilter)} requires valid pixel shader", SymbolChildId);
return;
}
psStage.Set(ps);
psStage.SetShaderResources(0, _shaderResourceViews.Length, _shaderResourceViews);
psStage.SetSamplers(0, _samplerStates);
// if (_prefilteredCubeMap != null && !Changed)
// {
// context.Image = _prefilteredCubeMap;
// return context;
// }
Vector2 cubeMapSize = new Vector2(cubeMapSrc.Description.Width, cubeMapSrc.Description.Height);
// Log.Debug($"source size: {cubeMapSrc.Description.Width} num mips in src: {cubeMapSrc.Description.MipLevels}");
// if ( _prefilteredCubeMap == null )
// {
var cubeMapDesc = new Texture2DDescription
{
BindFlags = BindFlags.ShaderResource | BindFlags.RenderTarget,
Format = cubeMapSrc.Description.Format,
Width = (int)cubeMapSize.X,
Height = (int)cubeMapSize.Y,
MipLevels = cubeMapSrc.Description.MipLevels,
SampleDescription = cubeMapSrc.Description.SampleDescription,
Usage = ResourceUsage.Default,
OptionFlags = ResourceOptionFlags.TextureCube | ResourceOptionFlags.GenerateMipMaps,
CpuAccessFlags = CpuAccessFlags.None,
ArraySize = 6
};
Utilities.Dispose(ref _prefilteredCubeMap);
try
{
_prefilteredCubeMap = new Texture2D(device, cubeMapDesc);
}
catch (SharpDXException e)
{
Log.Debug($"can't create CubeMap target {e.Message}");
return;
}
var rastDesc = new RasterizerStateDescription
{
FillMode = FillMode.Solid,
CullMode = CullMode.None,
IsDepthClipEnabled = false
};
_rasterizerState = new RasterizerState(device, rastDesc);
// Input Assembler
var previousTopology = device.ImmediateContext.InputAssembler.PrimitiveTopology;
device.ImmediateContext.InputAssembler.PrimitiveTopology = SharpDX.Direct3D.PrimitiveTopology.TriangleList;
_prevBlendState = device.ImmediateContext.OutputMerger.GetBlendState(out _prevBlendFactor, out _prevSampleMask);
device.ImmediateContext.OutputMerger.BlendState = DefaultRenderingStates.DisabledBlendState;
device.ImmediateContext.OutputMerger.DepthStencilState = DefaultRenderingStates.DisabledDepthStencilState;
_prevRenderTargetViews = device.ImmediateContext.OutputMerger.GetRenderTargets(1);
device.ImmediateContext.OutputMerger.GetRenderTargets(out _prevDepthStencilView);
var rtvDesc = new RenderTargetViewDescription()
{
Dimension = RenderTargetViewDimension.Texture2DArray,
Format = cubeMapSrc.Description.Format,
Texture2DArray = new RenderTargetViewDescription.Texture2DArrayResource()
{
ArraySize = 6,
FirstArraySlice = 0,
MipSlice = 0
}
};
int size = _prefilteredCubeMap.Description.Width;
_prevViewports = device.ImmediateContext.Rasterizer.GetViewports <RawViewportF>();
device.ImmediateContext.Rasterizer.State = _rasterizerState;
int numMipLevels = _prefilteredCubeMap.Description.MipLevels;
int mipSlice = 0;
while (mipSlice < numMipLevels)
{
// Log.Debug($"Update mipmap level {mipSlice} size: {size}");
var viewport = new RawViewportF {
X = 0, Y = 0, Width = size, Height = size, MinDepth = 0, MaxDepth = 1
};
device.ImmediateContext.Rasterizer.SetViewports(new[] { viewport });
Utilities.Dispose(ref _cubeMapRtv);
rtvDesc.Texture2DArray.MipSlice = mipSlice;
_cubeMapRtv = new RenderTargetView(device, _prefilteredCubeMap, rtvDesc);
device.ImmediateContext.OutputMerger.SetTargets(_cubeMapRtv, null);
var roughness = (float)mipSlice / (_prefilteredCubeMap.Description.MipLevels - 1);
// Is this required?
if (_settingsBuffer != null)
{
Utilities.Dispose(ref _settingsBuffer);
}
for (int i = 0; i < _samplingParameters.Length; ++i)
{
int indexToUse = -1;
if (Math.Abs(roughness - _samplingParameters[i].roughness) < 0.001f)
{
indexToUse = i;
}
if (indexToUse == -1 && roughness < _samplingParameters[i].roughness)
{
indexToUse = i - 1;
}
if (indexToUse != -1)
{
var parameterData = _samplingParameters[indexToUse];
parameterData.roughness = roughness;
parameterData.exposure = exposure;
ResourceManager.Instance().SetupConstBuffer(parameterData, ref _settingsBuffer);
break;
}
}
var constantBuffers = new[] { _settingsBuffer };
psStage.SetConstantBuffers(0, 1, constantBuffers);
vsStage.SetConstantBuffers(0, 1, constantBuffers);
gsStage.SetConstantBuffers(0, 1, constantBuffers);
device.ImmediateContext.Draw(3, 0);
size /= 2;
++mipSlice;
}
FilteredCubeMap.Value = _prefilteredCubeMap;
Utilities.Dispose(ref _cubeMapRtv);
//device.ImmediateContext.InputAssembler.PrimitiveTopology = previousTopology;
Restore(context);
_updatedOnce = true;
}
