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/*=========================================================================
Program: Visualization Toolkit
Module: vtkOpenXRRemotingRenderWindow.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkOpenXRRemotingRenderWindow.h"
#include "vtkObjectFactory.h"
#include "vtkOpenGLFramebufferObject.h"
#include "vtkOpenXRManager.h"
#include "vtkOpenXRManagerD3DGraphics.h"
#include "vtkOpenXRManagerRemoteConnection.h"
#include "vtkTextureObject.h"
#include "vtkWin32OpenGLDXRenderWindow.h"
VTK_ABI_NAMESPACE_BEGIN
vtkStandardNewMacro(vtkOpenXRRemotingRenderWindow);
//------------------------------------------------------------------------------
vtkOpenXRRemotingRenderWindow::vtkOpenXRRemotingRenderWindow()
{
// Flip the texture before presenting to D3D which using a different convention
// for texture orientation.
this->FramebufferFlipY = true;
if (this->HelperWindow) // Clear previous window allocated by vtkVRRenderWindow
{
this->HelperWindow->Delete();
}
// Use an OpenGL-DX render window to allow streaming VTK rendering in a D3D texture.
this->HelperWindow = vtkWin32OpenGLDXRenderWindow::New();
// Use a D3D rendering backend in OpenXR
vtkNew<vtkOpenXRManagerD3DGraphics> D3Dgraphics;
vtkOpenXRManager::GetInstance().SetGraphicsStrategy(D3Dgraphics);
// Use the OpenXR remoting connection strategy
vtkNew<vtkOpenXRManagerRemoteConnection> remoteConnection;
vtkOpenXRManager::GetInstance().SetConnectionStrategy(remoteConnection);
}
//------------------------------------------------------------------------------
void vtkOpenXRRemotingRenderWindow::SetRemotingIPAddress(const char* host)
{
vtkOpenXRManager::GetInstance().GetConnectionStrategy()->SetIPAddress(host);
}
//------------------------------------------------------------------------------
void vtkOpenXRRemotingRenderWindow::Initialize()
{
if (this->Initialized)
{
return;
}
this->Superclass::Initialize();
// Set the sample count to the value recommended by the runtime
uint32_t samples = vtkOpenXRManager::GetInstance().GetRecommendedSampleCount();
this->HelperWindow->SetMultiSamples(samples);
vtkOpenGLRenderWindow::CreateFramebuffers(this->Size[0], this->Size[1]);
vtkWin32OpenGLDXRenderWindow* helperWindow =
vtkWin32OpenGLDXRenderWindow::SafeDownCast(this->HelperWindow);
// Register this window display framebuffer with the helper window D3D texture.
// We use the display buffer to benefit from FramebufferFlipY.
helperWindow->RegisterSharedTexture(
this->GetDisplayFramebuffer()->GetColorAttachmentAsTextureObject(0)->GetHandle());
// Resize shared texture
this->HelperWindow->SetSize(this->Size[0], this->Size[1]);
}
//------------------------------------------------------------------------------
void vtkOpenXRRemotingRenderWindow::CopyResultFrame()
{
vtkWin32OpenGLDXRenderWindow::SafeDownCast(this->HelperWindow)->Lock();
this->Superclass::CopyResultFrame();
vtkWin32OpenGLDXRenderWindow::SafeDownCast(this->HelperWindow)->Unlock();
}
//------------------------------------------------------------------------------
void vtkOpenXRRemotingRenderWindow::StereoUpdate()
{
// Lock the shared texture for rendering
vtkWin32OpenGLDXRenderWindow::SafeDownCast(this->HelperWindow)->Lock();
this->Superclass::StereoUpdate();
}
//------------------------------------------------------------------------------
void vtkOpenXRRemotingRenderWindow::StereoMidpoint()
{
this->RenderModels();
// Blit to DisplayFamebuffer with FramebufferFlipY enabled
this->Frame();
// RenderOneEye
this->Superclass::StereoMidpoint();
}
//------------------------------------------------------------------------------
void vtkOpenXRRemotingRenderWindow::StereoRenderComplete()
{
this->RenderModels();
// Blit to DisplayFamebuffer with FramebufferFlipY enabled
this->Frame();
// RenderOneEye
this->Superclass::StereoRenderComplete();
// Unlock the shared texture
vtkWin32OpenGLDXRenderWindow::SafeDownCast(this->HelperWindow)->Unlock();
}
//------------------------------------------------------------------------------
void vtkOpenXRRemotingRenderWindow::RenderOneEye(uint32_t eye)
{
ID3D11Texture2D* colorTexture = nullptr;
ID3D11Texture2D* depthTexture = nullptr;
if (!vtkOpenXRManager::GetInstance().PrepareRendering(eye, &colorTexture, &depthTexture))
{
return;
}
// D3D11 Rendering
vtkWin32OpenGLDXRenderWindow* helperWindow =
vtkWin32OpenGLDXRenderWindow::SafeDownCast(this->HelperWindow);
helperWindow->Unlock();
helperWindow->BlitToTexture(colorTexture);
helperWindow->Lock();
// Release this swapchain image
vtkOpenXRManager::GetInstance().ReleaseSwapchainImage(eye);
}
VTK_ABI_NAMESPACE_END
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