[Mesa-dev] Broadcom VC4 project

Stéphane Marchesin stephane.marchesin at gmail.com
Wed Jun 18 11:17:53 PDT 2014

On Wed, Jun 18, 2014 at 10:47 AM, Emil Velikov <emil.l.velikov at gmail.com> wrote:
> On 18/06/14 08:28, Eric Anholt wrote:
>> To those who have been curious what I was up to: I wasn't sure when I
>> could announce my new projecct, I just got the ack day before yesterday,
>> and I've been a little busy.
>> I'm working toward building a Mesa driver for Broadcom VC4 (aka
>> Raspberry Pi).  At the moment I'm still bringing up the DRM side of
>> things, but I hope to be doing bits of userspace in the next few days.
>> Current status is I have a skeleton DRM KMS driver that's going to talk
>> to the firmware for modesetting, and now I'm starting on the execution
>> side of things.
>> I'm probably going to start out doing a gallium driver for simplicity,
>> to avoid having to do all the DRI crap we've got in brw_context.c and
>> texture miptree validation and getting user data into VBOs and all that
>> other almost-boilerplate.  Long term I may end up switching to classic
>> so I can get swrast fallbacks and the ability to implement single-copy
>> manually-tiled TexImage uploads like.  For now I want to get to drawing
>> triangles as soon as I can.
> Hi Eric,
> IIRC the i915 driver already uses softpipe/llvmpipe as a fallback for some
> operations.

It doesn't, that experiment went away a long time ago. Well, unless
you consider "the vertex pipeline" as one of those operations, in
which case yes it's always using a fallback to llvmpipe :)


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