Mathias Agopian | ca08833 | 2013-03-28 17:44:13 -0700 | [diff] [blame] | 1 | /* |
| 2 | ** Copyright 2013, The Android Open Source Project |
| 3 | ** |
| 4 | ** Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | ** you may not use this file except in compliance with the License. |
| 6 | ** You may obtain a copy of the License at |
| 7 | ** |
| 8 | ** http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | ** |
| 10 | ** Unless required by applicable law or agreed to in writing, software |
| 11 | ** distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | ** See the License for the specific language governing permissions and |
| 14 | ** limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #define LOG_TAG "GLConsumer" |
| 18 | |
Mathias Agopian | ca08833 | 2013-03-28 17:44:13 -0700 | [diff] [blame] | 19 | #define EGL_EGLEXT_PROTOTYPES |
| 20 | |
| 21 | #include <EGL/egl.h> |
| 22 | #include <EGL/eglext.h> |
| 23 | |
| 24 | #include <utils/Log.h> |
| 25 | #include <utils/Singleton.h> |
| 26 | #include <utils/String8.h> |
| 27 | |
| 28 | #include <private/gui/SyncFeatures.h> |
| 29 | |
Mathias Agopian | ca08833 | 2013-03-28 17:44:13 -0700 | [diff] [blame] | 30 | namespace android { |
| 31 | |
| 32 | ANDROID_SINGLETON_STATIC_INSTANCE(SyncFeatures); |
| 33 | |
| 34 | SyncFeatures::SyncFeatures() : Singleton<SyncFeatures>(), |
| 35 | mHasNativeFenceSync(false), |
| 36 | mHasFenceSync(false), |
| 37 | mHasWaitSync(false) { |
| 38 | EGLDisplay dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY); |
Ian Elliott | 1f0911e | 2022-09-09 16:31:47 -0600 | [diff] [blame] | 39 | // eglQueryString can only be called after EGL has been initialized; |
| 40 | // otherwise the check below will abort. If RenderEngine is using SkiaVk, |
| 41 | // EGL will not have been initialized. There's no problem with initializing |
| 42 | // it again here (it is ref counted), and then terminating it later. |
| 43 | EGLBoolean initialized = eglInitialize(dpy, nullptr, nullptr); |
| 44 | LOG_ALWAYS_FATAL_IF(!initialized, "eglInitialize failed"); |
Yiwei Zhang | 0378f4d | 2020-08-12 15:03:23 -0700 | [diff] [blame] | 45 | const char* exts = eglQueryString(dpy, EGL_EXTENSIONS); |
| 46 | LOG_ALWAYS_FATAL_IF(exts == nullptr, "eglQueryString failed"); |
Mathias Agopian | ca08833 | 2013-03-28 17:44:13 -0700 | [diff] [blame] | 47 | if (strstr(exts, "EGL_ANDROID_native_fence_sync")) { |
| 48 | // This makes GLConsumer use the EGL_ANDROID_native_fence_sync |
| 49 | // extension to create Android native fences to signal when all |
| 50 | // GLES reads for a given buffer have completed. |
| 51 | mHasNativeFenceSync = true; |
| 52 | } |
| 53 | if (strstr(exts, "EGL_KHR_fence_sync")) { |
| 54 | mHasFenceSync = true; |
| 55 | } |
| 56 | if (strstr(exts, "EGL_KHR_wait_sync")) { |
| 57 | mHasWaitSync = true; |
| 58 | } |
| 59 | mString.append("[using:"); |
| 60 | if (useNativeFenceSync()) { |
| 61 | mString.append(" EGL_ANDROID_native_fence_sync"); |
| 62 | } |
| 63 | if (useFenceSync()) { |
| 64 | mString.append(" EGL_KHR_fence_sync"); |
| 65 | } |
| 66 | if (useWaitSync()) { |
| 67 | mString.append(" EGL_KHR_wait_sync"); |
| 68 | } |
| 69 | mString.append("]"); |
Ian Elliott | 1f0911e | 2022-09-09 16:31:47 -0600 | [diff] [blame] | 70 | // Terminate EGL to match the eglInitialize above |
| 71 | eglTerminate(dpy); |
Mathias Agopian | ca08833 | 2013-03-28 17:44:13 -0700 | [diff] [blame] | 72 | } |
| 73 | |
| 74 | bool SyncFeatures::useNativeFenceSync() const { |
| 75 | // EGL_ANDROID_native_fence_sync is not compatible with using the |
| 76 | // EGL_KHR_fence_sync extension for the same purpose. |
| 77 | return mHasNativeFenceSync; |
| 78 | } |
| 79 | bool SyncFeatures::useFenceSync() const { |
Mathias Agopian | ca08833 | 2013-03-28 17:44:13 -0700 | [diff] [blame] | 80 | return !mHasNativeFenceSync && mHasFenceSync; |
Mathias Agopian | ca08833 | 2013-03-28 17:44:13 -0700 | [diff] [blame] | 81 | } |
| 82 | bool SyncFeatures::useWaitSync() const { |
| 83 | return (useNativeFenceSync() || useFenceSync()) && mHasWaitSync; |
| 84 | } |
| 85 | |
| 86 | String8 SyncFeatures::toString() const { |
| 87 | return mString; |
| 88 | } |
| 89 | |
| 90 | } // namespace android |