void MainLoop()
{
Layer[0] = new VRLayer(Session);
// Make a duplicate of the left eye texture, and a place to save renderpose
ovrPosef extraRenderPose;
OculusTexture extraRenderTexture;
if (!extraRenderTexture.Init(Session, Layer[0]->pEyeRenderTexture[0]->SizeW, Layer[0]->pEyeRenderTexture[0]->SizeH))
return;
//Need to commit it at least once here, or its possible when going into '1'
//to have the SDK use it before any texture has been committed
extraRenderTexture.Commit();
while (HandleMessages())
{
// Keep a clock of what's happening
static int clock = 0;
++clock;
// Adjust speed, because we only want movement at certain junctures
float speed = 1;
if (DIRECTX.Key['1'])
{
if ((clock % 2) != 0) speed = 0;
else speed *= 2;
}
ActionFromInput(speed);
// Get Eye poses, but into a temporary buffer,
ovrPosef tempEyeRenderPose[2];
Layer[0]->GetEyePoses(tempEyeRenderPose);
// Now find out player yaw at this time
XMVECTOR playerOrientation = MainCam->Rot;
// And, we're going to store the player orientations from when we render
static XMVECTOR playerOrientationAtRender[2];
static XMVECTOR extraOrientationAtRender;
for (int eye = 0; eye < 2; ++eye)
{
if (DIRECTX.Key['1'])
{
// Don't do this eye
if ((clock & 1) != eye) continue;
// This situation, use the extra buffer, and we're done
if (((clock % 4) == 2) && (eye == 0))
{
extraRenderPose = tempEyeRenderPose[eye];
extraOrientationAtRender = playerOrientation;
auto rtv = extraRenderTexture.GetRTV();
Layer[0]->RenderSceneToEyeBuffer(MainCam, RoomScene, eye, rtv, &extraRenderPose);
extraRenderTexture.Commit();
continue;
}
}
// Otherwise, operate as usual
Layer[0]->EyeRenderPose[eye] = tempEyeRenderPose[eye];
playerOrientationAtRender[eye] = playerOrientation;
Layer[0]->RenderSceneToEyeBuffer(MainCam, RoomScene, eye);
}
// If this situation is true, then want to use left texture and pose
XMVECTOR diffQuat[2] = { XMQuaternionIdentity(), XMQuaternionIdentity() };
if ((DIRECTX.Key['1']) && (((clock % 4) == 0) || ((clock % 4) == 3)))
{
if (!DIRECTX.Key['2']) diffQuat[0] = XMQuaternionMultiply(XMQuaternionInverse(extraOrientationAtRender), playerOrientation);
if (!DIRECTX.Key['2']) diffQuat[1] = XMQuaternionMultiply(XMQuaternionInverse(playerOrientationAtRender[1]), playerOrientation);
Layer[0]->PrepareLayerHeader(&extraRenderTexture, &extraRenderPose, diffQuat);
}
else
{
if (!DIRECTX.Key['2']) diffQuat[0] = XMQuaternionMultiply(XMQuaternionInverse(playerOrientationAtRender[0]), playerOrientation);
if (!DIRECTX.Key['2']) diffQuat[1] = XMQuaternionMultiply(XMQuaternionInverse(playerOrientationAtRender[1]), playerOrientation);
Layer[0]->PrepareLayerHeader(0, 0, diffQuat);
}
DistortAndPresent(1);
}
}
Quaternion inverse() const
{
return Quaternion(XMQuaternionInverse(*this));
}
inline void XM_CALLCONV inverse(){
this->v = XMQuaternionInverse(this->v);
}
inline this_type XM_CALLCONV inversed() const
{
this_type ret;
ret.v = XMQuaternionInverse(this->v);
return ret;
}
Quaternion Quaternion::Invert(const Quaternion& q)
{
return Quaternion(XMQuaternionInverse(q.ToSIMD()));
}
