private void doShowPreviewFrame() {
mInputSurfaceTexture.updateTexImage();
mInputSurfaceTexture.getTransformMatrix(mTransformMatrix);
MosaicRenderer.setWarping(false);
// Call preprocess to render it to low-res and high-res RGB textures.
MosaicRenderer.preprocess(mTransformMatrix);
MosaicRenderer.updateMatrix();
draw();
mEgl.eglSwapBuffers(mEglDisplay, mEglSurface);
}
private void doAlignFrame() {
mInputSurfaceTexture.updateTexImage();
mInputSurfaceTexture.getTransformMatrix(mTransformMatrix);
MosaicRenderer.setWarping(true);
// Call preprocess to render it to low-res and high-res RGB textures.
MosaicRenderer.preprocess(mTransformMatrix);
// Now, transfer the textures from GPU to CPU memory for processing
MosaicRenderer.transferGPUtoCPU();
MosaicRenderer.updateMatrix();
draw();
mEgl.eglSwapBuffers(mEglDisplay, mEglSurface);
}
private void doInitGL() {
// These are copied from GLSurfaceView
mEgl = (EGL10) EGLContext.getEGL();
mEglDisplay = mEgl.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY);
if (mEglDisplay == EGL10.EGL_NO_DISPLAY) {
throw new RuntimeException("eglGetDisplay failed");
}
int[] version = new int[2];
if (!mEgl.eglInitialize(mEglDisplay, version)) {
throw new RuntimeException("eglInitialize failed");
} else {
Log.v(TAG, "EGL version: " + version[0] + '.' + version[1]);
}
int[] attribList = {EGL_CONTEXT_CLIENT_VERSION, 2, EGL10.EGL_NONE};
mEglConfig = chooseConfig(mEgl, mEglDisplay);
mEglContext =
mEgl.eglCreateContext(mEglDisplay, mEglConfig, EGL10.EGL_NO_CONTEXT, attribList);
if (mEglContext == null || mEglContext == EGL10.EGL_NO_CONTEXT) {
throw new RuntimeException("failed to createContext");
}
mEglSurface =
mEgl.eglCreateWindowSurface(mEglDisplay, mEglConfig, mMosaicOutputSurfaceTexture, null);
if (mEglSurface == null || mEglSurface == EGL10.EGL_NO_SURFACE) {
throw new RuntimeException("failed to createWindowSurface");
}
if (!mEgl.eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface, mEglContext)) {
throw new RuntimeException("failed to eglMakeCurrent");
}
mGl = (GL10) mEglContext.getGL();
mInputSurfaceTexture = new SurfaceTexture(MosaicRenderer.init());
MosaicRenderer.reset(mWidth, mHeight, mIsLandscape);
}
private void draw() {
MosaicRenderer.step();
}
