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This makes brw_context inherit directly from gl_context; that was the
only thing left in intel_context.
Signed-off-by: Kenneth Graunke <[email protected]>
Acked-by: Chris Forbes <[email protected]>
Acked-by: Paul Berry <[email protected]>
Acked-by: Anuj Phogat <[email protected]>
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Most functions no longer use intel_context, so this patch additionally
removes the local "intel" variables to avoid compiler warnings.
Signed-off-by: Kenneth Graunke <[email protected]>
Acked-by: Chris Forbes <[email protected]>
Acked-by: Paul Berry <[email protected]>
Acked-by: Anuj Phogat <[email protected]>
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2/3 packets depending on Stencil._Enabled already checked for
_NEW_BUFFERS, so just add _NEW_BUFFERS to the remaining one.
Reviewed-by: Anuj Phogat <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
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See two commits ago for the rationale. This allows us to delete the
whole gen7_cc_state.c file.
This does move these commands before the depth stall flushes from
brw_emit_depthbuffer, which may be a problem. The documentation for
3DSTATE_DEPTH_BUFFER mentions that depth stall flushes are required
before changing any depth/stencil buffer state, but explicitly lists
3DSTATE_DEPTH_BUFFER, 3DSTATE_HIER_DEPTH_BUFFER, 3DSTATE_STENCIL_BUFFER,
and 3DSTATE_CLEAR_PARAMS. It does not mention this particular packet
(_3DSTATE_DEPTH_STENCIL_STATE_POINTERS).
No observed Piglit regressions on Sandybridge or Ivybridge.
Together with the last two commits, this makes a cairo-gl benchmark
faster by 0.324552% +/- 0.258355% on Ivybridge. No statistically
significant change on Sandybridge. (Thanks to Eric for the numbers.)
Signed-off-by: Kenneth Graunke <[email protected]>
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This is the same computation as the _WriteEnabled flag, so we may as
well use it.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
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The HiZ op was implemented as a meta-op. This patch reimplements it by
emitting a special HiZ batch. This fixes several known bugs, and likely
a lot of undiscovered ones too.
==== Why the HiZ meta-op needed to die ====
The HiZ op was implemented as a meta-op, which caused lots of trouble. All
other meta-ops occur as a result of some GL call (for example, glClear and
glGenerateMipmap), but the HiZ meta-op was special. It was called in
places that Mesa (in particular, the vbo and swrast modules) did not
expect---and were not prepared for---state changes to occur (for example:
glDraw; glCallList; within glBegin/End blocks; and within
swrast_prepare_render as a result of intel_miptree_map).
In an attempt to work around these unexpected state changes, I added two
hooks in i965:
- A hook for glDraw, located in brw_predraw_resolve_buffers (which is
called in the glDraw path). This hook detected if a predraw resolve
meta-op had occurred, and would hackishly repropagate some GL state
if necessary. This ensured that the meta-op state changes would not
intefere with the vbo module's subsequent execution of glDraw.
- A hook for glBegin, implemented by brwPrepareExecBegin. This hook
resolved all buffers before entering
a glBegin/End block, thus preventing an infinitely recurring call to
vbo_exec_FlushVertices. The vbo module calls vbo_exec_FlushVertices to
flush its vertex queue in response to GL state changes.
Unfortunately, these hooks were not sufficient. The meta-op state changes
still interacted badly with glPopAttrib (as discovered in bug 44927) and
with swrast rendering (as discovered by debugging gen6's swrast fallback
for glBitmap). I expect there are more undiscovered bugs. Rather than play
whack-a-mole in a minefield, the sane approach is to replace the HiZ
meta-op with something safer.
==== How it was killed ====
This patch consists of several logical components:
1. Rewrite the HiZ op by replacing function gen6_resolve_slice with
gen6_hiz_exec and gen7_hiz_exec. The new functions do not call
a meta-op, but instead manually construct and emit a batch to "draw"
the HiZ op's rectangle primitive. The new functions alter no GL
state.
2. Add fields to brw_context::hiz for the new HiZ op.
3. Emit a workaround flush when toggling 3DSTATE_VS.VsFunctionEnable.
4. Kill all dead HiZ code:
- the function gen6_resolve_slice
- the dirty flag BRW_NEW_HIZ
- the dead fields in brw_context::hiz
- the state packet manipulation triggered by the now removed
brw_context::hiz::op
- the meta-op workaround in brw_predraw_resolve_buffers (discussed
above)
- the meta-op workaround brwPrepareExecBegin (discussed above)
Note: This is a candidate for the 8.0 branch.
Reviewed-by: Eric Anholt <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
Acked-by: Paul Berry <[email protected]>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=43327
Reported-by: [email protected]
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=44927
Reported-by: [email protected]
Signed-off-by: Chad Versace <[email protected]>
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This brings the dirty bits in line with the comments.
This does /not/ need to be cherry-picked to stable branches because the
access requiring _NEW_BUFFERS was added in master as part of HiZ.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
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For the non-separate-stencil-only case, we've been using a NULL
surface for depth, so we didn't have to care. However, to support
separate stencil with no depthbuffer, we have to make the depth
surface non-NULL or the stencil test always fails thanks to separate
stencil inheriting the surface type of depth.
Fixes hiz-depth-stencil-test-d0-s8.
Reviewed-by: Chad Versace <[email protected]>
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A lot of the state manipulation is handled by the meta-op state setup.
However, some batches need manual intervention.
v2:
Do not special-case the 3DSTATE_DEPTH_STENCIL.Depth_Test_Enable bit
for HiZ in gen6_upload_depth_stencil(). The HiZ meta-op sets
ctx->Depth.Test, just read the value from that.
v3:
Add a new dirty flag, BRW_STATE_HIZ, for brw_tracked_state. Flag it
immediately before and after executing the HiZ operation in
gen6_resolve_slice(). Add the flag to the the dirty bits for the
following state packets:
gen6_clip_state
gen6_depth_stencil_state
gen6_sf_state
gen6_wm_state
v4:
- Add BRW_NEW_STATE_HIZ to the dirty bit table in brw_state_upload.c.
This is needed for INTEL_DEBUG=state.
- Align brw dirty bit for gen6_depth_stencil_state.
Reviewed-by: Eric Anholt <[email protected]>
Signed-off-by: Chad Versace <[email protected]>
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This is part of a series trying to eliminate the separate prepare()
hook in state upload. The prepare() hook existed to support the
check_aperture in between calculating state updates and setting up the
batch, but there should be no reason for that any more.
Reviewed-by: Kenneth Graunke <[email protected]>
Acked-by: Paul Berry <[email protected]>
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I want to make brw_state_dump.c handle more than just the last
statechange, so I want to keep track of what's in the batch state. By
using AUB file numbering for most of these packets, this may be
reusable for aub dumping.
Reviewed-by: Kenneth Graunke <[email protected]>
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Reviewed-by: Kenneth Graunke <[email protected]>
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The slightly less mechanical change of converting the emit_reloc calls
will follow.
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