AntiAlias

This shows how to select anti-aliasing levels and the effect of different levels of anti-aliasing:

a shader renders a simple triangle
some text is written to the screen
the FPS count is output on the terminal window.

Note

With only approximately 2% performance drop, 4x anti-aliasing is nearly free on Mali hardware and is adequate for most applications.
Significantly higher quality results from 16x anti-aliasing, but it has over 50% drop in performance.
Because of the benefit with almost no cost, ARM recommends using 4x anti-aliasing rather than the default of no anti-aliasing.

Cube

This displays a spinning cube on the screen. The sample application uses matrix functions, renders fonts, and writes the FPS value to the terminal.

EGLPreserve

This shows the change in behavior of eglSwapBuffers is caused by changing the EGL_SWAP_BEHAVIOR attribute to EGL_BUFFER_PRESERVED.

ETCAtlasAlpha

This uses an alpha channel that was converted to a visible greyscale image. The alpha image is concatenated onto the original texture.

ETCCompressedAlpha

This uses an alpha channel that is delivered as a second packed texture.

ETCUncompressedAlpha

This uses an alpha channel that is provided as a raw 8-bit single channel image.

Uncompressed alpha takes up more space than compressed alpha, but is more flexible and enables alpha and color information to be mixed.

ETCMipmap

This shows how to load and display ETC format textures with Mipmaps.

FrameBufferObject

This shows the render-to-texture feature of OpenGL ES 2.0. A colored spinning cube is rendered to a frame buffer, which is then attached as a texture on the faces of another spinning cube.

ListEGLConfigs

This shows how to list the available EGLConfig.

RotoZoom

This shows how to implement a classic demo effect by rotating and zooming a texture. It shows how to increase the speed of the effect by moving the work from the fragment shader to the vertex shader and CPU.

Template

This is an empty template that you can use to start developing a new application.

The code is structured to contain everything that is required to compile and run, but nothing is rendered.

Triangle

This shows how to draw a simple colored triangle on the screen using a programmable shader.

RenderToTextureJava

This shows how achieve a rendering to a texture effect using only the Java OpenGL ES mappings. The sample renders a spinning cube to a texture and then uses that texture on another spinning cube.

SpinningCubeJava

This shows how render a spinning cube using only the Java OpenGL ES mappings.

TemplateJava

This is an empty template that you can use to start developing a new application only the Java OpenGL ES mappings.

Terrain

This sample will show you how to efficiently implement geometry clipmaps using OpenGL ES 3.0. The sample makes use of 2D texture arrays as well as instancing to efficiently render an infinitely large terrain. The terrain is asynchronously uploaded to the GPU using pixel buffer objects.