1*8975f5c5SAndroid Build Coastguard Worker# ANGLE GLES 1.0 Headers 2*8975f5c5SAndroid Build Coastguard Worker 3*8975f5c5SAndroid Build Coastguard WorkerThe GLES 1.0 headers ANGLE uses are generated using the Khronos tools but modified to include function pointer types and function prototype guards. 4*8975f5c5SAndroid Build Coastguard Worker 5*8975f5c5SAndroid Build Coastguard Worker### Regenerating gl.h 6*8975f5c5SAndroid Build Coastguard Worker 7*8975f5c5SAndroid Build Coastguard Worker1. Install **Python 3** (not 2) with the **lxml** addon. You can do this using `pip install lxml` from your Python's Scripts folder. 8*8975f5c5SAndroid Build Coastguard Worker1. Clone [https://github.com/KhronosGroup/OpenGL-Registry.git](https://github.com/KhronosGroup/OpenGL-Registry.git). 9*8975f5c5SAndroid Build Coastguard Worker1. Edit `OpenGL-Registry/xml/genheaders.py`: 10*8975f5c5SAndroid Build Coastguard Worker 11*8975f5c5SAndroid Build Coastguard Worker 1. Look for the section titled `# GLES 1.x API + mandatory extensions - GLES/gl.h (no function pointers)` 12*8975f5c5SAndroid Build Coastguard Worker 1. Change `prefixText = prefixStrings + gles1PlatformStrings + genDateCommentString,` to `prefixText = prefixStrings + gles1PlatformStrings + apiEntryPrefixStrings + genDateCommentString,` 13*8975f5c5SAndroid Build Coastguard Worker 1. Change `genFuncPointers = False,` to `genFuncPointers = True,` 14*8975f5c5SAndroid Build Coastguard Worker 1. Change `protectProto = False,` to `protectProto = 'nonzero',` 15*8975f5c5SAndroid Build Coastguard Worker 1. Change `protectProtoStr = 'GL_GLEXT_PROTOTYPES',` to `protectProtoStr = 'GL_GLES_PROTOTYPES',` 16*8975f5c5SAndroid Build Coastguard Worker 17*8975f5c5SAndroid Build Coastguard Worker1. Set your working directory to `OpenGL-Registry/xml/`. 18*8975f5c5SAndroid Build Coastguard Worker1. Run `python genheaders.py ../api/GLES/gl.h` 19*8975f5c5SAndroid Build Coastguard Worker1. The generated header will now be in `OpenGL-Registry/api/GLES/gl.h`. You can copy the header over to this folder. 20*8975f5c5SAndroid Build Coastguard Worker1. Also update `scripts/gl.xml` with the latest version from `OpenGL-Registry/xml/`. 21