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List:       mesa3d-dev
Subject:    Re: [Mesa3d-dev] Re: Proposal to re-work GL dispatch
From:       Ian Romanick <idr () us ! ibm ! com>
Date:       2005-06-29 15:44:02
Message-ID: 42C2C1C2.50304 () us ! ibm ! com
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Philippe Houdoin wrote:
>>Ian Romanick wrote:
>>
>>>I've attached a patch that does this.  A script creates a header file
>>>containing tables of functions and extensions.  Each driver '#define
>>>need_GL_foo' for each extension that the driver can export and calls
>>>either driInitExtensions or driInitSingleExtension to enable it.
> 
> Does this new GL extensions dispatching specific only to DRI drivers, or can it
> be generalized to non-DRI drivers?
> AFAIK, src/mesa/glapi/* stuffs was drivers agnostic, right?
> 
> Can't the extension_helper.h designed and generated to be shared from
> src/mesa/drivers/common/. instead DRI's src/mesa/drivers/dri/common/.

I consider stand-alone Mesa to be a different beast than the DRI setup.
 I think it is completely reasonable for stand-alone Mesa to continue
exporting whatever entry-points it supports.  This means that
stand-alone Mesa wouldn't need _glapi_add_dispatch (the new function) or
_glapi_add_entrypoint (the old function) at all.

If we restrict the DRI libGL to only the symbols required by the Linux
OpenGL ABI, stand-alone Mesa would need different API files (e.g.,
glapitemp.h, etc.).  Perhaps it could be handled by #ifdef's in the
existing files.  We'll have to cross that bridge when we get to it.
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