[Mesa-dev] COMPSIZE function in OpenGL XML registry

[Jose Fonseca]

I'm not sure what you are trying to accomplish.

if you're doing some sort of serialization of OpenGL calls other than 
GLX, then it might be worthwhile to look at

   https://github.com/apitrace/apitrace/blob/master/specs/glapi.py
   https://github.com/apitrace/apitrace/blob/master/helpers/glsize.hpp

Jose

On 10/06/15 23:05, Shervin Sharifi wrote:
> Thanks Ian.
> If I want to implement the actual CompSize function, how should I figure
> out the details?
>
> Thanks,
>     Shervin
>
> On Wed, Jun 10, 2015 at 2:56 PM, Ian Romanick <idr at freedesktop.org
> <mailto:idr at freedesktop.org>> wrote:
>
>     On 06/10/2015 11:25 AM, Shervin Sharifi wrote:
>     > Hi,
>     >
>     >  This may not be the right forum to ask this, but I didn't know of a
>     > better forum, so I thought I can ask here.
>     >
>     >  I'm new to OpenGL. I am looking at XML registry for OpenGL and there
>     > are some parameters with attributes containing a function COMPSIZE (I've
>     > pasted an example below).
>     >  I tried to find information on what the COMPSIZE function is, where/how
>     > it is used, etc, but couldn't find documentation or credible information
>     > on the Internet.
>     >  Any information or pointer to that would be really helpful.
>
>     It's a signal to code generation scripts that the size of the data
>     referenced by the "pointer" parameter depends on the values of "type"
>     and "stride".  For example, GLX protocol code uses this to know how much
>     image data to send to the server for glTexImage2D.
>
>     >  Thanks,
>     >     Shervin
>     >
>     >
>     >
>     > This example is from gl.xml in the OpenGL registry:
>     >
>     >         <command>
>     >             <proto>void <name>glBinormalPointerEXT</name></proto>
>     >             <param group="BinormalPointerTypeEXT"><ptype>GLenum</ptype>
>     > <name>type</name></param>
>     >             <param><ptype>GLsizei</ptype> <name>stride</name></param>
>     >             <param len="COMPSIZE(type,stride)">const void
>     > *<name>pointer</name></param>
>     >         </command>
>     >
>     >
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