/// <summary>
/// Gets the FOV and resolution.
/// </summary>
public static void GetImageInfo(ref int resH, ref int resV, ref float fovH, ref float fovV)
{
// Always set to safe values :)
resH = 1280;
resV = 800;
fovH = fovV = 90.0f;
if (HMD == null || !SupportedPlatform)
{
return;
}
ovrHmdDesc desc = HMD.GetDesc();
ovrFovPort fov = desc.DefaultEyeFov[0];
fov.LeftTan = fov.RightTan = Mathf.Max(fov.LeftTan, fov.RightTan);
fov.UpTan = fov.DownTan = Mathf.Max(fov.UpTan, fov.DownTan);
// Configure Stereo settings. Default pixel density is 1.0f.
float desiredPixelDensity = 1.0f;
ovrSizei texSize = HMD.GetFovTextureSize(ovrEyeType.ovrEye_Left, fov, desiredPixelDensity);
resH = texSize.w;
resV = texSize.h;
fovH = 2f * Mathf.Rad2Deg * Mathf.Atan(fov.LeftTan);
fovV = 2f * Mathf.Rad2Deg * Mathf.Atan(fov.UpTan);
}
public override void Initialize(GraphicsDevice gd)
{
_gd = gd;
if (gd.GetVulkanInfo(out BackendInfoVulkan vkInfo))
{
IntPtr physicalDevice;
ovrResult result = ovr_GetSessionPhysicalDeviceVk(_session, _luid, vkInfo.Instance, &physicalDevice);
if (result != ovrResult.Success)
{
throw new VeldridException($"Failed to get Vulkan physical device.");
}
result = ovr_SetSynchonizationQueueVk(_session, vkInfo.GraphicsQueue);
if (result != ovrResult.Success)
{
throw new VeldridException($"Failed to set the Oculus session's Vulkan synchronization queue.");
}
}
_hmdDesc = ovr_GetHmdDesc(_session);
_deviceName = _hmdDesc.ProductName.ToString();
_eyeRenderViewport = new ovrRecti[2];
_eyeSwapchains = new OculusSwapchain[2];
for (int eye = 0; eye < 2; ++eye)
{
ovrSizei idealSize = ovr_GetFovTextureSize(
_session,
(ovrEyeType)eye,
_hmdDesc.DefaultEyeFov[eye],
1.0f);
_eyeSwapchains[eye] = new OculusSwapchain(
_gd,
_session,
idealSize.w, idealSize.h,
Util.GetSampleCount(_options.EyeFramebufferSampleCount),
createDepth: true);
_eyeRenderViewport[eye].Pos.X = 0;
_eyeRenderViewport[eye].Pos.Y = 0;
_eyeRenderViewport[eye].Size = idealSize;
}
}
/// <summary>
/// Get resolution of eye texture
/// </summary>
/// <param name="w">Width</param>
/// <param name="h">Height</param>
public static void GetResolutionEyeTexture(ref int w, ref int h)
{
if (HMD == null || !SupportedPlatform)
{
return;
}
ovrHmdDesc desc = HMD.GetDesc();
ovrFovPort[] eyeFov = new ovrFovPort[2];
eyeFov[0] = desc.DefaultEyeFov[0];
eyeFov[1] = desc.DefaultEyeFov[1];
ovrSizei recommenedTex0Size = HMD.GetFovTextureSize(ovrEyeType.ovrEye_Left, desc.DefaultEyeFov[0], 1.0f);
ovrSizei recommenedTex1Size = HMD.GetFovTextureSize(ovrEyeType.ovrEye_Left, desc.DefaultEyeFov[1], 1.0f);
w = recommenedTex0Size.w + recommenedTex1Size.w;
h = (recommenedTex0Size.h + recommenedTex1Size.h) / 2;
}
static void Main(string[] args)
{
Initialize();
IntPtr hmd = Create(0);
ovrHmdDesc desc = new ovrHmdDesc();
GetDesc(hmd, ref desc);
ovrSizei texture_size_left = GetFovTextureSize(hmd, ovrEyeType.ovrEye_Left, desc.DefaultEyeFov()[(int)ovrEyeType.ovrEye_Left], 1.0f);
ovrSizei texture_size_right = GetFovTextureSize(hmd, ovrEyeType.ovrEye_Right, desc.DefaultEyeFov()[(int)ovrEyeType.ovrEye_Right], 1.0f);
ovrSizei rt_size = new ovrSizei(texture_size_left.w + texture_size_right.w, (texture_size_left.h > texture_size_right.h) ? texture_size_left.h : texture_size_right.h);
// Initialize eye rendering information for ovrHmd_Configure.
// The viewport sizes are re-computed in case RenderTargetSize changed due to HW limitations.
ovrEyeDesc[] eyes = new ovrEyeDesc[2];
eyes[0].Eye = ovrEyeType.ovrEye_Left;
eyes[1].Eye = ovrEyeType.ovrEye_Right;
eyes[0].Fov = desc.DefaultEyeFov()[(int)ovrEyeType.ovrEye_Left];
eyes[1].Fov = desc.DefaultEyeFov()[(int)ovrEyeType.ovrEye_Right];
eyes[0].TextureSize = rt_size;
eyes[1].TextureSize = rt_size;
eyes[0].RenderViewport.Pos = new ovrVector2i(0, 0);
eyes[0].RenderViewport.Size = new ovrSizei(rt_size.w / 2, rt_size.h);
eyes[1].RenderViewport.Pos = new ovrVector2i((rt_size.w + 1) / 2, 0);
eyes[1].RenderViewport.Size = eyes[0].RenderViewport.Size;
ovrEyeRenderDesc[] renderDesc = new ovrEyeRenderDesc[2];
ovrD3D9ConfigData renderConfigData = new ovrD3D9ConfigData();
//real pointer (IDirect3DDevice9*) to device
renderConfigData.Device = (IntPtr)0;
renderConfigData.Header = new ovrRenderAPIConfigHeader
{
API = ovrRenderAPIType.ovrRenderAPI_D3D9,
Multisample = 1,
RTSize = new ovrSizei(desc.Resolution.w, desc.Resolution.h)
};
ovrD3D9Texture[] textures = new ovrD3D9Texture[2];
if (ConfigureRendering(hmd, ref renderConfigData, 0, ovrDistortionCaps.ovrDistortion_Chromatic | ovrDistortionCaps.ovrDistortion_TimeWarp, eyes, renderDesc))
{
StartSensor(hmd, ovrHmdCapBits.ovrHmdCap_Orientation | ovrHmdCapBits.ovrHmdCap_YawCorrection | ovrHmdCapBits.ovrHmdCap_LatencyTest, 0);
//while true
BeginFrame(hmd, 0);
for (int eyeIndex = 0; eyeIndex < (int)ovrEyeType.ovrEye_Count; eyeIndex++)
{
ovrEyeType eye = desc.EyeRenderOrder()[eyeIndex];
ovrPosef eyeRenderPose = BeginEyeRender(hmd, eye);
ovrSensorState sensor_state = GetSensorState(hmd, 0.0);
EndEyeRender(hmd, eye, eyeRenderPose, ref textures[eyeIndex]);
}
EndFrame(hmd);
//end while
StopSensor(hmd);
}
Shutdown();
}
