protected override void OnRenderFrame(FrameEventArgs e)
{
base.OnRenderFrame(e);
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
Vector3 camPos = new Vector3(0, 2, 5);
Quaternion camOri = Quaternion.Identity;
#if RENDER_OCULUS
for (int i = 0; i < 2; i++)
{
//zoom field of view
var fov = new FovPort
{
DownTan = eyes[i].desc.Fov.DownTan / zoomFactor,
UpTan = eyes[i].desc.Fov.UpTan / zoomFactor,
LeftTan = eyes[i].desc.Fov.LeftTan / zoomFactor,
RightTan = eyes[i].desc.Fov.RightTan / zoomFactor
};
eyes[i].proj = OvrDLL.ovrMatrix4f_Projection(fov, 0.1f, 1000.0f, ProjectionModifier.ClipRangeOpenGL);
//bind eye fbo
bindFbo(eyes[i]);
//combine the "camera" position/rotation with the position/rotation of the eye
Vector3 finalPos = camPos + (camOri * eyes[i].pose.Position);
Matrix4 finalRot = Matrix4.CreateFromQuaternion(camOri * eyes[i].pose.Orientation);
//create the view matrix with a lookat basis vectors
Vector3 up = eyes[i].pose.Orientation * Vector3.UnitY;
Vector3 fwd = eyes[i].pose.Orientation * -Vector3.UnitZ;
Matrix4 view = Matrix4.LookAt(finalPos, finalPos + fwd, up);
//draw the scene
drawScene(view, eyes[i].proj);
//commit the swapchain
OvrDLL.ovr_CommitTextureSwapChain(session, eyes[i].swapChain);
}
//send to Oculus
LayerEyeFov eyeFov = layers[0] as LayerEyeFov;
eyeFov.Header.Flags = LayerFlags.TextureOriginAtBottomLeft;
eyeFov.ColorTexture[0] = eyes[0].swapChain;
eyeFov.ColorTexture[1] = eyes[1].swapChain;
eyeFov.Fov[0] = eyes[0].desc.Fov;
eyeFov.Fov[1] = eyes[1].desc.Fov;
eyeFov.Viewport[0] = new Recti(new Vector2i(0,0), eyes[0].renderTargetSize);
eyeFov.Viewport[1] = new Recti(new Vector2i(0, 0), eyes[1].renderTargetSize);
eyeFov.RenderPose[0] = eyes[0].pose;
eyeFov.RenderPose[1] = eyes[1].pose;
ViewScaleDesc viewScale = new ViewScaleDesc();
result = OvrDLL.ovr_SubmitFrame(session, 0, ref viewScale, layers.GetUnmanagedLayers(), 1);
if (result < 0)
{
Console.WriteLine("Error submitting frame");
OvrDLL.ovr_GetLastErrorInfo(ref error);
Console.WriteLine("Last Error Info: {0}-{1}", error.result, error.ErrorString);
}
//blit mirror to fbo
OvrDLL.ovr_GetMirrorTextureBufferGL(session, mirror, ref myMirrorTexture);
blitMirror((int)myMirrorTexture);
#else
Matrix4 view = Matrix4.CreateTranslation(-camPos);
Matrix4 proj = Matrix4.CreatePerspectiveFieldOfView(MathHelper.DegreesToRadians(60.0f), 1.0f, 0.1f, 1000.0f);
drawScene(view, proj);
#endif
SwapBuffers();
}
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
initGLObjects();
GL.ClearColor(0.2f, 0.2f, 0.2f, 1.0f);
GL.Enable(EnableCap.CullFace);
GL.Enable(EnableCap.DepthTest);
GL.Enable(EnableCap.Blend);
//initialize the library
InitParams initParams = new InitParams()
{
Flags = InitFlags.None,
RequestedMinorVersion = Constants.OVR_MINOR_VERSION,
LogCallback = null,
UserData = IntPtr.Zero,
ConnectionTimeoutMS = 0
};
result = OvrDLL.ovr_Initialize(ref initParams);
if (result < 0)
{
Console.WriteLine("Failed to initialize OVR");
}
//create the session
result = OvrDLL.ovr_Create(ref session, ref luid);
if (result < 0)
{
Console.WriteLine("Failed to create OVR session");
}
//get device description and capabilities
hmdDesc = OvrDLL.ovr_GetHmdDesc(session);
Console.WriteLine("HMD Type: {0}", hmdDesc.Type);
Console.WriteLine("HMD Product Name: {0}", hmdDesc.ProductName);
Console.WriteLine("HMD Manufacturer: {0}", hmdDesc.Manufacturer);
Console.WriteLine("HMD Serial Number: {0}", hmdDesc.SerialNumber);
Console.WriteLine("HMD Resolution {0}x{1}", hmdDesc.Resolution.Width, hmdDesc.Resolution.Height);
Console.WriteLine("Version String: {0}", OvrDLL.ovr_GetVersionString());
//get the eye descriptions
eyes[0].desc = OvrDLL.ovr_GetRenderDesc(session, EyeType.Left, hmdDesc.LeftDefaultEyeFov);
eyes[1].desc = OvrDLL.ovr_GetRenderDesc(session, EyeType.Right, hmdDesc.RightDefaultEyeFov);
//get the tracker (the first one) description and then recenter it
TrackerDesc trackDesc = OvrDLL.ovr_GetTrackerDesc(session, 0);
Console.WriteLine("Tracker 0 description: FOV H: {0} V: {1} Near: {2} Far: {3}", trackDesc.FrustumHFovInRadians, trackDesc.FrustumVFovInRadians, trackDesc.FrustumNearZInMeters, trackDesc.FrustumFarZInMeters);
OvrDLL.ovr_RecenterTrackingOrigin(session);
Console.WriteLine("Tracker origin recentered");
//create layers
layers.AddLayerEyeFov(); // in slot 0
//init each of the eye targets with swap chains/fbo/etc
for (int i = 0; i < 2; i++)
{
initEyeTarget((EyeType)i);
}
//create the mirror texture
MirrorTextureDesc mirrorDesc = new MirrorTextureDesc()
{
Format = TextureFormat.R8G8B8A8_UNORM_SRGB,
Width = 800,
Height = 600
};
result = OvrDLL.ovr_CreateMirrorTextureGL(session, ref mirrorDesc, ref mirror);
if (result < 0)
{
Console.WriteLine("Error creating mirror texture");
OvrDLL.ovr_GetLastErrorInfo(ref error);
Console.WriteLine("Last Error Info: {0}-{1}", error.result, error.ErrorString);
}
OvrDLL.ovr_GetMirrorTextureBufferGL(session, mirror, ref myMirrorTexture);
Console.WriteLine("OpenGL Mirror texture ID: {0}", myMirrorTexture);
}
