File indexing completed on 2024-05-12 05:31:41

 /*
     SPDX-FileCopyrightText: 2020 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "eglnativefence.h"
 #include "egldisplay.h"
 
 #include <unistd.h>
 
 namespace KWin
 {
 
 #ifndef EGL_ANDROID_native_fence_sync
 #define EGL_SYNC_NATIVE_FENCE_ANDROID 0x3144
 #define EGL_NO_NATIVE_FENCE_FD_ANDROID -1
 #endif // EGL_ANDROID_native_fence_sync
 
 EGLNativeFence::EGLNativeFence(EglDisplay *display)
     : EGLNativeFence(display, eglCreateSyncKHR(display->handle(), EGL_SYNC_NATIVE_FENCE_ANDROID, nullptr))
 {
     if (m_sync != EGL_NO_SYNC_KHR) {
         // The native fence will get a valid sync file fd only after a flush.
         glFlush();
         m_fileDescriptor = FileDescriptor(eglDupNativeFenceFDANDROID(m_display->handle(), m_sync));
     }
 }
 
 EGLNativeFence::EGLNativeFence(EglDisplay *display, EGLSyncKHR sync)
     : m_sync(sync)
     , m_display(display)
 {
 }
 
 EGLNativeFence::~EGLNativeFence()
 {
     m_fileDescriptor.reset();
     if (m_sync != EGL_NO_SYNC_KHR) {
         eglDestroySyncKHR(m_display->handle(), m_sync);
     }
 }
 
 bool EGLNativeFence::isValid() const
 {
     return m_sync != EGL_NO_SYNC_KHR && m_fileDescriptor.isValid();
 }
 
 const FileDescriptor &EGLNativeFence::fileDescriptor() const
 {
     return m_fileDescriptor;
 }
 
 bool EGLNativeFence::waitSync() const
 {
     return eglWaitSync(m_display->handle(), m_sync, 0) == EGL_TRUE;
 }
 
 EGLNativeFence EGLNativeFence::importFence(EglDisplay *display, FileDescriptor &&fd)
 {
     EGLint attributes[] = {
         EGL_SYNC_NATIVE_FENCE_FD_ANDROID, fd.take(),
         EGL_NONE};
     return EGLNativeFence(display, eglCreateSyncKHR(display->handle(), EGL_SYNC_NATIVE_FENCE_ANDROID, attributes));
 }
 
 } // namespace KWin