![]() ![]() There is a special graphics language known as OpenGL Shading Language(GLSL) in which a shader is written. Shader, in short, is a small program that is developed by you only that lives in the GPU. Lastly, the fragments are submitted to various tests such as :įrom these six stages, two stages are being controlled by programs which are called Shaders. When primitive has been rasterized, then color or texture is applied to the geometry. Each of these smaller units is then known as Fragments. Then Primitives are broken down into chunks of smaller units and corresponding to that of pixels in the framebuffer. The rendering pipeline process of OpenGL in Android consists of six stages as below : The main tasks for which Rendering Pipeline is responsible are the conversion of the vertices to the right coordinate system, assembling of vertices of a character, application of color or texture and displaying of the character on the default framebuffer, which is the screen. Once it is in the GPU, these data would go through what is known as the OpenGL Rendering Pipeline. The second example is Texture that can store image data.ĭata such as vertices, normals, and UV coordinates which represent the characteristics of mesh, are loaded into a Vertex Buffer Object and then sent to the GPU for processing. For example, a Vertex Buffer Object can store vertices of a character. There exist several types of OpenGL Objects. onSurfaceChanged(): This method is called when the GLSurfaceView geometry changes(size, orientation etc). ![]() onDrawFrame(): This method is called during each redraw of the GLSurfaceView.onSurfaceCreated(): This method is called during the creation of the GLSurfaceView.You need to implement the following methods for GLSurfaceView.Renderer interface implementation: The implementation of this interface should be provided as a separate class attached to the GLSurfaceView instance using tRenderer(). The GLSurfaceView.The renderer interface contains methods that are required for drawing graphics in a GLSurfaceView. ![]()
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