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Initial import of the flexible GL surface view

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This commit is contained in:
Patrick Walton
2012-01-31 21:35:52 -08:00
parent 2eeb62f6e6
commit a1279a59af
5 changed files with 608 additions and 3 deletions
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mobile/android/base/gfx/GLController.java Normal file
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/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Android code.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2011-2012
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Patrick Walton <pcwalton@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
package org.mozilla.gecko.gfx;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import javax.microedition.khronos.egl.EGL10;
import javax.microedition.khronos.egl.EGL11;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.egl.EGLContext;
import javax.microedition.khronos.egl.EGLDisplay;
import javax.microedition.khronos.egl.EGLSurface;
import javax.microedition.khronos.opengles.GL;
import javax.microedition.khronos.opengles.GL10;
public class GLController {
private static final int EGL_CONTEXT_CLIENT_VERSION = 0x3098;
private static final String LOGTAG = "GeckoGLController";
private FlexibleGLSurfaceView mView;
private int mGLVersion;
private boolean mSurfaceValid;
private int mWidth, mHeight;
private EGL10 mEGL;
private EGLDisplay mEGLDisplay;
private EGLConfig mEGLConfig;
private EGLContext mEGLContext;
private EGLSurface mEGLSurface;
private GL mGL;
private static final int[] CONFIG_SPEC = {
EGL10.EGL_RED_SIZE, 5,
EGL10.EGL_GREEN_SIZE, 6,
EGL10.EGL_BLUE_SIZE, 5,
EGL10.EGL_NONE
};
public GLController(FlexibleGLSurfaceView view) {
mView = view;
mGLVersion = 1;
mSurfaceValid = false;
}
public void setGLVersion(int version) {
mGLVersion = version;
}
/** You must call this on the same thread you intend to use OpenGL on. */
public void initGLContext() {
initEGLContext();
createEGLSurface();
}
public void disposeGLContext() {
if (!mEGL.eglMakeCurrent(mEGLDisplay, EGL10.EGL_NO_SURFACE, EGL10.EGL_NO_SURFACE,
EGL10.EGL_NO_CONTEXT)) {
throw new GLControllerException("EGL context could not be released!");
}
if (mEGLSurface != null) {
if (!mEGL.eglDestroySurface(mEGLDisplay, mEGLSurface)) {
throw new GLControllerException("EGL surface could not be destroyed!");
}
mEGLSurface = null;
}
if (mEGLContext == null) {
if (!mEGL.eglDestroyContext(mEGLDisplay, mEGLContext)) {
throw new GLControllerException("EGL context could not be destroyed!");
}
mGL = null;
mEGLDisplay = null;
mEGLConfig = null;
mEGLContext = null;
}
}
public GL getGL() { return mEGLContext.getGL(); }
public EGLDisplay getEGLDisplay() { return mEGLDisplay; }
public EGLConfig getEGLConfig() { return mEGLConfig; }
public EGLContext getEGLContext() { return mEGLContext; }
public EGLSurface getEGLSurface() { return mEGLSurface; }
public FlexibleGLSurfaceView getView() { return mView; }
public boolean hasSurface() {
return mEGLSurface != null;
}
public boolean swapBuffers() {
return mEGL.eglSwapBuffers(mEGLDisplay, mEGLSurface);
}
public boolean checkForLostContext() {
if (mEGL.eglGetError() != EGL11.EGL_CONTEXT_LOST) {
return false;
}
mEGLDisplay = null;
mEGLConfig = null;
mEGLContext = null;
mEGLSurface = null;
mGL = null;
return true;
}
public synchronized void waitForValidSurface() {
while (!mSurfaceValid) {
try {
wait();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
}
public synchronized int getWidth() {
return mWidth;
}
public synchronized int getHeight() {
return mHeight;
}
synchronized void surfaceCreated() {
mSurfaceValid = true;
notifyAll();
}
synchronized void surfaceDestroyed() {
mSurfaceValid = false;
notifyAll();
}
synchronized void sizeChanged(int newWidth, int newHeight) {
mWidth = newWidth;
mHeight = newHeight;
}
private void initEGLContext() {
mEGL = (EGL10)EGLContext.getEGL();
mEGLDisplay = mEGL.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY);
if (mEGLDisplay == EGL10.EGL_NO_DISPLAY) {
throw new GLControllerException("eglGetDisplay() failed");
}
int[] version = new int[2];
if (!mEGL.eglInitialize(mEGLDisplay, version)) {
throw new GLControllerException("eglInitialize() failed");
}
mEGLConfig = chooseConfig();
int[] attribList = { EGL_CONTEXT_CLIENT_VERSION, mGLVersion, EGL10.EGL_NONE };
mEGLContext = mEGL.eglCreateContext(mEGLDisplay, mEGLConfig, EGL10.EGL_NO_CONTEXT,
attribList);
if (mEGLContext == null || mEGLContext == EGL10.EGL_NO_CONTEXT) {
throw new GLControllerException("createContext() failed");
}
}
private EGLConfig chooseConfig() {
int[] numConfigs = new int[1];
if (!mEGL.eglChooseConfig(mEGLDisplay, CONFIG_SPEC, null, 0, numConfigs) ||
numConfigs[0] <= 0) {
throw new GLControllerException("No available EGL configurations");
}
EGLConfig[] configs = new EGLConfig[numConfigs[0]];
if (!mEGL.eglChooseConfig(mEGLDisplay, CONFIG_SPEC, configs, numConfigs[0], numConfigs)) {
throw new GLControllerException("No EGL configuration for that specification");
}
// Select the first 565 RGB configuration.
int[] red = new int[1], green = new int[1], blue = new int[1];
for (EGLConfig config : configs) {
mEGL.eglGetConfigAttrib(mEGLDisplay, config, EGL10.EGL_RED_SIZE, red);
mEGL.eglGetConfigAttrib(mEGLDisplay, config, EGL10.EGL_GREEN_SIZE, green);
mEGL.eglGetConfigAttrib(mEGLDisplay, config, EGL10.EGL_BLUE_SIZE, blue);
if (red[0] == 5 && green[0] == 6 && blue[0] == 5) {
return config;
}
}
throw new GLControllerException("No suitable EGL configuration found");
}
private void createEGLSurface() {
SurfaceHolder surfaceHolder = mView.getHolder();
mEGLSurface = mEGL.eglCreateWindowSurface(mEGLDisplay, mEGLConfig, surfaceHolder, null);
if (mEGLSurface == null || mEGLSurface == EGL10.EGL_NO_SURFACE) {
throw new GLControllerException("EGL window surface could not be created!");
}
if (!mEGL.eglMakeCurrent(mEGLDisplay, mEGLSurface, mEGLSurface, mEGLContext)) {
throw new GLControllerException("EGL surface could not be made into the current " +
"surface!");
}
mGL = mEGLContext.getGL();
if (mView.getRenderer() != null) {
mView.getRenderer().onSurfaceCreated((GL10)mGL, mEGLConfig);
mView.getRenderer().onSurfaceChanged((GL10)mGL, mView.getWidth(), mView.getHeight());
}
}
public static class GLControllerException extends RuntimeException {
public static final long serialVersionUID = 1L;
GLControllerException(String e) {
super(e);
}
}
}