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
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
// Copyright (C) 2024 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qdxgihdrinfo_p.h"
#include <QtCore/private/qsystemerror_p.h>
QT_BEGIN_NAMESPACE
QDxgiHdrInfo::QDxgiHdrInfo()
{
HRESULT hr = CreateDXGIFactory2(0, __uuidof(IDXGIFactory2), reinterpret_cast<void **>(&m_factory));
if (FAILED(hr)) {
qWarning("QDxgiHdrInfo: CreateDXGIFactory2 failed: %s", qPrintable(QSystemError::windowsComString(hr)));
return;
}
// Create the factory but leave m_adapter set to null, indicating that all
// outputs of all adapters should be enumerated (if this is a good idea, not
// sure, but there is no choice here, when someone wants to use this outside
// of QRhi's scope and control)
}
QDxgiHdrInfo::QDxgiHdrInfo(LUID luid)
{
HRESULT hr = CreateDXGIFactory2(0, __uuidof(IDXGIFactory2), reinterpret_cast<void **>(&m_factory));
if (FAILED(hr)) {
qWarning("QDxgiHdrInfo: CreateDXGIFactory2 failed: %s", qPrintable(QSystemError::windowsComString(hr)));
return;
}
IDXGIAdapter1 *ad;
for (int adapterIndex = 0; m_factory->EnumAdapters1(UINT(adapterIndex), &ad) != DXGI_ERROR_NOT_FOUND; ++adapterIndex) {
DXGI_ADAPTER_DESC1 desc;
ad->GetDesc1(&desc);
if (desc.AdapterLuid.LowPart == luid.LowPart && desc.AdapterLuid.HighPart == luid.HighPart) {
m_adapter = ad;
break;
}
ad->Release();
}
if (!m_adapter)
qWarning("QDxgiHdrInfo: No adapter found");
}
QDxgiHdrInfo::QDxgiHdrInfo(IDXGIAdapter1 *adapter)
: m_adapter(adapter)
{
m_adapter->AddRef(); // so that the dtor does not destroy it
}
QDxgiHdrInfo::~QDxgiHdrInfo()
{
if (m_adapter)
m_adapter->Release();
if (m_factory)
m_factory->Release();
}
bool QDxgiHdrInfo::isHdrCapable(QWindow *w)
{
if (!m_adapter && m_factory) {
IDXGIAdapter1 *adapter;
for (int adapterIndex = 0; m_factory->EnumAdapters1(UINT(adapterIndex), &adapter) != DXGI_ERROR_NOT_FOUND; ++adapterIndex) {
DXGI_OUTPUT_DESC1 desc1;
const bool ok = outputDesc1ForWindow(w, adapter, &desc1) && desc1.ColorSpace == DXGI_COLOR_SPACE_RGB_FULL_G2084_NONE_P2020;
adapter->Release();
if (ok)
return true;
}
} else if (m_adapter) {
DXGI_OUTPUT_DESC1 desc1;
if (outputDesc1ForWindow(w, m_adapter, &desc1)) {
// as per https://learn.microsoft.com/en-us/windows/win32/direct3darticles/high-dynamic-range
if (desc1.ColorSpace == DXGI_COLOR_SPACE_RGB_FULL_G2084_NONE_P2020) {
// "HDR display with all Advanced Color capabilities"
return true;
}
}
}
return false;
}
QRhiSwapChainHdrInfo QDxgiHdrInfo::queryHdrInfo(QWindow *w)
{
QRhiSwapChainHdrInfo info;
info.limitsType = QRhiSwapChainHdrInfo::LuminanceInNits;
info.limits.luminanceInNits.minLuminance = 0.0f;
info.limits.luminanceInNits.maxLuminance = 1000.0f;
info.luminanceBehavior = QRhiSwapChainHdrInfo::SceneReferred;
info.sdrWhiteLevel = 200.0f;
DXGI_OUTPUT_DESC1 hdrOutputDesc;
bool ok = false;
if (!m_adapter && m_factory) {
IDXGIAdapter1 *adapter;
for (int adapterIndex = 0; m_factory->EnumAdapters1(UINT(adapterIndex), &adapter) != DXGI_ERROR_NOT_FOUND; ++adapterIndex) {
ok = outputDesc1ForWindow(w, adapter, &hdrOutputDesc);
adapter->Release();
if (ok)
break;
}
} else if (m_adapter) {
ok = outputDesc1ForWindow(w, m_adapter, &hdrOutputDesc);
}
if (ok) {
info.limitsType = QRhiSwapChainHdrInfo::LuminanceInNits;
info.limits.luminanceInNits.minLuminance = hdrOutputDesc.MinLuminance;
info.limits.luminanceInNits.maxLuminance = hdrOutputDesc.MaxLuminance;
info.luminanceBehavior = QRhiSwapChainHdrInfo::SceneReferred; // 1.0 = 80 nits
info.sdrWhiteLevel = sdrWhiteLevelInNits(hdrOutputDesc);
}
return info;
}
bool QDxgiHdrInfo::output6ForWindow(QWindow *w, IDXGIAdapter1 *adapter, IDXGIOutput6 **result)
{
if (!adapter)
return false;
bool ok = false;
QRect wr = w->geometry();
wr = QRect(wr.topLeft() * w->devicePixelRatio(), wr.size() * w->devicePixelRatio());
const QPoint center = wr.center();
IDXGIOutput *currentOutput = nullptr;
IDXGIOutput *output = nullptr;
for (UINT i = 0; adapter->EnumOutputs(i, &output) != DXGI_ERROR_NOT_FOUND; ++i) {
if (!output)
continue;
DXGI_OUTPUT_DESC desc;
output->GetDesc(&desc);
const RECT r = desc.DesktopCoordinates;
const QRect dr(QPoint(r.left, r.top), QPoint(r.right - 1, r.bottom - 1));
if (dr.contains(center)) {
currentOutput = output;
break;
} else {
output->Release();
}
}
if (currentOutput) {
ok = SUCCEEDED(currentOutput->QueryInterface(__uuidof(IDXGIOutput6), reinterpret_cast<void **>(result)));
currentOutput->Release();
}
return ok;
}
bool QDxgiHdrInfo::outputDesc1ForWindow(QWindow *w, IDXGIAdapter1 *adapter, DXGI_OUTPUT_DESC1 *result)
{
bool ok = false;
IDXGIOutput6 *out6 = nullptr;
if (output6ForWindow(w, adapter, &out6)) {
ok = SUCCEEDED(out6->GetDesc1(result));
out6->Release();
}
return ok;
}
float QDxgiHdrInfo::sdrWhiteLevelInNits(const DXGI_OUTPUT_DESC1 &outputDesc)
{
QVector<DISPLAYCONFIG_PATH_INFO> pathInfos;
uint32_t pathInfoCount, modeInfoCount;
LONG result;
do {
if (GetDisplayConfigBufferSizes(QDC_ONLY_ACTIVE_PATHS, &pathInfoCount, &modeInfoCount) == ERROR_SUCCESS) {
pathInfos.resize(pathInfoCount);
QVector<DISPLAYCONFIG_MODE_INFO> modeInfos(modeInfoCount);
result = QueryDisplayConfig(QDC_ONLY_ACTIVE_PATHS, &pathInfoCount, pathInfos.data(), &modeInfoCount, modeInfos.data(), nullptr);
} else {
return 200.0f;
}
} while (result == ERROR_INSUFFICIENT_BUFFER);
MONITORINFOEX monitorInfo = {};
monitorInfo.cbSize = sizeof(monitorInfo);
GetMonitorInfo(outputDesc.Monitor, &monitorInfo);
for (const DISPLAYCONFIG_PATH_INFO &info : pathInfos) {
DISPLAYCONFIG_SOURCE_DEVICE_NAME deviceName = {};
deviceName.header.type = DISPLAYCONFIG_DEVICE_INFO_GET_SOURCE_NAME;
deviceName.header.size = sizeof(deviceName);
deviceName.header.adapterId = info.sourceInfo.adapterId;
deviceName.header.id = info.sourceInfo.id;
if (DisplayConfigGetDeviceInfo(&deviceName.header) == ERROR_SUCCESS) {
if (!wcscmp(monitorInfo.szDevice, deviceName.viewGdiDeviceName)) {
DISPLAYCONFIG_SDR_WHITE_LEVEL whiteLevel = {};
whiteLevel.header.type = DISPLAYCONFIG_DEVICE_INFO_GET_SDR_WHITE_LEVEL;
whiteLevel.header.size = sizeof(DISPLAYCONFIG_SDR_WHITE_LEVEL);
whiteLevel.header.adapterId = info.targetInfo.adapterId;
whiteLevel.header.id = info.targetInfo.id;
if (DisplayConfigGetDeviceInfo(&whiteLevel.header) == ERROR_SUCCESS)
return whiteLevel.SDRWhiteLevel * 80 / 1000.0f;
}
}
}
return 200.0f;
}
QT_END_NAMESPACE
|
