glsurfaceview

OpenGL：对比canvas绘制，直接使用GPU绘制，是最高效的方法。GPU来分担CPU的工作，从而提高效率。 先添加权限 1，要使用opengl要先初始化他的载体，GLsurfaceview，可以配置内容渲染是在surfaceview的特定区域完成。实质上是会自己创建一个window，没有动画或者变形效果 1）onCreate{ gl = new GLSurfaceView(); setContentView(gl); } 2）“configurationInfo.reqGlEsVersion >= 0x20000” // 检测opengl是否支持2.0 3）通过setGLContextClientVersion()配置surfaceview的视图； 4）通过setRenderer()来传入一个自定义的Renderer类，当surfaceview创建或者发生改变以及绘制新一帧的时候，渲染器都会被GLSurfaceView调用 5）处理Activity的生命周期事件，GLSurfaceView要协同好Activity生命周期，防止内存泄漏 6）创建Renderer类 GLSurfaceView会新开启一个线程去绘制，最后会在ui线程调用，通过queneEvent()传递Runnable对象给子线程，再通过runonuiThread()切换到主线程调用

My goal is to use OpenGL ES 2.0 with Google Maps. I would like to create an app that follows the user as they are traveling from point A to point B. I realize that this can be done using Google Maps addPolyline to draw a line, but I want to use OpenGL instead in order to show overlap of paths. I'm currently receiving an error which is due to incorrectly setting up the GLSurfaceView. My code in the GoogleMapsTracker class is as follows: private MapView mapView; private GoogleMap map; private GLSurfaceView mGLSurfaceView; /** * Use this factory method to create a new instance of * this fragment

I started an Android OpenGL application and I have the following classes: class A extends Activity class B extends GlSurfaceView implements Renderer When class A's onCreate is called, it creates an object of type class B and calls: setContentView(Bobject) So far it works and I spent a few days on it. Now I wanted to add buttons to my application and found the SurfaceViewOverlay example. That uses some XML to create a view hierarchy. I wanted to create something very similar to I simply cut and paste the XML code: <android.opengl.GLSurfaceView android:id="@+id/glsurfaceview" android:layout

I have an glSurfaceView that looks like this: public class GLLayer extends GLSurfaceView implements SurfaceHolder.Callback, Camera.PreviewCallback, Renderer { private Context context; private Circle cRing; private CompassNeedle cNeedle; private MarkerNorth mNorth; private MarkerEast mEast; private MarkerSouth mSouth; private MarkerWest mWest; private MarkerSouthWest mSWest; private MarkerSouthEast mSEast; private MarkerNorthWest mNWest; private MarkerNorthEast mNEast; private MarkerWest mGod; private MarkerCustom userTag; ArrayList <MarkerCustom> locationTags; private PhoneOrientation phoneOri

in Android NDK, is it possible to make OpenGL ES 1.1 work with the typical java-side GLSurfaceView pattern (overriding methods from GLSurfaceView.Renderer onDrawFrame, onSurfaceCreated, etc.) while using in the C++ side the frame, color and depth buffers, and VBO? I am trying to create them using this: void ES1Renderer::on_surface_created() { // Create default framebuffer object. The backing will be allocated for the current layer in -resizeFromLayer glGenFramebuffersOES(1, &defaultFramebuffer); glBindFramebufferOES(GL_FRAMEBUFFER_OES, defaultFramebuffer); // Create color renderbuffer object.

So I have a GLSurfaceView in my app being rendered by a GLSurfaceView.Renderer and using JPCt as library. The surface is in an invisible RelativeLayout (visibility: gone). When I change the visibility to "visible" then back to "gone", the layout shows and hides as expected, but the GLSurfaceView don't, it just shows and won't hide, even though I can click on items that are now "behind" it. It seems like some graphical buffer issue, but I didn't find a way to get this to work... any ideas? Thanks! rkapl SurfaceView (and GLSurfaceView by extension) are interesting beasts in Android. Citation