51 lines
1.2 KiB
C++
51 lines
1.2 KiB
C++
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/*
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SPDX-FileCopyrightText: 2020 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "eglnativefence.h"
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#include <unistd.h>
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namespace KWin
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{
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#ifndef EGL_ANDROID_native_fence_sync
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#define EGL_SYNC_NATIVE_FENCE_ANDROID 0x3144
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#define EGL_NO_NATIVE_FENCE_FD_ANDROID -1
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#endif // EGL_ANDROID_native_fence_sync
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EGLNativeFence::EGLNativeFence(EGLDisplay display)
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: m_display(display)
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{
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m_sync = eglCreateSyncKHR(m_display, EGL_SYNC_NATIVE_FENCE_ANDROID, nullptr);
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if (m_sync != EGL_NO_SYNC_KHR) {
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// The native fence will get a valid sync file fd only after a flush.
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glFlush();
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m_fileDescriptor = eglDupNativeFenceFDANDROID(m_display, m_sync);
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}
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}
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EGLNativeFence::~EGLNativeFence()
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{
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if (m_fileDescriptor != EGL_NO_NATIVE_FENCE_FD_ANDROID) {
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close(m_fileDescriptor);
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}
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if (m_sync != EGL_NO_SYNC_KHR) {
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eglDestroySyncKHR(m_display, m_sync);
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}
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}
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bool EGLNativeFence::isValid() const
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{
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return m_sync != EGL_NO_SYNC_KHR && m_fileDescriptor != EGL_NO_NATIVE_FENCE_FD_ANDROID;
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}
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int EGLNativeFence::fileDescriptor() const
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{
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return m_fileDescriptor;
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}
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} // namespace KWin
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