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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gl/gl_fence_egl.h"
#include "ui/gl/egl_util.h"
#include "ui/gl/gl_bindings.h"
namespace gl {
namespace {
bool g_ignore_egl_sync_failures = false;
} // namespace
// static
void GLFenceEGL::SetIgnoreFailures() {
g_ignore_egl_sync_failures = true;
}
GLFenceEGL::GLFenceEGL() {
display_ = eglGetCurrentDisplay();
sync_ = eglCreateSyncKHR(display_, EGL_SYNC_FENCE_KHR, NULL);
DCHECK(sync_ != EGL_NO_SYNC_KHR);
glFlush();
}
bool GLFenceEGL::HasCompleted() {
EGLint value = 0;
if (eglGetSyncAttribKHR(display_, sync_, EGL_SYNC_STATUS_KHR, &value) !=
EGL_TRUE) {
LOG(ERROR) << "Failed to get EGLSync attribute. error code:"
<< eglGetError();
return true;
}
DCHECK(value == EGL_SIGNALED_KHR || value == EGL_UNSIGNALED_KHR);
return !value || value == EGL_SIGNALED_KHR;
}
void GLFenceEGL::ClientWait() {
EGLint flags = 0;
EGLTimeKHR time = EGL_FOREVER_KHR;
EGLint result = eglClientWaitSyncKHR(display_, sync_, flags, time);
DCHECK(g_ignore_egl_sync_failures || EGL_TIMEOUT_EXPIRED_KHR != result);
if (result == EGL_FALSE) {
LOG(ERROR) << "Failed to wait for EGLSync. error:"
<< ui::GetLastEGLErrorString();
CHECK(g_ignore_egl_sync_failures);
}
}
void GLFenceEGL::ServerWait() {
if (!g_driver_egl.ext.b_EGL_KHR_wait_sync) {
ClientWait();
return;
}
EGLint flags = 0;
if (eglWaitSyncKHR(display_, sync_, flags) == EGL_FALSE) {
LOG(ERROR) << "Failed to wait for EGLSync. error:"
<< ui::GetLastEGLErrorString();
CHECK(g_ignore_egl_sync_failures);
}
}
GLFenceEGL::~GLFenceEGL() {
eglDestroySyncKHR(display_, sync_);
}
} // namespace gl
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