public void UpdateOverlay()
{
CVROverlay overlay = OpenVR.Overlay;
if (overlay == null)
{
return;
}
if (this.texture != null)
{
EVROverlayError evroverlayError = overlay.ShowOverlay(this.handle);
if ((evroverlayError == EVROverlayError.InvalidHandle || evroverlayError == EVROverlayError.UnknownOverlay) && overlay.FindOverlay(SteamVR_Overlay.key, ref this.handle) != EVROverlayError.None)
{
return;
}
Texture_t texture_t = default(Texture_t);
texture_t.handle = this.texture.GetNativeTexturePtr();
texture_t.eType = SteamVR.instance.textureType;
texture_t.eColorSpace = EColorSpace.Auto;
overlay.SetOverlayTexture(this.handle, ref texture_t);
overlay.SetOverlayAlpha(this.handle, this.alpha);
overlay.SetOverlayWidthInMeters(this.handle, this.scale);
overlay.SetOverlayAutoCurveDistanceRangeInMeters(this.handle, this.curvedRange.x, this.curvedRange.y);
VRTextureBounds_t vrtextureBounds_t = default(VRTextureBounds_t);
vrtextureBounds_t.uMin = this.uvOffset.x * this.uvOffset.z;
vrtextureBounds_t.vMin = (1f + this.uvOffset.y) * this.uvOffset.w;
vrtextureBounds_t.uMax = (1f + this.uvOffset.x) * this.uvOffset.z;
vrtextureBounds_t.vMax = this.uvOffset.y * this.uvOffset.w;
overlay.SetOverlayTextureBounds(this.handle, ref vrtextureBounds_t);
HmdVector2_t hmdVector2_t = default(HmdVector2_t);
hmdVector2_t.v0 = this.mouseScale.x;
hmdVector2_t.v1 = this.mouseScale.y;
overlay.SetOverlayMouseScale(this.handle, ref hmdVector2_t);
SteamVR_Camera steamVR_Camera = SteamVR_Render.Top();
if (steamVR_Camera != null && steamVR_Camera.origin != null)
{
SteamVR_Utils.RigidTransform rigidTransform = new SteamVR_Utils.RigidTransform(steamVR_Camera.origin, base.transform);
rigidTransform.pos.x = rigidTransform.pos.x / steamVR_Camera.origin.localScale.x;
rigidTransform.pos.y = rigidTransform.pos.y / steamVR_Camera.origin.localScale.y;
rigidTransform.pos.z = rigidTransform.pos.z / steamVR_Camera.origin.localScale.z;
rigidTransform.pos.z = rigidTransform.pos.z + this.distance;
HmdMatrix34_t hmdMatrix34_t = rigidTransform.ToHmdMatrix34();
overlay.SetOverlayTransformAbsolute(this.handle, SteamVR_Render.instance.trackingSpace, ref hmdMatrix34_t);
}
overlay.SetOverlayInputMethod(this.handle, this.inputMethod);
if (this.curved || this.antialias)
{
this.highquality = true;
}
if (this.highquality)
{
overlay.SetHighQualityOverlay(this.handle);
overlay.SetOverlayFlag(this.handle, VROverlayFlags.Curved, this.curved);
overlay.SetOverlayFlag(this.handle, VROverlayFlags.RGSS4X, this.antialias);
}
else if (overlay.GetHighQualityOverlay() == this.handle)
{
overlay.SetHighQualityOverlay(0UL);
}
}
else
{
overlay.HideOverlay(this.handle);
}
}