private void InitBRDFxResources()
{
AssetsManagerInstance AM = AssetsManagerInstance.GetManager();
AssetsMeta.ShaderAsset meta = AM.LoadAsset <AssetsMeta.ShaderAsset>("IBL_PR_SphereToCubeMapPS");
meta = AM.LoadAsset <AssetsMeta.ShaderAsset>("IBL_PR_IntegrateBRDFxPS");
ShaderBytecode shaderBytecode = new ShaderBytecode(meta.Bytecode);
IntegrateBRDFxPS = ToDispose(new PixelShader(m_Device, shaderBytecode));
IntegrateBRDFxPS.DebugName = "IntegrateBRDFxPS";
meta = AM.LoadAsset <AssetsMeta.ShaderAsset>("IBL_PR_IntegrateQuadVS");
shaderBytecode = new ShaderBytecode(meta.Bytecode);
IntegrateQuadVS = ToDispose(new VertexShader(m_Device, shaderBytecode));
IntegrateQuadVS.DebugName = "IntegrateQuadVS";
if (CustomInputLayout == null)
{
CustomInputLayout = ToDispose(new InputLayout(m_Device,
ShaderSignature.GetInputSignature(shaderBytecode), new InputElement[] {
new InputElement("SV_VertexID", 0, Format.R32G32B32_Float, 0, 0),
}));
}
if (ConstantsBuffer == null)
{
// Create the per environment map buffer ViewProjection matrices
ConstantsBuffer = ToDispose(new Buffer(
m_Device,
Utilities.SizeOf <Matrix>() * 2,
ResourceUsage.Default,
BindFlags.ConstantBuffer,
CpuAccessFlags.None,
ResourceOptionFlags.None, 0)
);
ConstantsBuffer.DebugName = "ConstantsBuffer";
}
IntegrateBRDFxMap = ToDispose(new Texture2D(m_Device, new Texture2DDescription()
{
Width = BRDFxMapSize,
Height = BRDFxMapSize,
Format = Format.R16G16_Float, //R8G8B8A8_UNorm for debug
ArraySize = 1,
MipLevels = 1,
SampleDescription = new SampleDescription(1, 0),
BindFlags = BindFlags.RenderTarget,
Usage = ResourceUsage.Default,
OptionFlags = ResourceOptionFlags.None,
CpuAccessFlags = CpuAccessFlags.None,
}));
IntegrateBRDFxRTV = ToDispose(new RenderTargetView(m_Device, IntegrateBRDFxMap, new RenderTargetViewDescription()
{
Dimension = RenderTargetViewDimension.Texture2D,
Format = IntegrateBRDFxMap.Description.Format,
Texture2D = new RenderTargetViewDescription.Texture2DResource()
{
MipSlice = 0,
}
}));
}
void SetupShadersAndBuffers()
{
AssetsManagerInstance AM = AssetsManagerInstance.GetManager();
AssetsMeta.ShaderAsset meta = AM.LoadAsset <AssetsMeta.ShaderAsset>("IBL_PR_SphereToCubeMapPS");
ShaderBytecode shaderBytecode = new ShaderBytecode(meta.Bytecode);
SphereToCubeMapPS = ToDispose(new PixelShader(m_Device, shaderBytecode));
SphereToCubeMapPS.DebugName = "SphereToCubeMapPS";
meta = AM.LoadAsset <AssetsMeta.ShaderAsset>("IBL_PR_IrradiancePS");
shaderBytecode = new ShaderBytecode(meta.Bytecode);
IrradiancePS = ToDispose(new PixelShader(m_Device, shaderBytecode));
IrradiancePS.DebugName = "IrradiancePS";
meta = AM.LoadAsset <AssetsMeta.ShaderAsset>("IBL_PR_PreFilteredPS");
shaderBytecode = new ShaderBytecode(meta.Bytecode);
PreFilteredPS = ToDispose(new PixelShader(m_Device, shaderBytecode));
PreFilteredPS.DebugName = "PreFilteredPS";
meta = AM.LoadAsset <AssetsMeta.ShaderAsset>("IBL_PR_SphereToCubeMapVS");
shaderBytecode = new ShaderBytecode(meta.Bytecode);
SphereToCubeMapVS = ToDispose(new VertexShader(m_Device, shaderBytecode));
SphereToCubeMapVS.DebugName = "SphereToCubeMapVS";
CustomInputLayout = ToDispose(new InputLayout(m_Device,
ShaderSignature.GetInputSignature(shaderBytecode), new InputElement[] {
new InputElement("SV_VertexID", 0, Format.R32G32B32_Float, 0, 0),
}));
// Create the per environment map buffer ViewProjection matrices
ConstantsBuffer = ToDispose(new Buffer(
m_Device,
Utilities.SizeOf <Matrix>() * 2,
ResourceUsage.Default,
BindFlags.ConstantBuffer,
CpuAccessFlags.None,
ResourceOptionFlags.None, 0)
);
ConstantsBuffer.DebugName = "ConstantsBuffer";
BRDFParamsBuffer = ToDispose(new Buffer(
m_Device,
Utilities.SizeOf <BRDFParamsBufferStruct>(),
ResourceUsage.Default,
BindFlags.ConstantBuffer,
CpuAccessFlags.None,
ResourceOptionFlags.None, 0)
);
BRDFParamsBuffer.DebugName = "BRDFParamsBuffer";
Sampler = ToDispose(new SamplerState(m_Device, new SamplerStateDescription()
{
Filter = Filter.MinMagMipLinear, // Trilinear
AddressU = TextureAddressMode.Wrap,
AddressV = TextureAddressMode.Wrap,
AddressW = TextureAddressMode.Wrap,
ComparisonFunction = Comparison.Never,
MipLodBias = 0,
MinimumLod = 0,
MaximumLod = float.MaxValue
}));
Sampler.DebugName = "DefaultTrilinearSampler";
}