/// <summary>
/// UpdateRenderingContext is called from the BeginVirtualRealityRenderingStep and should update the properties in the RenderingContext according to the current eye.
/// See remarks for more info about the usual tasks that are preformed in this method.
/// </summary>
/// <remarks>
/// <para>
/// <b>UpdateRenderingContext</b> is called from the BeginVirtualRealityRenderingStep and should update the properties in the RenderingContext according to the current eye.
/// </para>
/// <para>
/// This method is usually called from the <see cref="BeginVirtualRealityRenderingStep"/> (when the virtual reality provider is enabled).
/// </para>
/// <para>
/// Usually this method does the following:<br/>
/// - Creates the back buffers and views that are needed for rendering
/// (the back buffers are also recreated if the size of <see cref="RenderingContext.CurrentBackBufferDescription"/> is different from the size of previously created back buffers).<br/>
/// - Updates the <see cref="VirtualRealityContext.CurrentEye"/> property.<br/>
/// - Sets the <see cref="RenderingContext.UsedCamera"/> property to a <see cref="StereoscopicCamera"/><br/>
/// - Calls <see cref="RenderingContext.SetBackBuffer"/> method and sets the new back buffers.<br/>
/// - Updates <see cref="ResolveMultisampledBackBufferRenderingStep.DestinationBuffer"/> on the <see cref="DXScene.DefaultResolveMultisampledBackBufferRenderingStep"/> and sets it to the eye texture.
/// </para>
/// </remarks>
/// <param name="renderingContext">RenderingContext</param>
/// <param name="isNewFrame">true if no eye was yet rendered for the current frame; false if the first eye was already rendered for the current frame and we need to render the second eye</param>
public override void UpdateRenderingContext(RenderingContext renderingContext, bool isNewFrame)
{
// This code is executed inside BeginVirtualRealityRenderingStep before all the objects are rendered.
// Base method does:
// - sets the virtualRealityContext.CurrentEye based on the isNewFrame parameter: isNewFrame == true => LeftEye else RightEye
// - ensures that stereoscopicCamera is created and sets its properties for the current eye and based on the current EyeSeparation, Parallax and InvertLeftRightView
// - sets renderingContext.UsedCamera = stereoscopicCamera
base.UpdateRenderingContext(renderingContext, isNewFrame);
var virtualRealityContext = renderingContext.VirtualRealityContext;
Eye currentEye = virtualRealityContext.CurrentEye;
EyeType ovrEye = currentEye == Eye.Left ? EyeType.Left : EyeType.Right;
int eyeIndex = currentEye == Eye.Left ? 0 : 1;
FovPort defaultEyeFov = _hmdDesc.DefaultEyeFov[eyeIndex];
var idealSize = _ovr.GetFovTextureSize(_sessionPtr, ovrEye, defaultEyeFov, _pixelsPerDisplayPixel);
// When we render this frame for the first time
// we also check that all the required resources are created
// Check if we need to create or recreate the RenderTargetViews and DepthStencilViews
if (isNewFrame &&
(_eyeTextureSwapChains[eyeIndex] == null ||
_eyeTextureSwapChains[eyeIndex].Size.Width != idealSize.Width ||
_eyeTextureSwapChains[eyeIndex].Size.Height != idealSize.Height))
{
CreateResources(renderingContext.DXScene);
}
if (isNewFrame)
{
_ovr.GetEyePoses(_sessionPtr, 0L, true, _hmdToEyeOffset, ref _eyePoses, out _sensorSampleTime);
}
var camera = renderingContext.DXScene.Camera;
// From OculusRoomTiny main.cpp #221
//Get the pose information
var eyeQuat = SharpDXHelpers.ToQuaternion(_eyePoses[eyeIndex].Orientation);
var eyePos = SharpDXHelpers.ToVector3(_eyePoses[eyeIndex].Position);
// Get view and projection matrices for the Rift camera
Vector3 cameraPosition = camera.GetCameraPosition();
Matrix cameraRotationMatrix = camera.View;
cameraRotationMatrix.M41 = 0; // Remove translation
cameraRotationMatrix.M42 = 0;
cameraRotationMatrix.M43 = 0;
cameraRotationMatrix.Invert(); // Invert to get rotation matrix
Vector4 rotatedEyePos4 = Vector3.Transform(eyePos, cameraRotationMatrix);
var rotatedEyePos = new Vector3(rotatedEyePos4.X, rotatedEyePos4.Y, rotatedEyePos4.Z);
var finalCameraPosition = cameraPosition + rotatedEyePos;
var eyeQuaternionMatrix = Matrix.RotationQuaternion(eyeQuat);
var finalRotationMatrix = eyeQuaternionMatrix * cameraRotationMatrix;
Vector4 lookDirection4 = Vector3.Transform(new Vector3(0, 0, -1), finalRotationMatrix);
var lookDirection = new Vector3(lookDirection4.X, lookDirection4.Y, lookDirection4.Z);
Vector4 upDirection4 = Vector3.Transform(Vector3.UnitY, finalRotationMatrix);
var upDirection = new Vector3(upDirection4.X, upDirection4.Y, upDirection4.Z);
var viewMatrix = Matrix.LookAtRH(finalCameraPosition, finalCameraPosition + lookDirection, upDirection);
float zNear = camera.NearPlaneDistance;
float zFar = camera.FarPlaneDistance;
if (zNear < 0.05f)
{
zNear = 0.05f;
}
zFar *= 1.2f; // increase the zFar - the FarPlaneDistance is not exactly correct because the camera can be higher because the eye's Position can be over the Camera's position
//zNear = 0.1f;
//zFar = 100;
var eyeRenderDesc = _ovr.GetRenderDesc(_sessionPtr, ovrEye, _hmdDesc.DefaultEyeFov[eyeIndex]);
var projectionMatrix = _ovr.Matrix4f_Projection(eyeRenderDesc.Fov, zNear, zFar, ProjectionModifier.None).ToMatrix();
projectionMatrix.Transpose();
_matrixCamera.Projection = projectionMatrix;
_matrixCamera.View = viewMatrix;
_matrixCamera.SetCameraPosition(finalCameraPosition);
renderingContext.UsedCamera = _matrixCamera;
// Change the current viewport
renderingContext.CurrentViewport = _eyeTextureSwapChains[eyeIndex].Viewport;
renderingContext.DeviceContext.Rasterizer.SetViewport(renderingContext.CurrentViewport);
if (_msaaBackBuffer == null)
{
renderingContext.SetBackBuffer(backBuffer: _eyeTextureSwapChains[eyeIndex].CurrentTexture,
backBufferDescription: _eyeTextureSwapChains[eyeIndex].CurrentTextureDescription,
renderTargetView: _eyeTextureSwapChains[eyeIndex].CurrentRTView,
depthStencilView: _eyeTextureSwapChains[eyeIndex].CurrentDepthStencilView,
bindNewRenderTargetsToDeviceContext: false); // Do not bind new buffers because this is done in the next rendering step - PrepareRenderTargetsRenderingStep
}
else
{
// MSAA
renderingContext.SetBackBuffer(backBuffer: _msaaBackBuffer,
backBufferDescription: _msaaBackBufferDescription,
renderTargetView: _msaaBackBufferRenderTargetView,
depthStencilView: _msaaDepthStencilView,
bindNewRenderTargetsToDeviceContext: false); // Do not bind new buffers because this is done in the next rendering step - PrepareRenderTargetsRenderingStep
renderingContext.DXScene.DefaultResolveMultisampledBackBufferRenderingStep.DestinationBuffer = _eyeTextureSwapChains[eyeIndex].CurrentTexture;
}
// When we render this frame for the first time set the NewViewport on the ChangeBackBufferRenderingStep to resets the Viewport from split screen viewport to the final full screen viewport
if (isNewFrame && _resetViewportRenderingStep != null)
{
int backBufferWidth = renderingContext.FinalBackBufferDescription.Width;
int backBufferHeight = renderingContext.FinalBackBufferDescription.Height;
_resetViewportRenderingStep.NewViewport = new ViewportF(0, 0, backBufferWidth, backBufferHeight);
}
}
private static void Main()
{
RenderForm form = new RenderForm("OculusWrap SharpDX demo");
IntPtr sessionPtr;
InputLayout inputLayout = null;
Buffer contantBuffer = null;
Buffer vertexBuffer = null;
ShaderSignature shaderSignature = null;
PixelShader pixelShader = null;
ShaderBytecode pixelShaderByteCode = null;
VertexShader vertexShader = null;
ShaderBytecode vertexShaderByteCode = null;
Texture2D mirrorTextureD3D = null;
EyeTexture[] eyeTextures = null;
DeviceContext immediateContext = null;
DepthStencilState depthStencilState = null;
DepthStencilView depthStencilView = null;
Texture2D depthBuffer = null;
RenderTargetView backBufferRenderTargetView = null;
Texture2D backBuffer = null;
SharpDX.DXGI.SwapChain swapChain = null;
Factory factory = null;
MirrorTexture mirrorTexture = null;
Guid textureInterfaceId = new Guid("6f15aaf2-d208-4e89-9ab4-489535d34f9c"); // Interface ID of the Direct3D Texture2D interface.
Result result;
OvrWrap OVR = OvrWrap.Create();
// Define initialization parameters with debug flag.
InitParams initializationParameters = new InitParams();
initializationParameters.Flags = InitFlags.Debug | InitFlags.RequestVersion;
initializationParameters.RequestedMinorVersion = 17;
// Initialize the Oculus runtime.
string errorReason = null;
try
{
result = OVR.Initialize(initializationParameters);
if (result < Result.Success)
{
errorReason = result.ToString();
}
}
catch (Exception ex)
{
errorReason = ex.Message;
}
if (errorReason != null)
{
MessageBox.Show("Failed to initialize the Oculus runtime library:\r\n" + errorReason, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
// Use the head mounted display.
sessionPtr = IntPtr.Zero;
var graphicsLuid = new GraphicsLuid();
result = OVR.Create(ref sessionPtr, ref graphicsLuid);
if (result < Result.Success)
{
MessageBox.Show("The HMD is not enabled: " + result.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
var hmdDesc = OVR.GetHmdDesc(sessionPtr);
try
{
// Create a set of layers to submit.
eyeTextures = new EyeTexture[2];
// Create DirectX drawing device.
SharpDX.Direct3D11.Device device = new Device(SharpDX.Direct3D.DriverType.Hardware, DeviceCreationFlags.Debug);
// Create DirectX Graphics Interface factory, used to create the swap chain.
factory = new SharpDX.DXGI.Factory4();
immediateContext = device.ImmediateContext;
// Define the properties of the swap chain.
SwapChainDescription swapChainDescription = new SwapChainDescription();
swapChainDescription.BufferCount = 1;
swapChainDescription.IsWindowed = true;
swapChainDescription.OutputHandle = form.Handle;
swapChainDescription.SampleDescription = new SampleDescription(1, 0);
swapChainDescription.Usage = Usage.RenderTargetOutput | Usage.ShaderInput;
swapChainDescription.SwapEffect = SwapEffect.Sequential;
swapChainDescription.Flags = SwapChainFlags.AllowModeSwitch;
swapChainDescription.ModeDescription.Width = form.Width;
swapChainDescription.ModeDescription.Height = form.Height;
swapChainDescription.ModeDescription.Format = Format.R8G8B8A8_UNorm;
swapChainDescription.ModeDescription.RefreshRate.Numerator = 0;
swapChainDescription.ModeDescription.RefreshRate.Denominator = 1;
// Create the swap chain.
swapChain = new SwapChain(factory, device, swapChainDescription);
// Retrieve the back buffer of the swap chain.
backBuffer = swapChain.GetBackBuffer <Texture2D>(0);
backBufferRenderTargetView = new RenderTargetView(device, backBuffer);
// Create a depth buffer, using the same width and height as the back buffer.
Texture2DDescription depthBufferDescription = new Texture2DDescription();
depthBufferDescription.Format = Format.D32_Float;
depthBufferDescription.ArraySize = 1;
depthBufferDescription.MipLevels = 1;
depthBufferDescription.Width = form.Width;
depthBufferDescription.Height = form.Height;
depthBufferDescription.SampleDescription = new SampleDescription(1, 0);
depthBufferDescription.Usage = ResourceUsage.Default;
depthBufferDescription.BindFlags = BindFlags.DepthStencil;
depthBufferDescription.CpuAccessFlags = CpuAccessFlags.None;
depthBufferDescription.OptionFlags = ResourceOptionFlags.None;
// Define how the depth buffer will be used to filter out objects, based on their distance from the viewer.
DepthStencilStateDescription depthStencilStateDescription = new DepthStencilStateDescription();
depthStencilStateDescription.IsDepthEnabled = true;
depthStencilStateDescription.DepthComparison = Comparison.Less;
depthStencilStateDescription.DepthWriteMask = DepthWriteMask.Zero;
// Create the depth buffer.
depthBuffer = new Texture2D(device, depthBufferDescription);
depthStencilView = new DepthStencilView(device, depthBuffer);
depthStencilState = new DepthStencilState(device, depthStencilStateDescription);
var viewport = new Viewport(0, 0, hmdDesc.Resolution.Width, hmdDesc.Resolution.Height, 0.0f, 1.0f);
immediateContext.OutputMerger.SetDepthStencilState(depthStencilState);
immediateContext.OutputMerger.SetRenderTargets(depthStencilView, backBufferRenderTargetView);
immediateContext.Rasterizer.SetViewport(viewport);
// Retrieve the DXGI device, in order to set the maximum frame latency.
using (SharpDX.DXGI.Device1 dxgiDevice = device.QueryInterface <SharpDX.DXGI.Device1>())
{
dxgiDevice.MaximumFrameLatency = 1;
}
var layerEyeFov = new LayerEyeFov();
layerEyeFov.Header.Type = LayerType.EyeFov;
layerEyeFov.Header.Flags = LayerFlags.None;
for (int eyeIndex = 0; eyeIndex < 2; eyeIndex++)
{
EyeType eye = (EyeType)eyeIndex;
var eyeTexture = new EyeTexture();
eyeTextures[eyeIndex] = eyeTexture;
// Retrieve size and position of the texture for the current eye.
eyeTexture.FieldOfView = hmdDesc.DefaultEyeFov[eyeIndex];
eyeTexture.TextureSize = OVR.GetFovTextureSize(sessionPtr, eye, hmdDesc.DefaultEyeFov[eyeIndex], 1.0f);
eyeTexture.RenderDescription = OVR.GetRenderDesc(sessionPtr, eye, hmdDesc.DefaultEyeFov[eyeIndex]);
eyeTexture.HmdToEyeViewOffset = eyeTexture.RenderDescription.HmdToEyePose.Position;
eyeTexture.ViewportSize.Position = new Vector2i(0, 0);
eyeTexture.ViewportSize.Size = eyeTexture.TextureSize;
eyeTexture.Viewport = new Viewport(0, 0, eyeTexture.TextureSize.Width, eyeTexture.TextureSize.Height, 0.0f, 1.0f);
// Define a texture at the size recommended for the eye texture.
eyeTexture.Texture2DDescription = new Texture2DDescription();
eyeTexture.Texture2DDescription.Width = eyeTexture.TextureSize.Width;
eyeTexture.Texture2DDescription.Height = eyeTexture.TextureSize.Height;
eyeTexture.Texture2DDescription.ArraySize = 1;
eyeTexture.Texture2DDescription.MipLevels = 1;
eyeTexture.Texture2DDescription.Format = Format.R8G8B8A8_UNorm;
eyeTexture.Texture2DDescription.SampleDescription = new SampleDescription(1, 0);
eyeTexture.Texture2DDescription.Usage = ResourceUsage.Default;
eyeTexture.Texture2DDescription.CpuAccessFlags = CpuAccessFlags.None;
eyeTexture.Texture2DDescription.BindFlags = BindFlags.ShaderResource | BindFlags.RenderTarget;
// Convert the SharpDX texture description to the Oculus texture swap chain description.
TextureSwapChainDesc textureSwapChainDesc = SharpDXHelpers.CreateTextureSwapChainDescription(eyeTexture.Texture2DDescription);
// Create a texture swap chain, which will contain the textures to render to, for the current eye.
IntPtr textureSwapChainPtr;
result = OVR.CreateTextureSwapChainDX(sessionPtr, device.NativePointer, ref textureSwapChainDesc, out textureSwapChainPtr);
WriteErrorDetails(OVR, result, "Failed to create swap chain.");
eyeTexture.SwapTextureSet = new TextureSwapChain(OVR, sessionPtr, textureSwapChainPtr);
// Retrieve the number of buffers of the created swap chain.
int textureSwapChainBufferCount;
result = eyeTexture.SwapTextureSet.GetLength(out textureSwapChainBufferCount);
WriteErrorDetails(OVR, result, "Failed to retrieve the number of buffers of the created swap chain.");
// Create room for each DirectX texture in the SwapTextureSet.
eyeTexture.Textures = new Texture2D[textureSwapChainBufferCount];
eyeTexture.RenderTargetViews = new RenderTargetView[textureSwapChainBufferCount];
// Create a texture 2D and a render target view, for each unmanaged texture contained in the SwapTextureSet.
for (int textureIndex = 0; textureIndex < textureSwapChainBufferCount; textureIndex++)
{
// Retrieve the Direct3D texture contained in the Oculus TextureSwapChainBuffer.
IntPtr swapChainTextureComPtr = IntPtr.Zero;
result = eyeTexture.SwapTextureSet.GetBufferDX(textureIndex, textureInterfaceId, out swapChainTextureComPtr);
WriteErrorDetails(OVR, result, "Failed to retrieve a texture from the created swap chain.");
// Create a managed Texture2D, based on the unmanaged texture pointer.
eyeTexture.Textures[textureIndex] = new Texture2D(swapChainTextureComPtr);
// Create a render target view for the current Texture2D.
eyeTexture.RenderTargetViews[textureIndex] = new RenderTargetView(device, eyeTexture.Textures[textureIndex]);
}
// Define the depth buffer, at the size recommended for the eye texture.
eyeTexture.DepthBufferDescription = new Texture2DDescription();
eyeTexture.DepthBufferDescription.Format = Format.D32_Float;
eyeTexture.DepthBufferDescription.Width = eyeTexture.TextureSize.Width;
eyeTexture.DepthBufferDescription.Height = eyeTexture.TextureSize.Height;
eyeTexture.DepthBufferDescription.ArraySize = 1;
eyeTexture.DepthBufferDescription.MipLevels = 1;
eyeTexture.DepthBufferDescription.SampleDescription = new SampleDescription(1, 0);
eyeTexture.DepthBufferDescription.Usage = ResourceUsage.Default;
eyeTexture.DepthBufferDescription.BindFlags = BindFlags.DepthStencil;
eyeTexture.DepthBufferDescription.CpuAccessFlags = CpuAccessFlags.None;
eyeTexture.DepthBufferDescription.OptionFlags = ResourceOptionFlags.None;
// Create the depth buffer.
eyeTexture.DepthBuffer = new Texture2D(device, eyeTexture.DepthBufferDescription);
eyeTexture.DepthStencilView = new DepthStencilView(device, eyeTexture.DepthBuffer);
// Specify the texture to show on the HMD.
if (eyeIndex == 0)
{
layerEyeFov.ColorTextureLeft = eyeTexture.SwapTextureSet.TextureSwapChainPtr;
layerEyeFov.ViewportLeft.Position = new Vector2i(0, 0);
layerEyeFov.ViewportLeft.Size = eyeTexture.TextureSize;
layerEyeFov.FovLeft = eyeTexture.FieldOfView;
}
else
{
layerEyeFov.ColorTextureRight = eyeTexture.SwapTextureSet.TextureSwapChainPtr;
layerEyeFov.ViewportRight.Position = new Vector2i(0, 0);
layerEyeFov.ViewportRight.Size = eyeTexture.TextureSize;
layerEyeFov.FovRight = eyeTexture.FieldOfView;
}
}
MirrorTextureDesc mirrorTextureDescription = new MirrorTextureDesc();
mirrorTextureDescription.Format = TextureFormat.R8G8B8A8_UNorm_SRgb;
mirrorTextureDescription.Width = form.Width;
mirrorTextureDescription.Height = form.Height;
mirrorTextureDescription.MiscFlags = TextureMiscFlags.None;
// Create the texture used to display the rendered result on the computer monitor.
IntPtr mirrorTexturePtr;
result = OVR.CreateMirrorTextureDX(sessionPtr, device.NativePointer, ref mirrorTextureDescription, out mirrorTexturePtr);
WriteErrorDetails(OVR, result, "Failed to create mirror texture.");
mirrorTexture = new MirrorTexture(OVR, sessionPtr, mirrorTexturePtr);
// Retrieve the Direct3D texture contained in the Oculus MirrorTexture.
IntPtr mirrorTextureComPtr = IntPtr.Zero;
result = mirrorTexture.GetBufferDX(textureInterfaceId, out mirrorTextureComPtr);
WriteErrorDetails(OVR, result, "Failed to retrieve the texture from the created mirror texture buffer.");
// Create a managed Texture2D, based on the unmanaged texture pointer.
mirrorTextureD3D = new Texture2D(mirrorTextureComPtr);
#region Vertex and pixel shader
// Create vertex shader.
vertexShaderByteCode = ShaderBytecode.CompileFromFile("Shaders.fx", "VertexShaderPositionColor", "vs_4_0");
vertexShader = new VertexShader(device, vertexShaderByteCode);
// Create pixel shader.
pixelShaderByteCode = ShaderBytecode.CompileFromFile("Shaders.fx", "PixelShaderPositionColor", "ps_4_0");
pixelShader = new PixelShader(device, pixelShaderByteCode);
shaderSignature = ShaderSignature.GetInputSignature(vertexShaderByteCode);
// Specify that each vertex consists of a single vertex position and color.
InputElement[] inputElements = new InputElement[]
{
new InputElement("POSITION", 0, Format.R32G32B32A32_Float, 0, 0),
new InputElement("COLOR", 0, Format.R32G32B32A32_Float, 16, 0)
};
// Define an input layout to be passed to the vertex shader.
inputLayout = new InputLayout(device, shaderSignature, inputElements);
// Create a vertex buffer, containing our 3D model.
vertexBuffer = Buffer.Create(device, BindFlags.VertexBuffer, m_vertices);
// Create a constant buffer, to contain our WorldViewProjection matrix, that will be passed to the vertex shader.
contantBuffer = new Buffer(device, Utilities.SizeOf <Matrix>(), ResourceUsage.Default, BindFlags.ConstantBuffer, CpuAccessFlags.None, ResourceOptionFlags.None, 0);
// Setup the immediate context to use the shaders and model we defined.
immediateContext.InputAssembler.InputLayout = inputLayout;
immediateContext.InputAssembler.PrimitiveTopology = PrimitiveTopology.TriangleList;
immediateContext.InputAssembler.SetVertexBuffers(0, new VertexBufferBinding(vertexBuffer, sizeof(float) * 4 * 2, 0));
immediateContext.VertexShader.SetConstantBuffer(0, contantBuffer);
immediateContext.VertexShader.Set(vertexShader);
immediateContext.PixelShader.Set(pixelShader);
#endregion
DateTime startTime = DateTime.Now;
Vector3 position = new Vector3(0, 0, -1);
#region Render loop
RenderLoop.Run(form, () =>
{
Vector3f[] hmdToEyeViewOffsets = { eyeTextures[0].HmdToEyeViewOffset, eyeTextures[1].HmdToEyeViewOffset };
double displayMidpoint = OVR.GetPredictedDisplayTime(sessionPtr, 0);
TrackingState trackingState = OVR.GetTrackingState(sessionPtr, displayMidpoint, true);
Posef[] eyePoses = new Posef[2];
// Calculate the position and orientation of each eye.
OVR.CalcEyePoses(trackingState.HeadPose.ThePose, hmdToEyeViewOffsets, ref eyePoses);
float timeSinceStart = (float)(DateTime.Now - startTime).TotalSeconds;
for (int eyeIndex = 0; eyeIndex < 2; eyeIndex++)
{
EyeType eye = (EyeType)eyeIndex;
EyeTexture eyeTexture = eyeTextures[eyeIndex];
if (eyeIndex == 0)
{
layerEyeFov.RenderPoseLeft = eyePoses[0];
}
else
{
layerEyeFov.RenderPoseRight = eyePoses[1];
}
// Update the render description at each frame, as the HmdToEyeOffset can change at runtime.
eyeTexture.RenderDescription = OVR.GetRenderDesc(sessionPtr, eye, hmdDesc.DefaultEyeFov[eyeIndex]);
// Retrieve the index of the active texture
int textureIndex;
result = eyeTexture.SwapTextureSet.GetCurrentIndex(out textureIndex);
WriteErrorDetails(OVR, result, "Failed to retrieve texture swap chain current index.");
immediateContext.OutputMerger.SetRenderTargets(eyeTexture.DepthStencilView, eyeTexture.RenderTargetViews[textureIndex]);
immediateContext.ClearRenderTargetView(eyeTexture.RenderTargetViews[textureIndex], Color.Black);
immediateContext.ClearDepthStencilView(eyeTexture.DepthStencilView, DepthStencilClearFlags.Depth | DepthStencilClearFlags.Stencil, 1.0f, 0);
immediateContext.Rasterizer.SetViewport(eyeTexture.Viewport);
// Retrieve the eye rotation quaternion and use it to calculate the LookAt direction and the LookUp direction.
Quaternion rotationQuaternion = SharpDXHelpers.ToQuaternion(eyePoses[eyeIndex].Orientation);
Matrix rotationMatrix = Matrix.RotationQuaternion(rotationQuaternion);
Vector3 lookUp = Vector3.Transform(new Vector3(0, -1, 0), rotationMatrix).ToVector3();
Vector3 lookAt = Vector3.Transform(new Vector3(0, 0, 1), rotationMatrix).ToVector3();
Vector3 viewPosition = position - eyePoses[eyeIndex].Position.ToVector3();
Matrix world = Matrix.Scaling(0.1f) * Matrix.RotationX(timeSinceStart / 10f) * Matrix.RotationY(timeSinceStart * 2 / 10f) * Matrix.RotationZ(timeSinceStart * 3 / 10f);
Matrix viewMatrix = Matrix.LookAtLH(viewPosition, viewPosition + lookAt, lookUp);
Matrix projectionMatrix = OVR.Matrix4f_Projection(eyeTexture.FieldOfView, 0.1f, 100.0f, ProjectionModifier.LeftHanded).ToMatrix();
projectionMatrix.Transpose();
Matrix worldViewProjection = world * viewMatrix * projectionMatrix;
worldViewProjection.Transpose();
// Update the transformation matrix.
immediateContext.UpdateSubresource(ref worldViewProjection, contantBuffer);
// Draw the cube
immediateContext.Draw(m_vertices.Length / 2, 0);
// Commits any pending changes to the TextureSwapChain, and advances its current index
result = eyeTexture.SwapTextureSet.Commit();
WriteErrorDetails(OVR, result, "Failed to commit the swap chain texture.");
}
result = OVR.SubmitFrame(sessionPtr, 0L, IntPtr.Zero, ref layerEyeFov);
WriteErrorDetails(OVR, result, "Failed to submit the frame of the current layers.");
immediateContext.CopyResource(mirrorTextureD3D, backBuffer);
swapChain.Present(0, PresentFlags.None);
});
#endregion
}
finally
{
if (immediateContext != null)
{
immediateContext.ClearState();
immediateContext.Flush();
}
// Release all resources
Dispose(inputLayout);
Dispose(contantBuffer);
Dispose(vertexBuffer);
Dispose(shaderSignature);
Dispose(pixelShader);
Dispose(pixelShaderByteCode);
Dispose(vertexShader);
Dispose(vertexShaderByteCode);
Dispose(mirrorTextureD3D);
Dispose(mirrorTexture);
Dispose(eyeTextures[0]);
Dispose(eyeTextures[1]);
Dispose(immediateContext);
Dispose(depthStencilState);
Dispose(depthStencilView);
Dispose(depthBuffer);
Dispose(backBufferRenderTargetView);
Dispose(backBuffer);
Dispose(swapChain);
Dispose(factory);
// Disposing the device, before the hmd, will cause the hmd to fail when disposing.
// Disposing the device, after the hmd, will cause the dispose of the device to fail.
// It looks as if the hmd steals ownership of the device and destroys it, when it's shutting down.
// device.Dispose();
OVR.Destroy(sessionPtr);
}
}
