Add V3D_TILE_ALLOC_INITIAL_BLOCK_SIZE = 128 and
V3D_TILE_ALLOC_OVERFLOW_BLOCK_SIZE = 64 to v3d_limits.h.
Corresponding _ENUM macros provide the 2-bit hardware encoding for the
TILE_BINNING_MODE_CFG packets.
The previous implicit 64B initial blocks were too small: a single draw
call emits ~88 bytes of per-tile BCL state, immediately overflowing
into continuation blocks. 128B initial blocks avoid the first
continuation allocation for simple single-draw passes.
Add v3d_tile_alloc_sizes() to v3d_util with the full tile alloc BO and
TSDA sizing logic. This uses the 128B initial blocks and tile_alloc
becomes proportional to the number of draws and size of the initial
blocks allocation with the cap of the previous fixed allocation. So
jobs with 0 or 1 drawcalls (blits/fills) reduce their headroom
dramatically.
The draw-proportional formula replaces a flat 512 KB continuation pool:
headroom = MIN2((tiles_size * draw_count) / 2, 512 KB)
Benchmarked on RPi5 (V3D 7.1) against GfxBench GL tests and
apitrace replays at 1080p. Tile-alloc memory reduction versus the
flat 512 KB headroom (taking into account 256kb kernel alloc per OOM):
GfxBench (5 benchmarks): -45% to -70% reduction, OOM at or below baseline
Apitrace (19 traces): -4% to -77% reduction on 20/24 traces
No FPS regressions observed on any workload.
Reviewed-by: Maíra Canal <mcanal@igalia.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40554>
Certain subgroup operations don’t impose constraints on
CSD supergroup packing. Mark these as supported
and account for them in v3d_csd_choose_workgroups_per_supergroup()
so packing remains unchanged when they are present.
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37836>
Return one work group per super group when the work group size
is multiple of 16 (elements per batch) and recalculate max_wgs_per_sg
only when TSY barriers cut the available QPU threads.
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37836>
In the C23 standard unreachable() is now a predefined function-like
macro in <stddef.h>
See https://android.googlesource.com/platform/bionic/+/HEAD/docs/c23.md#is-now-a-predefined-function_like-macro-in
And this causes build errors when building for C23:
-----------------------------------------------------------------------
In file included from ../src/util/log.h:30,
from ../src/util/log.c:30:
../src/util/macros.h:123:9: warning: "unreachable" redefined
123 | #define unreachable(str) \
| ^~~~~~~~~~~
In file included from ../src/util/macros.h:31:
/usr/lib/gcc/x86_64-linux-gnu/14/include/stddef.h:456:9: note: this is the location of the previous definition
456 | #define unreachable() (__builtin_unreachable ())
| ^~~~~~~~~~~
-----------------------------------------------------------------------
So don't redefine it with the same name, but use the name UNREACHABLE()
to also signify it's a macro.
Using a different name also makes sense because the behavior of the
macro was extending the one of __builtin_unreachable() anyway, and it
also had a different signature, accepting one argument, compared to the
standard unreachable() with no arguments.
This change improves the chances of building mesa with the C23 standard,
which for instance is the default in recent AOSP versions.
All the instances of the macro, including the definition, were updated
with the following command line:
git grep -l '[^_]unreachable(' -- "src/**" | sort | uniq | \
while read file; \
do \
sed -e 's/\([^_]\)unreachable(/\1UNREACHABLE(/g' -i "$file"; \
done && \
sed -e 's/#undef unreachable/#undef UNREACHABLE/g' -i src/intel/isl/isl_aux_info.c
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36437>
We can use the actual bpp of each color attachment to compute real
tile memory requirements, which may allow us to choose a larger tile
size configuration than in V3D 4.2 in certain scenarios.
Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25450>
This is a prepare step to remove depends on p_defines.h in src/util/*
This is done by:
replace pipe_prim_type with mesa_prim
replace shader_prim with mesa_prim
replace PIPE_PRIM_MAX with MESA_PRIM_COUNT
replace SHADER_PRIM_ with MESA_PRIM_
replace PIPE_PRIM_ with MESA_PRIM_
This patch only replace code only
Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Acked-by: Marek Olšák <marek.olsak@amd.com>
Acked-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23369>
Double buffer mode splits the tile buffer size in half so we can
start processing the next tile while the current one is being
stored to memory. This mode is available only if MSAA is not enabled
and can, in theory, improve performance by reducing tile store
overhead, however, it comes at the cost of reducing the tile size,
which also causes some overhead of its own.
Testing shows that this helps some cases (i.e the Vulkan Quake
ports) but hurts others (i.e. Unreal Engine 4), so for the time
being we don't enable this by default but we allow to enable it
selectively by using V3D_DEBUG.
Reviewed-by: Juan A. Suarez <jasuarez@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14551>
When using subgroups there are additional restrictions to consider,
so for now we keep it simple and disable supergroup packing in that
scenario.
Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11620>
