mirror of
https://github.com/ncblakely/GiantsTools
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161 lines
5.4 KiB
C++
161 lines
5.4 KiB
C++
//--------------------------------------------------------------------------------------
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// File: BufferHelpers.h
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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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#pragma once
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#if defined(_XBOX_ONE) && defined(_TITLE)
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#include <d3d11_x.h>
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#include "GraphicsMemory.h"
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#else
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#include <d3d11_1.h>
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#endif
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#include <assert.h>
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#include <wrl\client.h>
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namespace DirectX
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{
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// Helpers for creating initialized Direct3D buffer resources.
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HRESULT __cdecl CreateStaticBuffer(_In_ ID3D11Device* device,
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_In_reads_bytes_(count* stride) const void* ptr,
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size_t count,
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size_t stride,
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unsigned int bindFlags,
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_COM_Outptr_ ID3D11Buffer** pBuffer) noexcept;
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template<typename T>
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HRESULT CreateStaticBuffer(_In_ ID3D11Device* device,
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_In_reads_(count) T const* data,
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size_t count,
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unsigned int bindFlags,
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_COM_Outptr_ ID3D11Buffer** pBuffer) noexcept
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{
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return CreateStaticBuffer(device, data, count, sizeof(T), bindFlags, pBuffer);
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}
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template<typename T>
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HRESULT CreateStaticBuffer(_In_ ID3D11Device* device,
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T const& data,
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unsigned int bindFlags,
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_COM_Outptr_ ID3D11Buffer** pBuffer) noexcept
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{
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return CreateStaticBuffer(device, data.data(), data.size(), sizeof(typename T::value_type), bindFlags, pBuffer);
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}
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// Helpers for creating texture from memory arrays.
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HRESULT __cdecl CreateTextureFromMemory(_In_ ID3D11Device* device,
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size_t width,
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DXGI_FORMAT format,
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const D3D11_SUBRESOURCE_DATA& initData,
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_COM_Outptr_opt_ ID3D11Texture1D** texture,
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_COM_Outptr_opt_ ID3D11ShaderResourceView** textureView,
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unsigned int bindFlags = D3D11_BIND_SHADER_RESOURCE) noexcept;
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HRESULT __cdecl CreateTextureFromMemory(_In_ ID3D11Device* device,
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size_t width, size_t height,
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DXGI_FORMAT format,
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const D3D11_SUBRESOURCE_DATA& initData,
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_COM_Outptr_opt_ ID3D11Texture2D** texture,
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_COM_Outptr_opt_ ID3D11ShaderResourceView** textureView,
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unsigned int bindFlags = D3D11_BIND_SHADER_RESOURCE) noexcept;
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HRESULT __cdecl CreateTextureFromMemory(
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#if defined(_XBOX_ONE) && defined(_TITLE)
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_In_ ID3D11DeviceX* d3dDeviceX,
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_In_ ID3D11DeviceContextX* d3dContextX,
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#else
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_In_ ID3D11Device* device,
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_In_ ID3D11DeviceContext* d3dContext,
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#endif
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size_t width, size_t height,
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DXGI_FORMAT format,
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const D3D11_SUBRESOURCE_DATA& initData,
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_COM_Outptr_opt_ ID3D11Texture2D** texture,
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_COM_Outptr_opt_ ID3D11ShaderResourceView** textureView) noexcept;
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HRESULT __cdecl CreateTextureFromMemory(_In_ ID3D11Device* device,
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size_t width, size_t height, size_t depth,
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DXGI_FORMAT format,
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const D3D11_SUBRESOURCE_DATA& initData,
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_COM_Outptr_opt_ ID3D11Texture3D** texture,
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_COM_Outptr_opt_ ID3D11ShaderResourceView** textureView,
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unsigned int bindFlags = D3D11_BIND_SHADER_RESOURCE) noexcept;
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// Strongly typed wrapper around a Direct3D constant buffer.
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namespace Internal
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{
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// Base class, not to be used directly: clients should access this via the derived PrimitiveBatch<T>.
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class ConstantBufferBase
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{
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protected:
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void __cdecl CreateBuffer(_In_ ID3D11Device* device, size_t bytes, _Outptr_ ID3D11Buffer** pBuffer);
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};
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}
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template<typename T>
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class ConstantBuffer : public Internal::ConstantBufferBase
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{
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public:
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// Constructor.
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ConstantBuffer() = default;
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explicit ConstantBuffer(_In_ ID3D11Device* device) noexcept(false)
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{
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CreateBuffer(device, sizeof(T), mConstantBuffer.GetAddressOf());
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}
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ConstantBuffer(ConstantBuffer&&) = default;
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ConstantBuffer& operator= (ConstantBuffer&&) = default;
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ConstantBuffer(ConstantBuffer const&) = delete;
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ConstantBuffer& operator= (ConstantBuffer const&) = delete;
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void Create(_In_ ID3D11Device* device)
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{
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CreateBuffer(device, sizeof(T), mConstantBuffer.ReleaseAndGetAddressOf());
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}
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// Writes new data into the constant buffer.
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#if defined(_XBOX_ONE) && defined(_TITLE)
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void __cdecl SetData(_In_ ID3D11DeviceContext* deviceContext, T const& value, void** grfxMemory)
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{
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assert(grfxMemory != nullptr);
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void* ptr = GraphicsMemory::Get().Allocate(deviceContext, sizeof(T), 64);
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assert(ptr != nullptr);
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*(T*)ptr = value;
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*grfxMemory = ptr;
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}
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#else
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void __cdecl SetData(_In_ ID3D11DeviceContext* deviceContext, T const& value) noexcept
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{
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assert(mConstantBuffer);
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D3D11_MAPPED_SUBRESOURCE mappedResource;
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if (SUCCEEDED(deviceContext->Map(mConstantBuffer.Get(), 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource)))
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{
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*static_cast<T*>(mappedResource.pData) = value;
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deviceContext->Unmap(mConstantBuffer.Get(), 0);
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}
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}
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#endif // _XBOX_ONE && _TITLE
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// Looks up the underlying D3D constant buffer.
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ID3D11Buffer* GetBuffer() const noexcept { return mConstantBuffer.Get(); }
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private:
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Microsoft::WRL::ComPtr<ID3D11Buffer> mConstantBuffer;
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};
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}
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