diff options
Diffstat (limited to 'support/hololens/ServoApp/Common/CameraResources.cpp')
| -rw-r--r-- | support/hololens/ServoApp/Common/CameraResources.cpp | 234 |
1 files changed, 0 insertions, 234 deletions
diff --git a/support/hololens/ServoApp/Common/CameraResources.cpp b/support/hololens/ServoApp/Common/CameraResources.cpp deleted file mode 100644 index 4391a55c74e..00000000000 --- a/support/hololens/ServoApp/Common/CameraResources.cpp +++ /dev/null @@ -1,234 +0,0 @@ -#include "pch.h" - -#include "CameraResources.h" -#include "Common/DirectXHelper.h" -#include "DeviceResources.h" - -using namespace DirectX; -using namespace Microsoft::WRL; -using namespace winrt::Windows::Foundation::Numerics; -using namespace winrt::Windows::Graphics::DirectX::Direct3D11; -using namespace winrt::Windows::Graphics::Holographic; -using namespace winrt::Windows::Perception::Spatial; - -DX::CameraResources::CameraResources(HolographicCamera const &camera) - : m_holographicCamera(camera), m_isStereo(camera.IsStereo()), - m_d3dRenderTargetSize(camera.RenderTargetSize()) { - m_d3dViewport = CD3D11_VIEWPORT(0.f, 0.f, m_d3dRenderTargetSize.Width, - m_d3dRenderTargetSize.Height); -}; - -// Updates resources associated with a holographic camera's swap chain. -// The app does not access the swap chain directly, but it does create -// resource views for the back buffer. -void DX::CameraResources::CreateResourcesForBackBuffer( - DX::DeviceResources *pDeviceResources, - HolographicCameraRenderingParameters const &cameraParameters) { - ID3D11Device *device = pDeviceResources->GetD3DDevice(); - - // Get the WinRT object representing the holographic camera's back buffer. - IDirect3DSurface surface = cameraParameters.Direct3D11BackBuffer(); - - // Get the holographic camera's back buffer. - // Holographic apps do not create a swap chain themselves; instead, buffers - // are owned by the system. The Direct3D back buffer resources are provided to - // the app using WinRT interop APIs. - ComPtr<ID3D11Texture2D> cameraBackBuffer; - winrt::check_hresult(surface - .as<::Windows::Graphics::DirectX::Direct3D11:: - IDirect3DDxgiInterfaceAccess>() - ->GetInterface(IID_PPV_ARGS(&cameraBackBuffer))); - - // Determine if the back buffer has changed. If so, ensure that the render - // target view is for the current back buffer. - if (m_d3dBackBuffer.Get() != cameraBackBuffer.Get()) { - // This can change every frame as the system moves to the next buffer in the - // swap chain. This mode of operation will occur when certain rendering - // modes are activated. - m_d3dBackBuffer = cameraBackBuffer; - - // Create a render target view of the back buffer. - // Creating this resource is inexpensive, and is better than keeping track - // of the back buffers in order to pre-allocate render target views for each - // one. - winrt::check_hresult(device->CreateRenderTargetView( - m_d3dBackBuffer.Get(), nullptr, &m_d3dRenderTargetView)); - - // Get the DXGI format for the back buffer. - // This information can be accessed by the app using - // CameraResources::GetBackBufferDXGIFormat(). - D3D11_TEXTURE2D_DESC backBufferDesc; - m_d3dBackBuffer->GetDesc(&backBufferDesc); - m_dxgiFormat = backBufferDesc.Format; - - // Check for render target size changes. - winrt::Windows::Foundation::Size currentSize = - m_holographicCamera.RenderTargetSize(); - if (m_d3dRenderTargetSize != currentSize) { - // Set render target size. - m_d3dRenderTargetSize = currentSize; - - // A new depth stencil view is also needed. - m_d3dDepthStencilView.Reset(); - } - } - - // Refresh depth stencil resources, if needed. - if (m_d3dDepthStencilView == nullptr) { - // Create a depth stencil view for use with 3D rendering if needed. - CD3D11_TEXTURE2D_DESC depthStencilDesc( - DXGI_FORMAT_R16_TYPELESS, - static_cast<UINT>(m_d3dRenderTargetSize.Width), - static_cast<UINT>(m_d3dRenderTargetSize.Height), - m_isStereo ? 2 : 1, // Create two textures when rendering in stereo. - 1, // Use a single mipmap level. - D3D11_BIND_DEPTH_STENCIL | D3D11_BIND_SHADER_RESOURCE); - - winrt::check_hresult(device->CreateTexture2D(&depthStencilDesc, nullptr, - &m_d3dDepthStencil)); - - CD3D11_DEPTH_STENCIL_VIEW_DESC depthStencilViewDesc( - m_isStereo ? D3D11_DSV_DIMENSION_TEXTURE2DARRAY - : D3D11_DSV_DIMENSION_TEXTURE2D, - DXGI_FORMAT_D16_UNORM); - winrt::check_hresult(device->CreateDepthStencilView( - m_d3dDepthStencil.Get(), &depthStencilViewDesc, - &m_d3dDepthStencilView)); - } - - // Create the constant buffer, if needed. - if (m_viewProjectionConstantBuffer == nullptr) { - // Create a constant buffer to store view and projection matrices for the - // camera. - CD3D11_BUFFER_DESC constantBufferDesc(sizeof(ViewProjectionConstantBuffer), - D3D11_BIND_CONSTANT_BUFFER); - winrt::check_hresult(device->CreateBuffer(&constantBufferDesc, nullptr, - &m_viewProjectionConstantBuffer)); - } -} - -// Releases resources associated with a back buffer. -void DX::CameraResources::ReleaseResourcesForBackBuffer( - DX::DeviceResources *pDeviceResources) { - ID3D11DeviceContext *context = pDeviceResources->GetD3DDeviceContext(); - - // Release camera-specific resources. - m_d3dBackBuffer.Reset(); - m_d3dDepthStencil.Reset(); - m_d3dRenderTargetView.Reset(); - m_d3dDepthStencilView.Reset(); - m_viewProjectionConstantBuffer.Reset(); - - // Ensure system references to the back buffer are released by clearing the - // render target from the graphics pipeline state, and then flushing the - // Direct3D context. - ID3D11RenderTargetView *nullViews[D3D11_SIMULTANEOUS_RENDER_TARGET_COUNT] = { - nullptr}; - context->OMSetRenderTargets(ARRAYSIZE(nullViews), nullViews, nullptr); - context->Flush(); -} - -// Updates the view/projection constant buffer for a holographic camera. -void DX::CameraResources::UpdateViewProjectionBuffer( - std::shared_ptr<DX::DeviceResources> deviceResources, - HolographicCameraPose const &cameraPose, - SpatialCoordinateSystem const &coordinateSystem) { - // The system changes the viewport on a per-frame basis for system - // optimizations. - auto viewport = cameraPose.Viewport(); - m_d3dViewport = - CD3D11_VIEWPORT(viewport.X, viewport.Y, viewport.Width, viewport.Height); - - // The projection transform for each frame is provided by the - // HolographicCameraPose. - HolographicStereoTransform cameraProjectionTransform = - cameraPose.ProjectionTransform(); - - // Get a container object with the view and projection matrices for the given - // pose in the given coordinate system. - auto viewTransformContainer = - cameraPose.TryGetViewTransform(coordinateSystem); - - // If TryGetViewTransform returns a null pointer, that means the pose and - // coordinate system cannot be understood relative to one another; content - // cannot be rendered in this coordinate system for the duration of the - // current frame. This usually means that positional tracking is not active - // for the current frame, in which case it is possible to use a - // SpatialLocatorAttachedFrameOfReference to render content that is not - // world-locked instead. - DX::ViewProjectionConstantBuffer viewProjectionConstantBufferData; - bool viewTransformAcquired = viewTransformContainer != nullptr; - if (viewTransformAcquired) { - // Otherwise, the set of view transforms can be retrieved. - HolographicStereoTransform viewCoordinateSystemTransform = - viewTransformContainer.Value(); - - // Update the view matrices. Holographic cameras (such as Microsoft - // HoloLens) are constantly moving relative to the world. The view matrices - // need to be updated every frame. - XMStoreFloat4x4( - &viewProjectionConstantBufferData.viewProjection[0], - XMMatrixTranspose(XMLoadFloat4x4(&viewCoordinateSystemTransform.Left) * - XMLoadFloat4x4(&cameraProjectionTransform.Left))); - XMStoreFloat4x4( - &viewProjectionConstantBufferData.viewProjection[1], - XMMatrixTranspose(XMLoadFloat4x4(&viewCoordinateSystemTransform.Right) * - XMLoadFloat4x4(&cameraProjectionTransform.Right))); - } - - // Use the D3D device context to update Direct3D device-based resources. - ID3D11DeviceContext *context = deviceResources->GetD3DDeviceContext(); - - // Loading is asynchronous. Resources must be created before they can be - // updated. - if (context == nullptr || m_viewProjectionConstantBuffer == nullptr || - !viewTransformAcquired) { - m_framePending = false; - } else { - // Update the view and projection matrices. - context->UpdateSubresource(m_viewProjectionConstantBuffer.Get(), 0, nullptr, - &viewProjectionConstantBufferData, 0, 0); - - m_framePending = true; - } -} - -// Gets the view-projection constant buffer for the HolographicCamera and -// attaches it to the shader pipeline. -bool DX::CameraResources::AttachViewProjectionBuffer( - std::shared_ptr<DX::DeviceResources> &deviceResources) { - // This method uses Direct3D device-based resources. - ID3D11DeviceContext *context = deviceResources->GetD3DDeviceContext(); - - // Loading is asynchronous. Resources must be created before they can be - // updated. Cameras can also be added asynchronously, in which case they must - // be initialized before they can be used. - if (context == nullptr || m_viewProjectionConstantBuffer == nullptr || - m_framePending == false) { - return false; - } - - // Set the viewport for this camera. - context->RSSetViewports(1, &m_d3dViewport); - - // Send the constant buffer to the vertex shader. - context->VSSetConstantBuffers(1, 1, - m_viewProjectionConstantBuffer.GetAddressOf()); - - // The template includes a pass-through geometry shader that is used by - // default on systems that don't support the D3D11_FEATURE_D3D11_OPTIONS3:: - // VPAndRTArrayIndexFromAnyShaderFeedingRasterizer extension. The shader - // will be enabled at run-time on systems that require it. - // If your app will also use the geometry shader for other tasks and those - // tasks require the view/projection matrix, uncomment the following line - // of code to send the constant buffer to the geometry shader as well. - /*context->GSSetConstantBuffers( - 1, - 1, - m_viewProjectionConstantBuffer.GetAddressOf() - );*/ - - m_framePending = false; - - return true; -} |