Screen Tutorials

Screen tutorials aim to help you understand how to use the API in your own applications by providing step-by-step guides.

Tutorial: Draw and perform vsync operations using windows
This simple sample application uses three windows to illustrate a basic drawing and vsync operation. The sample provides reusable functions that are called in the application to create and initialize windows. The sample also includes a complete event loop that you can use in your own application.
Tutorial: Draw and perform vsync operations using blits, pixmaps, and buffers
This section describes how you can create the familiar hourglass and bar example using pixmaps, buffers, and blits.
Tutorial: Write an application using OpenGL ES
This simple sample application uses a native window to create an EGL on-screen rendering surface. This surface is the target of the OpenGL ES 1.X rendering.
Tutorial: Screenshots
Screen screenshots are pixels read from a source and then copied into a buffer. You can then manipulate the buffer as required; it can be simply written to a file or used in other windows or displays.
Tutorial: Rendering text with FreeType and OpenGL ES
This is sample application that uses a native window to create an EGL on-screen rendering surface. Text is rendered on this surface by using the FreeType library with OpenGL.
Tutorial: Screen events
This is a sample application that injects a screen event into a specified display.