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
|
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Quick CL module
**
** $QT_BEGIN_LICENSE:LGPL3$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qquickclcontext_p.h"
#include <QtGui/QOpenGLContext>
#include <QtGui/QOpenGLFunctions>
#include <QtCore/QLoggingCategory>
#include <qpa/qplatformnativeinterface.h>
QT_BEGIN_NAMESPACE
Q_LOGGING_CATEGORY(logCL, "qt.quickcl")
QQuickCLContext::QQuickCLContext()
: m_platform(0),
m_device(0),
m_context(0)
{
}
QQuickCLContext::~QQuickCLContext()
{
destroy();
}
bool QQuickCLContext::create()
{
destroy();
qCDebug(logCL, "Creating new OpenCL context");
QOpenGLContext *ctx = QOpenGLContext::currentContext();
if (!ctx) {
qWarning("Attempted CL-GL interop without a current OpenGL context");
return false;
}
QOpenGLFunctions *f = ctx->functions();
cl_uint n;
cl_int err = clGetPlatformIDs(0, 0, &n);
if (err != CL_SUCCESS) {
qWarning("Failed to get platform ID count (error %d)", err);
if (err == -1001) {
qWarning("Could not find OpenCL implementation. ICD missing?"
#ifdef Q_OS_LINUX
" Check /etc/OpenCL/vendors."
#endif
);
}
return false;
}
if (n == 0) {
qWarning("No OpenCL platform found");
return false;
}
QVector<cl_platform_id> platformIds;
platformIds.resize(n);
if (clGetPlatformIDs(n, platformIds.data(), 0) != CL_SUCCESS) {
qWarning("Failed to get platform IDs");
return false;
}
m_platform = platformIds[0];
const char *vendor = (const char *) f->glGetString(GL_VENDOR);
qCDebug(logCL, "GL_VENDOR: %s", vendor);
const bool isNV = vendor && strstr(vendor, "NVIDIA");
const bool isIntel = vendor && strstr(vendor, "Intel");
const bool isAMD = vendor && strstr(vendor, "ATI");
qCDebug(logCL, "Found %u OpenCL platforms:", n);
for (cl_uint i = 0; i < n; ++i) {
QByteArray name;
name.resize(1024);
clGetPlatformInfo(platformIds[i], CL_PLATFORM_NAME, name.size(), name.data(), 0);
qCDebug(logCL, "Platform %p: %s", platformIds[i], name.constData());
if (isNV && name.contains(QByteArrayLiteral("NVIDIA")))
m_platform = platformIds[i];
else if (isIntel && name.contains(QByteArrayLiteral("Intel")))
m_platform = platformIds[i];
else if (isAMD && name.contains(QByteArrayLiteral("AMD")))
m_platform = platformIds[i];
}
qCDebug(logCL, "Using platform %p", m_platform);
#if defined (Q_OS_OSX)
cl_context_properties contextProps[] = { CL_CONTEXT_PROPERTY_USE_CGL_SHAREGROUP_APPLE,
(cl_context_properties) CGLGetShareGroup(CGLGetCurrentContext()),
0 };
#elif defined(Q_OS_WIN)
if (QOpenGLContext::openGLModuleType() == QOpenGLContext::LibGLES) {
// We don't do D3D-CL interop.
qWarning("ANGLE is not supported");
return false;
}
cl_context_properties contextProps[] = { CL_CONTEXT_PLATFORM, (cl_context_properties) m_platform,
CL_GL_CONTEXT_KHR, (cl_context_properties) wglGetCurrentContext(),
CL_WGL_HDC_KHR, (cl_context_properties) wglGetCurrentDC(),
0 };
#elif defined(Q_OS_LINUX)
cl_context_properties contextProps[] = { CL_CONTEXT_PLATFORM, (cl_context_properties) m_platform,
CL_GL_CONTEXT_KHR, 0,
0, 0,
0 };
QPlatformNativeInterface *nativeIf = qGuiApp->platformNativeInterface();
void *dpy = nativeIf->nativeResourceForIntegration(QByteArrayLiteral("egldisplay")); // EGLDisplay
if (dpy) {
void *nativeContext = nativeIf->nativeResourceForContext("eglcontext", ctx);
if (!nativeContext)
qWarning("Failed to get the underlying EGL context from the current QOpenGLContext");
contextProps[3] = (cl_context_properties) nativeContext;
contextProps[4] = CL_EGL_DISPLAY_KHR;
contextProps[5] = (cl_context_properties) dpy;
} else {
dpy = nativeIf->nativeResourceForIntegration(QByteArrayLiteral("display")); // Display *
void *nativeContext = nativeIf->nativeResourceForContext("glxcontext", ctx);
if (!nativeContext)
qWarning("Failed to get the underlying GLX context from the current QOpenGLContext");
contextProps[3] = (cl_context_properties) nativeContext;
contextProps[4] = CL_GLX_DISPLAY_KHR;
contextProps[5] = (cl_context_properties) dpy;
}
#endif
m_context = clCreateContextFromType(contextProps, CL_DEVICE_TYPE_GPU, 0, 0, &err);
if (!m_context) {
qWarning("Failed to create OpenCL context: %d", err);
return false;
}
qCDebug(logCL, "Using context %p", m_context);
#if defined(Q_OS_OSX)
err = clGetGLContextInfoAPPLE(m_context, CGLGetCurrentContext(),
CL_CGL_DEVICE_FOR_CURRENT_VIRTUAL_SCREEN_APPLE,
sizeof(cl_device_id), &m_device, 0);
if (err != CL_SUCCESS) {
qWarning("Failed to get OpenCL device for current screen: %d", err);
destroy();
return false;
}
#else
clGetGLContextInfoKHR_fn getGLContextInfo = (clGetGLContextInfoKHR_fn) clGetExtensionFunctionAddress("clGetGLContextInfoKHR");
if (!getGLContextInfo || getGLContextInfo(contextProps, CL_CURRENT_DEVICE_FOR_GL_CONTEXT_KHR,
sizeof(cl_device_id), &m_device, 0) != CL_SUCCESS) {
err = clGetDeviceIDs(m_platform, CL_DEVICE_TYPE_GPU, 1, &m_device, 0);
if (err != CL_SUCCESS) {
qWarning("Failed to get OpenCL device: %d", err);
destroy();
return false;
}
}
#endif
qCDebug(logCL, "Using device %p", m_device);
return true;
}
void QQuickCLContext::destroy()
{
if (m_context) {
qCDebug(logCL, "Releasing OpenCL context %p", m_context);
clReleaseContext(m_context);
m_context = 0;
}
m_device = 0;
m_platform = 0;
}
QT_END_NAMESPACE
|
