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// Copyright (C) 2016 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 "drmeglserverbufferintegration.h"
#include <QtWaylandClient/private/qwaylanddisplay_p.h>
#include <QDebug>
#include <QtOpenGL/QOpenGLTexture>
#include <QtGui/QOpenGLContext>
#include <EGL/egl.h>
QT_BEGIN_NAMESPACE
namespace QtWaylandClient {
DrmServerBuffer::DrmServerBuffer(DrmEglServerBufferIntegration *integration
, int32_t name
, int32_t width
, int32_t height
, int32_t stride
, int32_t format)
: m_integration(integration)
{
m_size = QSize(width, height);
EGLint egl_format;
int32_t format_stride;
switch (format) {
case QtWayland::qt_drm_egl_server_buffer::format_RGBA32:
m_format = QWaylandServerBuffer::RGBA32;
egl_format = EGL_DRM_BUFFER_FORMAT_ARGB32_MESA;
format_stride = stride / 4;
break;
#ifdef EGL_DRM_BUFFER_FORMAT_A8_MESA
case QtWayland::qt_drm_egl_server_buffer::format_A8:
m_format = QWaylandServerBuffer::A8;
egl_format = EGL_DRM_BUFFER_FORMAT_A8_MESA;
format_stride = stride;
break;
#endif
default:
qWarning("DrmServerBuffer: unknown format");
m_format = QWaylandServerBuffer::RGBA32;
egl_format = EGL_DRM_BUFFER_FORMAT_ARGB32_MESA;
format_stride = stride / 4;
break;
}
EGLint attribs[] = {
EGL_WIDTH, width,
EGL_HEIGHT, height,
EGL_DRM_BUFFER_STRIDE_MESA, format_stride,
EGL_DRM_BUFFER_FORMAT_MESA, egl_format,
EGL_NONE
};
qintptr name_pointer = name;
m_image = integration->eglCreateImageKHR(EGL_NO_CONTEXT, EGL_DRM_BUFFER_MESA, (EGLClientBuffer) name_pointer, attribs);
}
DrmServerBuffer::~DrmServerBuffer()
{
m_integration->eglDestroyImageKHR(m_image);
}
QOpenGLTexture *DrmServerBuffer::toOpenGlTexture()
{
if (!QOpenGLContext::currentContext())
qWarning("DrmServerBuffer: 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 DrmEglServerBufferIntegration::initializeEgl()
{
if (m_egl_initialized)
return;
m_egl_initialized = true;
#if QT_CONFIG(egl_extension_platform_wayland)
m_egl_display = eglGetPlatformDisplay(EGL_PLATFORM_WAYLAND_EXT, m_display->wl_display(), nullptr);
#else
m_egl_display = eglGetDisplay((EGLNativeDisplayType) m_display->wl_display());
#endif
if (m_egl_display == EGL_NO_DISPLAY) {
qWarning("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")) {
qWarning("Failed to initialize drm egl 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) {
qWarning("Failed to initialize drm egl 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) {
qWarning("Failed to initialize drm egl server buffer integration. Could not resolve glEGLImageTargetTexture2DOES");
return;
}
m_egl_initialized = true;
}
void DrmEglServerBufferIntegration::initialize(QWaylandDisplay *display)
{
m_display = display;
display->addRegistryListener(&wlDisplayHandleGlobal, this);
}
QWaylandServerBuffer *DrmEglServerBufferIntegration::serverBuffer(struct qt_server_buffer *buffer)
{
return static_cast<QWaylandServerBuffer *>(qt_server_buffer_get_user_data(buffer));
}
void DrmEglServerBufferIntegration::wlDisplayHandleGlobal(void *data, ::wl_registry *registry, uint32_t id, const QString &interface, uint32_t version)
{
Q_UNUSED(version);
if (interface == QStringLiteral("qt_drm_egl_server_buffer")) {
auto *integration = static_cast<DrmEglServerBufferIntegration *>(data);
integration->QtWayland::qt_drm_egl_server_buffer::init(registry, id, 1);
}
}
void DrmEglServerBufferIntegration::drm_egl_server_buffer_server_buffer_created(struct ::qt_server_buffer *id
, int32_t name
, int32_t width
, int32_t height
, int32_t stride
, int32_t format)
{
DrmServerBuffer *server_buffer = new DrmServerBuffer(this, name, width, height, stride, format);
qt_server_buffer_set_user_data(id, server_buffer);
}
}
QT_END_NAMESPACE
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