For some reason, we started with headings for some of these, and then
switched to definition lists midway though.
Let's stick with the definition lists, as that looks a bit more tidy.
Reviewed-by: Eric Engestrom <eric@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19460>
While we're at it, also spell the code-names in allcaps, like NVIDIA
does. One exception is Fermi, which is spelled like a proper noun.
Reviewed-by: Yonggang Luo <luoyonggang@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19297>
The two different swrast drivers we have at the moment are called
LLVMpipe and Softpipe. Let's name the latter instead of the generic
SWRast term that we use to cover *either* of the two.
Reviewed-by: Yonggang Luo <luoyonggang@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19297>
We can provide better guidance on when to (un-)set this given that
everyone's on NIR now.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16539>
This CAP only concerns mapping of buffers, not textures. For buffers,
etnaviv does not seem to use any staging resources. In neither case does
etnaviv use explicit syncs or flushes, so persistent/coherent mapping
should come as the implicit default and the cap should be almost free.
Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Reviewed-by: Emma Anholt <emma@anholt.net>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19392>
It's a software rasterizer, all buffers are necessarily persistent and
coherent. There are no staging buffers in transfer_map and no sync/flush
operations, so this is trivial.
Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Reviewed-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19392>
After a great deal of spec lawyering in #dri-devel, I am convinced this
is probably okay for the same reasons as v3d and freedreno. The batch
reordering and flush deferral optimizations are seemingly still ok. The
requirement that writes are visible "immediately" in the spec actually
means "in the subsequent [OpenGL] command" for the CPU -> GPU direction,
which avoids pitfalls where PERSISTENT|COHERENT could be used as a
"doorbell". With that understanding, the extension doesn't actually
require anything special for tilers other than coherency at GPU submit
boundaries, which is true for any driver that does not use a sync ioctl.
After this commit, the remaining drivers that don't set the CAP are
d3d12, softpipe, etnaviv, and i915g. I am unsure about d3d12, but the
latter 3 could probbaly enable it trivially for the same reason.
v2: Don't use copy_resource path for persistent mappings (Emma). Emma
explained on GitLab:
I don't think you should have the copy_resource path taken for
PIPE_RESOURCE_FLAG_MAP_PERSISTENT BOs. Imagine the user has a
general-purpose BO they're streaming stuff into and doing draws that
they keep persistently mapped until wrapping. They call some GL
function on the same buffer that does a fallback write map on the BO
(u_default_buffer_subdata, util_resource_copy_region, whatever) -- the
buffer is in use, copy triggers, allocates a new BO. Whoops, the user's
pointer for streaming writes is now freed.
Closes: #7570
Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Reviewed-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19351>
