README.md

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Alex Commit Client Upload Part 2 19/10/2026 00:06

1# ANGLE GLES 1.0 Headers

The GLES 1.0 headers ANGLE uses are generated using the Khronos tools but modified to include function pointer types and function prototype guards.

5### Regenerating gl.h

1. Install **Python 3** (not 2) with the **lxml** addon. You can do this using `pip install lxml` from your Python's Scripts folder.

81. Clone [https://github.com/KhronosGroup/OpenGL-Registry.git](https://github.com/KhronosGroup/OpenGL-Registry.git).

91. Edit `OpenGL-Registry/xml/genheaders.py`:

11 1. Look for the section titled `# GLES 1.x API + mandatory extensions - GLES/gl.h (no function pointers)`

   1. Change `prefixText        = prefixStrings + gles1PlatformStrings + genDateCommentString,` to `prefixText        = prefixStrings + gles1PlatformStrings + apiEntryPrefixStrings + genDateCommentString,`

13 1. Change `genFuncPointers = False,` to `genFuncPointers = True,`

14 1. Change `protectProto = False,` to `protectProto = 'nonzero',`

15 1. Change `protectProtoStr = 'GL_GLEXT_PROTOTYPES',` to `protectProtoStr = 'GL_GLES_PROTOTYPES',`

171. Set your working directory to `OpenGL-Registry/xml/`.

181. Run `python genheaders.py ../api/GLES/gl.h`

191. The generated header will now be in `OpenGL-Registry/api/GLES/gl.h`. You can copy the header over to this folder.

201. Also update `scripts/gl.xml` with the latest version from `OpenGL-Registry/xml/`.