What is onSurfaceChanged?

What is onSurfaceChanged?

onSurfaceChanged(GL10 gl, int width, int height) Called when the surface changed size. abstract void. onSurfaceCreated(GL10 gl, EGLConfig config) Called when the surface is created or recreated.

What is GL surface view?

A GLSurfaceView provides the following features: Manages a surface, which is a special piece of memory that can be composited into the Android view system. Manages an EGL display, which enables OpenGL to render into a surface….

Nested classes
interface GLSurfaceView.Renderer A generic renderer interface.

What is a surface view?

SurfaceView provides a dedicated drawing surface embedded inside of a view hierarchy. You can control the format of this surface and, if you like, its size; the SurfaceView takes care of placing the surface at the correct location on the screen.

How does OpenGL es work?

In the ES 1.0 API, you apply projection and camera view by creating each matrix and then adding them to the OpenGL environment. Projection matrix – Create a projection matrix using the geometry of the device screen in order to recalculate object coordinates so they are drawn with correct proportions.

What is eglMakeCurrent?

eglMakeCurrent binds context to the current rendering thread AND TO the draw and read surfaces. draw is used for all GL operations except for any pixel data read back ( glReadPixels , glCopyTexImage2D , and glCopyTexSubImage2D ), which is taken from the frame buffer values of read .

Can I update OpenGL version Android?

The OpenGL drivers on Android are not user upgradable.

What OpenGL do I have?

Open OpenGL Extensions Viewer. In the Tasks menu, click Summary. Example: OpenGL version for the GPU is 4.6 and lower.

What is FrameLayout?

FrameLayout is designed to block out an area on the screen to display a single item. Generally, FrameLayout should be used to hold a single child view, because it can be difficult to organize child views in a way that’s scalable to different screen sizes without the children overlapping each other.

What is SetContentView?

SetContentView is used to fill the window with the UI provided from layout file incase of setContentView(R. layout. somae_file). Here layoutfile is inflated to view and added to the Activity context(Window).

What is the difference between OpenGL and OpenGL ES?

The main difference between the two is that OpenGL ES is made for embedded systems like smartphones, while OpenGL is the one on desktops. On the coding level, OpenGL ES does not support fixed-function functions like glBegin/glEnd etc… OpenGL can support fixed-function pipeline (using a compatibility profile).

How do I know my OpenGL version?

Procedure. Follow the instructions provided to check the type of graphics card installed on the system and the version of OpenGL running. Check the graphics card type (Windows): Click Start, type dxdiag, and press Enter to access a diagnostic tool listing the graphics card information.

Does OpenGL use GPU?

OpenGL (Open Graphics Library) is a cross-language, cross-platform application programming interface (API) for rendering 2D and 3D vector graphics. The API is typically used to interact with a graphics processing unit (GPU), to achieve hardware-accelerated rendering.

How many Childs FrameLayout can have?

What is the maximum number of Children Views inside a FrameLayout in Android? There’s no limit indicated on how many children that a ViewGroup can have on the docs.

What is FragmentContainerView?

FragmentContainerView is a customized Layout designed specifically for Fragments. It extends FrameLayout , so it can reliably handle Fragment Transactions, and it also has additional features to coordinate with fragment behavior.

Is setContentView necessary?

No it is not necessary to call setContentView() method.