Commit graph

1040 commits

Author SHA1 Message Date
Samuel Pitoiset
85a55009be radv: stop clearing bitfields for registers that are emitted dynamically
These fields aren't set at pipeline creation, so clearing them is
just useless.

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/18234>
2022-08-26 06:33:05 +00:00
Jason Ekstrand
cc2cdf88fb radv: Don't assume layout == stencilLayout for stencil-only
This assumption is probably valid with render passes but it won't for
dynamic rendering where we may not have a layout for depth at all.

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18084>
2022-08-23 16:41:56 +00:00
Jason Ekstrand
b772e30ce7 radv: Add a image_transition helper for separate depth/stencil layouts
This just reduces churn a bit when we switch to dynamic rendering.

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18084>
2022-08-23 16:41:56 +00:00
Jason Ekstrand
804ce28444 radv: Drop set/restore_subpass
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18084>
2022-08-23 16:41:56 +00:00
Jason Ekstrand
4e52efcc43 radv: Use VK_IMAGE_LAYOUT_ATTACHMENT_FEEDBACK_LOOP_OPTIMAL_EXT for render loops
This commit fixes
dEQP-VK.rasterization.rasterization_order_attachment_access.format on
GFX9 because changing the layout for Vulkan feedback loops will trigger
a fast-clear eliminate.  Though, the root cause is unrelated to that and
it's because the CMASK/FMASK initialization on GFX9 is currently broken
for TC-compatible images (there is a TODO somewhere).

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18084>
2022-08-23 16:41:56 +00:00
Samuel Pitoiset
5076bed2fb radv: slightly change the color write enable mask
For switching to the common graphics pipeline state.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18015>
2022-08-16 08:41:36 +02:00
Samuel Pitoiset
1d92ab921b radv: remove unecessary radv_pipeline::uses_dynamic_stride
We can just rely on the dynamic states.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18007>
2022-08-11 14:53:32 +00:00
Mike Blumenkrantz
bc7edc1c7a radv: force inlining on another draw function
Reviewed-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/17993>
2022-08-11 12:27:23 +00:00
Mike Blumenkrantz
64395f0d85 radv: remove stupid conditional from draw path
compilers are now provably smart enough to handle this

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17993>
2022-08-11 12:27:23 +00:00
Samuel Pitoiset
bea050345e radv: do not set registers for PSO states that are dynamic
Dynamic states are emitted from the cmdbuf, setting them from the
pipeline has no effects because they should be ignored anyways.

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/17677>
2022-08-10 17:26:26 +00:00
Samuel Pitoiset
42803c70ef radv: simplify dynamic states uses when determining NGG culling settings
Looking at the dynamic states is enough.

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/17677>
2022-08-10 17:26:26 +00:00
Samuel Pitoiset
d4b8abe511 radv: simplify radv_bind_dynamic_state() slightly
This adds RADV_CMP_COPY to compact copies. Based on ANV.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17649>
2022-08-08 14:59:47 +00:00
Samuel Pitoiset
18e9ba3e3b radv: remove unused states parameter from some radv_emit_XXX() helpers
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17649>
2022-08-08 14:59:47 +00:00
Samuel Pitoiset
1fb12d2cce radv: use ref counting for VS prologs and PS epilogs
With GPL, it will be possible to create VS prologs and PS epilogs
from libraries, so reference counting is useful here too.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-By: Tatsuyuki Ishi <ishitatsuyuki@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17628>
2022-08-08 10:52:31 +00:00
Konstantin Seurer
19f8d33876 radv: Use vk_descriptor_set_layout
Use the common ref counting and the common destroy entrypoint.

Signed-off-by: Konstantin Seurer <konstantin.seurer@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17818>
2022-08-02 14:16:14 +00:00
Benjamin Cheng
27a24cb382 radv: implement disjoint memory for multiplane images
For descriptor binding, we need to allow up to three buffers to be
referenced by any image.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16510>
2022-07-26 19:50:58 +00:00
Benjamin Cheng
72625bea5f radv: refactor image binding into struct
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16510>
2022-07-26 19:50:57 +00:00
Timur Kristóf
28db493cdc radv: Copy BO list to ACE internal CS.
This is necessary to make sure the ACE internal cmdbuf
can access the same memory as the GFX cmdbuf.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16531>
2022-07-20 19:00:30 +00:00
Timur Kristóf
eeb8366bbd radv: Workaround MEC taskmesh dispatch hang when count buffer has zero.
The DISPATCH_TASKMESH_INDIRECT_MULTI_ACE packet has a firmware bug,
it hangs the GPU when the draw count is zero.

This commit adds a workaround sequence using COND_EXEC packets
which make sure that this indirect packet is never executed when
the draw count is zero.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16531>
2022-07-20 19:00:30 +00:00
Timur Kristóf
7b8f087f6b radv: Support task shaders in secondary cmd buffers.
Special consideration is needed to keep ACE and GFX in sync.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16531>
2022-07-20 19:00:30 +00:00
Timur Kristóf
4c6f83006d radv: Synchronization for task shaders.
Add a separate flush_bits field for tracking cache
flushes in the ACE internal cmdbuf.
In barriers and image transitions we add these flush bits to ACE.

Create a semaphore in the upload BO which makes it possible
for ACE to wait for GFX for the purpose of synchronization.
This is necessary when a barrier needs to block task shaders.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16531>
2022-07-20 19:00:30 +00:00
Timur Kristóf
2479b62869 radv: Implement mesh shading draw calls with task shaders.
This implements NV_mesh_shader draw calls with task shaders.

- On the GFX side:
  DISPATCH_TASKMESH_GFX for all draws
- On the ACE side:
  DISPATCH_TASKMESH_DIRECT_ACE for direct draws
  DISPATCH_TASKMESH_INDIRECT_MULTI_ACE for indirect draws

Additionally, the NV_mesh_shader indirect BO layout is
incompatible with AMD HW, so we add a function that copies
that into a suitable layout.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16531>
2022-07-20 19:00:30 +00:00
Timur Kristóf
99179f8490 radv: Introduce radv_before_taskmesh_draw.
This includes additional code that takes care of
handling the internal ACE cmdbuf.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16531>
2022-07-20 19:00:30 +00:00
Timur Kristóf
79287f5ae6 radv: Flush descriptors and push constants for task shaders.
Task shaders are executed on the internal compute cmdbuf, so they
need special consideration.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16531>
2022-07-20 19:00:30 +00:00
Timur Kristóf
ef07c3272a radv: Create internal cmdbuf when a graphics pipeline needs compute.
This is mainly going to be used by task shaders, because
the HW implementation mismatches the API:

- In the API, task shaders are considered graphics shaders which
  are part of a graphics pipeline and the draws are submitted to
  a graphics queue.
- The HW requires the driver to dispatch task shaders on
  an async compute queue.

When a pipeline is bound that has a task shader, create a
driver-internal ACE (async compute engine) cmdbuf which
we are going to submit to an ACE queue.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16531>
2022-07-20 19:00:30 +00:00
Timur Kristóf
d718bea92d radv: Move inline push constants to a new function.
This cleans up radv_flush_constants and also
the new function will be reused later.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16531>
2022-07-20 19:00:30 +00:00
Timur Kristóf
c4d60df380 radv: Refactor view index emit to use a per-stage function.
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16531>
2022-07-20 19:00:30 +00:00
Timur Kristóf
99b7521504 radv: Refactor radv_emit_inline_push_consts to work with radeon_cmdbuf.
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16531>
2022-07-20 19:00:30 +00:00
Timur Kristóf
19fcf5a4cb radv: Refactor radv_emit_descriptor_pointers to work with radeon_cmdbuf.
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16531>
2022-07-20 19:00:30 +00:00
Timur Kristóf
21e6d596ed radv: Refactor radv_emit_userdata_address to work with radeon_cmdbuf.
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16531>
2022-07-20 19:00:30 +00:00
Timur Kristóf
e10cbb5d98 radv: Refactor predication for compute queues.
Initialize the inverted predication VA only when it is used
for the first time.

This is needed to get conditional rendering work correctly with
task shaders because the internal compute cmdbuf may not exist
yet when conditional rendering starts.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16531>
2022-07-20 19:00:30 +00:00
Rhys Perry
0fb3aa005f radv: don't update misaligned_mask in CmdBindVertexBuffers2
This can't do it in the loop because it doesn't easily know what
attributes use a binding.

We could do it in a separate loop, but there's no point, especially since
zink does CmdSetVertexInputEXT() after CmdBindVertexBuffers2().

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Fixes: c335a4d70e ("radv: dynamically calculate misaligned_mask for dynamic vertex input")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17521>
2022-07-19 20:40:20 +00:00
Rhys Perry
1d019d2ab7 radv: fix vbo_bound_mask indexing
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/6812
Fixes: 1b8bdecf6e ("radv: add a mask of bound descriptor buffers for dynamic vertex input")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17521>
2022-07-19 20:40:20 +00:00
Samuel Pitoiset
203afc9351 radv: disable viewport depth clamping only when necessary
When the application uses depth values outside of the [0.0,1.0] range
with VK_EXT_depth_range_unrestricted, or when explicitly disabled.
Otherwise, the driver can clamp to [0.0,1.0] internally for optimal
performance.

From the Vulkan spec "in 28.10.1. Depth Clamping and Range Adjustment":

    "If depth clamping is not enabled and zf is not in the range [0, 1]
    and either VK_EXT_depth_range_unrestricted is not enabled, or the
    depth attachment has a fixed-point format, then zf is undefined
    following this step."

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16349>
2022-07-19 09:00:27 +00:00
Konstantin Seurer
0580910aa9 radv: Only set rt stack size for dynamic stacks
When using a static callable stack, the required scratch has already
been allocated.
Dynamic stacks are located at the end of scratch memory
and are allocated on demand using radv_set_rt_stack_size.
Static stacks live at the start of scratch memory and are allocated in
create_rt_shader by setting scratch_size.

Signed-off-by: Konstantin Seurer <konstantin.seurer@gmail.com>
Reviewed-By: Tatsuyuki Ishi <ishitatsuyuki@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17579>
2022-07-18 12:05:35 +00:00
Bas Nieuwenhuizen
05bf39238b radv: Add stub for vkCmdBindPipelineShaderGroupNV.
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17269>
2022-07-15 14:45:13 +00:00
Bas Nieuwenhuizen
3f09bd5a0e radv: Implement CmdExecuteGeneratedCommandsNV.
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17269>
2022-07-15 14:45:13 +00:00
Bas Nieuwenhuizen
848d3fdeb6 radv: Add flushing for DGC.
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17269>
2022-07-15 14:45:13 +00:00
Bas Nieuwenhuizen
df69b34450 radv: Add helper to write scissors.
For use by DGC shader.

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17269>
2022-07-15 14:45:13 +00:00
Bas Nieuwenhuizen
57017b494d radv: Make radv_get_vgt_index_size non-static.
For DGC cmdbuffer generation use.

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17269>
2022-07-15 14:45:13 +00:00
Bas Nieuwenhuizen
f6a21fccf9 radv: Expose helper for base pa_su_sc_mode_cntl.
So that we can feed it to the DGC shader for front face overrides.

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17269>
2022-07-15 14:45:13 +00:00
Bas Nieuwenhuizen
cca680bab1 radv: Always store stride in the vbo descriptor.
So we can use it in the DGC shader.

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17269>
2022-07-15 14:45:13 +00:00
Bas Nieuwenhuizen
bce3af2cb3 radv: Expose function to write vertex descriptors for dgc.
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17269>
2022-07-15 14:45:13 +00:00
Bas Nieuwenhuizen
82c2e99102 radv: Skip setting empty index buffers to avoid hang
In the direct path we already skipped draws, but in DGC I noticed
that just emitting these packets can cause issues ...

Cc: mesa-stable
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17269>
2022-07-15 14:45:13 +00:00
Konstantin Seurer
82283de717 radv: Use a global address for sbt_base
Required for indirect(2) ray tracing to work.
Fixes the following tests:

dEQP-VK.ray_tracing_pipeline.trace_rays_indirect2.indirect_*
dEQP-VK.ray_tracing_pipeline.trace_rays_cmds_maintenance_1.indirect2_*

Fixes: 16585664 ("radv: vkCmdTraceRaysIndirect2KHR")
Signed-off-by: Konstantin Seurer <konstantin.seurer@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17316>
2022-07-14 16:35:31 +00:00
Konstantin Seurer
69daa3f762 radv: Use a global address for ray_launch_size
Required for indirect(2) ray tracing to work.

Fixes: b30f96dd ("radv,aco: Use ray_launch_size_addr")
Signed-off-by: Konstantin Seurer <konstantin.seurer@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17316>
2022-07-14 16:35:31 +00:00
Dave Airlie
105279e989 radv: add a dynamic vertex format cache.
With dynamic vertex bindings the vertex format lookups are a lot
more frequent (vs being baked in the pipeline). Add a simple lookup
cache using a dynamic array to keep track of the hw values, and
avoid repeated translation.

This also reduces the memset to just the bitfields since all
the others will be overwritten.

Seen in perf traces gputest gimark with zink on radv.

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15846>
2022-07-13 01:10:09 +00:00
Eric Engestrom
9035408d62 radv: use updated tokens from vk.xml
Signed-off-by: Eric Engestrom <eric@igalia.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Acked-by: Jason Ekstrand <jason.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17342>
2022-07-12 15:53:11 +00:00
Samuel Pitoiset
e9b2fa6527 radv: fix wide points/lines by configuring the guardband correctly
Fixes all remaining wide points/lines failures with Zink.

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/6121
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/17392>
2022-07-12 09:11:40 +02:00
Samuel Pitoiset
06a48e599e radv: use LOAD_CONTEXT_REG to load the opaque buffer size on GFX10+
For unknown reasons, COPY_DATA can hang on GFX10+ while it doesn't
hang on GFX9. Adding PFP_SYNC_ME before/after the COPY_DATA doesn't
fix the hang either.

Using a LOAD_CONTEXT_REG_INDEX packet shouldn't be needed unless the
driver supports preemption (shadow memory) which RADV doesn't support.

I don't have a real explanation but PFP_SYNC_ME+LOAD_CONTEXT_REG_INDEX
fixes a GPU hang with Space Engineers (game uses a bunch of consecutive
calls to vkCmdDrawIndirectByteCountEXT without anything in-between).

Gitlab: https://gitlab.freedesktop.org/mesa/mesa/-/issues/5838
Cc: mesa-stable
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17290>
2022-07-04 08:42:53 +02:00