directx12_Direct3D_directx12

//*************************************************************************************** // BoxApp.cpp by Frank Luna (C) 2015 All Rights Reserved. // // Shows how to draw a box in Direct3D 12. // // Controls: // Hold the left mouse button down and move the mouse to rotate. // Hold the right mouse button down and move the mouse to zoom in and out. //*************************************************************************************** #include "../../Common/d3dApp.h" #include "../../Common/MathHelper.h" #include "../../Common/UploadBuffer.h" using Microsoft::WRL::ComPtr; using namespace DirectX; using namespace DirectX::PackedVector; struct Vertex { XMFLOAT3 Pos; XMFLOAT4 Color; }; struct ObjectConstants { XMFLOAT4X4 WorldViewProj = MathHelper::Identity4x4(); }; class BoxApp : public D3DApp { public: BoxApp(HINSTANCE hInstance); BoxApp(const BoxApp& rhs) = delete; BoxApp& operator=(const BoxApp& rhs) = delete; ~BoxApp(); virtual bool Initialize()override; private: virtual void OnResize()override; virtual void Update(const GameTimer& gt)override; virtual void Draw(const GameTimer& gt)override; virtual void OnMouseDown(WPARAM btnState, int x, int y)override; virtual void OnMouseUp(WPARAM btnState, int x, int y)override; virtual void OnMouseMove(WPARAM btnState, int x, int y)override; void BuildDescriptorHeaps(); void BuildConstantBuffers(); void BuildRootSignature(); void BuildShadersAndInputLayout(); void BuildBoxGeometry(); void BuildPSO(); private: ComPtr<ID3D12RootSignature> mRootSignature = nullptr; ComPtr<ID3D12DescriptorHeap> mCbvHeap = nullptr; std::unique_ptr<UploadBuffer<ObjectConstants>> mObjectCB = nullptr; std::unique_ptr<MeshGeometry> mBoxGeo = nullptr; ComPtr<ID3DBlob> mvsByteCode = nullptr; ComPtr<ID3DBlob> mpsByteCode = nullptr; std::vector<D3D12_INPUT_ELEMENT_DESC> mInputLayout; ComPtr<ID3D12PipelineState> mPSO = nullptr; XMFLOAT4X4 mWorld = MathHelper::Identity4x4(); XMFLOAT4X4 mView = MathHelper::Identity4x4(); XMFLOAT4X4 mProj = MathHelper::Identity4x4(); float mTheta = 1.5f*XM_PI; float mPhi = XM_PIDIV4; float mRadius = 5.0f; POINT mLastMousePos; }; int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE prevInstance, PSTR cmdLine, int showCmd) { // Enable run-time memory check for debug builds. #if defined(DEBUG) | defined(_DEBUG) _CrtSetDbgFlag( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF ); #endif try { BoxApp theApp(hInstance); if(!theApp.Initialize()) return 0; return theApp.Run(); } catch(DxException& e) { MessageBox(nullptr, e.ToString().c_str(), L"HR Failed", MB_OK); return 0; } } BoxApp::BoxApp(HINSTANCE hInstance) : D3DApp(hInstance) { } BoxApp::~BoxApp() { } bool BoxApp::Initialize() { if(!D3DApp::Initialize()) return false; // Reset the command list to prep for initialization commands. ThrowIfFailed(mCommandList->Reset(mDirectCmdListAlloc.Get(), nullptr)); BuildDescriptorHeaps(); BuildConstantBuffers(); BuildRootSignature(); BuildShadersAndInputLayout(); BuildBoxGeometry(); BuildPSO(); // Execute the initialization commands. ThrowIfFailed(mCommandList->Close()); ID3D12CommandList* cmdsLists[] = { mCommandList.Get() }; mCommandQueue->ExecuteCommandLists(_countof(cmdsLists), cmdsLists); // Wait until initialization is complete. FlushCommandQueue(); return true; } void BoxApp::OnResize() { D3DApp::OnResize(); // The window resized, so update the aspect ratio and recompute the projection matrix. XMMATRIX P = XMMatrixPerspectiveFovLH(0.25f*MathHelper::Pi, AspectRatio(), 1.0f, 1000.0f); XMStoreFloat4x4(&mProj, P); } void BoxApp::Update(const GameTimer& gt) { // Convert Spherical to Cartesian coordinates. float x = mRadius*sinf(mPhi)*cosf(mTheta); float z = mRadius*sinf(mPhi)*sinf(mTheta); float y = mRadius*cosf(mPhi); // Build the view matrix. XMVECTOR pos = XMVectorSet(x, y, z, 1.0f); XMVECTOR target = XMVectorZero(); XMVECTOR up = XMVectorSet(0.0f, 1.0f, 0.0f, 0.0f); XMMATRIX view = XMMatrixLookAtLH(pos, target, up); XMStoreFloat4x4(&mView, view); XMMATRIX world = XMLoadFloat4x4(&mWorld); XMMATRIX proj = XMLoadFloat4x4(&mProj); XMMATRIX worldViewProj = world*view*proj; // Update the constant buffer with the latest worldViewProj matrix. ObjectConstants objConstants; XMStoreFloat4x4(&objConstants.WorldViewProj, XMMatrixTranspose(worldViewProj)); mObjectCB->CopyData(0, objConstants); } void BoxApp::Draw(const GameTimer& gt) { // Reuse the memory associated with command recording. // We can only reset when the associated command lists have finished execution on the GPU. ThrowIfFailed(mDirectCmdListAlloc->Reset()); // A command list can be reset after it has been added to the command queue via ExecuteCommandList. // Reusing the command list reuses memory. ThrowIfFailed(mCommandList->Reset(mDirectCmdListAlloc.Get(), mPSO.Get())); mCommandList->RSSetViewports(1, &mScreenViewport); mCommandList->RSSetScissorRects(1, &mScissorRect); // Indicate a state transition on the resource usage. mCommandList->ResourceBarrier(1, &CD3DX12_RESOURCE_BARRIER::Transition(CurrentBackBuffer(), D3D12_RESOURCE_STATE_PRESENT, D3D12_RESOURCE_STATE_RENDER_TARGET)); // Clear the back buffer and depth buffer. mCommandList->ClearRenderTargetView(CurrentBackBufferView(), Colors::LightSteelBlue, 0, nullptr); mCommandList->ClearDepthStencilView(DepthStencilView(), D3D12_CLEAR_FLAG_DEPTH | D3D12_CLEAR_FLAG_STENCIL, 1.0f, 0, 0, nullptr); // Specify the buffers we are going to render to. mCommandList->OMSetRenderTargets(1, &CurrentBackBufferView(), true, &DepthStencilView()); ID3D12DescriptorHeap* descriptorHeaps[] = { mCbvHeap.Get() }; mCommandList->SetDescriptorHeaps(_countof(descriptorHeaps), descriptorHeaps); mCommandList->SetGraphicsRootSignature(mRootSignature.Get()); mCommandList->IASetVertexBuffers(0, 1, &mBoxGeo->VertexBufferView()); mCommandList->IASetIndexBuffer(&mBoxGeo->IndexBufferView()); mCommandList->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST); mCommandList->SetGraphicsRootDescriptorTable(0, mCbvHeap->GetGPUDescriptorHandleForHeapStart()); mCommandList->DrawIndexedInstanced( mBoxGeo->DrawArgs["box"].IndexCount, 1, 0, 0, 0); // Indicate a state transition on the resource usage. mCommandList->ResourceBarrier(1, &CD3DX12_RESOURCE_BARRIER::Transition(CurrentBackBuffer(), D3D12_RESOURCE_STATE_RENDER_TARGET, D3D12_RESOURCE_STATE_PRESENT)); // Done recording commands. ThrowIfFailed(mCommandList->Close()); // Add the command list to the queue for execution. ID3D12CommandList* cmdsLists[] = { mCommandList.Get() }; mCommandQueue->ExecuteCommandLists(_countof(cmdsLists), cmdsLists); // swap the back and front buffers ThrowIfFailed(mSwapChain->Present(0, 0)); mCurrBackBuffer = (mCurrBackBuffer + 1) % SwapChainBufferCount; // Wait until frame commands are complete. This waiting is inefficient and is // done for simplicity. Later we will show how to organize our rendering code // so we do not have to wait per frame. FlushCommandQueue(); } void BoxApp::OnMouseDown(WPARAM btnState, int x, int y) { mLastMousePos.x = x; mLastMousePos.y = y; SetCapture(mhMainWnd); } void BoxApp::OnMouseUp(WPARAM btnState, int x, int y) { ReleaseCapture(); } void BoxApp::OnMouseMove(WPARAM btnState, int x, int y) { if((btnState & MK_LBUTTON) != 0) { // Make each pixel correspond to a qu