1// Copyright (C) 2017 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
3
4#include "drmeglserverbufferintegration.h"
5
6#include <QtOpenGL/QOpenGLTexture>
7#include <QtGui/QOpenGLContext>
8
9QT_BEGIN_NAMESPACE
10
11DrmEglServerBuffer::DrmEglServerBuffer(DrmEglServerBufferIntegration *integration, const QImage &qimage, QtWayland::ServerBuffer::Format format)
12 : QtWayland::ServerBuffer(qimage.size(),format)
13 , m_integration(integration)
14{
15 m_format = format;
16
17 EGLint egl_format;
18 switch (m_format) {
19 case RGBA32:
20 m_drm_format = QtWaylandServer::qt_drm_egl_server_buffer::format_RGBA32;
21 egl_format = EGL_DRM_BUFFER_FORMAT_ARGB32_MESA;
22 break;
23#ifdef EGL_DRM_BUFFER_FORMAT_A8_MESA
24 case A8:
25 m_drm_format = QtWaylandServer::qt_drm_egl_server_buffer::format_A8;
26 egl_format = EGL_DRM_BUFFER_FORMAT_A8_MESA;
27 break;
28#endif
29 default:
30 qWarning(msg: "DrmEglServerBuffer: unsupported format");
31 m_drm_format = QtWaylandServer::qt_drm_egl_server_buffer::format_RGBA32;
32 egl_format = EGL_DRM_BUFFER_FORMAT_ARGB32_MESA;
33 break;
34 }
35 EGLint imageAttribs[] = {
36 EGL_WIDTH, m_size.width(),
37 EGL_HEIGHT, m_size.height(),
38 EGL_DRM_BUFFER_FORMAT_MESA, egl_format,
39 EGL_DRM_BUFFER_USE_MESA, EGL_DRM_BUFFER_USE_SHARE_MESA,
40 EGL_NONE
41 };
42
43 m_image = m_integration->eglCreateDRMImageMESA(attrib_list: imageAttribs);
44
45 EGLint handle;
46 if (!m_integration->eglExportDRMImageMESA(image: m_image, name: &m_name, handle: &handle, stride: &m_stride)) {
47 qWarning(msg: "DrmEglServerBuffer: Failed to export egl image");
48 }
49
50 m_texture = new QOpenGLTexture(QOpenGLTexture::Target2D);
51 m_texture->create();
52 m_texture->bind();
53
54 m_integration->glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, image: m_image);
55
56 glTexSubImage2D(GL_TEXTURE_2D, level: 0, xoffset: 0, yoffset: 0, width: qimage.width(), height: qimage.height(), GL_RGBA, GL_UNSIGNED_BYTE, pixels: qimage.constBits());
57
58 m_texture->release();
59 m_texture->setSize(width: m_size.width(), height: m_size.height());
60}
61
62struct ::wl_resource *DrmEglServerBuffer::resourceForClient(struct ::wl_client *client)
63{
64 auto *bufferResource = resourceMap().value(client);
65 if (!bufferResource) {
66 auto integrationResource = m_integration->resourceMap().value(client);
67 if (!integrationResource) {
68 qWarning(msg: "DrmEglServerBuffer::resourceForClient: Trying to get resource for ServerBuffer. But client is not bound to the drm_egl interface");
69 return nullptr;
70 }
71 struct ::wl_resource *drm_egl_integration_resource = integrationResource->handle;
72 Resource *resource = add(client, 1);
73 m_integration->send_server_buffer_created(drm_egl_integration_resource, resource->handle, m_name, m_size.width(), m_size.height(), m_stride, m_drm_format);
74 return resource->handle;
75 }
76 return bufferResource->handle;
77}
78
79
80QOpenGLTexture *DrmEglServerBuffer::toOpenGlTexture()
81{
82 if (!m_texture) {
83 qWarning(msg: "DrmEglServerBuffer::toOpenGlTexture: no texture defined");
84 }
85 return m_texture;
86}
87
88bool DrmEglServerBuffer::bufferInUse()
89{
90 return resourceMap().size() > 0;
91}
92
93DrmEglServerBufferIntegration::DrmEglServerBufferIntegration()
94{
95}
96
97DrmEglServerBufferIntegration::~DrmEglServerBufferIntegration()
98{
99}
100
101bool DrmEglServerBufferIntegration::initializeHardware(QWaylandCompositor *compositor)
102{
103 Q_ASSERT(QGuiApplication::platformNativeInterface());
104
105 m_egl_display = static_cast<EGLDisplay>(QGuiApplication::platformNativeInterface()->nativeResourceForIntegration(resource: "egldisplay"));
106 if (!m_egl_display) {
107 qWarning(msg: "Can't initialize drm egl server buffer integration. Missing egl display from platform plugin");
108 return false;
109 }
110
111 const char *extensionString = eglQueryString(dpy: m_egl_display, EGL_EXTENSIONS);
112 if (!extensionString || !strstr(haystack: extensionString, needle: "EGL_KHR_image")) {
113 qWarning(msg: "Failed to initialize drm egl server buffer integration. There is no EGL_KHR_image extension.\n");
114 return false;
115 }
116 m_egl_create_image = reinterpret_cast<PFNEGLCREATEIMAGEKHRPROC>(eglGetProcAddress(procname: "eglCreateImageKHR"));
117 m_egl_destroy_image = reinterpret_cast<PFNEGLDESTROYIMAGEKHRPROC>(eglGetProcAddress(procname: "eglDestroyImageKHR"));
118 if (!m_egl_create_image || !m_egl_destroy_image) {
119 qWarning(msg: "Failed to initialize drm egl server buffer integration. Could not resolve eglCreateImageKHR or eglDestroyImageKHR");
120 return false;
121 }
122
123 if (!extensionString || !strstr(haystack: extensionString, needle: "EGL_MESA_drm_image")) {
124 qWarning(msg: "Failed to initialize drm egl server buffer integration. There is no EGL_MESA_drm_image extension.\n");
125 return false;
126 }
127
128 m_egl_create_drm_image = reinterpret_cast<PFNEGLCREATEDRMIMAGEMESAPROC>(eglGetProcAddress(procname: "eglCreateDRMImageMESA"));
129 m_egl_export_drm_image = reinterpret_cast<PFNEGLEXPORTDRMIMAGEMESAPROC>(eglGetProcAddress(procname: "eglExportDRMImageMESA"));
130 if (!m_egl_create_drm_image || !m_egl_export_drm_image) {
131 qWarning(msg: "Failed to initialize drm egl server buffer integration. Could not find eglCreateDRMImageMESA or eglExportDRMImageMESA.\n");
132 return false;
133 }
134
135 m_gl_egl_image_target_texture_2d = reinterpret_cast<PFNGLEGLIMAGETARGETTEXTURE2DOESPROC>(eglGetProcAddress(procname: "glEGLImageTargetTexture2DOES"));
136 if (!m_gl_egl_image_target_texture_2d) {
137 qWarning(msg: "Failed to initialize drm egl server buffer integration. Could not find glEGLImageTargetTexture2DOES.\n");
138 return false;
139 }
140
141 QtWaylandServer::qt_drm_egl_server_buffer::init(compositor->display(), 1);
142 return true;
143}
144
145bool DrmEglServerBufferIntegration::supportsFormat(QtWayland::ServerBuffer::Format format) const
146{
147 switch (format) {
148 case QtWayland::ServerBuffer::RGBA32:
149 return true;
150 case QtWayland::ServerBuffer::A8:
151#ifdef EGL_DRM_BUFFER_FORMAT_A8_MESA
152 return true;
153#else
154 return false;
155#endif
156 default:
157 return false;
158 }
159}
160
161QtWayland::ServerBuffer *DrmEglServerBufferIntegration::createServerBufferFromImage(const QImage &qimage, QtWayland::ServerBuffer::Format format)
162{
163 return new DrmEglServerBuffer(this, qimage, format);
164}
165
166QT_END_NAMESPACE
167

source code of qtwayland/src/hardwareintegration/compositor/drm-egl-server/drmeglserverbufferintegration.cpp