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Swr caches fb contents in tiles. Those tiles are stored on a per-context
basis.
When switching contexts that share resources we need to make sure that
the tiles of the old context are being stored and the tiles of the new
context are being invalidated (marked as invalid, hence contents need
to be reloaded).
The context does not get any dirty bits to identify this case. This has
to be, then, coordinated by the resources that are being shared between
the contexts.
Add a "curr_pipe" hook in swr_resource that will allow us to identify a
MakeCurrent of the above form during swr_update_derived(). At that time,
we invalidate the tiles of the new context. The old context, will need to
have already store its tiles by that time, which happens during glFlush().
glFlush() is being called at the beginning of MakeCurrent.
So, the sequence of operations is:
- At the beginning of glXMakeCurrent(), glFlush() will store the tiles
of all bound surfaces of the old context.
- After the store, a fence will guarantee that the all tile store make
it to the surface
- During swr_update_derived(), when we validate the new context, we check
all resources to see what changed, and if so, we invalidate the
current tiles.
Fixes rendering problems with CEI/Ensight.
Reviewed-by: Bruce Cherniak <[email protected]>
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Reviewed-by: Bruce Cherniak <[email protected]>
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Consider the following RT attachment order:
1. Attach surfaces attachments 0 & 1, and render with them
2. Detach 0 & 1
3. Re-attach 0 & 1 to different surfaces
4. Render with the new attachment
The definition of a tile being resolved is that local changes have been
flushed out to the surface, hence there is no need to reload the tile before
it's written to. For an invalid tile, the tile has to be reloaded from
the surface before rendering.
Stage (2) was marking hot tiles for attachements 0 & 1 as RESOLVED,
which means that the hot tiles can be written out to memory with no
need to read them back in (they are "clean"). They need to be marked as
resolved here, because a surface may be destroyed after a detach, and we
don't want to have un-resolved tiles that may force a readback from a
NULL (destroyed) surface. (Part of a destroy is detach all attachments first)
Stage (3), during the no att -> att transition, we need to realize that the
"new" surface tiles need to be fetched fresh from the new surface, instead
of using the resolved tiles, that belong to a stale attachment.
This is done by marking the hot tiles as invalid in stage (3), when we realize
that a new attachment is being made, so that they are re-fetched during
rendering in stage (4).
Also note that hot tiles are indexed by attachment.
- Fixes VTK dual depth-peeling tests.
- No piglit changes
Reviewed-by: Tim Rowley <[email protected]>
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This patch enables multisample antialiasing in the OpenSWR software renderer.
MSAA is a proof-of-concept/work-in-progress with bug fixes and performance
on the way. We wanted to get the changes out now to allow several customers
to begin experimenting with MSAA in a software renderer. So as not to
impact current customers, MSAA is turned off by default - previous
functionality and performance remain intact. It is easily enabled via
environment variables, as described below.
It has only been tested with the glx-lib winsys. The intention is to
enable other state-trackers, both Windows and Linux and more fully support
FBOs.
There are 2 environment variables that affect behavior:
* SWR_MSAA_FORCE_ENABLE - force MSAA on, for apps that are not designed
for MSAA... Beware, results will vary. This is mainly for testing.
* SWR_MSAA_MAX_SAMPLE_COUNT - sets maximum supported number of
samples (1,2,4,8,16), or 0 to disable MSAA altogether.
(The default is currently 0.)
Reviewed-by: George Kyriazis <[email protected]>
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This is a bit of a mega-commit, but unfortunately there's no great way
to break this up since a lot of different pieces have to match up. Here
we do the following:
- change surface layout to match swr's Load/StoreTile expectations
- fix sampler settings to respect all sampler view parameters
- fix stencil sampling to read from secondary resource
- respect pipe surface format, level, and layer settings
- fix resource map/unmap based on the new layout logic
- fix resource map/unmap to copy proper parts of stencil values in and
out of the matching depth texture
These fix a massive quantity of piglits, including all the
tex-miplevel-selection ones.
Note that the swr native miptree layout isn't extremely space-efficient,
and we end up using it for all textures, not just the renderable ones. A
back-of-the-envelope calculation suggests about 10%-25% increased memory
usage for miptrees, depending on the number of LODs. Single-LOD textures
should be unaffected.
There are a handful of regressions as a result of this change:
- Some textureGrad tests, these failures match llvmpipe. (There are
debug settings allowing improved gallivm sampling accurancy.)
- Some layered clearing tests as swr doesn't currently support that. It
was getting lucky before because enough other things were broken.
Signed-off-by: Ilia Mirkin <[email protected]>
Reviewed-by: Bruce Cherniak <[email protected]>
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Code was using an incorrect address for the base pointer.
v2: use swr_resource_data() utility function.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94979
Reviewed-by: Bruce Cherniak <[email protected]>
Tested-by: Markus Wick <[email protected]>
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Removed bound_to_context. We now pick up the context from the screen
instead of the resource itself. The resource could be out-of-date
and point to a pipe that is already freed.
Fixes manywin mesa xdemo.
Reviewed-by: Bruce Cherniak <[email protected]>
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Better tracking of resource state and synchronization.
A follow on commit will clean up resource functions into a new
swr_resource.cpp file.
Reviewed-By: George Kyriazis <[email protected]>
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OpenSWR is a new software rasterizer for x86 processors designed
for high performance and high scalablility on visualization workloads.
Acked-by: Roland Scheidegger <[email protected]>
Acked-by: Jose Fonseca <[email protected]>
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