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radv: Add and use RADV_OFFSET_UNUSED

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This deduplicates the logic to figure out what needs to be written.

Reviewed-by: Natalie Vock <natalie.vock@gmx.de>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35445>
This commit is contained in:
Konstantin Seurer 2025-05-31 09:54:41 +02:00 • committed by Marge Bot
parent 1dda9d56cb
commit 703a154f29
1 changed files with 5 additions and 1 deletions
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6
src/amd/vulkan/radv_acceleration_structure.c
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@ -48,6 +48,8 @@ static const uint32_t leaf_spv[] = {
#include "bvh/radv_leaf.spv.h"
};
#define RADV_OFFSET_UNUSED 0xffffffff
struct acceleration_structure_layout {
uint32_t geometry_info_offset;
uint32_t leaf_node_offsets_offset;
@ -123,6 +125,8 @@ radv_get_acceleration_structure_layout(struct radv_device *device,
if (device->rra_trace.accel_structs) {
accel_struct->geometry_info_offset = offset;
offset += sizeof(struct radv_accel_struct_geometry_info) * state->build_info->geometryCount;
} else {
accel_struct->geometry_info_offset = RADV_OFFSET_UNUSED;
}
/* On GFX12, we need additional space for leaf node offsets since they do not have the same
@ -512,7 +516,7 @@ radv_init_header(VkCommandBuffer commandBuffer, const struct vk_acceleration_str
radv_update_memory_cp(cmd_buffer, vk_acceleration_structure_get_va(dst) + base, (const char *)&header + base,
sizeof(header) - base);
if (device->rra_trace.accel_structs) {
if (layout.geometry_info_offset != RADV_OFFSET_UNUSED) {
uint64_t geometry_infos_size = state->build_info->geometryCount * sizeof(struct radv_accel_struct_geometry_info);
struct radv_accel_struct_geometry_info *geometry_infos = malloc(geometry_infos_size);