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agx: Implement depth and stencil export

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Lower FRAG_RESULT_DEPTH and FRAG_RESULT_STENCIL writes to a combnied zs_emit
instruction with a multisampling index. To be used in the following commit.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20365>
This commit is contained in:
Alyssa Rosenzweig
2022-12-16 23:38:07 -05:00
committed by Marge Bot
parent 15155268de
commit 9578b47af3
8 changed files with 170 additions and 0 deletions
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5
src/asahi/compiler/agx_opcodes.py
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@@ -117,6 +117,7 @@ NEST = immediate("nest")
INVERT_COND = immediate("invert_cond")
NEST = immediate("nest")
TARGET = immediate("target", "agx_block *")
ZS = immediate("zs")
PERSPECTIVE = immediate("perspective", "bool")
SR = enum("sr", {
0: 'threadgroup_position_in_grid.x',
@@ -251,6 +252,10 @@ op("get_sr", (0x72, 0x7F | L, 4, _), dests = 1, imms = [SR])
op("sample_mask", (0x7fc1, 0xffff, 6, _), dests = 0, srcs = 1, can_eliminate = False)
# Sources: sample mask, combined depth/stencil
op("zs_emit", (0x41, 0xFF | L, 4, _), dests = 0, srcs = 2,
can_eliminate = False, imms = [ZS])
# Essentially same encoding. Last source is the sample mask
op("ld_tile", (0x49, 0x7F, 8, _), dests = 1, srcs = 1,
imms = [FORMAT, MASK, PIXEL_OFFSET], can_reorder = False)