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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "dmabufserverbufferintegration.h"
#include <QtWaylandClient/private/qwaylanddisplay_p.h>
#include <QDebug>
#include <QtOpenGL/QOpenGLTexture>
#include <QtGui/QOpenGLContext>
#include <EGL/egl.h>
#include <EGL/eglext.h>
QT_BEGIN_NAMESPACE
namespace QtWaylandClient {
DmaBufServerBuffer::DmaBufServerBuffer(DmaBufServerBufferIntegration *integration
, struct ::qt_server_buffer *id
, int32_t fd
, int32_t width
, int32_t height
, int32_t stride
, int32_t offset
, int32_t fourcc_format)
: m_integration(integration)
, m_server_buffer(id)
{
m_size = QSize(width, height);
EGLint import_attribs[] = {
EGL_WIDTH, width,
EGL_HEIGHT, height,
EGL_LINUX_DRM_FOURCC_EXT, fourcc_format,
EGL_DMA_BUF_PLANE0_FD_EXT, fd,
EGL_DMA_BUF_PLANE0_OFFSET_EXT, offset,
EGL_DMA_BUF_PLANE0_PITCH_EXT, stride,
EGL_NONE
};
m_image = integration->eglCreateImageKHR(
EGL_NO_CONTEXT,
EGL_LINUX_DMA_BUF_EXT,
(EGLClientBuffer)nullptr,
import_attribs);
int err = eglGetError();
qCDebug(lcQpaWayland) << "imported egl image" << m_image;
if (m_image == EGL_NO_IMAGE_KHR || err != EGL_SUCCESS)
qCWarning(lcQpaWayland) << "DmaBufServerBuffer error importing image. EGL error code" << Qt::hex << err;
qt_server_buffer_set_user_data(id, this);
}
DmaBufServerBuffer::~DmaBufServerBuffer()
{
int err = m_integration->eglDestroyImageKHR(m_image);
if (err != EGL_SUCCESS)
qCWarning(lcQpaWayland) << "~DmaBufServerBuffer error destroying image" << m_image << "error code " << Qt::hex << err;
qt_server_buffer_release(m_server_buffer);
qt_server_buffer_destroy(m_server_buffer);
}
QOpenGLTexture *DmaBufServerBuffer::toOpenGlTexture()
{
if (!QOpenGLContext::currentContext())
qCWarning(lcQpaWayland) <<"DmaBufServerBuffer: creating texture with no current context";
if (!m_texture) {
m_texture = new QOpenGLTexture(QOpenGLTexture::Target2D);
m_texture->create();
}
m_texture->bind();
m_integration->glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, m_image);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
m_texture->release();
m_texture->setSize(m_size.width(), m_size.height());
return m_texture;
}
void DmaBufServerBufferIntegration::initializeEgl()
{
if (m_egl_initialized)
return;
m_egl_initialized = true;
m_egl_display = eglGetDisplay((EGLNativeDisplayType) m_display->wl_display());
if (m_egl_display == EGL_NO_DISPLAY) {
qCWarning(lcQpaWayland) << "Failed to initialize drm egl server buffer integration. Could not get egl display from wl_display.";
return;
}
const char *extensionString = eglQueryString(m_egl_display, EGL_EXTENSIONS);
if (!extensionString || !strstr(extensionString, "EGL_KHR_image")) {
qCWarning(lcQpaWayland) << "Failed to initialize dmabuf server buffer integration. There is no EGL_KHR_image extension.\n";
return;
}
m_egl_create_image = reinterpret_cast<PFNEGLCREATEIMAGEKHRPROC>(eglGetProcAddress("eglCreateImageKHR"));
m_egl_destroy_image = reinterpret_cast<PFNEGLDESTROYIMAGEKHRPROC>(eglGetProcAddress("eglDestroyImageKHR"));
if (!m_egl_create_image || !m_egl_destroy_image) {
qCWarning(lcQpaWayland) << "Failed to initialize dmabuf server buffer integration. Could not resolve eglCreateImageKHR or eglDestroyImageKHR";
return;
}
m_gl_egl_image_target_texture = reinterpret_cast<PFNGLEGLIMAGETARGETTEXTURE2DOESPROC>(eglGetProcAddress("glEGLImageTargetTexture2DOES"));
if (!m_gl_egl_image_target_texture) {
qCWarning(lcQpaWayland) << "Failed to initialize dmabuf server buffer integration. Could not resolve glEGLImageTargetTexture2DOES";
return;
}
}
void DmaBufServerBufferIntegration::initialize(QWaylandDisplay *display)
{
m_display = display;
display->addRegistryListener(&wlDisplayHandleGlobal, this);
}
QWaylandServerBuffer *DmaBufServerBufferIntegration::serverBuffer(struct qt_server_buffer *buffer)
{
return static_cast<QWaylandServerBuffer *>(qt_server_buffer_get_user_data(buffer));
}
void DmaBufServerBufferIntegration::wlDisplayHandleGlobal(void *data, ::wl_registry *registry, uint32_t id, const QString &interface, uint32_t version)
{
Q_UNUSED(version);
if (interface == QStringLiteral("qt_dmabuf_server_buffer")) {
auto *integration = static_cast<DmaBufServerBufferIntegration *>(data);
integration->QtWayland::qt_dmabuf_server_buffer::init(registry, id, 1);
}
}
void DmaBufServerBufferIntegration::dmabuf_server_buffer_server_buffer_created(struct ::qt_server_buffer *id
, int32_t name
, int32_t width
, int32_t height
, int32_t stride
, int32_t offset
, int32_t format)
{
(void) new DmaBufServerBuffer(this, id, name, width, height, stride, offset, format);
}
}
QT_END_NAMESPACE
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