[Mesa-dev] [RFC] GLX_MESA_query_renderer
idr at freedesktop.org
Sun Mar 3 17:25:06 PST 2013
On 03/02/2013 07:00 AM, Christoph Bumiller wrote:
> On 02.03.2013 00:14, Ian Romanick wrote:
>> Since last September I've been gradually working on an extension to
>> let applications query information about the renderer before (and
>> after) creating a context. I've talked it over with a few ISVs and
>> with various other folks. I also gathered some input from folks at
>> FOSDEM after my talk there. After going through several iterations of
>> review and modification, I think it's finally ready for wider input.
>> Some of the earliest feedback that I got was that many ISVs really
>> like the interface that fills this niche on Mac OS. It's a pretty
>> nice API, and this API is modeled after it. There are, however, some
>> I've pasted the spec below so that people can provide in-line
>> comments. I've also pushed a branch with the spec and the initial
>> implementation. There are a few things potentially provided by the
>> spec that are not included in the initial implementation. I've
>> implemented a couple unit tests, and I have some piglit tests
>> I'm mostly looking for input on the specification itself. Once this
>> is good, I will also add EGL support.
>> GLX renderer attribute number description
>> of values
>> ---------------------- --------- -----------
>> GLX_RENDERER_VENDOR_ID_MESA 1 PCI ID of the device vendor
>> GLX_RENDERER_DEVICE_ID_MESA 1 PCI ID of the device
>> 5) How can applications tell the difference between different
>> renderers for the same device? For example, whether the renderer
>> is the
>> open-source driver or the closed-source driver.
>> RESOLVED. Assuming this extension is ever implemented outside
>> applications can query GLX_RENDERER_VENDOR_ID_MESA from
>> glXQueryRendererStringMESA. This will almost certainly return
>> different strings for open-source and closed-source drivers.
> Why would the "PCI ID of the device vendor" change with the driver ?
Hopefully the PCI ID wouldn't change, but the resolution of this issue
only applies to the string version of the query.
GLX renderer attribute description
GLX_RENDERER_VENDOR_ID_MESA Name of the renderer provider. This may
differ from the vendor name of the
GLX_RENDERER_DEVICE_ID_MESA Name of the renderer. This may
the name of the underlying hardware
for a software renderer).
More information about the mesa-dev