### VulkanSpec

Going from the XML to the IR is fairly independent of the code generation process, and has been isolated into its own module (VulkanSpec).

VulkanGen.VulkanSpec.CreateFuncType

Function func that creates a handle from a create info structure create_info_struct passed as the value of the parameter create_info_param.

If batch is true, then func expects a list of multiple create info structures and will create multiple handles at once.

struct CreateFunc <: Spec
• func::SpecFunc

• handle::SpecHandle

• create_info_struct::Union{Nothing, SpecStruct}

• create_info_param::Union{Nothing, SpecFuncParam}

• batch::Bool

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VulkanGen.VulkanSpec.DestroyFuncType

Function func that destroys a handle passed as the value of the parameter destroyed_param.

If batch is true, then func expects a list of multiple handles and will destroy all of them at once.

struct DestroyFunc <: Spec
• func::SpecFunc

• handle::SpecHandle

• destroyed_param::SpecFuncParam

• batch::Bool

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VulkanGen.VulkanSpec.FieldIteratorType

Iterate through function or struct specification fields from a list of fields. list is a sequence of fields to get through from root.

struct FieldIterator
• root::Any

• list::Any

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VulkanGen.VulkanSpec.FunctionTypeType

Function type classification.

Types:

• FTYPE_CREATE: constructor (functions that begin with vkCreate).
• FTYPE_DESTROY: destructor (functions that begin with vkDestroy).
• FTYPE_ALLOCATE: allocator (functions that begin with vkAllocate).
• FTYPE_FREE: deallocator (functions that begin with vkFree).
• FTYPE_COMMAND: Vulkan command (functions that begin with vkCmd).
• FTYPE_QUERY: used to query parameters, returned directly or indirectly through pointer mutation (typically, functions that begin with vkEnumerate and vkGet, but not all of them and possibly others).
• FTYPE_OTHER: no identified type.
primitive type FunctionType <: Enum{Int32} 32
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VulkanGen.VulkanSpec.PARAM_REQUIREMENTType

Parameter requirement. Applies both to struct members and function parameters.

Requirement types:

• OPTIONAL: may have its default zero (or nullptr) value, acting as a sentinel value (similar to Nothing in Julia).
• REQUIRED: must be provided, no sentinel value is allowed.
• POINTER_OPTIONAL: is a pointer which may be null, but must have valid elements if provided.
• POINTER_REQUIRED: must be a valid pointer, but its elements are optional (e.g. are allowed to be sentinel values).
primitive type PARAM_REQUIREMENT <: Enum{Int32} 32
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VulkanGen.VulkanSpec.SpecBitType

Specification for a bit used in a bitmask.

struct SpecBit <: Spec
• name::Symbol

Name of the bit.

• position::Int64

Position of the bit.

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VulkanGen.VulkanSpec.SpecBitmaskType

Specification for a bitmask type that must be formed through a combination of bits.

Is usually an alias for a UInt32 type which carries meaning through its bits.

struct SpecBitmask <: Spec
• name::Symbol

• bits::StructArrays.StructVector{SpecBit}

Valid bits that can be combined to form the final bitmask value.

• combinations::StructArrays.StructVector{SpecBitCombination}

• width::Integer

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VulkanGen.VulkanSpec.SpecEnumType

Specification for an enumeration type.

struct SpecEnum <: Spec
• name::Symbol

Name of the enumeration type.

• enums::StructArrays.StructVector{SpecConstant}

Vector of possible enumeration values.

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VulkanGen.VulkanSpec.SpecFlagType

Specification for a flag type name that is a type alias of typealias. Can be associated with a bitmask structure, in which case the bitmask number is set to the corresponding SpecBitmask.

struct SpecFlag <: Spec
• name::Symbol

Name of the flag type.

• typealias::Symbol

The type it aliases.

• bitmask::Union{Nothing, SpecBitmask}

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VulkanGen.VulkanSpec.SpecFuncType

Specification for a function.

struct SpecFunc <: Spec
• name::Symbol

Name of the function.

• type::FunctionType

FunctionType classification.

• return_type::Union{Nothing, Expr, Symbol}

Return type (void if Nothing).

• render_pass_compatibility::Vector{RenderPassRequirement}

Whether the function can be executed inside a render pass, outside, or both. Empty if not specified, in which case it is equivalent to both inside and outside.

• queue_compatibility::Vector{QueueType}

Type of queues on which the function can be executed. Empty if not specified, in which case it is equivalent to being executable on all queues.

• params::StructArrays.StructVector{SpecFuncParam}

Function parameters.

• success_codes::Vector{Symbol}

• error_codes::Vector{Symbol}

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VulkanGen.VulkanSpec.SpecFuncParamType

Specification for a function parameter.

struct SpecFuncParam <: Spec
• func::Symbol

Name of the parent function.

• name::Symbol

Identifier.

• type::Union{Expr, Symbol}

Expression of its idiomatic Julia type.

• is_constant::Bool

If constant, cannot be mutated by Vulkan functions.

• is_externsync::Bool

Whether it must be externally synchronized before calling the function.

• requirement::PARAM_REQUIREMENT

PARAM_REQUIREMENT classification.

• len::Union{Nothing, Symbol}

Name of the parameter (of the same function) which represents its length. Nothing for non-vector types.

• arglen::Vector{Symbol}

Name of the parameters (of the same function) it is a length of.

• autovalidity::Bool

Whether automatic validity documentation is enabled. If false, this means that the parameter may be an exception to at least one Vulkan convention.

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VulkanGen.VulkanSpec.SpecHandleType

Specification for handle types.

A handle may possess a parent. In this case, the handle can only be valid if its parent is valid.

Some handles are dispatchable, which means that they are represented as opaque pointers. Non-dispatchable handles are 64-bit integer types, and may encode information directly into their value.

struct SpecHandle <: Spec
• name::Symbol

Name of the handle type.

• parent::Union{Nothing, Symbol}

Name of the parent handle, if any.

• is_dispatchable::Bool

Whether the handle is dispatchable or not.

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VulkanGen.VulkanSpec.SpecStructType

Specification for a structure.

struct SpecStruct <: Spec
• name::Symbol

Name of the structure.

• type::StructType

StructType classification.

• is_returnedonly::Bool

Whether the structure is only meant to be filled in by Vulkan functions, as opposed to being constructed by the user.

Note that the API may still request the user to provide an initialized structure, notably as part of pNext chains for queries.

• extends::Vector{Symbol}

Name of the structures it extends, usually done through the original structures' pNext argument.

• members::StructArrays.StructVector{SpecStructMember}

Structure members.

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VulkanGen.VulkanSpec.SpecStructMemberType

Specification for a structure parameter.

struct SpecStructMember <: Spec
• parent::Symbol

Name of the parent structure.

• name::Symbol

Identifier.

• type::Union{Expr, Symbol}

Expression of its idiomatic Julia type.

• is_constant::Bool

If constant, cannot be mutated by Vulkan functions.

• is_externsync::Bool

Whether it must be externally synchronized before calling any function which uses the parent structure.

• requirement::PARAM_REQUIREMENT

PARAM_REQUIREMENT classification.

• len::Union{Nothing, Expr, Symbol}

Name of the member (of the same structure) which represents its length. Nothing for non-vector types.

• arglen::Vector{Union{Expr, Symbol}}

Name of the members (of the same structure) it is a length of.

• autovalidity::Bool

Whether automatic validity documentation is enabled. If false, this means that the member may be an exception to at least one Vulkan convention.

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VulkanGen.VulkanSpec.SpecUnionType

Specification for a union type.

struct SpecUnion <: Spec
• name::Symbol

Name of the union type.

• types::Vector{Union{Expr, Symbol}}

Possible types for the union.

• fields::Vector{Symbol}

Fields which cast the struct into the union types

• selectors::Vector{Symbol}

Selector values, if any, to determine the type of the union in a given context (function call for example).

• is_returnedonly::Bool

Whether the structure is only meant to be filled in by Vulkan functions, as opposed to being constructed by the user.

Note that the API may still request the user to provide an initialized structure, notably as part of pNext chains for queries.

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VulkanGen.VulkanSpec.StructTypeType

Structure type classification.

Types:

• STYPE_CREATE_INFO: holds constructor parameters (structures that end with CreateInfo).
• STYPE_ALLOCATE_INFO: holds allocator parameters (structures that end with AllocateInfo).
• STYPE_GENERIC_INFO: holds parameters for another function or structure (structures that end with Info, excluding those falling into the previous types).
• STYPE_DATA: usually represents user or Vulkan data.
• STYPE_PROPERTY: is a property returned by Vulkan in a returnedonly structure, usually done through FTYPE_QUERY type functions.
primitive type StructType <: Enum{Int32} 32
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VulkanGen.VulkanSpec.translate_c_typeMethod

Semantically translate C types to their Julia counterpart. Note that since it is a semantic translation, translated types do not necessarily have the same layout, e.g. VkBool32 => Bool (8 bits).

translate_c_type(ctype) -> Any

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