/// <summary>
/// Gets the view-projection constant buffer for the display, and attaches it
/// to the shader pipeline.
/// </summary>
public bool AttachViewProjectionBuffer(DeviceResources deviceResources)
{
// This method uses Direct3D device-based resources.
var context = deviceResources.D3DDeviceContext;
// 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 == null || viewProjectionConstantBuffer == null || !framePending)
{
return(false);
}
// Set the viewport for this camera.
context.Rasterizer.SetViewport(Viewport);
// Send the constant buffer to the vertex shader.
context.VertexShader.SetConstantBuffers(1, viewProjectionConstantBuffer);
// 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.GeometryShader.SetConstantBuffers(1, viewProjectionConstantBuffer);
framePending = false;
return(true);
}
public RenderableCubemap(DeviceResources resources, Vector3 position, int resolution = 1024, int mipCount = 1)
{
Resources = resources;
Position = position;
Resolution = resolution;
MipCount = mipCount;
MipRenderTargetViews = new RenderTargetView[MipCount];
MipShaderResourceViews = new ShaderResourceView[MipCount];
RenderTargetViews = new ReadOnlyCollection <RenderTargetView>(MipRenderTargetViews);
ShaderResourceViews = new ReadOnlyCollection <ShaderResourceView>(MipShaderResourceViews);
}
public static void ExportTexture(DeviceResources resources, StorageFile textureFile, Texture2D texture)
{
var device = resources.D3DDevice;
var context = resources.D3DDeviceContext;
var textureToSave = texture;
var outputTexture = new Texture2D(device, new Texture2DDescription
{
Width = textureToSave.Description.Width,
Height = textureToSave.Description.Height,
MipLevels = 1,
ArraySize = 1,
Format = textureToSave.Description.Format,
Usage = ResourceUsage.Staging,
SampleDescription = new SampleDescription(1, 0),
BindFlags = BindFlags.None,
CpuAccessFlags = CpuAccessFlags.Read,
OptionFlags = ResourceOptionFlags.None
});
context.CopyResource(textureToSave, outputTexture);
var mappedResource = context.MapSubresource(outputTexture, 0, 0, MapMode.Read, SharpDX.Direct3D11.MapFlags.None, out var dataStream);
var dataRectangle = new DataRectangle
{
DataPointer = dataStream.DataPointer,
Pitch = mappedResource.RowPitch
};
var imagingFactory = new ImagingFactory();
var bitmap = new Bitmap(imagingFactory, outputTexture.Description.Width, outputTexture.Description.Height, PixelFormat.Format32bppRGBA, dataRectangle);
using (var stream = new MemoryStream())
using (var bitmapEncoder = new PngBitmapEncoder(imagingFactory, stream))
using (var bitmapFrame = new BitmapFrameEncode(bitmapEncoder))
{
bitmapFrame.Initialize();
bitmapFrame.SetSize(bitmap.Size.Width, bitmap.Size.Height);
var pixelFormat = PixelFormat.FormatDontCare;
bitmapFrame.SetPixelFormat(ref pixelFormat);
bitmapFrame.WriteSource(bitmap);
bitmapFrame.Commit();
bitmapEncoder.Commit();
FileIO.WriteBytesAsync(textureFile, stream.ToArray()).AsTask().Wait(-1);
}
context.UnmapSubresource(outputTexture, 0);
outputTexture.Dispose();
bitmap.Dispose();
}
/// <summary>
/// Releases resources associated with a holographic display back buffer.
/// </summary>
public void ReleaseResourcesForBackBuffer(DeviceResources deviceResources)
{
var context = deviceResources.D3DDeviceContext;
RemoveAndDispose(ref d3dBackBuffer);
RemoveAndDispose(ref d3dRenderTargetView);
RemoveAndDispose(ref d3dDepthStencilView);
const int D3D11_SIMULTANEOUS_RENDER_TARGET_COUNT = 8;
RenderTargetView[] nullViews = new RenderTargetView[D3D11_SIMULTANEOUS_RENDER_TARGET_COUNT];
// 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.
context.OutputMerger.SetRenderTargets(null, nullViews);
context.Flush();
}
public static async Task <Model> LoadObj(DeviceResources deviceResources, string path)
{
var folder = Windows.ApplicationModel.Package.Current.InstalledLocation;
var fileContent = await FileIO.ReadLinesAsync(await folder.GetFileAsync(path));
var positions = new List <Vector3>();
var uvs = new List <Vector2>();
var normals = new List <Vector3>();
var output = new List <VertexPositionNormalUV>();
foreach (var line in fileContent)
{
var parts = line.Split(' ');
if (parts[0] == "v")
{
positions.Add(new Vector3(float.Parse(parts[1]), float.Parse(parts[2]), float.Parse(parts[3])));
}
else if (parts[0] == "vt")
{
uvs.Add(new Vector2(float.Parse(parts[1]), float.Parse(parts[2])));
}
else if (parts[0] == "vn")
{
normals.Add(new Vector3(float.Parse(parts[1]), float.Parse(parts[2]), float.Parse(parts[3])));
}
else if (parts[0] == "f")
{
for (int i = 1; i <= 3; i++)
{
var indices = parts[i].Split('/').Select(index => int.Parse(index) - 1).ToArray();
output.Add(new VertexPositionNormalUV
{
Position = positions[indices[0]],
UV = uvs[indices[1]],
Normal = normals[indices[2]]
});
}
}
}
return(new Model(deviceResources, output.ToArray()));
}
/// <summary>
/// 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.
/// </summary>
public void CreateResourcesForBackBuffer(
DeviceResources deviceResources,
HolographicCameraRenderingParameters cameraParameters
)
{
var device = deviceResources.D3DDevice;
// Get the WinRT object representing the holographic camera's back buffer.
IDirect3DSurface surface = cameraParameters.Direct3D11BackBuffer;
// Get a DXGI interface for the holographic camera's back buffer.
// Holographic cameras do not provide the DXGI swap chain, which is owned
// by the system. The Direct3D back buffer resource is provided using WinRT
// interop APIs.
InteropStatics.IDirect3DDxgiInterfaceAccess surfaceDxgiInterfaceAccess = surface as InteropStatics.IDirect3DDxgiInterfaceAccess;
IntPtr pResource = surfaceDxgiInterfaceAccess.GetInterface(InteropStatics.ID3D11Resource);
SharpDX.Direct3D11.Resource resource = SharpDX.Direct3D11.Resource.FromPointer <SharpDX.Direct3D11.Resource>(pResource);
Marshal.Release(pResource);
// Get a Direct3D interface for the holographic camera's back buffer.
Texture2D cameraBackBuffer = resource.QueryInterface <Texture2D>();
// Determine if the back buffer has changed. If so, ensure that the render target view
// is for the current back buffer.
if ((null == d3dBackBuffer) || (d3dBackBuffer.NativePointer != cameraBackBuffer.NativePointer))
{
// 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.
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.
d3dRenderTargetView = ToDispose(new RenderTargetView(device, BackBufferTexture2D));
// Get the DXGI format for the back buffer.
// This information can be accessed by the app using CameraResources::GetBackBufferDXGIFormat().
Texture2DDescription backBufferDesc = BackBufferTexture2D.Description;
dxgiFormat = backBufferDesc.Format;
// Check for render target size changes.
Size currentSize = holographicCamera.RenderTargetSize;
if (d3dRenderTargetSize != currentSize)
{
// Set render target size.
d3dRenderTargetSize = HolographicCamera.RenderTargetSize;
// A new depth stencil view is also needed.
RemoveAndDispose(ref d3dDepthStencilView);
}
}
// Refresh depth stencil resources, if needed.
if (null == DepthStencilView)
{
// Create a depth stencil view for use with 3D rendering if needed.
var depthStencilDesc = new Texture2DDescription
{
Format = SharpDX.DXGI.Format.D16_UNorm,
Width = (int)RenderTargetSize.Width,
Height = (int)RenderTargetSize.Height,
ArraySize = IsRenderingStereoscopic ? 2 : 1, // Create two textures when rendering in stereo.
MipLevels = 1, // Use a single mipmap level.
BindFlags = BindFlags.DepthStencil,
SampleDescription = new SharpDX.DXGI.SampleDescription(1, 0)
};
using (var depthStencil = new Texture2D(device, depthStencilDesc))
{
var depthStencilViewDesc = new DepthStencilViewDescription();
depthStencilViewDesc.Dimension = IsRenderingStereoscopic ? DepthStencilViewDimension.Texture2DArray : DepthStencilViewDimension.Texture2D;
depthStencilViewDesc.Texture2DArray.ArraySize = IsRenderingStereoscopic ? 2 : 0;
d3dDepthStencilView = ToDispose(new DepthStencilView(device, depthStencil, depthStencilViewDesc));
}
}
// Create the constant buffer, if needed.
if (null == viewProjectionConstantBuffer)
{
// Create a constant buffer to store view and projection matrices for the camera.
ViewProjectionConstantBuffer viewProjectionConstantBufferData = new ViewProjectionConstantBuffer();
viewProjectionConstantBuffer = ToDispose(SharpDX.Direct3D11.Buffer.Create(
device,
BindFlags.ConstantBuffer,
ref viewProjectionConstantBufferData));
}
}
/// <summary>
/// Updates the constant buffer for the display with view and projection
/// matrices for the current frame.
/// </summary>
public void UpdateViewProjectionBuffer(
DeviceResources deviceResources,
HolographicCameraPose cameraPose,
SpatialCoordinateSystem coordinateSystem
)
{
// The system changes the viewport on a per-frame basis for system optimizations.
d3dViewport.X = (float)cameraPose.Viewport.Left;
d3dViewport.Y = (float)cameraPose.Viewport.Top;
d3dViewport.Width = (float)cameraPose.Viewport.Width;
d3dViewport.Height = (float)cameraPose.Viewport.Height;
d3dViewport.MinDepth = 0;
d3dViewport.MaxDepth = 1;
// 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.
HolographicStereoTransform?viewTransformContainer = cameraPose.TryGetViewTransform(coordinateSystem);
// If TryGetViewTransform returns null, 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.
ViewProjectionConstantBuffer viewProjectionConstantBufferData = new ViewProjectionConstantBuffer();
bool viewTransformAcquired = viewTransformContainer.HasValue;
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.
viewProjectionConstantBufferData.viewProjectionLeft = Matrix4x4.Transpose(
viewCoordinateSystemTransform.Left * cameraProjectionTransform.Left
);
viewProjectionConstantBufferData.viewProjectionRight = Matrix4x4.Transpose(
viewCoordinateSystemTransform.Right * cameraProjectionTransform.Right
);
}
// Use the D3D device context to update Direct3D device-based resources.
var context = deviceResources.D3DDeviceContext;
// Loading is asynchronous. Resources must be created before they can be updated.
if (context == null || viewProjectionConstantBuffer == null || !viewTransformAcquired)
{
framePending = false;
}
else
{
// Update the view and projection matrices.
context.UpdateSubresource(ref viewProjectionConstantBufferData, viewProjectionConstantBuffer);
framePending = true;
}
}
public void ReleaseAllDeviceResources(DeviceResources deviceResources)
{
ReleaseResourcesForBackBuffer(deviceResources);
RemoveAndDispose(ref viewProjectionConstantBuffer);
}
public MeshTextureSet(DeviceResources resources, int resolution)
{
Resources = resources;
Resolution = resolution;
}
