Hello, when migrating my app from desktop GL to GLES2 I used the GLES SDK from here: http://developer.amd.com/tools-and-sdks/graphics-development/amd-opengl-es-sdk/ and encountered what appears to be a driver/hardware bug.
When running the sample provided, there are two white bars to the bottom and to the right of the screen as seen here :
OS: Windows 7 64bit
AMD Radeon HD 6450
Driver Packaging Version: 15.201.1151.1010-151118a-296614E
Catalyst Version: 15.11.1
OpenGL Version: 8.01.01.1500
Disabling desktop composition under compatibility settings solves the issue.