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
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
|
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtWaylandCompositor module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** 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 "waylandeglclientbufferintegration.h"
#include <QtWaylandCompositor/QWaylandCompositor>
#include <qpa/qplatformnativeinterface.h>
#include <QtGui/QGuiApplication>
#include <QtGui/QOpenGLContext>
#include <qpa/qplatformscreen.h>
#include <QtGui/QWindow>
#include <QtCore/QPointer>
#include <QDebug>
#include <EGL/egl.h>
#include <EGL/eglext.h>
/* Needed for compatibility with Mesa older than 10.0. */
typedef EGLBoolean (EGLAPIENTRYP PFNEGLQUERYWAYLANDBUFFERWL_compat) (EGLDisplay dpy, struct wl_resource *buffer, EGLint attribute, EGLint *value);
#ifndef EGL_WL_bind_wayland_display
typedef EGLBoolean (EGLAPIENTRYP PFNEGLBINDWAYLANDDISPLAYWL) (EGLDisplay dpy, struct wl_display *display);
typedef EGLBoolean (EGLAPIENTRYP PFNEGLUNBINDWAYLANDDISPLAYWL) (EGLDisplay dpy, struct wl_display *display);
#endif
#ifndef EGL_KHR_image
typedef EGLImageKHR (EGLAPIENTRYP PFNEGLCREATEIMAGEKHRPROC) (EGLDisplay dpy, EGLContext ctx, EGLenum target, EGLClientBuffer buffer, const EGLint *attrib_list);
typedef EGLBoolean (EGLAPIENTRYP PFNEGLDESTROYIMAGEKHRPROC) (EGLDisplay dpy, EGLImageKHR image);
#endif
#ifndef GL_OES_EGL_image
typedef void (GL_APIENTRYP PFNGLEGLIMAGETARGETTEXTURE2DOESPROC) (GLenum target, GLeglImageOES image);
typedef void (GL_APIENTRYP PFNGLEGLIMAGETARGETRENDERBUFFERSTORAGEOESPROC) (GLenum target, GLeglImageOES image);
#endif
QT_BEGIN_NAMESPACE
class WaylandEglClientBufferIntegrationPrivate
{
public:
WaylandEglClientBufferIntegrationPrivate()
: egl_display(EGL_NO_DISPLAY)
, valid(false)
, display_bound(false)
, egl_bind_wayland_display(0)
, egl_unbind_wayland_display(0)
, egl_query_wayland_buffer(0)
, egl_create_image(0)
, egl_destroy_image(0)
, gl_egl_image_target_texture_2d(0)
{ }
EGLDisplay egl_display;
bool valid;
bool display_bound;
PFNEGLBINDWAYLANDDISPLAYWL egl_bind_wayland_display;
PFNEGLUNBINDWAYLANDDISPLAYWL egl_unbind_wayland_display;
PFNEGLQUERYWAYLANDBUFFERWL_compat egl_query_wayland_buffer;
PFNEGLCREATEIMAGEKHRPROC egl_create_image;
PFNEGLDESTROYIMAGEKHRPROC egl_destroy_image;
PFNGLEGLIMAGETARGETTEXTURE2DOESPROC gl_egl_image_target_texture_2d;
};
WaylandEglClientBufferIntegration::WaylandEglClientBufferIntegration()
: QtWayland::ClientBufferIntegration()
, d_ptr(new WaylandEglClientBufferIntegrationPrivate)
{
}
void WaylandEglClientBufferIntegration::initializeHardware(struct wl_display *display)
{
Q_D(WaylandEglClientBufferIntegration);
const bool ignoreBindDisplay = !qgetenv("QT_WAYLAND_IGNORE_BIND_DISPLAY").isEmpty();
QPlatformNativeInterface *nativeInterface = QGuiApplication::platformNativeInterface();
if (!nativeInterface) {
qWarning("QtCompositor: Failed to initialize EGL display. No native platform interface available.");
return;
}
d->egl_display = nativeInterface->nativeResourceForIntegration("EglDisplay");
if (!d->egl_display) {
qWarning("QtCompositor: Failed to initialize EGL display. Could not get EglDisplay for window.");
return;
}
const char *extensionString = eglQueryString(d->egl_display, EGL_EXTENSIONS);
if ((!extensionString || !strstr(extensionString, "EGL_WL_bind_wayland_display")) && !ignoreBindDisplay) {
qWarning("QtCompositor: Failed to initialize EGL display. There is no EGL_WL_bind_wayland_display extension.");
return;
}
d->egl_bind_wayland_display = reinterpret_cast<PFNEGLBINDWAYLANDDISPLAYWL>(eglGetProcAddress("eglBindWaylandDisplayWL"));
d->egl_unbind_wayland_display = reinterpret_cast<PFNEGLUNBINDWAYLANDDISPLAYWL>(eglGetProcAddress("eglUnbindWaylandDisplayWL"));
if ((!d->egl_bind_wayland_display || !d->egl_unbind_wayland_display) && !ignoreBindDisplay) {
qWarning("QtCompositor: Failed to initialize EGL display. Could not find eglBindWaylandDisplayWL and eglUnbindWaylandDisplayWL.");
return;
}
d->egl_query_wayland_buffer = reinterpret_cast<PFNEGLQUERYWAYLANDBUFFERWL_compat>(eglGetProcAddress("eglQueryWaylandBufferWL"));
if (!d->egl_query_wayland_buffer) {
qWarning("QtCompositor: Failed to initialize EGL display. Could not find eglQueryWaylandBufferWL.");
return;
}
d->egl_create_image = reinterpret_cast<PFNEGLCREATEIMAGEKHRPROC>(eglGetProcAddress("eglCreateImageKHR"));
d->egl_destroy_image = reinterpret_cast<PFNEGLDESTROYIMAGEKHRPROC>(eglGetProcAddress("eglDestroyImageKHR"));
if (!d->egl_create_image || !d->egl_destroy_image) {
qWarning("QtCompositor: Failed to initialize EGL display. Could not find eglCreateImageKHR and eglDestroyImageKHR.");
return;
}
d->gl_egl_image_target_texture_2d = reinterpret_cast<PFNGLEGLIMAGETARGETTEXTURE2DOESPROC>(eglGetProcAddress("glEGLImageTargetTexture2DOES"));
if (!d->gl_egl_image_target_texture_2d) {
qWarning("QtCompositor: Failed to initialize EGL display. Could not find glEGLImageTargetTexture2DOES.");
return;
}
if (d->egl_bind_wayland_display && d->egl_unbind_wayland_display) {
d->display_bound = d->egl_bind_wayland_display(d->egl_display, display);
if (!d->display_bound) {
if (!ignoreBindDisplay) {
qWarning("QtCompositor: Failed to initialize EGL display. Could not bind Wayland display.");
return;
} else {
qWarning("QtCompositor: Could not bind Wayland display. Ignoring.");
}
}
}
d->valid = true;
}
void WaylandEglClientBufferIntegration::bindTextureToBuffer(struct ::wl_resource *buffer)
{
Q_D(WaylandEglClientBufferIntegration);
if (!d->valid) {
qWarning("QtCompositor: bindTextureToBuffer() failed");
return;
}
EGLImageKHR image = d->egl_create_image(d->egl_display, EGL_NO_CONTEXT,
EGL_WAYLAND_BUFFER_WL,
buffer, NULL);
d->gl_egl_image_target_texture_2d(GL_TEXTURE_2D, image);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
d->egl_destroy_image(d->egl_display, image);
}
QWaylandSurface::Origin WaylandEglClientBufferIntegration::origin(struct ::wl_resource *buffer) const
{
#if defined(EGL_WAYLAND_Y_INVERTED_WL)
Q_D(const WaylandEglClientBufferIntegration);
EGLint isYInverted;
EGLBoolean ret;
ret = d->egl_query_wayland_buffer(d->egl_display, buffer, EGL_WAYLAND_Y_INVERTED_WL, &isYInverted);
// Yes, this looks strange, but the specification says that EGL_FALSE return
// value (not supported) should be treated the same as EGL_TRUE return value
// and EGL_TRUE in value.
if (ret == EGL_FALSE || isYInverted == EGL_TRUE)
return QWaylandSurface::OriginTopLeft;
return QWaylandSurface::OriginBottomLeft;
#endif
return QtWayland::ClientBufferIntegration::origin(buffer);
}
void *WaylandEglClientBufferIntegration::lockNativeBuffer(struct ::wl_resource *buffer) const
{
Q_D(const WaylandEglClientBufferIntegration);
EGLImageKHR image = d->egl_create_image(d->egl_display, EGL_NO_CONTEXT,
EGL_WAYLAND_BUFFER_WL,
buffer, NULL);
return image;
}
void WaylandEglClientBufferIntegration::unlockNativeBuffer(void *native_buffer) const
{
Q_D(const WaylandEglClientBufferIntegration);
EGLImageKHR image = static_cast<EGLImageKHR>(native_buffer);
d->egl_destroy_image(d->egl_display, image);
}
QSize WaylandEglClientBufferIntegration::bufferSize(struct ::wl_resource *buffer) const
{
Q_D(const WaylandEglClientBufferIntegration);
int width, height;
d->egl_query_wayland_buffer(d->egl_display, buffer, EGL_WIDTH, &width);
d->egl_query_wayland_buffer(d->egl_display, buffer, EGL_HEIGHT, &height);
return QSize(width, height);
}
QT_END_NAMESPACE
|
