Commit graph

805 commits

Author SHA1 Message Date
Samuel Pitoiset
1db36422b9 radv: fix initializing the DS clear metadata value for separate aspects
We shouldn't overwrite the clear value of the other aspect (in case
separate depth/stencil layouts are used).

Found by inspection.

Cc: 21.2 mesa-stable
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12222>
2021-08-09 10:41:39 +00:00
Timur Kristóf
74181ffcc5 radv: Write RSRC2_GS for NGGC when pipeline is dirty but not emitted.
The radv_emit_ngg_culling_state function won't write the
SPI_SHADER_PGM_RSRC2_GS register when it knows in advance that
radv_emit_graphics_pipeline will overwrite it anyway.

However, there is an unhandled case:

radv_emit_graphics_pipeline will not emit anything (including this
register) when the pipeline is already emitted. Hence, improve
the check in radv_emit_ngg_culling_state to consider this.

Fixes: 9a95f5487f
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12237>
2021-08-06 12:18:37 +02:00
Timur Kristóf
61eb3debcf radv: Don't toggle PC oversubscription for NGG culling.
We are going to add this directly to the pipeline.
If a pipeline has such a shader, NGG culling is turned on
most of the time, so it's not useful to toggle this setting.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11905>
2021-08-04 15:37:05 +00:00
Samuel Pitoiset
87b0962fef radv: do not use radeon_set_context_reg_seq() for only one register
radeon_set_context_reg() is a shortcut for that.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12099>
2021-07-30 17:05:38 +02:00
Samuel Pitoiset
f693b94d2f radv: reduce number of emitted DWORDS for contiguous context registers
radeon_set_context_reg() emits 3 DWORDS, while
radeon_set_context_reg_seq() + 2 values only needs 4 DWORDS.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12099>
2021-07-30 17:05:35 +02:00
Timur Kristóf
6e17931d21 radv: Use pre-computed viewport transform for NGG culling state.
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11839>
2021-07-16 15:22:46 +00:00
Mike Blumenkrantz
c9a478f1cd radv: remove unused variable from radv_emit_viewport
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11839>
2021-07-16 15:22:46 +00:00
Mike Blumenkrantz
a2ef92d7a5 radv: pre-calculate viewport transforms
this requires more storage in the viewport struct, but it avoids
the need to repeatedly calculate the same transform if e.g., a meta
operation occurs, which can save about 5% cpu in some cases

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11839>
2021-07-16 15:22:46 +00:00
Mike Blumenkrantz
1e13cb1965 radv: merge si_write_viewport into radv_emit_viewport
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11839>
2021-07-16 15:22:46 +00:00
Timur Kristóf
d07e5bde75 radv: Remove num_viewports from radv_skip_ngg_culling.
NGG culling is not compiled into shaders that can use multiple
viewports, so it's not necessary to check it here.

Fixes: 9a95f5487f
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11910>
2021-07-16 13:00:36 +00:00
Samuel Pitoiset
7a1cc56e40 radv: fix bounds checking for zero vertex stride on GFX6-7
GFX6 and GFX10+ have similar logic.

This fixes test_zero_vertex_stride from vkd3d-proton on
Pitcairn (GFX6) and on Bonaire (GFX7).

Cc: 21.2 mesa-stable
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11904>
2021-07-16 08:30:07 +02:00
Samuel Pitoiset
1ea156f44c radv: only init the TC-compat ZRANGE metadata for the depth aspect
With separate depth/stencil layouts, if the depth aspect is first
initialized and then cleared, the ZRANGE_PRECISION metadata might
be different than 0. Initializing it again for the stencil aspect
will overwrite the value.

Fixes rendering glitches with Scarlet Nexus on GFX8-9.

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/5052
Cc: 21.1 21.2 mesa-stable
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11883>
2021-07-15 07:21:50 +00:00
Timur Kristóf
9a95f5487f radv: New shader args for NGG culling settings and viewport.
Add new shader arguments in RADV for:
- NGG culling settings
- Viewport transform

These will be used by NGG culling shaders.

Additionally, some tweaks are made to some config registers
in order to make culling shaders more efficient.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10525>
2021-07-13 23:56:33 +00:00
Samuel Pitoiset
29f264f258 ac,radv: implement the cs_regalloc_hang HW bug workaround
Might fix spurious failures on GFX6 and some GFX7 chips.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11675>
2021-07-09 13:37:37 +00:00
Mike Blumenkrantz
a4713ddb56 radv: implement VK_EXT_multi_draw
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11532>
2021-07-06 13:16:56 +00:00
Mike Blumenkrantz
ba30adce07 radv: add a gfx10 bug workaround for NOT_EOP
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11532>
2021-07-06 13:16:56 +00:00
Mike Blumenkrantz
d9132fcb50 radv: split indexed draw cases based on whether drawid is used
fewer conditionals in the draw loop = less overhead

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11532>
2021-07-06 13:16:56 +00:00
Mike Blumenkrantz
5aaf45f5e1 radv: determine if hardware can emit NOT_EOP before emitting
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11532>
2021-07-06 13:16:56 +00:00
Mike Blumenkrantz
d28329ed02 radv: emit drawid for multidraws
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11532>
2021-07-06 13:16:56 +00:00
Mike Blumenkrantz
00206b1664 radv: emit NOT_EOP for multi indexed draws
this is never emitted currently because drawCount is always 1

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11532>
2021-07-06 13:16:56 +00:00
Mike Blumenkrantz
72e75092a9 radv: use multidraw iteration for direct draws
there's still no arrays of draw info being passed, but this takes care of
all the work for it

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11532>
2021-07-06 13:16:56 +00:00
Rhys Perry
307a4bf4ab radv: use null vertex descriptor if num_records=0
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11642>
2021-07-06 13:00:35 +00:00
Rhys Perry
a2ac660eb7 radv: adjust num_records when offset>stride
If an attribute's offset is larger than the stride, the compiler will
increase the vertex index and use offset%stride instead as the offset.

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/5007
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11642>
2021-07-06 13:00:35 +00:00
Rhys Perry
e4fbb200fc radv: don't ever convert num_records to bytes if it's zero
If num_records==0, this conversion doesn't work. We should just keep it at
zero.

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Gitlab: https://gitlab.freedesktop.org/mesa/mesa/-/issues/5007
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11642>
2021-07-06 13:00:35 +00:00
Bas Nieuwenhuizen
f9cc94af7b radv/winsys: Add support for a fixed VA address for replay.
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10570>
2021-07-05 17:27:51 +00:00
Bas Nieuwenhuizen
8025b4120f radv/winsys: Return vulkan errors for buffer creation.
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10570>
2021-07-05 17:27:51 +00:00
Samuel Pitoiset
9a95aba377 radv: implement VK_EXT_color_write_enable
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11530>
2021-07-02 10:02:02 +00:00
Mike Blumenkrantz
c0397a42ce radv: pre-calc vertex buffer descriptor size on pipeline object
util_bitcount has a nonzero cost, and calling it like this in a hotpath
generates unnecessary overhead

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11525>
2021-06-30 13:42:42 +00:00
Samuel Pitoiset
8efa897168 radv: implement dynamic logic op
This is part of VK_EXT_extended_dynamic_state2.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10880>
2021-06-22 15:32:31 +00:00
Samuel Pitoiset
977355c6e5 radv: fix dynamic culling and depth/stencil related dynamic states
To avoid overwriting previous dynamic state with default state from
the pipeline.

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/4926
Cc: 21.1 mesa-stable
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11375>
2021-06-18 16:27:57 +00:00
Mike Blumenkrantz
651c6b16ff radv: move pipe_misaligned and l2_coherent image checks to flags set on init
this should save 4-5% cpu in some cases

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11462>
2021-06-18 16:02:26 +00:00
Bas Nieuwenhuizen
f7c622307d radv: Don't skip barriers that only change queues.
We depend on the queue mask for some decisions ...

CC: mesa-stable
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10802>
2021-06-14 11:20:59 +00:00
Samuel Pitoiset
a234840e60 radv: do not launch an IB2 for secondary cmdbuf with INDIRECT_MULTI on GFX7
It's illegal to emit DRAW_{INDEX}_INDIRECT_MULTI from an IB2 on GFX7.

PAL applies this workaround for indirect dispatches and also on
GFX8-9 but it doesn't seem needed.

This fixes various GPU hangs on Bonaire (GFX7).

Cc: 21.1 mesa-stable
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11214>
2021-06-10 08:31:08 +02:00
Mike Blumenkrantz
79742d41c0 radv: declare index_va in a single call for indexed draw packet emit
this is an extreme hotpath, so having a single calculation in a const
variable is slightly better for compiler microoptimizing

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11124>
2021-06-02 13:31:43 +00:00
Rhys Perry
0f8fef1261 radv: make attrib_end variable in radv_flush_vertex_descriptors 32-bit
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Fixes: 1e9dc0474e ("radv: make radv_pipeline::attrib_ends 32bit")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11089>
2021-05-31 18:28:12 +00:00
Samuel Pitoiset
69ae02151d radv: remove DFSM
DFSM has never been enabled by default because it was slower.
RadeonSI is also dropping support for this because they discovered
that's actually not efficient in practice.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10968>
2021-05-26 17:22:14 +00:00
Samuel Pitoiset
9984ebf173 radv: use radv_dcc_enabled() for the FB mip flush workaround
This has no effects because radv_image_has_CB_metadata() still
accounts for DCC which is incorrect. This should be changed.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10667>
2021-05-26 06:59:35 +00:00
Samuel Pitoiset
ff38e3aadd radv: only mark DCC as compressed when drawing if layout allows it
Just having DCC enabled on the base level doesn't mean we are
using compressed rendering.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10667>
2021-05-26 06:59:35 +00:00
Samuel Pitoiset
bdb9634151 radv: pass an image range to radv_layout_dcc_compressed()
With DCC and mipmaps, some mips can't be compressed and it makes
sense to check this here.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10667>
2021-05-26 06:59:35 +00:00
Samuel Pitoiset
a00be79d80 radv: remove small overhead of radv_pipeline_has_ngg()
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/4784
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10908>
2021-05-24 08:50:47 +00:00
Samuel Pitoiset
726cb2d6f6 ac: ac_gpu_info::has_vgt_flush_ngg_legacy_bug
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10911>
2021-05-21 19:46:56 +00:00
Timur Kristóf
2bb1bf78f0 radv/cmd_buffer: Fix warning by initializing instance count.
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10806>
2021-05-20 17:11:22 +00:00
Samuel Pitoiset
b1171e5ffe Revert "radv: Do not access set layout during vkCmdBindDescriptorSets."
This was a temporary workaround for a Baldur's Gate 3 bug which
should now be fixed.

This reverts commit eb104e949e.

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/3701
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10839>
2021-05-20 13:38:33 +00:00
Bas Nieuwenhuizen
07e0aab9d9 radv: Implement vkCmdTraceRays.
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9767>
2021-05-18 18:29:36 +00:00
Bas Nieuwenhuizen
733c9b6d17 radv: Add RT pipeline bind.
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9767>
2021-05-18 18:29:36 +00:00
Bas Nieuwenhuizen
eba2b4137e radv: Add support for RT bind point.
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9767>
2021-05-18 18:29:36 +00:00
Samuel Pitoiset
143c7f0375 radv: add missing entrypoints for VK_EXT_extended_dynamic_state2
Fixes warnings with dEQP-VK.api.version_check.entry_points.

Fixes: d96507b73f ("radv: advertise VK_EXT_extended_dynamic_state2")
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10831>
2021-05-18 09:32:37 +00:00
Rhys Perry
a54f111831 radv,aco: compact vertex buffer descriptors
It seems common for there to be holes.

fossil-db (GFX10.3, robustBufferAccess enabled):
Totals from 33791 (23.10% of 146267) affected shaders:
(no statistics changed)

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7871>
2021-05-10 12:09:14 +00:00
Rhys Perry
157c6b0f33 radv,aco: use per-attribute vertex descriptors for robustness
We have to use a different num_records for each attribute to correctly
implement robust buffer access.

fossil-db (GFX10.3, robustBufferAccess enabled):
Totals from 60059 (41.06% of 146267) affected shaders:
VGPRs: 2169040 -> 2169024 (-0.00%); split: -0.02%, +0.02%
CodeSize: 79473128 -> 81156016 (+2.12%); split: -0.00%, +2.12%
MaxWaves: 1635360 -> 1635258 (-0.01%); split: +0.00%, -0.01%
Instrs: 15559040 -> 15793205 (+1.51%); split: -0.01%, +1.52%
Latency: 90954792 -> 91308768 (+0.39%); split: -0.30%, +0.69%
InvThroughput: 14937873 -> 14958761 (+0.14%); split: -0.04%, +0.18%
VClause: 444280 -> 412074 (-7.25%); split: -9.22%, +1.97%
SClause: 588545 -> 644141 (+9.45%); split: -0.54%, +9.99%
Copies: 1010395 -> 1011232 (+0.08%); split: -0.44%, +0.53%
Branches: 274279 -> 274282 (+0.00%); split: -0.00%, +0.00%
PreSGPRs: 1431171 -> 1405056 (-1.82%); split: -2.89%, +1.07%
PreVGPRs: 1575253 -> 1575259 (+0.00%)

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7871>
2021-05-10 12:09:14 +00:00
Samuel Pitoiset
54b0cfb061 radv: fix extending the dirty bits to 64-bit
New dynamic states added for VK_EXT_extended_dynamic_state2 causes
GPU hangs with vkd3d-proton.

Fixes: 7bdd569d7e ("radv: extend the dirty bits to 64-bit")
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10693>
2021-05-07 18:09:00 +00:00