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kk: Support VK_(KHR/EXT)_index_type_uint8
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Browse source 
Simple implementation which takes advantage of poly geometry unrolling.

Reviewed-by: Aitor Camacho <aitor@lunarg.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41333>
This commit is contained in:
squidbus 2026-04-23 17:33:52 -07:00 • committed by Marge Bot
parent ef6a6f28a8
commit 6cd9877ac9
3 changed files with 9 additions and 2 deletions
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4
docs/features.txt
View file

@ -521,7 +521,7 @@ Vulkan 1.4 -- all DONE: anv, hk, lvp, nvk, panvk/v10+, radv/gfx8+, tu/a7xx+, vn
VK_KHR_dynamic_rendering_local_read DONE (anv, lvp, nvk, panvk, radv, tu, vn)
VK_KHR_global_priority DONE (anv, kk, lvp, nvk, panvk, radv, tu, vn)
VK_KHR_index_type_uint8 DONE (anv, lvp, nvk, panvk, pvr, radv, tu, v3dv, vn)
VK_KHR_index_type_uint8 DONE (anv, kk, lvp, nvk, panvk, pvr, radv, tu, v3dv, vn)
VK_KHR_line_rasterization DONE (anv, lvp, nvk, panvk, pvr, radv, tu, v3dv, vn)
VK_KHR_load_store_op_none DONE (anv, kk, lvp, nvk, panvk, radv, tu, v3dv, vn)
VK_KHR_maintenance5 DONE (anv, hasvk, lvp, nvk, panvk/v10+, radv, tu, v3dv, vn)
@ -653,7 +653,7 @@ Khronos extensions that are not part of any Vulkan version:
VK_EXT_image_drm_format_modifier DONE (anv, hasvk, hk, lvp, nvk, panvk, pvr, radv/gfx9+, tu, v3dv, vn)
VK_EXT_image_sliced_view_of_3d DONE (anv, hk, lvp, nvk, radv/gfx10+, vn)
VK_EXT_image_view_min_lod DONE (anv, hasvk, hk, nvk, panvk, radv, tu, vn)
VK_EXT_index_type_uint8 DONE (anv, hasvk, hk, nvk, lvp, panvk, pvr, radv/gfx8+, tu, v3dv, vn)
VK_EXT_index_type_uint8 DONE (anv, hasvk, hk, kk, nvk, lvp, panvk, pvr, radv/gfx8+, tu, v3dv, vn)
VK_EXT_legacy_dithering DONE (anv, panvk, tu, vn)
VK_EXT_legacy_vertex_attributes DONE (anv, lvp, nvk, radv, tu, vn)
VK_EXT_line_rasterization DONE (anv, hasvk, hk, nvk, panvk, pvr, lvp, radv, tu, v3dv, vn)

4
src/kosmickrisp/vulkan/kk_cmd_draw.c
View file

@ -1032,6 +1032,10 @@ kk_dispatch_draw(struct kk_cmd_buffer *cmd, struct kk_draw_data data)
static bool
requires_index_promotion(struct kk_draw_data data)
{
/* uint8_t indices must be promoted since they are not natively supported. */
if (data.index_size == sizeof(uint8_t))
return true;
/* For primitive types that support primitive restart, if restart is disabled
* and the index size is less than uint32_t, we need to make sure to perform
* unrolling as it automatically promotes the type to uint32_t, preventing

3
src/kosmickrisp/vulkan/kk_physical_device.c
View file

@ -116,6 +116,7 @@ kk_get_device_extensions(const struct kk_instance *instance,
/* Vulkan 1.4 */
.KHR_global_priority = true,
.KHR_index_type_uint8 = true,
.KHR_load_store_op_none = true,
.KHR_map_memory2 = true,
.KHR_push_descriptor = true,
@ -124,6 +125,7 @@ kk_get_device_extensions(const struct kk_instance *instance,
.KHR_vertex_attribute_divisor = true,
.EXT_global_priority = true,
.EXT_global_priority_query = true,
.EXT_index_type_uint8 = true,
.EXT_vertex_attribute_divisor = true,
/* Optional extensions */
@ -283,6 +285,7 @@ kk_get_device_features(
/* Vulkan 1.4 */
.globalPriorityQuery = true,
.indexTypeUint8 = true,
.pushDescriptor = true,
.shaderSubgroupRotate = true,
.shaderSubgroupRotateClustered = true,