1// Copyright (C) 2019 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#include "vulkanserverbufferintegration.h"
5#include <QtWaylandClient/private/qwaylanddisplay_p.h>
6#include <QDebug>
7#include <QtOpenGL/QOpenGLTexture>
8#include <QtGui/QOpenGLContext>
9#include <QtGui/qopengl.h>
10#include <QtGui/QImage>
11#include <QtCore/QCoreApplication>
12
13QT_BEGIN_NAMESPACE
14
15namespace QtWaylandClient {
16
17static constexpr bool sbiExtraDebug =
18#ifdef VULKAN_SERVER_BUFFER_EXTRA_DEBUG
19 true;
20#else
21 false;
22#endif
23
24#define DECL_GL_FUNCTION(name, type) \
25 type name
26
27#define FIND_GL_FUNCTION(name, type) \
28 do { \
29 name = reinterpret_cast<type>(glContext->getProcAddress(#name)); \
30 if (!name) { \
31 qWarning() << "ERROR in GL proc lookup. Could not find " #name; \
32 return false; \
33 } \
34 } while (0)
35
36struct VulkanServerBufferGlFunctions
37{
38 DECL_GL_FUNCTION(glCreateMemoryObjectsEXT, PFNGLCREATEMEMORYOBJECTSEXTPROC);
39 DECL_GL_FUNCTION(glImportMemoryFdEXT, PFNGLIMPORTMEMORYFDEXTPROC);
40 DECL_GL_FUNCTION(glTextureStorageMem2DEXT, PFNGLTEXTURESTORAGEMEM2DEXTPROC);
41 DECL_GL_FUNCTION(glTexStorageMem2DEXT, PFNGLTEXSTORAGEMEM2DEXTPROC);
42 DECL_GL_FUNCTION(glDeleteMemoryObjectsEXT, PFNGLDELETEMEMORYOBJECTSEXTPROC);
43
44 bool init(QOpenGLContext *glContext)
45 {
46 FIND_GL_FUNCTION(glCreateMemoryObjectsEXT, PFNGLCREATEMEMORYOBJECTSEXTPROC);
47 FIND_GL_FUNCTION(glImportMemoryFdEXT, PFNGLIMPORTMEMORYFDEXTPROC);
48 FIND_GL_FUNCTION(glTextureStorageMem2DEXT, PFNGLTEXTURESTORAGEMEM2DEXTPROC);
49 FIND_GL_FUNCTION(glTexStorageMem2DEXT, PFNGLTEXSTORAGEMEM2DEXTPROC);
50 FIND_GL_FUNCTION(glDeleteMemoryObjectsEXT, PFNGLDELETEMEMORYOBJECTSEXTPROC);
51
52 return true;
53 }
54 static bool create(QOpenGLContext *glContext);
55};
56
57static VulkanServerBufferGlFunctions *funcs = nullptr;
58
59bool VulkanServerBufferGlFunctions::create(QOpenGLContext *glContext)
60{
61 if (funcs)
62 return true;
63 funcs = new VulkanServerBufferGlFunctions;
64 if (!funcs->init(glContext)) {
65 delete funcs;
66 funcs = nullptr;
67 return false;
68 }
69 return true;
70}
71
72VulkanServerBuffer::VulkanServerBuffer(VulkanServerBufferIntegration *integration, struct ::qt_server_buffer *id,
73 int32_t fd, uint32_t width, uint32_t height, uint32_t memory_size, uint32_t format)
74 : m_integration(integration)
75 , m_server_buffer(id)
76 , m_fd(fd)
77 , m_memorySize(memory_size)
78 , m_internalFormat(format)
79{
80 m_size = QSize(width, height);
81}
82
83VulkanServerBuffer::~VulkanServerBuffer()
84{
85 if (QCoreApplication::closingDown())
86 return; // can't trust anything at this point
87
88 if (m_texture) { //only do gl cleanup if import has been called
89 m_integration->deleteGLTextureWhenPossible(texture: m_texture);
90
91 if (sbiExtraDebug) qDebug() << "glDeleteMemoryObjectsEXT" << m_memoryObject;
92 funcs->glDeleteMemoryObjectsEXT(1, &m_memoryObject);
93 }
94 qt_server_buffer_release(m_server_buffer);
95 qt_server_buffer_destroy(m_server_buffer);
96}
97
98void VulkanServerBuffer::import()
99{
100 if (m_texture)
101 return;
102
103 if (sbiExtraDebug) qDebug() << "importing" << m_fd << Qt::hex << glGetError();
104
105 auto *glContext = QOpenGLContext::currentContext();
106 if (!glContext)
107 return;
108
109 if (!funcs && !VulkanServerBufferGlFunctions::create(glContext))
110 return;
111
112 funcs->glCreateMemoryObjectsEXT(1, &m_memoryObject);
113 if (sbiExtraDebug) qDebug() << "glCreateMemoryObjectsEXT" << Qt::hex << glGetError();
114 funcs->glImportMemoryFdEXT(m_memoryObject, m_memorySize, GL_HANDLE_TYPE_OPAQUE_FD_EXT, m_fd);
115 if (sbiExtraDebug) qDebug() << "glImportMemoryFdEXT" << Qt::hex << glGetError();
116
117
118 m_texture = new QOpenGLTexture(QOpenGLTexture::Target2D);
119 m_texture->create();
120
121 if (sbiExtraDebug) qDebug() << "created texture" << m_texture->textureId() << Qt::hex << glGetError();
122
123 m_texture->bind();
124 if (sbiExtraDebug) qDebug() << "bound texture" << Qt::hex << glGetError();
125 funcs->glTexStorageMem2DEXT(GL_TEXTURE_2D, 1, m_internalFormat, m_size.width(), m_size.height(), m_memoryObject, 0 );
126 if (sbiExtraDebug) qDebug() << "glTexStorageMem2DEXT" << Qt::hex << glGetError();
127 if (sbiExtraDebug) qDebug() << "format" << Qt::hex << m_internalFormat << GL_RGBA8;
128}
129
130QOpenGLTexture *VulkanServerBuffer::toOpenGlTexture()
131{
132 m_integration->deleteOrphanedTextures();
133 if (!m_texture)
134 import();
135 return m_texture;
136}
137
138void VulkanServerBufferIntegration::initialize(QWaylandDisplay *display)
139{
140 m_display = display;
141 display->addRegistryListener(listener: &wlDisplayHandleGlobal, data: this);
142}
143
144QWaylandServerBuffer *VulkanServerBufferIntegration::serverBuffer(struct qt_server_buffer *buffer)
145{
146 return static_cast<QWaylandServerBuffer *>(qt_server_buffer_get_user_data(buffer));
147}
148
149void VulkanServerBufferIntegration::wlDisplayHandleGlobal(void *data, ::wl_registry *registry, uint32_t id, const QString &interface, uint32_t version)
150{
151 Q_UNUSED(version);
152 if (interface == "zqt_vulkan_server_buffer_v1") {
153 auto *integration = static_cast<VulkanServerBufferIntegration *>(data);
154 integration->QtWayland::zqt_vulkan_server_buffer_v1::init(registry, id, 1);
155 }
156}
157
158void VulkanServerBufferIntegration::zqt_vulkan_server_buffer_v1_server_buffer_created(qt_server_buffer *id, int32_t fd, uint32_t width, uint32_t height, uint32_t memory_size, uint32_t format)
159{
160 if (sbiExtraDebug) qDebug() << "vulkan_server_buffer_server_buffer_created" << fd;
161 auto *server_buffer = new VulkanServerBuffer(this, id, fd, width, height, memory_size, format);
162 qt_server_buffer_set_user_data(id, server_buffer);
163}
164
165void VulkanServerBufferIntegration::deleteOrphanedTextures()
166{
167 if (!QOpenGLContext::currentContext()) {
168 qWarning(msg: "VulkanServerBufferIntegration::deleteOrphanedTextures with no current context!");
169 return;
170 }
171 qDeleteAll(c: orphanedTextures);
172 orphanedTextures.clear();
173}
174
175}
176
177QT_END_NAMESPACE
178

source code of qtwayland/src/hardwareintegration/client/vulkan-server/vulkanserverbufferintegration.cpp