public void initEGL() {
mEGL =
(EGL10)
GLDebugHelper.wrap(
EGLContext.getEGL(),
GLDebugHelper.CONFIG_CHECK_GL_ERROR | GLDebugHelper.CONFIG_CHECK_THREAD,
null);
mGLDisplay = mEGL.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY);
int[] curGLVersion = new int[2];
mEGL.eglInitialize(mGLDisplay, curGLVersion);
Log.i("GL", "GL version = " + curGLVersion[0] + "." + curGLVersion[1]);
EGLConfig[] configs = new EGLConfig[1];
int[] num_config = new int[1];
mEGL.eglChooseConfig(mGLDisplay, mConfigSpec, configs, 1, num_config);
mGLConfig = configs[0];
mGLSurface = mEGL.eglCreateWindowSurface(mGLDisplay, mGLConfig, sv.getHolder(), null);
mGLContext = mEGL.eglCreateContext(mGLDisplay, mGLConfig, EGL10.EGL_NO_CONTEXT, null);
mEGL.eglMakeCurrent(mGLDisplay, mGLSurface, mGLSurface, mGLContext);
mGL =
(GL10)
GLDebugHelper.wrap(
mGLContext.getGL(),
GLDebugHelper.CONFIG_CHECK_GL_ERROR
| GLDebugHelper.CONFIG_CHECK_THREAD
| GLDebugHelper.CONFIG_LOG_ARGUMENT_NAMES,
null);
}
/* (non-Javadoc)
* @see android.opengl.GLSurfaceView.Renderer#onDrawFrame(javax.microedition.khronos.opengles.GL10)
*/
public final void onDrawFrame(GL10 gl) {
gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
if (DEBUG) gl = (GL10) GLDebugHelper.wrap(gl, GLDebugHelper.CONFIG_CHECK_GL_ERROR, log);
setupDraw2D(gl);
gl.glDisable(GL10.GL_DEPTH_TEST);
gl.glEnable(GL10.GL_TEXTURE_2D);
gl.glDisable(GL10.GL_LIGHTING);
gl.glBindTexture(GL10.GL_TEXTURE_2D, textureName);
// load new preview frame as a texture, if needed
if (frameEnqueued) {
frameLock.lock();
if (!isTextureInitialized) {
initializeTexture(gl);
} else {
// just update the image
// can we just update a portion(non power of two)?...seems to work
gl.glTexSubImage2D(
GL10.GL_TEXTURE_2D,
0,
0,
0,
previewFrameWidth,
previewFrameHeight,
mode,
GL10.GL_UNSIGNED_BYTE,
frameData);
}
frameLock.unlock();
gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_LINEAR);
gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR);
frameEnqueued = false;
}
gl.glColor4f(1, 1, 1, 1f);
// draw camera preview frame:
gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, textureBuffer);
gl.glVertexPointer(3, GL10.GL_FLOAT, 0, squareBuffer);
// draw camera square
gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, 4);
gl.glDisableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);
if (customRenderer != null) customRenderer.setupEnv(gl);
else {
gl.glEnable(GL10.GL_LIGHTING);
gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_AMBIENT, ambientLightBuffer);
gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_DIFFUSE, diffuseLightBuffer);
gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_SPECULAR, specularLightBuffer);
gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_POSITION, lightPositionBuffer);
gl.glEnable(GL10.GL_LIGHT0);
}
markerInfo.draw(gl);
if (customRenderer != null) customRenderer.draw(gl);
// take a screenshot, if desired
if (takeScreenshot) {
// http://www.anddev.org/how_to_get_opengl_screenshot__useful_programing_hint-t829.html
takeScreenshot = false;
int[] tmp = new int[screenHeight * screenWidth];
int[] screenshot = new int[screenHeight * screenWidth];
Buffer screenshotBuffer = IntBuffer.wrap(tmp);
screenshotBuffer.position(0);
gl.glReadPixels(
0, 0, screenWidth, screenHeight, GL10.GL_RGBA, GL10.GL_UNSIGNED_BYTE, screenshotBuffer);
for (int i = 0;
i < screenHeight;
i++) { // remember, that OpenGL bitmap is incompatible with Android bitmap
// and so, some correction need.
for (int j = 0; j < screenWidth; j++) {
int pix = tmp[i * screenWidth + j];
int pb = (pix >> 16) & 0xff;
int pr = (pix << 16) & 0x00ff0000;
int pix1 = (pix & 0xff00ff00) | pr | pb;
screenshot[(screenHeight - i - 1) * screenWidth + j] = pix1;
}
}
this.screenshot = Bitmap.createBitmap(screenshot, screenWidth, screenHeight, Config.RGB_565);
screenshotTaken = true;
// wake up the waiting method
synchronized (screenshotMonitor) {
screenshotMonitor.notifyAll();
}
}
}