fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-01-07 00:00:12 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

nir: Add Mali load_output taking converison

Browse source 
Mali's LD_TILE instruction (mapping to NIR's load_output) requires a "conversion
descriptor" specifying how to convert from the register foramt to the tilebuffer
format. To implement framebuffer fetch on OpenGL without shader variants, we
generate these descriptors in the driver and pass them in a uniform. However, to
comply with the Ekstrand Rule, we can't have magically materialized system
values -- they should come only from the NIR where the driver can lower as it
pleases (e.g. PanVK can lower to a constant because it knows the framebuffer
format at pipeline create time). Add intrinsics to model this.

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20906>
This commit is contained in:
Alyssa Rosenzweig 2023-02-06 10:49:32 -05:00 • committed by Marge Bot
parent 60bfc4deb9
commit 47ed0b41be
1 changed files with 8 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
src/compiler/nir/nir_intrinsics.py
View file

@ -1298,6 +1298,14 @@ load("raw_output_pan", [1], [IO_SEMANTICS], [CAN_ELIMINATE, CAN_REORDER])
# src[] = { sampler_index }
load("sampler_lod_parameters_pan", [1], flags=[CAN_ELIMINATE, CAN_REORDER])
# Like load_output but using a specified render target conversion descriptor
load("converted_output_pan", [1], indices=[DEST_TYPE, IO_SEMANTICS], flags=[CAN_ELIMINATE])
# Load the render target conversion descriptor for a given render target given
# in the BASE index. Converts to a type with size given by the source type.
# Valid in fragment and blend stages.
system_value("rt_conversion_pan", 1, indices=[BASE, SRC_TYPE], bit_sizes=[32])
# Loads the sample position array on Bifrost, in a packed Arm-specific format
system_value("sample_positions_pan", 1, bit_sizes=[64])