GLARE is a 3D rendering engine for Android devices supporting OpenGL ES 3 written in Java. It is completely written from scratch and does not use any external libraries. It currently displays a cube with a tile texture that can be easily swapped out in code. The current APK of the demo can be downloaded here!
GLARE allows the user to render 3D meshes as well as 2D UI elements:
- 3D objects have materials consisting of an albedo map or a color, a normal map, and a roughness map
- Point and ambient lights illuminate the scene using Blinn-Phong lighting
- 2D UI elements have materials that have either a color or a texture
- Currently does not support text rendering
- Custom event system wraps window and user input events and forwards them to the correct layer
- Layer system blocks user input if its already handled
The inertia system allows the user to rotate the cube and zoom the camera but can easily be attached to any property of any object in code.
- Inertia system allows custom behavior after the user moved an object
- The length of the inertia as well as the form can be customized by using different mathematical functions
- Inertia can be added to 3D objects as well as UI elements or camera controls