[Mesa-dev] OSMesa Help

[Matt Turner]

On Tue, Jul 9, 2013 at 10:20 PM, Andy Li <lilapkiu at hotmail.com> wrote:
> Hello everyone,
>
>
> I have some questions regarding to OSMesa.
>
> I am currently working on a project which I have to use Mesa on an embedded
> system.
>
> My current goal is to port the base functions over to the embedded system,
> so that I can draw a line on a provided VGA screen.
>
> Since the embedded system I am using does not contain a GPU, therefore I
> have decided to use OSMesa for rendering process.
>
> I am wondering if there are any documentations/ specifications for OSMesa?
>
> Anyone know which are the base functions that OSMesa used for the rendering
> process?
>
> I have looked into src/mesa/swrast/s_lines.c and s_drawpix.c and trying to
> figure out how the code works, am I in the right direction?
>
> Moreover, for example, if I found a drawpix() function, how do I know if
> OSMesa actually used this function during rendering process? Is there any
> tool/debugger I can use to confirm my findings?

I suspect simply using one of the software drivers would be better.
Maybe you'll want to run this program on a real GPU some day, and then
it will run unmodified.