| /* |
| * Copyright (C) 2010 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 "HardwareRenderer" |
| |
| #include "jni.h" |
| #include <nativehelper/JNIHelp.h> |
| #include <android_runtime/AndroidRuntime.h> |
| |
| #ifdef USE_OPENGL_RENDERER |
| #include <EGL/egl_cache.h> |
| EGLAPI void EGLAPIENTRY eglBeginFrame(EGLDisplay dpy, EGLSurface surface); |
| #endif |
| |
| namespace android { |
| |
| /** |
| * Note: OpenGLRenderer JNI layer is generated and compiled only on supported |
| * devices. This means all the logic must be compiled only when the |
| * preprocessor variable USE_OPENGL_RENDERER is defined. |
| */ |
| #ifdef USE_OPENGL_RENDERER |
| |
| // ---------------------------------------------------------------------------- |
| // Defines |
| // ---------------------------------------------------------------------------- |
| |
| // Debug |
| #define DEBUG_RENDERER 0 |
| |
| // Debug |
| #if DEBUG_RENDERER |
| #define RENDERER_LOGD(...) ALOGD(__VA_ARGS__) |
| #else |
| #define RENDERER_LOGD(...) |
| #endif |
| |
| // ---------------------------------------------------------------------------- |
| // Surface and display management |
| // ---------------------------------------------------------------------------- |
| |
| static jboolean android_view_HardwareRenderer_preserveBackBuffer(JNIEnv* env, jobject clazz) { |
| EGLDisplay display = eglGetCurrentDisplay(); |
| EGLSurface surface = eglGetCurrentSurface(EGL_DRAW); |
| |
| eglGetError(); |
| eglSurfaceAttrib(display, surface, EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED); |
| |
| EGLint error = eglGetError(); |
| if (error != EGL_SUCCESS) { |
| RENDERER_LOGD("Could not enable buffer preserved swap behavior (%x)", error); |
| } |
| |
| return error == EGL_SUCCESS; |
| } |
| |
| static jboolean android_view_HardwareRenderer_isBackBufferPreserved(JNIEnv* env, jobject clazz) { |
| EGLDisplay display = eglGetCurrentDisplay(); |
| EGLSurface surface = eglGetCurrentSurface(EGL_DRAW); |
| EGLint value; |
| |
| eglGetError(); |
| eglQuerySurface(display, surface, EGL_SWAP_BEHAVIOR, &value); |
| |
| EGLint error = eglGetError(); |
| if (error != EGL_SUCCESS) { |
| RENDERER_LOGD("Could not query buffer preserved swap behavior (%x)", error); |
| } |
| |
| return error == EGL_SUCCESS && value == EGL_BUFFER_PRESERVED; |
| } |
| |
| static void android_view_HardwareRenderer_disableVsync(JNIEnv* env, jobject clazz) { |
| EGLDisplay display = eglGetCurrentDisplay(); |
| |
| eglGetError(); |
| eglSwapInterval(display, 0); |
| |
| EGLint error = eglGetError(); |
| if (error != EGL_SUCCESS) { |
| RENDERER_LOGD("Could not disable v-sync (%x)", error); |
| } |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // Tracing and debugging |
| // ---------------------------------------------------------------------------- |
| |
| static void android_view_HardwareRenderer_beginFrame(JNIEnv* env, jobject clazz) { |
| EGLDisplay dpy = eglGetCurrentDisplay(); |
| EGLSurface surf = eglGetCurrentSurface(EGL_DRAW); |
| eglBeginFrame(dpy, surf); |
| } |
| |
| #endif // USE_OPENGL_RENDERER |
| |
| // ---------------------------------------------------------------------------- |
| // Shaders |
| // ---------------------------------------------------------------------------- |
| |
| static void android_view_HardwareRenderer_setupShadersDiskCache(JNIEnv* env, jobject clazz, |
| jstring diskCachePath) { |
| |
| const char* cacheArray = env->GetStringUTFChars(diskCachePath, NULL); |
| egl_cache_t::get()->setCacheFilename(cacheArray); |
| env->ReleaseStringUTFChars(diskCachePath, cacheArray); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // JNI Glue |
| // ---------------------------------------------------------------------------- |
| |
| const char* const kClassPathName = "android/view/HardwareRenderer"; |
| |
| static JNINativeMethod gMethods[] = { |
| #ifdef USE_OPENGL_RENDERER |
| { "nIsBackBufferPreserved", "()Z", |
| (void*) android_view_HardwareRenderer_isBackBufferPreserved }, |
| { "nPreserveBackBuffer", "()Z", |
| (void*) android_view_HardwareRenderer_preserveBackBuffer }, |
| { "nDisableVsync", "()V", |
| (void*) android_view_HardwareRenderer_disableVsync }, |
| |
| { "nBeginFrame", "()V", |
| (void*) android_view_HardwareRenderer_beginFrame }, |
| #endif |
| |
| { "nSetupShadersDiskCache", "(Ljava/lang/String;)V", |
| (void*) android_view_HardwareRenderer_setupShadersDiskCache }, |
| }; |
| |
| int register_android_view_HardwareRenderer(JNIEnv* env) { |
| return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods)); |
| } |
| |
| }; |