/*
* Copyright (C) 2009 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.
*/
package com.android.systemui;
import static android.opengl.GLES20.*;
import static javax.microedition.khronos.egl.EGL10.*;
import android.app.ActivityManager;
import android.app.WallpaperManager;
import android.content.BroadcastReceiver;
import android.content.ComponentCallbacks2;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Point;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Region.Op;
import android.opengl.GLUtils;
import android.os.SystemProperties;
import android.renderscript.Matrix4f;
import android.service.wallpaper.WallpaperService;
import android.util.Log;
import android.view.Display;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.WindowManager;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;
import javax.microedition.khronos.egl.EGL10;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.egl.EGLContext;
import javax.microedition.khronos.egl.EGLDisplay;
import javax.microedition.khronos.egl.EGLSurface;
/**
* Default built-in wallpaper that simply shows a static image.
*/
@SuppressWarnings({"UnusedDeclaration"})
public class ImageWallpaper extends WallpaperService {
private static final String TAG = "ImageWallpaper";
private static final String GL_LOG_TAG = "ImageWallpaperGL";
private static final boolean DEBUG = false;
private static final String PROPERTY_KERNEL_QEMU = "ro.kernel.qemu";
static final boolean FIXED_SIZED_SURFACE = true;
static final boolean USE_OPENGL = true;
WallpaperManager mWallpaperManager;
DrawableEngine mEngine;
boolean mIsHwAccelerated;
@Override
public void onCreate() {
super.onCreate();
mWallpaperManager = (WallpaperManager) getSystemService(WALLPAPER_SERVICE);
//noinspection PointlessBooleanExpression,ConstantConditions
if (FIXED_SIZED_SURFACE && USE_OPENGL) {
if (!isEmulator()) {
mIsHwAccelerated = ActivityManager.isHighEndGfx();
}
}
}
@Override
public void onTrimMemory(int level) {
if (mEngine != null) {
mEngine.trimMemory(level);
}
}
private static boolean isEmulator() {
return "1".equals(SystemProperties.get(PROPERTY_KERNEL_QEMU, "0"));
}
@Override
public Engine onCreateEngine() {
mEngine = new DrawableEngine();
return mEngine;
}
class DrawableEngine extends Engine {
static final int EGL_CONTEXT_CLIENT_VERSION = 0x3098;
static final int EGL_OPENGL_ES2_BIT = 4;
Bitmap mBackground;
int mBackgroundWidth = -1, mBackgroundHeight = -1;
int mLastSurfaceWidth = -1, mLastSurfaceHeight = -1;
int mLastRotation = -1;
float mXOffset = 0.5f;
float mYOffset = 0.5f;
float mScale = 1f;
boolean mVisible = true;
boolean mRedrawNeeded;
boolean mOffsetsChanged;
int mLastXTranslation;
int mLastYTranslation;
private EGL10 mEgl;
private EGLDisplay mEglDisplay;
private EGLConfig mEglConfig;
private EGLContext mEglContext;
private EGLSurface mEglSurface;
private static final String sSimpleVS =
"attribute vec4 position;\n" +
"attribute vec2 texCoords;\n" +
"varying vec2 outTexCoords;\n" +
"uniform mat4 projection;\n" +
"\nvoid main(void) {\n" +
" outTexCoords = texCoords;\n" +
" gl_Position = projection * position;\n" +
"}\n\n";
private static final String sSimpleFS =
"precision mediump float;\n\n" +
"varying vec2 outTexCoords;\n" +
"uniform sampler2D texture;\n" +
"\nvoid main(void) {\n" +
" gl_FragColor = texture2D(texture, outTexCoords);\n" +
"}\n\n";
private static final int FLOAT_SIZE_BYTES = 4;
private static final int TRIANGLE_VERTICES_DATA_STRIDE_BYTES = 5 * FLOAT_SIZE_BYTES;
private static final int TRIANGLE_VERTICES_DATA_POS_OFFSET = 0;
private static final int TRIANGLE_VERTICES_DATA_UV_OFFSET = 3;
public DrawableEngine() {
super();
setFixedSizeAllowed(true);
}
public void trimMemory(int level) {
if (level >= ComponentCallbacks2.TRIM_MEMORY_RUNNING_LOW &&
mBackground != null) {
if (DEBUG) {
Log.d(TAG, "trimMemory");
}
mBackground.recycle();
mBackground = null;
mBackgroundWidth = -1;
mBackgroundHeight = -1;
mWallpaperManager.forgetLoadedWallpaper();
}
}
@Override
public void onCreate(SurfaceHolder surfaceHolder) {
if (DEBUG) {
Log.d(TAG, "onCreate");
}
super.onCreate(surfaceHolder);
updateSurfaceSize(surfaceHolder);
setOffsetNotificationsEnabled(false);
}
@Override
public void onDestroy() {
super.onDestroy();
mBackground = null;
mWallpaperManager.forgetLoadedWallpaper();
}
void updateSurfaceSize(SurfaceHolder surfaceHolder) {
Point p = getDefaultDisplaySize();
// Load background image dimensions, if we haven't saved them yet
if (mBackgroundWidth <= 0 || mBackgroundHeight <= 0) {
// Need to load the image to get dimensions
mWallpaperManager.forgetLoadedWallpaper();
updateWallpaperLocked();
if (mBackgroundWidth <= 0 || mBackgroundHeight <= 0) {
// Default to the display size if we can't find the dimensions
mBackgroundWidth = p.x;
mBackgroundHeight = p.y;
}
}
// Force the wallpaper to cover the screen in both dimensions
int surfaceWidth = Math.max(p.x, mBackgroundWidth);
int surfaceHeight = Math.max(p.y, mBackgroundHeight);
// If the surface dimensions haven't changed, then just return
final Rect frame = surfaceHolder.getSurfaceFrame();
if (frame != null) {
final int dw = frame.width();
final int dh = frame.height();
if (surfaceWidth == dw && surfaceHeight == dh) {
return;
}
}
if (FIXED_SIZED_SURFACE) {
// Used a fixed size surface, because we are special. We can do
// this because we know the current design of window animations doesn't
// cause this to break.
surfaceHolder.setFixedSize(surfaceWidth, surfaceHeight);
} else {
surfaceHolder.setSizeFromLayout();
}
}
@Override
public void onVisibilityChanged(boolean visible) {
if (DEBUG) {
Log.d(TAG, "onVisibilityChanged: mVisible, visible=" + mVisible + ", " + visible);
}
if (mVisible != visible) {
if (DEBUG) {
Log.d(TAG, "Visibility changed to visible=" + visible);
}
mVisible = visible;
drawFrame();
}
}
@Override
public void onTouchEvent(MotionEvent event) {
super.onTouchEvent(event);
}
@Override
public void onOffsetsChanged(float xOffset, float yOffset,
float xOffsetStep, float yOffsetStep,
int xPixels, int yPixels) {
if (DEBUG) {
Log.d(TAG, "onOffsetsChanged: xOffset=" + xOffset + ", yOffset=" + yOffset
+ ", xOffsetStep=" + xOffsetStep + ", yOffsetStep=" + yOffsetStep
+ ", xPixels=" + xPixels + ", yPixels=" + yPixels);
}
if (mXOffset != xOffset || mYOffset != yOffset) {
if (DEBUG) {
Log.d(TAG, "Offsets changed to (" + xOffset + "," + yOffset + ").");
}
mXOffset = xOffset;
mYOffset = yOffset;
mOffsetsChanged = true;
}
drawFrame();
}
@Override
public void onSurfaceChanged(SurfaceHolder holder, int format, int width, int height) {
if (DEBUG) {
Log.d(TAG, "onSurfaceChanged: width=" + width + ", height=" + height);
}
super.onSurfaceChanged(holder, format, width, height);
drawFrame();
}
@Override
public void onSurfaceDestroyed(SurfaceHolder holder) {
super.onSurfaceDestroyed(holder);
mLastSurfaceWidth = mLastSurfaceHeight = -1;
}
@Override
public void onSurfaceCreated(SurfaceHolder holder) {
super.onSurfaceCreated(holder);
mLastSurfaceWidth = mLastSurfaceHeight = -1;
}
@Override
public void onSurfaceRedrawNeeded(SurfaceHolder holder) {
if (DEBUG) {
Log.d(TAG, "onSurfaceRedrawNeeded");
}
super.onSurfaceRedrawNeeded(holder);
drawFrame();
}
private Point getDefaultDisplaySize() {
Point p = new Point();
Context c = ImageWallpaper.this.getApplicationContext();
WindowManager wm = (WindowManager)c.getSystemService(Context.WINDOW_SERVICE);
Display d = wm.getDefaultDisplay();
d.getRealSize(p);
return p;
}
void drawFrame() {
try {
int newRotation = ((WindowManager) getSystemService(WINDOW_SERVICE)).
getDefaultDisplay().getRotation();
// Sometimes a wallpaper is not large enough to cover the screen in one dimension.
// Call updateSurfaceSize -- it will only actually do the update if the dimensions
// should change
if (newRotation != mLastRotation) {
// Update surface size (if necessary)
updateSurfaceSize(getSurfaceHolder());
}
SurfaceHolder sh = getSurfaceHolder();
final Rect frame = sh.getSurfaceFrame();
final int dw = frame.width();
final int dh = frame.height();
boolean surfaceDimensionsChanged = dw != mLastSurfaceWidth
|| dh != mLastSurfaceHeight;
boolean redrawNeeded = surfaceDimensionsChanged || newRotation != mLastRotation;
if (!redrawNeeded && !mOffsetsChanged) {
if (DEBUG) {
Log.d(TAG, "Suppressed drawFrame since redraw is not needed "
+ "and offsets have not changed.");
}
return;
}
mLastRotation = newRotation;
// Load bitmap if it is not yet loaded or if it was loaded at a different size
if (mBackground == null || surfaceDimensionsChanged) {
if (DEBUG) {
Log.d(TAG, "Reloading bitmap: mBackground, bgw, bgh, dw, dh = " +
mBackground + ", " +
((mBackground == null) ? 0 : mBackground.getWidth()) + ", " +
((mBackground == null) ? 0 : mBackground.getHeight()) + ", " +
dw + ", " + dh);
}
mWallpaperManager.forgetLoadedWallpaper();
updateWallpaperLocked();
if (mBackground == null) {
if (DEBUG) {
Log.d(TAG, "Unable to load bitmap");
}
return;
}
if (DEBUG) {
if (dw != mBackground.getWidth() || dh != mBackground.getHeight()) {
Log.d(TAG, "Surface != bitmap dimensions: surface w/h, bitmap w/h: " +
dw + ", " + dh + ", " + mBackground.getWidth() + ", " +
mBackground.getHeight());
}
}
}
// Center the scaled image
mScale = Math.max(1f, Math.max(dw / (float) mBackground.getWidth(),
dh / (float) mBackground.getHeight()));
final int availw = dw - (int) (mBackground.getWidth() * mScale);
final int availh = dh - (int) (mBackground.getHeight() * mScale);
int xPixels = availw / 2;
int yPixels = availh / 2;
// Adjust the image for xOffset/yOffset values. If window manager is handling offsets,
// mXOffset and mYOffset are set to 0.5f by default and therefore xPixels and yPixels
// will remain unchanged
final int availwUnscaled = dw - mBackground.getWidth();
final int availhUnscaled = dh - mBackground.getHeight();
if (availwUnscaled < 0)
xPixels += (int) (availwUnscaled * (mXOffset - .5f) + .5f);
if (availhUnscaled < 0)
yPixels += (int) (availhUnscaled * (mYOffset - .5f) + .5f);
mOffsetsChanged = false;
mRedrawNeeded = false;
if (surfaceDimensionsChanged) {
mLastSurfaceWidth = dw;
mLastSurfaceHeight = dh;
}
if (!redrawNeeded && xPixels == mLastXTranslation && yPixels == mLastYTranslation) {
if (DEBUG) {
Log.d(TAG, "Suppressed drawFrame since the image has not "
+ "actually moved an integral number of pixels.");
}
return;
}
mLastXTranslation = xPixels;
mLastYTranslation = yPixels;
if (DEBUG) {
Log.d(TAG, "Redrawing wallpaper");
}
if (mIsHwAccelerated) {
if (!drawWallpaperWithOpenGL(sh, availw, availh, xPixels, yPixels)) {
drawWallpaperWithCanvas(sh, availw, availh, xPixels, yPixels);
}
} else {
drawWallpaperWithCanvas(sh, availw, availh, xPixels, yPixels);
}
} finally {
if (FIXED_SIZED_SURFACE && !mIsHwAccelerated) {
// If the surface is fixed-size, we should only need to
// draw it once and then we'll let the window manager
// position it appropriately. As such, we no longer needed
// the loaded bitmap. Yay!
// hw-accelerated renderer retains bitmap for faster rotation
mBackground = null;
mWallpaperManager.forgetLoadedWallpaper();
}
}
}
private void updateWallpaperLocked() {
Throwable exception = null;
try {
mBackground = null;
mBackgroundWidth = -1;
mBackgroundHeight = -1;
mBackground = mWallpaperManager.getBitmap();
mBackgroundWidth = mBackground.getWidth();
mBackgroundHeight = mBackground.getHeight();
} catch (RuntimeException e) {
exception = e;
} catch (OutOfMemoryError e) {
exception = e;
}
if (exception != null) {
mBackground = null;
mBackgroundWidth = -1;
mBackgroundHeight = -1;
// Note that if we do fail at this, and the default wallpaper can't
// be loaded, we will go into a cycle. Don't do a build where the
// default wallpaper can't be loaded.
Log.w(TAG, "Unable to load wallpaper!", exception);
try {
mWallpaperManager.clear();
} catch (IOException ex) {
// now we're really screwed.
Log.w(TAG, "Unable reset to default wallpaper!", ex);
}
}
}
private void drawWallpaperWithCanvas(SurfaceHolder sh, int w, int h, int left, int top) {
Canvas c = sh.lockCanvas();
if (c != null) {
try {
if (DEBUG) {
Log.d(TAG, "Redrawing: left=" + left + ", top=" + top);
}
final float right = left + mBackground.getWidth() * mScale;
final float bottom = top + mBackground.getHeight() * mScale;
if (w < 0 || h < 0) {
c.save(Canvas.CLIP_SAVE_FLAG);
c.clipRect(left, top, right, bottom,
Op.DIFFERENCE);
c.drawColor(0xff000000);
c.restore();
}
if (mBackground != null) {
RectF dest = new RectF(left, top, right, bottom);
// add a filter bitmap?
c.drawBitmap(mBackground, null, dest, null);
}
} finally {
sh.unlockCanvasAndPost(c);
}
}
}
private boolean drawWallpaperWithOpenGL(SurfaceHolder sh, int w, int h, int left, int top) {
if (!initGL(sh)) return false;
final float right = left + mBackground.getWidth() * mScale;
final float bottom = top + mBackground.getHeight() * mScale;
final Rect frame = sh.getSurfaceFrame();
final Matrix4f ortho = new Matrix4f();
ortho.loadOrtho(0.0f, frame.width(), frame.height(), 0.0f, -1.0f, 1.0f);
final FloatBuffer triangleVertices = createMesh(left, top, right, bottom);
final int texture = loadTexture(mBackground);
final int program = buildProgram(sSimpleVS, sSimpleFS);
final int attribPosition = glGetAttribLocation(program, "position");
final int attribTexCoords = glGetAttribLocation(program, "texCoords");
final int uniformTexture = glGetUniformLocation(program, "texture");
final int uniformProjection = glGetUniformLocation(program, "projection");
checkGlError();
glViewport(0, 0, frame.width(), frame.height());
glBindTexture(GL_TEXTURE_2D, texture);
glUseProgram(program);
glEnableVertexAttribArray(attribPosition);
glEnableVertexAttribArray(attribTexCoords);
glUniform1i(uniformTexture, 0);
glUniformMatrix4fv(uniformProjection, 1, false, ortho.getArray(), 0);
checkGlError();
if (w > 0 || h > 0) {
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glClear(GL_COLOR_BUFFER_BIT);
}
// drawQuad
triangleVertices.position(TRIANGLE_VERTICES_DATA_POS_OFFSET);
glVertexAttribPointer(attribPosition, 3, GL_FLOAT, false,
TRIANGLE_VERTICES_DATA_STRIDE_BYTES, triangleVertices);
triangleVertices.position(TRIANGLE_VERTICES_DATA_UV_OFFSET);
glVertexAttribPointer(attribTexCoords, 3, GL_FLOAT, false,
TRIANGLE_VERTICES_DATA_STRIDE_BYTES, triangleVertices);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
boolean status = mEgl.eglSwapBuffers(mEglDisplay, mEglSurface);
checkEglError();
finishGL(texture, program);
return status;
}
private FloatBuffer createMesh(int left, int top, float right, float bottom) {
final float[] verticesData = {
// X, Y, Z, U, V
left, bottom, 0.0f, 0.0f, 1.0f,
right, bottom, 0.0f, 1.0f, 1.0f,
left, top, 0.0f, 0.0f, 0.0f,
right, top, 0.0f, 1.0f, 0.0f,
};
final int bytes = verticesData.length * FLOAT_SIZE_BYTES;
final FloatBuffer triangleVertices = ByteBuffer.allocateDirect(bytes).order(
ByteOrder.nativeOrder()).asFloatBuffer();
triangleVertices.put(verticesData).position(0);
return triangleVertices;
}
private int loadTexture(Bitmap bitmap) {
int[] textures = new int[1];
glActiveTexture(GL_TEXTURE0);
glGenTextures(1, textures, 0);
checkGlError();
int texture = textures[0];
glBindTexture(GL_TEXTURE_2D, texture);
checkGlError();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
GLUtils.texImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bitmap, GL_UNSIGNED_BYTE, 0);
checkGlError();
return texture;
}
private int buildProgram(String vertex, String fragment) {
int vertexShader = buildShader(vertex, GL_VERTEX_SHADER);
if (vertexShader == 0) return 0;
int fragmentShader = buildShader(fragment, GL_FRAGMENT_SHADER);
if (fragmentShader == 0) return 0;
int program = glCreateProgram();
glAttachShader(program, vertexShader);
glAttachShader(program, fragmentShader);
glLinkProgram(program);
checkGlError();
glDeleteShader(vertexShader);
glDeleteShader(fragmentShader);
int[] status = new int[1];
glGetProgramiv(program, GL_LINK_STATUS, status, 0);
if (status[0] != GL_TRUE) {
String error = glGetProgramInfoLog(program);
Log.d(GL_LOG_TAG, "Error while linking program:\n" + error);
glDeleteProgram(program);
return 0;
}
return program;
}
private int buildShader(String source, int type) {
int shader = glCreateShader(type);
glShaderSource(shader, source);
checkGlError();
glCompileShader(shader);
checkGlError();
int[] status = new int[1];
glGetShaderiv(shader, GL_COMPILE_STATUS, status, 0);
if (status[0] != GL_TRUE) {
String error = glGetShaderInfoLog(shader);
Log.d(GL_LOG_TAG, "Error while compiling shader:\n" + error);
glDeleteShader(shader);
return 0;
}
return shader;
}
private void checkEglError() {
int error = mEgl.eglGetError();
if (error != EGL_SUCCESS) {
Log.w(GL_LOG_TAG, "EGL error = " + GLUtils.getEGLErrorString(error));
}
}
private void checkGlError() {
int error = glGetError();
if (error != GL_NO_ERROR) {
Log.w(GL_LOG_TAG, "GL error = 0x" + Integer.toHexString(error), new Throwable());
}
}
private void finishGL(int texture, int program) {
int[] textures = new int[1];
textures[0] = texture;
glDeleteTextures(1, textures, 0);
glDeleteProgram(program);
mEgl.eglMakeCurrent(mEglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
mEgl.eglDestroySurface(mEglDisplay, mEglSurface);
mEgl.eglDestroyContext(mEglDisplay, mEglContext);
mEgl.eglTerminate(mEglDisplay);
}
private boolean initGL(SurfaceHolder surfaceHolder) {
mEgl = (EGL10) EGLContext.getEGL();
mEglDisplay = mEgl.eglGetDisplay(EGL_DEFAULT_DISPLAY);
if (mEglDisplay == EGL_NO_DISPLAY) {
throw new RuntimeException("eglGetDisplay failed " +
GLUtils.getEGLErrorString(mEgl.eglGetError()));
}
int[] version = new int[2];
if (!mEgl.eglInitialize(mEglDisplay, version)) {
throw new RuntimeException("eglInitialize failed " +
GLUtils.getEGLErrorString(mEgl.eglGetError()));
}
mEglConfig = chooseEglConfig();
if (mEglConfig == null) {
throw new RuntimeException("eglConfig not initialized");
}
mEglContext = createContext(mEgl, mEglDisplay, mEglConfig);
if (mEglContext == EGL_NO_CONTEXT) {
throw new RuntimeException("createContext failed " +
GLUtils.getEGLErrorString(mEgl.eglGetError()));
}
int attribs[] = {
EGL_WIDTH, 1,
EGL_HEIGHT, 1,
EGL_NONE
};
EGLSurface tmpSurface = mEgl.eglCreatePbufferSurface(mEglDisplay, mEglConfig, attribs);
mEgl.eglMakeCurrent(mEglDisplay, tmpSurface, tmpSurface, mEglContext);
int[] maxSize = new int[1];
Rect frame = surfaceHolder.getSurfaceFrame();
glGetIntegerv(GL_MAX_TEXTURE_SIZE, maxSize, 0);
mEgl.eglMakeCurrent(mEglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
mEgl.eglDestroySurface(mEglDisplay, tmpSurface);
if(frame.width() > maxSize[0] || frame.height() > maxSize[0]) {
mEgl.eglDestroyContext(mEglDisplay, mEglContext);
mEgl.eglTerminate(mEglDisplay);
Log.e(GL_LOG_TAG, "requested texture size " +
frame.width() + "x" + frame.height() + " exceeds the support maximum of " +
maxSize[0] + "x" + maxSize[0]);
return false;
}
mEglSurface = mEgl.eglCreateWindowSurface(mEglDisplay, mEglConfig, surfaceHolder, null);
if (mEglSurface == null || mEglSurface == EGL_NO_SURFACE) {
int error = mEgl.eglGetError();
if (error == EGL_BAD_NATIVE_WINDOW || error == EGL_BAD_ALLOC) {
Log.e(GL_LOG_TAG, "createWindowSurface returned " +
GLUtils.getEGLErrorString(error) + ".");
return false;
}
throw new RuntimeException("createWindowSurface failed " +
GLUtils.getEGLErrorString(error));
}
if (!mEgl.eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface, mEglContext)) {
throw new RuntimeException("eglMakeCurrent failed " +
GLUtils.getEGLErrorString(mEgl.eglGetError()));
}
return true;
}
EGLContext createContext(EGL10 egl, EGLDisplay eglDisplay, EGLConfig eglConfig) {
int[] attrib_list = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE };
return egl.eglCreateContext(eglDisplay, eglConfig, EGL_NO_CONTEXT, attrib_list);
}
private EGLConfig chooseEglConfig() {
int[] configsCount = new int[1];
EGLConfig[] configs = new EGLConfig[1];
int[] configSpec = getConfig();
if (!mEgl.eglChooseConfig(mEglDisplay, configSpec, configs, 1, configsCount)) {
throw new IllegalArgumentException("eglChooseConfig failed " +
GLUtils.getEGLErrorString(mEgl.eglGetError()));
} else if (configsCount[0] > 0) {
return configs[0];
}
return null;
}
private int[] getConfig() {
return new int[] {
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_ALPHA_SIZE, 0,
EGL_DEPTH_SIZE, 0,
EGL_STENCIL_SIZE, 0,
EGL_CONFIG_CAVEAT, EGL_NONE,
EGL_NONE
};
}
}
}
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