/*
* 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.badlogic.gdx.backends.android.surfaceview;
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 android.annotation.TargetApi;
import android.content.Context;
import android.graphics.PixelFormat;
import android.opengl.GLSurfaceView;
import android.os.SystemClock;
import android.util.Log;
import android.view.KeyCharacterMap;
import android.view.KeyEvent;
import android.view.inputmethod.BaseInputConnection;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputConnection;
/** A simple GLSurfaceView sub-class that demonstrates how to perform OpenGL ES 2.0 rendering into a GL Surface. Note the following
* important details:
* <p/>
* - The class must use a custom context factory to enable 2.0 rendering. See ContextFactory class definition below.
* <p/>
* - The class must use a custom EGLConfigChooser to be able to select an EGLConfig that supports 2.0. This is done by providing a
* config specification to eglChooseConfig() that has the attribute EGL10.ELG_RENDERABLE_TYPE containing the EGL_OPENGL_ES2_BIT
* flag set. See ConfigChooser class definition below.
* <p/>
* - The class must select the surface's format, then choose an EGLConfig that matches it exactly (with regards to
* red/green/blue/alpha channels bit depths). Failure to do so would result in an EGL_BAD_MATCH error. */
public class GLSurfaceView20 extends GLSurfaceView {
static String TAG = "GL2JNIView";
private static final boolean DEBUG = false;
final ResolutionStrategy resolutionStrategy;
static int targetGLESVersion;
public GLSurfaceView20 (Context context, ResolutionStrategy resolutionStrategy, int targetGLESVersion) {
super(context);
GLSurfaceView20.targetGLESVersion = targetGLESVersion;
this.resolutionStrategy = resolutionStrategy;
init(false, 16, 0);
}
public GLSurfaceView20 (Context context, ResolutionStrategy resolutionStrategy) {
this(context, resolutionStrategy, 2);
}
public GLSurfaceView20 (Context context, boolean translucent, int depth, int stencil, ResolutionStrategy resolutionStrategy) {
super(context);
this.resolutionStrategy = resolutionStrategy;
init(translucent, depth, stencil);
}
@Override
protected void onMeasure (int widthMeasureSpec, int heightMeasureSpec) {
ResolutionStrategy.MeasuredDimension measures = resolutionStrategy.calcMeasures(widthMeasureSpec, heightMeasureSpec);
setMeasuredDimension(measures.width, measures.height);
}
@Override
public InputConnection onCreateInputConnection (EditorInfo outAttrs) {
// add this line, the IME can show the selectable words when use chinese input method editor.
if (outAttrs != null) {
outAttrs.imeOptions = outAttrs.imeOptions | EditorInfo.IME_FLAG_NO_EXTRACT_UI;
}
BaseInputConnection connection = new BaseInputConnection(this, false) {
@Override
public boolean deleteSurroundingText (int beforeLength, int afterLength) {
int sdkVersion = android.os.Build.VERSION.SDK_INT;
if (sdkVersion >= 16) {
/*
* In Jelly Bean, they don't send key events for delete. Instead, they send beforeLength = 1, afterLength = 0. So,
* we'll just simulate what it used to do.
*/
if (beforeLength == 1 && afterLength == 0) {
sendDownUpKeyEventForBackwardCompatibility(KeyEvent.KEYCODE_DEL);
return true;
}
}
return super.deleteSurroundingText(beforeLength, afterLength);
}
@TargetApi(16)
private void sendDownUpKeyEventForBackwardCompatibility (final int code) {
final long eventTime = SystemClock.uptimeMillis();
super.sendKeyEvent(new KeyEvent(eventTime, eventTime, KeyEvent.ACTION_DOWN, code, 0, 0,
KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE));
super.sendKeyEvent(new KeyEvent(SystemClock.uptimeMillis(), eventTime, KeyEvent.ACTION_UP, code, 0, 0,
KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE));
}
};
return connection;
}
private void init (boolean translucent, int depth, int stencil) {
/*
* By default, GLSurfaceView() creates a RGB_565 opaque surface. If we want a translucent one, we should change the
* surface's format here, using PixelFormat.TRANSLUCENT for GL Surfaces is interpreted as any 32-bit surface with alpha by
* SurfaceFlinger.
*/
if (translucent) {
this.getHolder().setFormat(PixelFormat.TRANSLUCENT);
}
/*
* Setup the context factory for 2.0 rendering. See ContextFactory class definition below
*/
setEGLContextFactory(new ContextFactory());
/*
* We need to choose an EGLConfig that matches the format of our surface exactly. This is going to be done in our custom
* config chooser. See ConfigChooser class definition below.
*/
setEGLConfigChooser(translucent ? new ConfigChooser(8, 8, 8, 8, depth, stencil) : new ConfigChooser(5, 6, 5, 0, depth,
stencil));
/* Set the renderer responsible for frame rendering */
}
static class ContextFactory implements GLSurfaceView.EGLContextFactory {
private static int EGL_CONTEXT_CLIENT_VERSION = 0x3098;
public EGLContext createContext (EGL10 egl, EGLDisplay display, EGLConfig eglConfig) {
Log.w(TAG, "creating OpenGL ES " + GLSurfaceView20.targetGLESVersion + ".0 context");
checkEglError("Before eglCreateContext "+targetGLESVersion, egl);
int[] attrib_list = {EGL_CONTEXT_CLIENT_VERSION, GLSurfaceView20.targetGLESVersion, EGL10.EGL_NONE};
EGLContext context = egl.eglCreateContext(display, eglConfig, EGL10.EGL_NO_CONTEXT, attrib_list);
boolean success = checkEglError("After eglCreateContext "+targetGLESVersion, egl);
if ((!success || context == null) && GLSurfaceView20.targetGLESVersion > 2) {
Log.w(TAG, "Falling back to GLES 2");
GLSurfaceView20.targetGLESVersion = 2;
return createContext(egl, display, eglConfig);
}
Log.w(TAG, "Returning a GLES "+targetGLESVersion+" context");
return context;
}
public void destroyContext (EGL10 egl, EGLDisplay display, EGLContext context) {
egl.eglDestroyContext(display, context);
}
}
static boolean checkEglError (String prompt, EGL10 egl) {
int error;
boolean result = true;
while ((error = egl.eglGetError()) != EGL10.EGL_SUCCESS) {
result = false;
Log.e(TAG, String.format("%s: EGL error: 0x%x", prompt, error));
}
return result;
}
private static class ConfigChooser implements GLSurfaceView.EGLConfigChooser {
public ConfigChooser (int r, int g, int b, int a, int depth, int stencil) {
mRedSize = r;
mGreenSize = g;
mBlueSize = b;
mAlphaSize = a;
mDepthSize = depth;
mStencilSize = stencil;
}
/*
* This EGL config specification is used to specify 2.0 rendering. We use a minimum size of 4 bits for red/green/blue, but
* will perform actual matching in chooseConfig() below.
*/
private static int EGL_OPENGL_ES2_BIT = 4;
private static int[] s_configAttribs2 = {EGL10.EGL_RED_SIZE, 4, EGL10.EGL_GREEN_SIZE, 4, EGL10.EGL_BLUE_SIZE, 4,
EGL10.EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, EGL10.EGL_NONE};
public EGLConfig chooseConfig (EGL10 egl, EGLDisplay display) {
/*
* Get the number of minimally matching EGL configurations
*/
int[] num_config = new int[1];
egl.eglChooseConfig(display, s_configAttribs2, null, 0, num_config);
int numConfigs = num_config[0];
if (numConfigs <= 0) {
throw new IllegalArgumentException("No configs match configSpec");
}
/*
* Allocate then read the array of minimally matching EGL configs
*/
EGLConfig[] configs = new EGLConfig[numConfigs];
egl.eglChooseConfig(display, s_configAttribs2, configs, numConfigs, num_config);
if (DEBUG) {
printConfigs(egl, display, configs);
}
/*
* Now return the "best" one
*/
return chooseConfig(egl, display, configs);
}
public EGLConfig chooseConfig (EGL10 egl, EGLDisplay display, EGLConfig[] configs) {
for (EGLConfig config : configs) {
int d = findConfigAttrib(egl, display, config, EGL10.EGL_DEPTH_SIZE, 0);
int s = findConfigAttrib(egl, display, config, EGL10.EGL_STENCIL_SIZE, 0);
// We need at least mDepthSize and mStencilSize bits
if (d < mDepthSize || s < mStencilSize) continue;
// We want an *exact* match for red/green/blue/alpha
int r = findConfigAttrib(egl, display, config, EGL10.EGL_RED_SIZE, 0);
int g = findConfigAttrib(egl, display, config, EGL10.EGL_GREEN_SIZE, 0);
int b = findConfigAttrib(egl, display, config, EGL10.EGL_BLUE_SIZE, 0);
int a = findConfigAttrib(egl, display, config, EGL10.EGL_ALPHA_SIZE, 0);
if (r == mRedSize && g == mGreenSize && b == mBlueSize && a == mAlphaSize) return config;
}
return null;
}
private int findConfigAttrib (EGL10 egl, EGLDisplay display, EGLConfig config, int attribute, int defaultValue) {
if (egl.eglGetConfigAttrib(display, config, attribute, mValue)) {
return mValue[0];
}
return defaultValue;
}
private void printConfigs (EGL10 egl, EGLDisplay display, EGLConfig[] configs) {
int numConfigs = configs.length;
Log.w(TAG, String.format("%d configurations", numConfigs));
for (int i = 0; i < numConfigs; i++) {
Log.w(TAG, String.format("Configuration %d:\n", i));
printConfig(egl, display, configs[i]);
}
}
private void printConfig (EGL10 egl, EGLDisplay display, EGLConfig config) {
int[] attributes = {EGL10.EGL_BUFFER_SIZE, EGL10.EGL_ALPHA_SIZE, EGL10.EGL_BLUE_SIZE, EGL10.EGL_GREEN_SIZE,
EGL10.EGL_RED_SIZE, EGL10.EGL_DEPTH_SIZE, EGL10.EGL_STENCIL_SIZE, EGL10.EGL_CONFIG_CAVEAT, EGL10.EGL_CONFIG_ID,
EGL10.EGL_LEVEL, EGL10.EGL_MAX_PBUFFER_HEIGHT, EGL10.EGL_MAX_PBUFFER_PIXELS, EGL10.EGL_MAX_PBUFFER_WIDTH,
EGL10.EGL_NATIVE_RENDERABLE, EGL10.EGL_NATIVE_VISUAL_ID, EGL10.EGL_NATIVE_VISUAL_TYPE,
0x3030, // EGL10.EGL_PRESERVED_RESOURCES,
EGL10.EGL_SAMPLES, EGL10.EGL_SAMPLE_BUFFERS, EGL10.EGL_SURFACE_TYPE, EGL10.EGL_TRANSPARENT_TYPE,
EGL10.EGL_TRANSPARENT_RED_VALUE, EGL10.EGL_TRANSPARENT_GREEN_VALUE, EGL10.EGL_TRANSPARENT_BLUE_VALUE, 0x3039, // EGL10.EGL_BIND_TO_TEXTURE_RGB,
0x303A, // EGL10.EGL_BIND_TO_TEXTURE_RGBA,
0x303B, // EGL10.EGL_MIN_SWAP_INTERVAL,
0x303C, // EGL10.EGL_MAX_SWAP_INTERVAL,
EGL10.EGL_LUMINANCE_SIZE, EGL10.EGL_ALPHA_MASK_SIZE, EGL10.EGL_COLOR_BUFFER_TYPE, EGL10.EGL_RENDERABLE_TYPE, 0x3042 // EGL10.EGL_CONFORMANT
};
String[] names = {"EGL_BUFFER_SIZE", "EGL_ALPHA_SIZE", "EGL_BLUE_SIZE", "EGL_GREEN_SIZE", "EGL_RED_SIZE",
"EGL_DEPTH_SIZE", "EGL_STENCIL_SIZE", "EGL_CONFIG_CAVEAT", "EGL_CONFIG_ID", "EGL_LEVEL", "EGL_MAX_PBUFFER_HEIGHT",
"EGL_MAX_PBUFFER_PIXELS", "EGL_MAX_PBUFFER_WIDTH", "EGL_NATIVE_RENDERABLE", "EGL_NATIVE_VISUAL_ID",
"EGL_NATIVE_VISUAL_TYPE", "EGL_PRESERVED_RESOURCES", "EGL_SAMPLES", "EGL_SAMPLE_BUFFERS", "EGL_SURFACE_TYPE",
"EGL_TRANSPARENT_TYPE", "EGL_TRANSPARENT_RED_VALUE", "EGL_TRANSPARENT_GREEN_VALUE", "EGL_TRANSPARENT_BLUE_VALUE",
"EGL_BIND_TO_TEXTURE_RGB", "EGL_BIND_TO_TEXTURE_RGBA", "EGL_MIN_SWAP_INTERVAL", "EGL_MAX_SWAP_INTERVAL",
"EGL_LUMINANCE_SIZE", "EGL_ALPHA_MASK_SIZE", "EGL_COLOR_BUFFER_TYPE", "EGL_RENDERABLE_TYPE", "EGL_CONFORMANT"};
int[] value = new int[1];
for (int i = 0; i < attributes.length; i++) {
int attribute = attributes[i];
String name = names[i];
if (egl.eglGetConfigAttrib(display, config, attribute, value)) {
Log.w(TAG, String.format(" %s: %d\n", name, value[0]));
} else {
// Log.w(TAG, String.format(" %s: failed\n", name));
while (egl.eglGetError() != EGL10.EGL_SUCCESS)
;
}
}
}
// Subclasses can adjust these values:
protected int mRedSize;
protected int mGreenSize;
protected int mBlueSize;
protected int mAlphaSize;
protected int mDepthSize;
protected int mStencilSize;
private int[] mValue = new int[1];
}
}