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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "qwlclientbuffer_p.h"
#if QT_CONFIG(opengl)
#include "hardware_integration/qwlclientbufferintegration_p.h"
#include <qpa/qplatformopenglcontext.h>
#include <QOpenGLTexture>
#endif
#include <QtCore/QDebug>
#include <QtWaylandCompositor/private/wayland-wayland-server-protocol.h>
#include "qwaylandsharedmemoryformathelper_p.h"
#include <QtWaylandCompositor/private/qwaylandcompositor_p.h>
QT_BEGIN_NAMESPACE
namespace QtWayland {
ClientBuffer::ClientBuffer(struct ::wl_resource *buffer)
: m_buffer(buffer)
{
}
ClientBuffer::~ClientBuffer()
{
if (m_buffer && m_committed && !m_destroyed)
sendRelease();
}
void ClientBuffer::sendRelease()
{
Q_ASSERT(m_buffer);
wl_buffer_send_release(m_buffer);
m_committed = false;
}
void ClientBuffer::setDestroyed()
{
m_destroyed = true;
m_committed = false;
m_buffer = nullptr;
if (!m_refCount.loadAcquire())
delete this;
}
void ClientBuffer::ref()
{
m_refCount.ref();
}
void ClientBuffer::deref()
{
if (!m_refCount.deref()) {
if (isCommitted() && m_buffer && !m_destroyed)
sendRelease();
if (m_destroyed)
delete this;
}
}
void ClientBuffer::setCommitted(QRegion &damage)
{
m_damage = damage;
m_committed = true;
m_textureDirty = true;
}
QWaylandBufferRef::BufferFormatEgl ClientBuffer::bufferFormatEgl() const
{
return QWaylandBufferRef::BufferFormatEgl_Null;
}
SharedMemoryBuffer::SharedMemoryBuffer(wl_resource *bufferResource)
: ClientBuffer(bufferResource)
{
}
QSize SharedMemoryBuffer::size() const
{
if (wl_shm_buffer *shmBuffer = wl_shm_buffer_get(m_buffer)) {
int width = wl_shm_buffer_get_width(shmBuffer);
int height = wl_shm_buffer_get_height(shmBuffer);
return QSize(width, height);
}
return QSize();
}
QWaylandSurface::Origin SharedMemoryBuffer::origin() const
{
return QWaylandSurface::OriginTopLeft;
}
static void shmBufferCleanup(void *data)
{
auto *pool = static_cast<struct wl_shm_pool *>(data);
wl_shm_pool_unref(pool);
}
QImage SharedMemoryBuffer::image() const
{
if (wl_shm_buffer *shmBuffer = wl_shm_buffer_get(m_buffer)) {
int width = wl_shm_buffer_get_width(shmBuffer);
int height = wl_shm_buffer_get_height(shmBuffer);
int bytesPerLine = wl_shm_buffer_get_stride(shmBuffer);
// TODO: try to avoid QImage::convertToFormat()
wl_shm_format shmFormat = wl_shm_format(wl_shm_buffer_get_format(shmBuffer));
QImage::Format format = QWaylandSharedMemoryFormatHelper::fromWaylandShmFormat(shmFormat);
auto *pool = wl_shm_buffer_ref_pool(shmBuffer);
uchar *data = static_cast<uchar *>(wl_shm_buffer_get_data(shmBuffer));
return QImage(data, width, height, bytesPerLine, format, &shmBufferCleanup, pool);
}
return QImage();
}
#if QT_CONFIG(opengl)
QOpenGLTexture *SharedMemoryBuffer::toOpenGlTexture(int plane)
{
Q_UNUSED(plane);
if (isSharedMemory()) {
if (!m_shmTexture) {
m_shmTexture = new QOpenGLTexture(QOpenGLTexture::Target2D);
m_shmTexture->create();
}
if (m_textureDirty) {
m_textureDirty = false;
m_shmTexture->bind();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
// TODO: partial texture upload
QImage image = this->image();
m_shmTexture->setSize(image.width(), image.height());
if (image.hasAlphaChannel()) {
m_shmTexture->setFormat(QOpenGLTexture::RGBAFormat);
if (image.format() != QImage::Format_RGBA8888)
image = image.convertToFormat(QImage::Format_RGBA8888);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, image.width(), image.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, image.constBits());
} else {
m_shmTexture->setFormat(QOpenGLTexture::RGBFormat);
if (image.format() != QImage::Format_RGBX8888)
image = image.convertToFormat(QImage::Format_RGBX8888);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, image.width(), image.height(), 0, GL_RGB, GL_UNSIGNED_BYTE, image.constBits());
}
//we can release the buffer after uploading, since we have a copy
if (isCommitted())
sendRelease();
}
return m_shmTexture;
}
return nullptr;
}
#endif
}
QT_END_NAMESPACE
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