Structure specifying a triangle geometry in a bottom-level acceleration structure.

Description

If indexType is INDEX_TYPE_NONE_NV, then this structure describes a set of triangles determined by vertexCount. Otherwise, this structure describes a set of indexed triangles determined by indexCount.

Valid Usage

• vertexOffset must be less than the size of vertexData
• vertexOffset must be a multiple of the component size of vertexFormat
• vertexFormat must be one of FORMAT_R32G32B32_SFLOAT, FORMAT_R32G32_SFLOAT, FORMAT_R16G16B16_SFLOAT, FORMAT_R16G16_SFLOAT, FORMAT_R16G16_SNORM, or FORMAT_R16G16B16_SNORM
• vertexStride must be less than or equal to 232-1
• indexOffset must be less than the size of indexData
• indexOffset must be a multiple of the element size of indexType
• indexType must be INDEX_TYPE_UINT16, INDEX_TYPE_UINT32, or INDEX_TYPE_NONE_NV
• indexData must be NULL_HANDLE if indexType is INDEX_TYPE_NONE_NV
• indexData must be a valid VkBuffer handle if indexType is not INDEX_TYPE_NONE_NV
• indexCount must be 0 if indexType is INDEX_TYPE_NONE_NV
• transformOffset must be less than the size of transformData
• transformOffset must be a multiple of 16

Valid Usage (Implicit)

• sType must be STRUCTURE_TYPE_GEOMETRY_TRIANGLES_NV
• pNext must be NULL
• If vertexData is not NULL_HANDLE, vertexData must be a valid VkBuffer handle
• vertexFormat must be a valid VkFormat value
• If indexData is not NULL_HANDLE, indexData must be a valid VkBuffer handle
• indexType must be a valid VkIndexType value
• If transformData is not NULL_HANDLE, transformData must be a valid VkBuffer handle
• Each of indexData, transformData, and vertexData that are valid handles of non-ignored parameters must have been created, allocated, or retrieved from the same VkDevice

See Also

VkGeometryDataNV

Layout

struct VkGeometryTrianglesNV {
    VkStructureType sType;
    void const * pNext;
    VkBuffer vertexData;
    VkDeviceSize vertexOffset;
    uint32_t vertexCount;
    VkDeviceSize vertexStride;
    VkFormat vertexFormat;
    VkBuffer indexData;
    VkDeviceSize indexOffset;
    uint32_t indexCount;
    VkIndexType indexType;
    VkBuffer transformData;
    VkDeviceSize transformOffset;
}