[Mesa-dev] EGL and glClear(): Nothing is drawn on screen

[Eric Anholt]

Ralf Jung <post at ralfj.de> writes:

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> Hi,
>
>> If you were testing with front buffer rendering, GLES doesn't 
>> support front buffer rendering (because nobody should ever use
>> it). I recommend using a debug build of mesa when developing GL 
>> applications, since it dumps GL error messages to the console by 
>> default.
>> 
>> If it was in the double-buffered path, then I don't have any other 
>> info.
> I am not using GLES, but normal OpenGL through EGL. And I am pretty sure
> it's double-buffered - as far as I understood it, that's the default,
> and I did not attempt to override it in any way (like calling
> glDrawBuffer).

Oh, our EGL implementation is not prepared for frontbuffer rendering at
all.
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