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radv: Use compares for node type in traversal.

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The HW has no bit test instruction, so we change 3 pairs of and+cmp
to a single and + 3 cmps, saving 2 VALU instructions.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19454>
This commit is contained in:
Bas Nieuwenhuizen
2022-11-01 22:18:53 +01:00
committed by Marge Bot
parent 4770d3f0ba
commit 9a8453d07e
1 changed files with 4 additions and 3 deletions
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7
src/amd/vulkan/radv_rt_common.c
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@@ -641,11 +641,12 @@ radv_build_ray_traversal(struct radv_device *device, nir_builder *b,
nir_load_deref(b, args->vars.dir), nir_load_deref(b, args->vars.inv_dir));
}
nir_push_if(b, nir_ine_imm(b, nir_iand_imm(b, bvh_node, 4), 0));
nir_ssa_def *node_type = nir_iand_imm(b, bvh_node, 7);
nir_push_if(b, nir_uge(b, node_type, nir_imm_int(b, radv_bvh_node_box16)));
{
nir_push_if(b, nir_ine_imm(b, nir_iand_imm(b, bvh_node, 2), 0));
nir_push_if(b, nir_uge(b, node_type, nir_imm_int(b, radv_bvh_node_instance)));
{
nir_push_if(b, nir_ine_imm(b, nir_iand_imm(b, bvh_node, 1), 0));
nir_push_if(b, nir_ieq_imm(b, node_type, radv_bvh_node_aabb));
{
insert_traversal_aabb_case(device, b, args, global_bvh_node);
}