// Helper to create (or reuse if possible) each of our different overlay types.
ulong GetOverlayHandle(string overlayName, Transform transform, float widthInMeters = 1.0f)
{
ulong handle = OpenVR.k_ulOverlayHandleInvalid;
var overlay = OpenVR.Overlay;
if (overlay == null)
{
return(handle);
}
var key = SteamVR_Overlay.key + "." + overlayName;
var error = overlay.FindOverlay(key, ref handle);
if (error != EVROverlayError.None)
{
error = overlay.CreateOverlay(key, overlayName, ref handle);
}
if (error == EVROverlayError.None)
{
overlay.ShowOverlay(handle);
overlay.SetOverlayAlpha(handle, alpha);
overlay.SetOverlayWidthInMeters(handle, widthInMeters);
// D3D textures are upside-down in Unity to match OpenGL.
if (SteamVR.instance.textureType == ETextureType.DirectX)
{
var textureBounds = new VRTextureBounds_t();
textureBounds.uMin = 0;
textureBounds.vMin = 1;
textureBounds.uMax = 1;
textureBounds.vMax = 0;
overlay.SetOverlayTextureBounds(handle, ref textureBounds);
}
// Convert from world space to tracking space using the top-most camera.
var vrcam = (loadingScreenDistance == 0.0f) ? SteamVR_Render.Top() : null;
if (vrcam != null && vrcam.origin != null)
{
var offset = new SteamVR_Utils.RigidTransform(vrcam.origin, transform);
offset.pos.x /= vrcam.origin.localScale.x;
offset.pos.y /= vrcam.origin.localScale.y;
offset.pos.z /= vrcam.origin.localScale.z;
var t = offset.ToHmdMatrix34();
overlay.SetOverlayTransformAbsolute(handle, SteamVR.settings.trackingSpace, ref t);
}
else
{
var t = new SteamVR_Utils.RigidTransform(transform).ToHmdMatrix34();
overlay.SetOverlayTransformAbsolute(handle, SteamVR.settings.trackingSpace, ref t);
}
}
return(handle);
}
public void UpdateOverlay()
{
var overlay = OpenVR.Overlay;
if (overlay == null)
{
return;
}
if (texture != null)
{
var error = overlay.ShowOverlay(handle);
if (error == EVROverlayError.InvalidHandle || error == EVROverlayError.UnknownOverlay)
{
if (overlay.FindOverlay(key, ref handle) != EVROverlayError.None)
{
return;
}
}
var tex = new Texture_t();
tex.handle = texture.GetNativeTexturePtr();
tex.eType = SteamVR.instance.textureType;
tex.eColorSpace = EColorSpace.Auto;
overlay.SetOverlayTexture(handle, ref tex);
overlay.SetOverlayAlpha(handle, alpha);
overlay.SetOverlayWidthInMeters(handle, scale);
overlay.SetOverlayAutoCurveDistanceRangeInMeters(handle, curvedRange.x, curvedRange.y);
var textureBounds = new VRTextureBounds_t();
textureBounds.uMin = (0 + uvOffset.x) * uvOffset.z;
textureBounds.vMin = (1 + uvOffset.y) * uvOffset.w;
textureBounds.uMax = (1 + uvOffset.x) * uvOffset.z;
textureBounds.vMax = (0 + uvOffset.y) * uvOffset.w;
overlay.SetOverlayTextureBounds(handle, ref textureBounds);
var vecMouseScale = new HmdVector2_t();
vecMouseScale.v0 = mouseScale.x;
vecMouseScale.v1 = mouseScale.y;
overlay.SetOverlayMouseScale(handle, ref vecMouseScale);
var vrcam = SteamVR_Render.Top();
if (vrcam != null && vrcam.origin != null)
{
var offset = new SteamVR_Utils.RigidTransform(vrcam.origin, transform);
offset.pos.x /= vrcam.origin.localScale.x;
offset.pos.y /= vrcam.origin.localScale.y;
offset.pos.z /= vrcam.origin.localScale.z;
offset.pos.z += distance;
var t = offset.ToHmdMatrix34();
overlay.SetOverlayTransformAbsolute(handle, SteamVR.settings.trackingSpace, ref t);
}
overlay.SetOverlayInputMethod(handle, inputMethod);
if (curved || antialias)
{
highquality = true;
}
if (highquality)
{
overlay.SetHighQualityOverlay(handle);
overlay.SetOverlayFlag(handle, VROverlayFlags.Curved, curved);
overlay.SetOverlayFlag(handle, VROverlayFlags.RGSS4X, antialias);
}
else if (overlay.GetHighQualityOverlay() == handle)
{
overlay.SetHighQualityOverlay(OpenVR.k_ulOverlayHandleInvalid);
}
}
else
{
overlay.HideOverlay(handle);
}
}
