mirror of
https://github.com/ncblakely/GiantsTools
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347 lines
9.9 KiB
C++
347 lines
9.9 KiB
C++
//--------------------------------------------------------------------------------------
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// File: DualPostProcess.cpp
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// Licensed under the MIT License.
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//
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// http://go.microsoft.com/fwlink/?LinkId=248929
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//--------------------------------------------------------------------------------------
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#include "pch.h"
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#include "PostProcess.h"
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#include "AlignedNew.h"
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#include "CommonStates.h"
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#include "BufferHelpers.h"
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#include "DemandCreate.h"
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#include "DirectXHelpers.h"
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#include "SharedResourcePool.h"
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using namespace DirectX;
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using Microsoft::WRL::ComPtr;
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namespace
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{
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constexpr int c_MaxSamples = 16;
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constexpr int Dirty_ConstantBuffer = 0x01;
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constexpr int Dirty_Parameters = 0x02;
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// Constant buffer layout. Must match the shader!
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__declspec(align(16)) struct PostProcessConstants
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{
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XMVECTOR sampleOffsets[c_MaxSamples];
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XMVECTOR sampleWeights[c_MaxSamples];
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};
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static_assert((sizeof(PostProcessConstants) % 16) == 0, "CB size not padded correctly");
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}
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// Include the precompiled shader code.
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namespace
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{
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#if defined(_XBOX_ONE) && defined(_TITLE)
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#include "Shaders/Compiled/XboxOnePostProcess_VSQuad.inc"
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#include "Shaders/Compiled/XboxOnePostProcess_PSMerge.inc"
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#include "Shaders/Compiled/XboxOnePostProcess_PSBloomCombine.inc"
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#else
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#include "Shaders/Compiled/PostProcess_VSQuad.inc"
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#include "Shaders/Compiled/PostProcess_PSMerge.inc"
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#include "Shaders/Compiled/PostProcess_PSBloomCombine.inc"
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#endif
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}
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namespace
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{
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struct ShaderBytecode
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{
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void const* code;
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size_t length;
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};
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const ShaderBytecode pixelShaders[] =
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{
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{ PostProcess_PSMerge, sizeof(PostProcess_PSMerge) },
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{ PostProcess_PSBloomCombine, sizeof(PostProcess_PSBloomCombine) },
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};
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static_assert(_countof(pixelShaders) == DualPostProcess::Effect_Max, "array/max mismatch");
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// Factory for lazily instantiating shaders.
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class DeviceResources
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{
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public:
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DeviceResources(_In_ ID3D11Device* device)
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: stateObjects(device),
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mDevice(device),
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mVertexShader{},
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mPixelShaders{},
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mMutex{}
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{ }
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// Gets or lazily creates the vertex shader.
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ID3D11VertexShader* GetVertexShader()
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{
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return DemandCreate(mVertexShader, mMutex, [&](ID3D11VertexShader** pResult) -> HRESULT
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{
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HRESULT hr = mDevice->CreateVertexShader(PostProcess_VSQuad, sizeof(PostProcess_VSQuad), nullptr, pResult);
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if (SUCCEEDED(hr))
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SetDebugObjectName(*pResult, "DualPostProcess");
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return hr;
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});
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}
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// Gets or lazily creates the specified pixel shader.
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ID3D11PixelShader* GetPixelShader(unsigned int shaderIndex)
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{
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assert(shaderIndex < DualPostProcess::Effect_Max);
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_Analysis_assume_(shaderIndex < DualPostProcess::Effect_Max);
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return DemandCreate(mPixelShaders[shaderIndex], mMutex, [&](ID3D11PixelShader** pResult) -> HRESULT
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{
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HRESULT hr = mDevice->CreatePixelShader(pixelShaders[shaderIndex].code, pixelShaders[shaderIndex].length, nullptr, pResult);
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if (SUCCEEDED(hr))
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SetDebugObjectName(*pResult, "DualPostProcess");
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return hr;
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});
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}
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CommonStates stateObjects;
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protected:
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ComPtr<ID3D11Device> mDevice;
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ComPtr<ID3D11VertexShader> mVertexShader;
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ComPtr<ID3D11PixelShader> mPixelShaders[DualPostProcess::Effect_Max];
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std::mutex mMutex;
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};
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}
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class DualPostProcess::Impl : public AlignedNew<PostProcessConstants>
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{
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public:
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Impl(_In_ ID3D11Device* device);
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void Process(_In_ ID3D11DeviceContext* deviceContext, std::function<void __cdecl()>& setCustomState);
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void SetDirtyFlag() noexcept { mDirtyFlags = INT_MAX; }
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// Fields.
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PostProcessConstants constants;
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DualPostProcess::Effect fx;
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ComPtr<ID3D11ShaderResourceView> texture;
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ComPtr<ID3D11ShaderResourceView> texture2;
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float mergeWeight1;
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float mergeWeight2;
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float bloomIntensity;
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float bloomBaseIntensity;
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float bloomSaturation;
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float bloomBaseSaturation;
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private:
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int mDirtyFlags;
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ConstantBuffer<PostProcessConstants> mConstantBuffer;
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// Per-device resources.
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std::shared_ptr<DeviceResources> mDeviceResources;
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static SharedResourcePool<ID3D11Device*, DeviceResources> deviceResourcesPool;
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};
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// Global pool of per-device DualPostProcess resources.
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SharedResourcePool<ID3D11Device*, DeviceResources> DualPostProcess::Impl::deviceResourcesPool;
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// Constructor.
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DualPostProcess::Impl::Impl(_In_ ID3D11Device* device)
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: constants{},
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fx(DualPostProcess::Merge),
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mergeWeight1(0.5f),
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mergeWeight2(0.5f),
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bloomIntensity(1.25f),
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bloomBaseIntensity(1.f),
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bloomSaturation(1.f),
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bloomBaseSaturation(1.f),
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mDirtyFlags(INT_MAX),
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mConstantBuffer(device),
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mDeviceResources(deviceResourcesPool.DemandCreate(device))
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{
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if (device->GetFeatureLevel() < D3D_FEATURE_LEVEL_10_0)
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{
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throw std::exception("DualPostProcess requires Feature Level 10.0 or later");
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}
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SetDebugObjectName(mConstantBuffer.GetBuffer(), "DualPostProcess");
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}
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// Sets our state onto the D3D device.
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void DualPostProcess::Impl::Process(
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_In_ ID3D11DeviceContext* deviceContext,
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std::function<void __cdecl()>& setCustomState)
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{
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// Set the texture.
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ID3D11ShaderResourceView* textures[2] = { texture.Get(), texture2.Get() };
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deviceContext->PSSetShaderResources(0, 2, textures);
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auto sampler = mDeviceResources->stateObjects.LinearClamp();
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deviceContext->PSSetSamplers(0, 1, &sampler);
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// Set state objects.
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deviceContext->OMSetBlendState(mDeviceResources->stateObjects.Opaque(), nullptr, 0xffffffff);
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deviceContext->OMSetDepthStencilState(mDeviceResources->stateObjects.DepthNone(), 0);
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deviceContext->RSSetState(mDeviceResources->stateObjects.CullNone());
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// Set shaders.
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auto vertexShader = mDeviceResources->GetVertexShader();
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auto pixelShader = mDeviceResources->GetPixelShader(fx);
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deviceContext->VSSetShader(vertexShader, nullptr, 0);
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deviceContext->PSSetShader(pixelShader, nullptr, 0);
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// Set constants.
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if (mDirtyFlags & Dirty_Parameters)
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{
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mDirtyFlags &= ~Dirty_Parameters;
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mDirtyFlags |= Dirty_ConstantBuffer;
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switch (fx)
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{
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case Merge:
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constants.sampleWeights[0] = XMVectorReplicate(mergeWeight1);
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constants.sampleWeights[1] = XMVectorReplicate(mergeWeight2);
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break;
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case BloomCombine:
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constants.sampleWeights[0] = XMVectorSet(bloomBaseSaturation, bloomSaturation, 0.f, 0.f);
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constants.sampleWeights[1] = XMVectorReplicate(bloomBaseIntensity);
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constants.sampleWeights[2] = XMVectorReplicate(bloomIntensity);
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break;
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default:
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break;
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}
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}
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#if defined(_XBOX_ONE) && defined(_TITLE)
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void *grfxMemory;
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mConstantBuffer.SetData(deviceContext, constants, &grfxMemory);
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Microsoft::WRL::ComPtr<ID3D11DeviceContextX> deviceContextX;
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ThrowIfFailed(deviceContext->QueryInterface(IID_GRAPHICS_PPV_ARGS(deviceContextX.GetAddressOf())));
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auto buffer = mConstantBuffer.GetBuffer();
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deviceContextX->PSSetPlacementConstantBuffer(0, buffer, grfxMemory);
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#else
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if (mDirtyFlags & Dirty_ConstantBuffer)
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{
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mDirtyFlags &= ~Dirty_ConstantBuffer;
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mConstantBuffer.SetData(deviceContext, constants);
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}
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// Set the constant buffer.
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auto buffer = mConstantBuffer.GetBuffer();
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deviceContext->PSSetConstantBuffers(0, 1, &buffer);
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#endif
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if (setCustomState)
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{
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setCustomState();
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}
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// Draw quad.
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deviceContext->IASetInputLayout(nullptr);
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deviceContext->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
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deviceContext->Draw(3, 0);
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}
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// Public constructor.
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DualPostProcess::DualPostProcess(_In_ ID3D11Device* device)
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: pImpl(std::make_unique<Impl>(device))
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{
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}
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// Move constructor.
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DualPostProcess::DualPostProcess(DualPostProcess&& moveFrom) noexcept
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: pImpl(std::move(moveFrom.pImpl))
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{
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}
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// Move assignment.
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DualPostProcess& DualPostProcess::operator= (DualPostProcess&& moveFrom) noexcept
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{
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pImpl = std::move(moveFrom.pImpl);
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return *this;
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}
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// Public destructor.
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DualPostProcess::~DualPostProcess()
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{
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}
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// IPostProcess methods.
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void DualPostProcess::Process(
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_In_ ID3D11DeviceContext* deviceContext,
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_In_opt_ std::function<void __cdecl()> setCustomState)
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{
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pImpl->Process(deviceContext, setCustomState);
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}
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// Shader control.
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void DualPostProcess::SetEffect(Effect fx)
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{
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if (fx >= Effect_Max)
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throw std::out_of_range("Effect not defined");
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pImpl->fx = fx;
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pImpl->SetDirtyFlag();
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}
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// Properties
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void DualPostProcess::SetSourceTexture(_In_opt_ ID3D11ShaderResourceView* value)
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{
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pImpl->texture = value;
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}
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void DualPostProcess::SetSourceTexture2(_In_opt_ ID3D11ShaderResourceView* value)
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{
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pImpl->texture2 = value;
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}
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void DualPostProcess::SetMergeParameters(float weight1, float weight2)
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{
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pImpl->mergeWeight1 = weight1;
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pImpl->mergeWeight2 = weight2;
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pImpl->SetDirtyFlag();
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}
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void DualPostProcess::SetBloomCombineParameters(float bloom, float base, float bloomSaturation, float baseSaturation)
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{
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pImpl->bloomIntensity = bloom;
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pImpl->bloomBaseIntensity = base;
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pImpl->bloomSaturation = bloomSaturation;
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pImpl->bloomBaseSaturation = baseSaturation;
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pImpl->SetDirtyFlag();
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}
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