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// Copyright (C) 2024 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
// Qt-Security score:significant reason:default
#include "egl_helper.h"
#include "ozone_util_qt.h"
#include "web_engine_context.h"
#include <QtGui/qguiapplication.h>
#include <QtGui/qopenglcontext.h>
#include <QtGui/qopenglfunctions.h>
#include <qpa/qplatformnativeinterface.h>
#include <cstdint>
#include <unistd.h>
#include <vector>
namespace {
static const char *getEGLErrorString(uint32_t error)
{
switch (error) {
case EGL_SUCCESS:
return "EGL_SUCCESS";
case EGL_NOT_INITIALIZED:
return "EGL_NOT_INITIALIZED";
case EGL_BAD_ACCESS:
return "EGL_BAD_ACCESS";
case EGL_BAD_ALLOC:
return "EGL_BAD_ALLOC";
case EGL_BAD_ATTRIBUTE:
return "EGL_BAD_ATTRIBUTE";
case EGL_BAD_CONFIG:
return "EGL_BAD_CONFIG";
case EGL_BAD_CONTEXT:
return "EGL_BAD_CONTEXT";
case EGL_BAD_CURRENT_SURFACE:
return "EGL_BAD_CURRENT_SURFACE";
case EGL_BAD_DISPLAY:
return "EGL_BAD_DISPLAY";
case EGL_BAD_MATCH:
return "EGL_BAD_MATCH";
case EGL_BAD_NATIVE_PIXMAP:
return "EGL_BAD_NATIVE_PIXMAP";
case EGL_BAD_NATIVE_WINDOW:
return "EGL_BAD_NATIVE_WINDOW";
case EGL_BAD_PARAMETER:
return "EGL_BAD_PARAMETER";
case EGL_BAD_SURFACE:
return "EGL_BAD_SURFACE";
case EGL_CONTEXT_LOST:
return "EGL_CONTEXT_LOST";
default:
return "UNKNOWN";
}
}
} // namespace
QT_BEGIN_NAMESPACE
EGLHelper::EGLFunctions::EGLFunctions()
{
QOpenGLContext *context = OzoneUtilQt::getQOpenGLContext();
eglCreateImage =
reinterpret_cast<PFNEGLCREATEIMAGEPROC>(context->getProcAddress("eglCreateImage"));
eglCreateDRMImageMESA = reinterpret_cast<PFNEGLCREATEDRMIMAGEMESAPROC>(
context->getProcAddress("eglCreateDRMImageMESA"));
eglDestroyImage =
reinterpret_cast<PFNEGLDESTROYIMAGEPROC>(context->getProcAddress("eglDestroyImage"));
eglExportDMABUFImageMESA = reinterpret_cast<PFNEGLEXPORTDMABUFIMAGEMESAPROC>(
context->getProcAddress("eglExportDMABUFImageMESA"));
eglExportDMABUFImageQueryMESA = reinterpret_cast<PFNEGLEXPORTDMABUFIMAGEQUERYMESAPROC>(
context->getProcAddress("eglExportDMABUFImageQueryMESA"));
eglGetCurrentContext = reinterpret_cast<PFNEGLGETCURRENTCONTEXTPROC>(
context->getProcAddress("eglGetCurrentContext"));
eglGetCurrentDisplay = reinterpret_cast<PFNEGLGETCURRENTDISPLAYPROC>(
context->getProcAddress("eglGetCurrentDisplay"));
eglGetCurrentSurface = reinterpret_cast<PFNEGLGETCURRENTSURFACEPROC>(
context->getProcAddress("eglGetCurrentSurface"));
eglGetError = reinterpret_cast<PFNEGLGETERRORPROC>(context->getProcAddress("eglGetError"));
eglMakeCurrent =
reinterpret_cast<PFNEGLMAKECURRENTPROC>(context->getProcAddress("eglMakeCurrent"));
eglQueryString =
reinterpret_cast<PFNEGLQUERYSTRINGPROC>(context->getProcAddress("eglQueryString"));
}
EGLHelper *EGLHelper::instance()
{
static EGLHelper eglHelper;
return &eglHelper;
}
EGLHelper::EGLHelper()
: m_eglDisplay(qApp->platformNativeInterface()->nativeResourceForIntegration("egldisplay"))
, m_functions(new EGLHelper::EGLFunctions())
{
const char *extensions = m_functions->eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS);
if (!extensions) {
qWarning("EGL: Failed to query EGL extensions.");
return;
}
if (strstr(extensions, "EGL_KHR_base_image")) {
qWarning("EGL: EGL_KHR_base_image extension is not supported.");
return;
}
if (m_eglDisplay == EGL_NO_DISPLAY) {
qWarning("EGL: No EGL display.");
return;
}
m_isDmaBufSupported = QtWebEngineCore::WebEngineContext::isGbmSupported();
// Check extensions.
if (m_isDmaBufSupported) {
const char *displayExtensions = m_functions->eglQueryString(m_eglDisplay, EGL_EXTENSIONS);
m_isDmaBufSupported = strstr(displayExtensions, "EGL_EXT_image_dma_buf_import")
&& strstr(displayExtensions, "EGL_EXT_image_dma_buf_import_modifiers")
&& strstr(displayExtensions, "EGL_MESA_drm_image")
&& strstr(displayExtensions, "EGL_MESA_image_dma_buf_export");
}
// Try to create dma-buf.
if (m_isDmaBufSupported) {
int fd = -1;
queryDmaBuf(2, 2, &fd, nullptr, nullptr, nullptr);
if (fd == -1)
m_isDmaBufSupported = false;
else
close(fd);
}
}
void EGLHelper::queryDmaBuf(const int width, const int height, int *fd, int *stride, int *offset,
uint64_t *modifiers)
{
if (!m_isDmaBufSupported)
return;
// clang-format off
EGLint attribs[] = {
EGL_WIDTH, width,
EGL_HEIGHT, height,
EGL_DRM_BUFFER_FORMAT_MESA, EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
EGL_DRM_BUFFER_USE_MESA, EGL_DRM_BUFFER_USE_SHARE_MESA,
EGL_NONE
};
// clang-format on
EGLImage eglImage = m_functions->eglCreateDRMImageMESA(m_eglDisplay, attribs);
if (eglImage == EGL_NO_IMAGE) {
qWarning("EGL: Failed to create EGLImage: %s", getLastEGLErrorString());
return;
}
int numPlanes = 0;
if (!m_functions->eglExportDMABUFImageQueryMESA(m_eglDisplay, eglImage, nullptr, &numPlanes,
modifiers)) {
qWarning("EGL: Failed to retrieve the pixel format of the buffer: %s",
getLastEGLErrorString());
}
Q_ASSERT(numPlanes == 1);
if (!m_functions->eglExportDMABUFImageMESA(m_eglDisplay, eglImage, fd, stride, offset)) {
qWarning("EGL: Failed to retrieve the dma_buf file descriptor: %s",
getLastEGLErrorString());
}
m_functions->eglDestroyImage(m_eglDisplay, eglImage);
}
const char *EGLHelper::getLastEGLErrorString() const
{
return getEGLErrorString(m_functions->eglGetError());
}
QT_END_NAMESPACE
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