1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/*=========================================================================
Program: Visualization Toolkit
Module: vtkOpenXRManagerD3DGraphics.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 "vtkOpenXRManagerD3DGraphics.h"
#include "vtkObjectFactory.h"
#include "vtkOpenXRManager.h"
#include "vtkWin32OpenGLDXRenderWindow.h"
#define XR_USE_GRAPHICS_API_D3D11
#include "d3d11.h" // Required headers for the XrGraphicsRequirementsD3D11KHR struct
#include <vtkOpenXRPlatform.h>
VTK_ABI_NAMESPACE_BEGIN
class vtkOpenXRManagerD3DGraphics::PIMPL
{
public:
// D3D swapchains
std::vector<SwapchainImagesD3D> ColorSwapchains;
std::vector<SwapchainImagesD3D> DepthSwapchains;
};
vtkStandardNewMacro(vtkOpenXRManagerD3DGraphics);
//------------------------------------------------------------------------------
vtkOpenXRManagerD3DGraphics::vtkOpenXRManagerD3DGraphics()
{
this->Private = new PIMPL;
}
//------------------------------------------------------------------------------
vtkOpenXRManagerD3DGraphics::~vtkOpenXRManagerD3DGraphics()
{
delete this->Private;
}
//------------------------------------------------------------------------------
void vtkOpenXRManagerD3DGraphics::SetNumberOfSwapchains(uint32_t viewCount)
{
this->Private->ColorSwapchains.resize(viewCount);
this->Private->DepthSwapchains.resize(viewCount);
}
//------------------------------------------------------------------------------
void vtkOpenXRManagerD3DGraphics::GetColorSwapchainImage(
uint32_t scIndex, uint32_t imgIndex, void* texture)
{
*(ID3D11Texture2D**)texture = this->Private->ColorSwapchains[scIndex].Images[imgIndex].texture;
}
//------------------------------------------------------------------------------
void vtkOpenXRManagerD3DGraphics::GetDepthSwapchainImage(
uint32_t scIndex, uint32_t imgIndex, void* texture)
{
*(ID3D11Texture2D**)texture = this->Private->DepthSwapchains[scIndex].Images[imgIndex].texture;
}
//------------------------------------------------------------------------------
void vtkOpenXRManagerD3DGraphics::EnumerateColorSwapchainImages(
XrSwapchain swapchain, uint32_t scIndex)
{
this->EnumerateSwapchainImages(swapchain, this->Private->ColorSwapchains[scIndex]);
}
//------------------------------------------------------------------------------
void vtkOpenXRManagerD3DGraphics::EnumerateDepthSwapchainImages(
XrSwapchain swapchain, uint32_t scIndex)
{
this->EnumerateSwapchainImages(swapchain, this->Private->DepthSwapchains[scIndex]);
}
//------------------------------------------------------------------------------
const std::vector<int64_t>& vtkOpenXRManagerD3DGraphics::GetSupportedColorFormats()
{
const static std::vector<int64_t> supportedColorFormats = { DXGI_FORMAT_R8G8B8A8_UNORM };
return supportedColorFormats;
}
//------------------------------------------------------------------------------
const std::vector<int64_t>& vtkOpenXRManagerD3DGraphics::GetSupportedDepthFormats()
{
const static std::vector<int64_t> supportedDepthFormats = { DXGI_FORMAT_D16_UNORM,
DXGI_FORMAT_D24_UNORM_S8_UINT, DXGI_FORMAT_D32_FLOAT, DXGI_FORMAT_D32_FLOAT_S8X24_UINT };
return supportedDepthFormats;
}
//------------------------------------------------------------------------------
void vtkOpenXRManagerD3DGraphics::EnumerateSwapchainImages(
XrSwapchain swapchain, SwapchainImagesD3D& swapchainImages)
{
uint32_t chainLength = this->GetChainLength(swapchain);
swapchainImages.Images.resize(chainLength, { XR_TYPE_SWAPCHAIN_IMAGE_D3D11_KHR });
vtkOpenXRManager::GetInstance().XrCheckError(
xrEnumerateSwapchainImages(swapchain, (uint32_t)swapchainImages.Images.size(), &chainLength,
reinterpret_cast<XrSwapchainImageBaseHeader*>(swapchainImages.Images.data())),
"Failed to enumerate swapchain images");
}
//------------------------------------------------------------------------------
bool vtkOpenXRManagerD3DGraphics::CreateGraphicsBinding(vtkOpenGLRenderWindow* helperWindow)
{
vtkWin32OpenGLDXRenderWindow* d3dWindow =
vtkWin32OpenGLDXRenderWindow::SafeDownCast(helperWindow);
if (d3dWindow)
{
auto graphicsBindingDXWin32 =
std::shared_ptr<XrGraphicsBindingD3D11KHR>(new XrGraphicsBindingD3D11KHR{
XR_TYPE_GRAPHICS_BINDING_D3D11_KHR, // .type
nullptr, // .next
{ 0 } // ID3D11Device* device
});
this->GraphicsBinding = graphicsBindingDXWin32;
graphicsBindingDXWin32->device = d3dWindow->GetDevice();
}
return true;
}
//------------------------------------------------------------------------------
bool vtkOpenXRManagerD3DGraphics::CheckGraphicsRequirements(XrInstance instance, XrSystemId id)
{
XrGraphicsRequirementsD3D11KHR graphicsRequirements{ XR_TYPE_GRAPHICS_REQUIREMENTS_D3D11_KHR };
xr::GraphicsExtensionDispatchTable extensions;
extensions.PopulateDispatchTable(instance);
if (!vtkOpenXRManager::GetInstance().XrCheckError(
extensions.xrGetD3D11GraphicsRequirementsKHR(instance, id, &graphicsRequirements),
"Failed to get DirectX graphics requirements!"))
{
return false;
}
// Create a list of feature levels which are both supported by the OpenXR runtime and this
// application. vtkWin32OpenGLDXRenderWindow only supports D3D11 for now.
constexpr D3D_FEATURE_LEVEL levels[] = { D3D_FEATURE_LEVEL_11_1 };
auto supportedLevel =
std::lower_bound(std::begin(levels), std::end(levels), graphicsRequirements.minFeatureLevel);
if (supportedLevel == std::end(levels))
{
vtkErrorMacro("Unsupported minimum feature level!");
return false;
};
return true;
}
//------------------------------------------------------------------------------
const char* vtkOpenXRManagerD3DGraphics::GetBackendExtensionName()
{
return XR_KHR_D3D11_ENABLE_EXTENSION_NAME;
}
VTK_ABI_NAMESPACE_END
|
