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lavapipe: pre-load tmax

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tmax is lowered to scratch with ray tracing pipelines.

Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34003>
This commit is contained in:
Konstantin Seurer
2025-03-11 09:32:35 +01:00
parent c1a620ae19
commit 7113620625
1 changed files with 4 additions and 2 deletions
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src/gallium/frontends/lavapipe/nir/lvp_nir_ray_tracing.c
+4 -2
View File
@@ -474,6 +474,8 @@ lvp_build_ray_traversal(nir_builder *b, const struct lvp_ray_traversal_args *arg
for (uint32_t i = 0; i < ARRAY_SIZE(node_data); i++)
node_data[i] = nir_build_load_global(b, 1, 32, nir_iadd_imm(b, node_addr, i * 4));
nir_def *tmax = nir_load_deref(b, args->vars.tmax);
nir_def *node_type = nir_iand_imm(b, bvh_node, 3);
nir_push_if(b, nir_uge_imm(b, node_type, lvp_bvh_node_internal));
{
@@ -523,7 +525,7 @@ lvp_build_ray_traversal(nir_builder *b, const struct lvp_ray_traversal_args *arg
nir_push_else(b, NULL);
{
nir_def *result = lvp_build_intersect_ray_box(
b, node_data, nir_load_deref(b, args->vars.tmax),
b, node_data, tmax,
nir_load_deref(b, args->vars.origin), nir_load_deref(b, args->vars.dir),
nir_load_deref(b, args->vars.inv_dir));
@@ -540,7 +542,7 @@ lvp_build_ray_traversal(nir_builder *b, const struct lvp_ray_traversal_args *arg
nir_push_else(b, NULL);
{
nir_def *result = lvp_build_intersect_ray_tri(
b, node_data, nir_load_deref(b, args->vars.tmax), nir_load_deref(b, args->vars.origin),
b, node_data, tmax, nir_load_deref(b, args->vars.origin),
nir_load_deref(b, args->vars.dir), nir_load_deref(b, args->vars.inv_dir));
lvp_build_triangle_case(b, args, &ray_flags, result, node_addr, node_data);