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vkd3d: Use IndexFormat as a sentinel for indexed RTAS build. 

UE5 seems to only set IndexType to != UNKNOWN when querying RTAS sizes.
This contradicts D3D12 docs, but this matches Vulkan behavior, so do the
same thing. Adds a warn when IBO VA is NULL with non-null format to catch app
bugs.

Signed-off-by: Hans-Kristian Arntzen <post@arntzen-software.no>
This commit is contained in:
Hans-Kristian Arntzen 2022-07-18 17:03:32 +02:00
parent 11c82c84d1
commit 481680ecd8
1 changed files with 4 additions and 1 deletions
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5
libs/vkd3d/acceleration_structure.c
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@ -180,8 +180,11 @@ bool vkd3d_acceleration_structure_convert_inputs(const struct d3d12_device *devi
triangles = &info->geometries[i].geometry.triangles;
triangles->sType = VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_GEOMETRY_TRIANGLES_DATA_KHR;
triangles->indexData.deviceAddress = geom_desc->Triangles.IndexBuffer;
if (geom_desc->Triangles.IndexBuffer)
if (geom_desc->Triangles.IndexFormat != DXGI_FORMAT_UNKNOWN)
{
if (!geom_desc->Triangles.IndexBuffer)
WARN("Application is using IndexBuffer = 0 and IndexFormat != UNKNOWN. Likely application bug.\n");
triangles->indexType =
geom_desc->Triangles.IndexFormat == DXGI_FORMAT_R16_UINT ?
VK_INDEX_TYPE_UINT16 : VK_INDEX_TYPE_UINT32;