You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
85 lines
2.6 KiB
85 lines
2.6 KiB
/*
|
|
** Copyright 2013, The Android Open Source Project
|
|
**
|
|
** Licensed under the Apache License, Version 2.0 (the "License");
|
|
** you may not use this file except in compliance with the License.
|
|
** You may obtain a copy of the License at
|
|
**
|
|
** http://www.apache.org/licenses/LICENSE-2.0
|
|
**
|
|
** Unless required by applicable law or agreed to in writing, software
|
|
** distributed under the License is distributed on an "AS IS" BASIS,
|
|
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
** See the License for the specific language governing permissions and
|
|
** limitations under the License.
|
|
*/
|
|
|
|
#define LOG_TAG "GLConsumer"
|
|
|
|
#define EGL_EGLEXT_PROTOTYPES
|
|
|
|
#include <EGL/egl.h>
|
|
#include <EGL/eglext.h>
|
|
|
|
#include <utils/Log.h>
|
|
#include <utils/Singleton.h>
|
|
#include <utils/String8.h>
|
|
|
|
#include <private/gui/SyncFeatures.h>
|
|
|
|
namespace android {
|
|
|
|
ANDROID_SINGLETON_STATIC_INSTANCE(SyncFeatures);
|
|
|
|
SyncFeatures::SyncFeatures() : Singleton<SyncFeatures>(),
|
|
mHasNativeFenceSync(false),
|
|
mHasFenceSync(false),
|
|
mHasWaitSync(false) {
|
|
EGLDisplay dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
|
|
// This can only be called after EGL has been initialized; otherwise the
|
|
// check below will abort.
|
|
const char* exts = eglQueryString(dpy, EGL_EXTENSIONS);
|
|
LOG_ALWAYS_FATAL_IF(exts == nullptr, "eglQueryString failed");
|
|
if (strstr(exts, "EGL_ANDROID_native_fence_sync")) {
|
|
// This makes GLConsumer use the EGL_ANDROID_native_fence_sync
|
|
// extension to create Android native fences to signal when all
|
|
// GLES reads for a given buffer have completed.
|
|
mHasNativeFenceSync = true;
|
|
}
|
|
if (strstr(exts, "EGL_KHR_fence_sync")) {
|
|
mHasFenceSync = true;
|
|
}
|
|
if (strstr(exts, "EGL_KHR_wait_sync")) {
|
|
mHasWaitSync = true;
|
|
}
|
|
mString.append("[using:");
|
|
if (useNativeFenceSync()) {
|
|
mString.append(" EGL_ANDROID_native_fence_sync");
|
|
}
|
|
if (useFenceSync()) {
|
|
mString.append(" EGL_KHR_fence_sync");
|
|
}
|
|
if (useWaitSync()) {
|
|
mString.append(" EGL_KHR_wait_sync");
|
|
}
|
|
mString.append("]");
|
|
}
|
|
|
|
bool SyncFeatures::useNativeFenceSync() const {
|
|
// EGL_ANDROID_native_fence_sync is not compatible with using the
|
|
// EGL_KHR_fence_sync extension for the same purpose.
|
|
return mHasNativeFenceSync;
|
|
}
|
|
bool SyncFeatures::useFenceSync() const {
|
|
return !mHasNativeFenceSync && mHasFenceSync;
|
|
}
|
|
bool SyncFeatures::useWaitSync() const {
|
|
return (useNativeFenceSync() || useFenceSync()) && mHasWaitSync;
|
|
}
|
|
|
|
String8 SyncFeatures::toString() const {
|
|
return mString;
|
|
}
|
|
|
|
} // namespace android
|