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anv: Fix support for indirect SBTs on Xe3+

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Fixes: 6deb195 ("anv: Update RT dispatch globals to use 64bit data structure")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41004>
(cherry picked from commit 6aabe5482e)
This commit is contained in:
Calder Young 2026-04-09 15:12:11 -07:00 • committed by Eric Engestrom
parent cda0b0c9f8
commit 74b707c5c6
3 changed files with 82 additions and 1 deletions
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2
.pick_status.json
View file

@ -2124,7 +2124,7 @@
"description": "anv: Fix support for indirect SBTs on Xe3+",
"nominated": true,
"nomination_type": 2,
"resolution": 0,
"resolution": 1,
"main_sha": null,
"because_sha": "6deb1950a4b632b9c1b0af88ad949a4dcf6d4257",
"notes": null

3
src/intel/genxml/meson.build
View file

@ -82,6 +82,9 @@ genX_bits_included_symbols = [
'RT_DISPATCH_GLOBALS::Hit Group Table',
'RT_DISPATCH_GLOBALS::Miss Group Table',
'RT_DISPATCH_GLOBALS::Callable Group Table',
'RT_DISPATCH_GLOBALS::Hit Group Stride',
'RT_DISPATCH_GLOBALS::Miss Group Stride',
'RT_DISPATCH_GLOBALS::Callable Group Stride',
'RT_DISPATCH_GLOBALS::Launch Width',
'RT_DISPATCH_GLOBALS::Launch Height',
'RT_DISPATCH_GLOBALS::Launch Depth',

78
src/intel/vulkan/genX_cmd_compute.c
View file

@ -1030,6 +1030,7 @@ cmd_buffer_emit_rt_dispatch_globals(struct anv_cmd_buffer *cmd_buffer,
return rtdg_state;
}
#if GFX_VER < 30
static struct mi_value
mi_build_sbt_entry(struct mi_builder *b,
uint64_t addr_field_addr,
@ -1041,6 +1042,7 @@ mi_build_sbt_entry(struct mi_builder *b,
mi_ishl_imm(b, mi_mem32(anv_address_from_u64(stride_field_addr)),
48));
}
#endif
static struct anv_state
cmd_buffer_emit_rt_dispatch_globals_indirect(struct anv_cmd_buffer *cmd_buffer,
@ -1086,6 +1088,7 @@ cmd_buffer_emit_rt_dispatch_globals_indirect(struct anv_cmd_buffer *cmd_buffer,
/* Fill the MissGroupTable, HitGroupTable & CallableGroupTable fields of
* RT_DISPATCH_GLOBALS using the mi_builder.
*/
#if GFX_VER < 30
mi_store(&b,
mi_mem64(
anv_address_add(
@ -1122,7 +1125,82 @@ cmd_buffer_emit_rt_dispatch_globals_indirect(struct anv_cmd_buffer *cmd_buffer,
params->indirect_sbts_addr +
offsetof(VkTraceRaysIndirectCommand2KHR,
callableShaderBindingTableStride)));
#else
mi_store(&b,
mi_mem64(
anv_address_add(
rtdg_addr,
GENX(RT_DISPATCH_GLOBALS_MissGroupTable_start) / 8)),
mi_mem64(
anv_address_from_u64(
params->indirect_sbts_addr +
offsetof(VkTraceRaysIndirectCommand2KHR,
missShaderBindingTableAddress))));
mi_store(&b,
mi_mem64(
anv_address_add(
rtdg_addr,
GENX(RT_DISPATCH_GLOBALS_HitGroupTable_start) / 8)),
mi_mem64(
anv_address_from_u64(
params->indirect_sbts_addr +
offsetof(VkTraceRaysIndirectCommand2KHR,
hitShaderBindingTableAddress))));
mi_store(&b,
mi_mem64(
anv_address_add(
rtdg_addr,
GENX(RT_DISPATCH_GLOBALS_CallableGroupTable_start) / 8)),
mi_mem64(
anv_address_from_u64(
params->indirect_sbts_addr +
offsetof(VkTraceRaysIndirectCommand2KHR,
callableShaderBindingTableAddress))));
/* The hit and miss group stride on Xe3+ are smashed into the same dword,
* along with the max bvh levels.
*/
struct mi_value hit_stride_bits =
mi_ishl_imm(&b,
mi_iand(&b,
mi_mem32(
anv_address_from_u64(
params->indirect_sbts_addr +
offsetof(VkTraceRaysIndirectCommand2KHR,
hitShaderBindingTableStride))),
mi_imm(BITFIELD_MASK(13))),
GENX(RT_DISPATCH_GLOBALS_HitGroupStride_start) % 32);
struct mi_value miss_stride_bits =
mi_ishl_imm(&b,
mi_iand(&b,
mi_mem32(
anv_address_from_u64(
params->indirect_sbts_addr +
offsetof(VkTraceRaysIndirectCommand2KHR,
missShaderBindingTableStride))),
mi_imm(BITFIELD_MASK(13))),
GENX(RT_DISPATCH_GLOBALS_MissGroupStride_start) % 32);
mi_store(&b,
mi_mem32(
anv_address_add(
rtdg_addr,
GENX(RT_DISPATCH_GLOBALS_HitGroupStride_start) / 32 * 4)),
mi_ior(&b,
mi_ior(&b, hit_stride_bits, miss_stride_bits),
mi_imm(BRW_RT_MAX_BVH_LEVELS)));
mi_store(&b,
mi_mem32(
anv_address_add(
rtdg_addr,
GENX(RT_DISPATCH_GLOBALS_CallableGroupStride_start) / 8)),
mi_iand(&b,
mi_mem32(
anv_address_from_u64(
params->indirect_sbts_addr +
offsetof(VkTraceRaysIndirectCommand2KHR,
callableShaderBindingTableStride))),
mi_imm(BITFIELD_MASK(13))));
#endif
return rtdg_state;
}