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radv/rt: remove one VALU from traversal loop

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Not much, but something, I guess?

Foz-DB Navi31:
Totals from 93 (0.12% of 79395) affected shaders:
MaxWaves: 1338 -> 1354 (+1.20%)
Instrs: 3689907 -> 3689721 (-0.01%); split: -0.01%, +0.00%
CodeSize: 18921812 -> 18922920 (+0.01%); split: -0.00%, +0.01%
VGPRs: 9012 -> 8988 (-0.27%)
Latency: 23153748 -> 23167640 (+0.06%)
InvThroughput: 4490882 -> 4493136 (+0.05%)
Copies: 287888 -> 287728 (-0.06%)
VALU: 2022082 -> 2021916 (-0.01%)
SALU: 458904 -> 459064 (+0.03%)

Reviewed-by: Konstantin Seurer <konstantin.seurer@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30342>
This commit is contained in:
Georg Lehmann
2024-07-24 12:45:30 +02:00
committed by Marge Bot
parent 3e6b73a75a
commit 97aa3464b9
1 changed files with 3 additions and 4 deletions
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7
src/amd/vulkan/nir/radv_nir_rt_common.c
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@@ -560,12 +560,11 @@ radv_build_ray_traversal(struct radv_device *device, nir_builder *b, const struc
nir_load_deref(b, args->vars.dir), nir_load_deref(b, args->vars.inv_dir));
}
nir_def *node_type = nir_iand_imm(b, bvh_node, 7);
nir_push_if(b, nir_uge_imm(b, node_type, radv_bvh_node_box16));
nir_push_if(b, nir_test_mask(b, bvh_node, BITFIELD64_BIT(ffs(radv_bvh_node_box16) - 1)));
{
nir_push_if(b, nir_uge_imm(b, node_type, radv_bvh_node_instance));
nir_push_if(b, nir_test_mask(b, bvh_node, BITFIELD64_BIT(ffs(radv_bvh_node_instance) - 1)));
{
nir_push_if(b, nir_ieq_imm(b, node_type, radv_bvh_node_aabb));
nir_push_if(b, nir_test_mask(b, bvh_node, BITFIELD64_BIT(ffs(radv_bvh_node_aabb) - 1)));
{
insert_traversal_aabb_case(device, b, args, &ray_flags, global_bvh_node);
}