/// <summary>
/// Renders the current frame to each holographic display, according to the
/// current application and spatial positioning state. Returns true if the
/// frame was rendered to at least one display.
/// </summary>
public bool Render(HolographicFrame holographicFrame)
{
// Don't try to render anything before the first Update.
if (timer.FrameCount == 0)
{
return(false);
}
//
// TODO: Add code for pre-pass rendering here.
//
// Take care of any tasks that are not specific to an individual holographic
// camera. This includes anything that doesn't need the final view or projection
// matrix, such as lighting maps.
//
// Up-to-date frame predictions enhance the effectiveness of image stablization and
// allow more accurate positioning of holograms.
holographicFrame.UpdateCurrentPrediction();
HolographicFramePrediction prediction = holographicFrame.CurrentPrediction;
// Lock the set of holographic camera resources, then draw to each camera
// in this frame.
return(deviceResources.UseHolographicCameraResources(
(Dictionary <uint, CameraResources> cameraResourceDictionary) =>
{
bool atLeastOneCameraRendered = false;
foreach (var cameraPose in prediction.CameraPoses)
{
// This represents the device-based resources for a HolographicCamera.
CameraResources cameraResources = cameraResourceDictionary[cameraPose.HolographicCamera.Id];
// Get the device context.
var context = deviceResources.D3DDeviceContext;
var renderTargetView = cameraResources.BackBufferRenderTargetView;
var depthStencilView = cameraResources.DepthStencilView;
// Set render targets to the current holographic camera.
context.OutputMerger.SetRenderTargets(depthStencilView, renderTargetView);
// Clear the back buffer and depth stencil view.
if (canGetHolographicDisplayForCamera &&
cameraPose.HolographicCamera.Display.IsOpaque)
{
SharpDX.Mathematics.Interop.RawColor4 cornflowerBlue = new SharpDX.Mathematics.Interop.RawColor4(0.392156899f, 0.58431375f, 0.929411829f, 1.0f);
context.ClearRenderTargetView(renderTargetView, cornflowerBlue);
}
else
{
SharpDX.Mathematics.Interop.RawColor4 transparent = new SharpDX.Mathematics.Interop.RawColor4(0.0f, 0.0f, 0.0f, 0.0f);
context.ClearRenderTargetView(renderTargetView, transparent);
}
context.ClearDepthStencilView(
depthStencilView,
SharpDX.Direct3D11.DepthStencilClearFlags.Depth | SharpDX.Direct3D11.DepthStencilClearFlags.Stencil,
1.0f,
0);
//
// TODO: Replace the sample content with your own content.
//
// Notes regarding holographic content:
// * For drawing, remember that you have the potential to fill twice as many pixels
// in a stereoscopic render target as compared to a non-stereoscopic render target
// of the same resolution. Avoid unnecessary or repeated writes to the same pixel,
// and only draw holograms that the user can see.
// * To help occlude hologram geometry, you can create a depth map using geometry
// data obtained via the surface mapping APIs. You can use this depth map to avoid
// rendering holograms that are intended to be hidden behind tables, walls,
// monitors, and so on.
// * On HolographicDisplays that are transparent, black pixels will appear transparent
// to the user. On such devices, you should clear the screen to Transparent as shown
// above. You should still use alpha blending to draw semitransparent holograms.
//
// The view and projection matrices for each holographic camera will change
// every frame. This function refreshes the data in the constant buffer for
// the holographic camera indicated by cameraPose.
if (stationaryReferenceFrame != null)
{
cameraResources.UpdateViewProjectionBuffer(deviceResources, cameraPose, stationaryReferenceFrame.CoordinateSystem);
}
// Attach the view/projection constant buffer for this camera to the graphics pipeline.
bool cameraActive = cameraResources.AttachViewProjectionBuffer(deviceResources);
#if DRAW_SAMPLE_CONTENT
// Only render world-locked content when positional tracking is active.
if (cameraActive)
{
// Draw the sample hologram.
spinningCubeRenderer.Render();
if (canCommitDirect3D11DepthBuffer)
{
// On versions of the platform that support the CommitDirect3D11DepthBuffer API, we can
// provide the depth buffer to the system, and it will use depth information to stabilize
// the image at a per-pixel level.
HolographicCameraRenderingParameters renderingParameters = holographicFrame.GetRenderingParameters(cameraPose);
SharpDX.Direct3D11.Texture2D depthBuffer = cameraResources.DepthBufferTexture2D;
// Direct3D interop APIs are used to provide the buffer to the WinRT API.
SharpDX.DXGI.Resource1 depthStencilResource = depthBuffer.QueryInterface <SharpDX.DXGI.Resource1>();
SharpDX.DXGI.Surface2 depthDxgiSurface = new SharpDX.DXGI.Surface2(depthStencilResource, 0);
IDirect3DSurface depthD3DSurface = InteropStatics.CreateDirect3DSurface(depthDxgiSurface.NativePointer);
if (depthD3DSurface != null)
{
// Calling CommitDirect3D11DepthBuffer causes the system to queue Direct3D commands to
// read the depth buffer. It will then use that information to stabilize the image as
// the HolographicFrame is presented.
renderingParameters.CommitDirect3D11DepthBuffer(depthD3DSurface);
}
}
}
#endif
atLeastOneCameraRendered = true;
}
return atLeastOneCameraRendered;
}));
}
/// <summary>
/// Renders the current frame to each holographic display, according to the
/// current application and spatial positioning state. Returns true if the
/// frame was rendered to at least one display.
/// </summary>
public bool Render(ref HolographicFrame holographicFrame)
{
// Don't try to render anything before the first Update.
if (timer.FrameCount == 0)
{
return(false);
}
//
// TODO: Add code for pre-pass rendering here.
//
// Take care of any tasks that are not specific to an individual holographic
// camera. This includes anything that doesn't need the final view or projection
// matrix, such as lighting maps.
//
// Up-to-date frame predictions enhance the effectiveness of image stablization and
// allow more accurate positioning of holograms.
holographicFrame.UpdateCurrentPrediction();
HolographicFramePrediction prediction = holographicFrame.CurrentPrediction;
// Lock the set of holographic camera resources, then draw to each camera
// in this frame.
return(deviceResources.UseHolographicCameraResources(
(Dictionary <uint, CameraResources> cameraResourceDictionary) =>
{
bool atLeastOneCameraRendered = false;
foreach (var cameraPose in prediction.CameraPoses)
{
// This represents the device-based resources for a HolographicCamera.
CameraResources cameraResources = cameraResourceDictionary[cameraPose.HolographicCamera.Id];
// Get the device context.
var context = deviceResources.D3DDeviceContext;
var renderTargetView = cameraResources.BackBufferRenderTargetView;
var depthStencilView = cameraResources.DepthStencilView;
// Set render targets to the current holographic camera.
context.OutputMerger.SetRenderTargets(depthStencilView, renderTargetView);
// Clear the back buffer and depth stencil view.
SharpDX.Mathematics.Interop.RawColor4 transparent = new SharpDX.Mathematics.Interop.RawColor4(0.0f, 0.0f, 0.0f, 0.0f);
context.ClearRenderTargetView(renderTargetView, transparent);
context.ClearDepthStencilView(
depthStencilView,
SharpDX.Direct3D11.DepthStencilClearFlags.Depth | SharpDX.Direct3D11.DepthStencilClearFlags.Stencil,
1.0f,
0);
//
// TODO: Replace the sample content with your own content.
//
// Notes regarding holographic content:
// * For drawing, remember that you have the potential to fill twice as many pixels
// in a stereoscopic render target as compared to a non-stereoscopic render target
// of the same resolution. Avoid unnecessary or repeated writes to the same pixel,
// and only draw holograms that the user can see.
// * To help occlude hologram geometry, you can create a depth map using geometry
// data obtained via the surface mapping APIs. You can use this depth map to avoid
// rendering holograms that are intended to be hidden behind tables, walls,
// monitors, and so on.
// * Black pixels will appear transparent to the user wearing the device, but you
// should still use alpha blending to draw semitransparent holograms. You should
// also clear the screen to Transparent as shown above.
//
// The view and projection matrices for each holographic camera will change
// every frame. This function refreshes the data in the constant buffer for
// the holographic camera indicated by cameraPose.
cameraResources.UpdateViewProjectionBuffer(deviceResources, cameraPose, referenceFrame.CoordinateSystem);
// Attach the view/projection constant buffer for this camera to the graphics pipeline.
bool cameraActive = cameraResources.AttachViewProjectionBuffer(deviceResources);
#if DRAW_SAMPLE_CONTENT
// Only render world-locked content when positional tracking is active.
if (cameraActive)
{
// Draw the sample hologram.
spinningCubeRenderer.Render();
_spatialSurfaceRenderer.Render();
}
#endif
atLeastOneCameraRendered = true;
}
return atLeastOneCameraRendered;
}));
}
