vulkan/api/templates/vk_xml.tmpl

{{Include "vulkan_common.tmpl"}}
{{Macro "DefineGlobals" $}}
{{$ | Macro "vk.xml" | Reflow 4 | Write "vk.xml"}}


{{/*
-------------------------------------------------------------------------------
  Entry point
-------------------------------------------------------------------------------
*/}}
{{define "vk.xml"}}
<?xml version="1.0" encoding="UTF-8"?>
<registry>
    »<comment>«
Copyright (c) 2015 The Khronos Group Inc.
¶
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and/or associated documentation files (the
"Materials"), to deal in the Materials without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Materials, and to
permit persons to whom the Materials are furnished to do so, subject to
the following conditions:
¶
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Materials.
¶
THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
¶
------------------------------------------------------------------------
¶
This file, vk.xml, is the Vulkan API Registry.»
    </comment>
¶
    <!-- SECTION: Vulkan type definitions -->
    <types>»
        <type name="vk_platform" category="include">#include "vk_platform.h"</type>
¶
        <type category="define">#define <name>VK_MAKE_VERSION</name>(major, minor, patch) \
    «((major &lt;&lt; 22) | (minor &lt;&lt; 12) | patch)</type>»
¶
        <type category="define">// Vulkan API version supported by this file««
#define <name>VK_API_VERSION</name> <type>VK_MAKE_VERSION</type>({{Global "VERSION_MAJOR"}}, {{Global "VERSION_MINOR"}}, {{Global "VERSION_PATCH"}})</type>
¶
        »»<type category="define">««
#if (_MSC_VER &gt;= 1800 || __cplusplus &gt;= 201103L)
#define <name>VK_NONDISP_HANDLE_OPERATOR_BOOL</name>() explicit operator bool() const { return handle != 0; }
#else
#define VK_NONDISP_HANDLE_OPERATOR_BOOL()
«#endif
      »»»</type>
¶
      <type category="define">«««
#define <name>VK_DEFINE_HANDLE</name>(obj) typedef struct obj##_T* obj;</type>
      »»»<type category="define">«««
#if defined(__cplusplus)
    »»#if (_MSC_VER &gt;= 1800 || __cplusplus &gt;= 201103L)
        »// The bool operator only works if there are no implicit conversions from an obj to
        // a bool-compatible type, which can then be used to unintentionally violate type safety.
        // C++11 and above supports the "explicit" keyword on conversion operators to stop this
        // from happening. Otherwise users of C++ below C++11 won't get direct access to evaluating
        // the object handle as a bool in expressions like:
        //     if (obj) vkDestroy(obj);
        #define VK_NONDISP_HANDLE_OPERATOR_BOOL() explicit operator bool() const { return handle != 0; }
        #define VK_NONDISP_HANDLE_CONSTRUCTOR_FROM_UINT64(obj) \
            explicit obj(uint64_t x) : handle(x) { } \
            obj(decltype(nullptr)) : handle(0) { }
    «#else»
        #define VK_NONDISP_HANDLE_OPERATOR_BOOL()
        #define VK_NONDISP_HANDLE_CONSTRUCTOR_FROM_UINT64(obj) \
            obj(uint64_t x) : handle(x) { }
    «#endif
    #define <name>VK_DEFINE_NONDISP_HANDLE</name>(obj) \»
        struct obj { \
            obj() { } \
            VK_NONDISP_HANDLE_CONSTRUCTOR_FROM_UINT64(obj) \
            obj&amp; operator =(uint64_t x) { handle = x; return *this; } \
            bool operator==(const obj&amp; other) const { return handle == other.handle; } \
            bool operator!=(const obj&amp; other) const { return handle != other.handle; } \
            bool operator!() const { return !handle; } \
            VK_NONDISP_HANDLE_OPERATOR_BOOL() \
            uint64_t handle; \
        };
««#else
    »#define VK_DEFINE_NONDISP_HANDLE(obj) typedef struct obj##_T { uint64_t handle; } obj;«
#endif
        »»</type>
¶
        <type category="define">
#if defined(__cplusplus) &amp;&amp; ((defined(_MSC_VER) &amp;&amp; _MSC_VER &gt;= 1800) || __cplusplus &gt;= 201103L)
    »#define <name>VK_NULL_HANDLE</name> nullptr
«#else
    »#define VK_NULL_HANDLE 0
«#endif
        »»</type>
¶
        <type requires="vk_platform" name="VkDeviceSize"/>
        <type requires="vk_platform" name="VkSampleMask"/>
        <type requires="vk_platform" name="VkFlags"/>
        <!-- Basic C types, pulled in via vk_platform.h -->
        <type requires="vk_platform" name="char"/>
        <type requires="vk_platform" name="float"/>
        <type requires="vk_platform" name="VkBool32"/>
        <type requires="vk_platform" name="uint8_t"/>
        <type requires="vk_platform" name="uint32_t"/>
        <type requires="vk_platform" name="uint64_t"/>
        <type requires="vk_platform" name="int32_t"/>
        <type requires="vk_platform" name="size_t"/>
        <!-- Bitfield types -->
        {{range $e := $.Enums}}
          {{if $e.IsBitfield}}
            {{$bits := print (Macro "EnumName" $e | TrimRight "s") "Bits"}}
            <type{{if $e.Entries}} requires="{{$bits}}"{{end}} category="bitmask">typedef <type>VkFlags</type> <name>{{$e.Name}}</name>;</type>§
            {{if $e.Entries}}{{Macro "XML.Docs" $e.Docs}}
            {{else}}{{Macro "XML.Docs" (Strings $e.Docs "(no bits yet)")}}
            {{end}}
          {{end}}
        {{end}}
¶
        <!-- Types which can be void pointers or class pointers, selected at compile time -->
        {{range $i, $p := $.Pseudonyms}}
          {{     if (GetAnnotation $p "dispatchHandle")}}
            {{if Global "VK_DEFINE_HANDLE_TYPE_DEFINED"}}
              <type category="handle">VK_DEFINE_HANDLE(<name>{{$p.Name}}</name>)</type>
            {{else}}
              {{Global "VK_DEFINE_HANDLE_TYPE_DEFINED" "YES"}}
              <type category="handle"><type>VK_DEFINE_HANDLE</type>(<name>{{$p.Name}}</name>)</type>
            {{end}}
          {{else if (GetAnnotation $p "nonDispatchHandle")}}
            {{if Global "VK_DEFINE_NONDISP_HANDLE_TYPE_DEFINED"}}
              <type category="handle">VK_DEFINE_NONDISP_HANDLE(<name>{{$p.Name}}</name>)</type>
            {{else}}
              {{Global "VK_DEFINE_NONDISP_HANDLE_TYPE_DEFINED" "YES"}}
              <type category="handle"><type>VK_DEFINE_NONDISP_HANDLE</type>(<name>{{$p.Name}}</name>)</type>
            {{end}}
          {{end}}
        {{end}}
¶
        <!-- Types generated from corresponding <enums> tags below -->
        {{range $e := SortBy $.Enums "EnumName"}}
          {{if and $e.Entries (not (GetAnnotation $e "internal"))}}
            {{if $e.IsBitfield}}
              <type name="{{Macro "EnumName" $e | TrimRight "s"}}Bits" category="enum"/>
            {{else}}
              <type name="{{$e.Name}}" category="enum"/>
            {{end}}
          {{end}}
        {{end}}
¶
        <!-- The PFN_vk*Function types are used by VkAllocCallbacks below -->
        <type>typedef void* (VKAPI *<name>PFN_vkAllocFunction</name>)(«
          void*                           pUserData,
          size_t                          size,
          size_t                          alignment,
          <type>VkSystemAllocType</type>               allocType);</type>»
        <type>typedef void (VKAPI *<name>PFN_vkFreeFunction</name>)(«
          void*                           pUserData,
          void*                           pMem);</type>»
¶
        <!-- The PFN_vkVoidFunction type are used by VkGet*ProcAddr below -->
        <type>typedef void (VKAPI *<name>PFN_vkVoidFunction</name>)(void);</type>
¶
        <!-- Struct types -->
        {{range $c := $.Classes}}
          {{if not (GetAnnotation $c "internal")}}
            {{Macro "Struct" $c}}
          {{end}}
        {{end}}
    «</types>
¶
    <!-- SECTION: Vulkan enumerant (token) definitions. -->
¶
    <enums namespace="VK" comment="Misc. hardcoded constants - not an enumerated type">»
            <!-- This is part of the header boilerplate -->
      {{range $d := $.Definitions}}
        {{if HasPrefix $d.Name "VK_"}}
        <enum value="{{$d.Expression}}"        name="{{$d.Name}}"/>{{Macro "XML.Docs" $d.Docs}}
        {{end}}
      {{end}}
        <enum value="1000.0f"  name="VK_LOD_CLAMP_NONE"/>
        <enum value="(-0U)" name="VK_REMAINING_MIP_LEVELS"/>
        <enum value="(~0U)" name="VK_REMAINING_ARRAY_LAYERS"/>
        <enum value="(_0ULL)" name="VK_WHOLE_SIZE"/>
        <enum value="(~0U)" name="VK_ATTACHMENT_UNUSED"/>
        <enum value="(~0U)" name="VK_QUEUE_FAMILY_IGNORED"/>
        <enum value="(~0U)" name="VK_SUBPASS_EXTERNAL"/>
    «</enums>
¶
    <!-- Unlike OpenGL, most tokens in Vulkan are actual typed enumerants in»
         their own numeric namespaces. The "name" attribute is the C enum
         type name, and is pulled in from a <type> definition above
         (slightly clunky, but retains the type / enum distinction). "type"
         attributes of "enum" or "bitmask" indicate that these values should
         be generated inside an appropriate definition. -->«
¶
    {{range $e := $.Enums}}
      {{if not (or $e.IsBitfield (GetAnnotation $e "internal"))}}
        {{Macro "XML.Enum" $e}}
      {{end}}
    {{end}}
¶
    <!-- Flags -->
    {{range $e := $.Enums}}
      {{if $e.IsBitfield}}
        {{Macro "XML.Bitfield" $e}}
      {{end}}
    {{end}}
¶
    <!-- SECTION: Vulkan command definitions -->
    <commands namespace="vk">»
    {{range $f := AllCommands $}}
      {{if not (GetAnnotation $f "pfn")}}
        {{Macro "XML.Function" $f}}
      {{end}}
    {{end}}
    «</commands>
¶
    <!-- SECTION: Vulkan API interface definitions -->
    <feature api="vulkan" name="VK_VERSION_1_0" number="1.0">»
        <require comment="Header boilerplate">»
            <type name="vk_platform"/>
        «</require>
        <require comment="API version">»
            <type name="VK_API_VERSION"/>
        «</require>
        <require comment="API constants">»
            <enum name="VK_LOD_CLAMP_NONE"/>
            <enum name="VK_REMAINING_MIP_LEVELS"/>
            <enum name="VK_REMAINING_ARRAY_LAYERS"/>
            <enum name="VK_WHOLE_SIZE"/>
            <enum name="VK_ATTACHMENT_UNUSED"/>
            <enum name="VK_TRUE"/>
            <enum name="VK_FALSE"/>
        «</require>
        <require comment="All functions (TODO: split by type)">»
        {{range $f := AllCommands $}}
          {{if not (GetAnnotation $f "pfn")}}
          <command name="{{$f.Name}}"/>
          {{end}}
        {{end}}
        </require>
        «<require comment="Types not directly used by the API">»
            <!-- Include <type name="typename"/> here for e.g. structs that»
                 are not parameter types of commands, but still need to be
                 defined in the API.
             «-->
            <type name="VkBufferMemoryBarrier"/>
            <type name="VkDispatchIndirectCmd"/>
            <type name="VkDrawIndexedIndirectCmd"/>
            <type name="VkDrawIndirectCmd"/>
            <type name="VkImageMemoryBarrier"/>
            <type name="VkMemoryBarrier"/>
        «</require>
    «</feature>
¶
    <!-- SECTION: Vulkan extension interface definitions (none yet) -->
«</registry>
{{end}}

{{/*
-------------------------------------------------------------------------------
  Emits the C declaration for the specified bitfield.
-------------------------------------------------------------------------------
*/}}
{{define "XML.Bitfield"}}
  {{AssertType $ "Enum"}}

  {{if $.Entries}}
  <enums namespace="VK" name="{{Macro "EnumName" $ | TrimRight "s"}}Bits" type="bitmask">»
  {{range $e := $.Entries}}
    {{$pos := Bitpos $e.Value}}
    <enum §
      {{if gt $pos -1}} bitpos="{{$pos}}"    §
      {{else}}value="{{if $e.Value}}{{printf "0x%.8X" $e.Value}}{{else}}0{{end}}"    §
      {{end}}name="{{Macro "BitfieldEntryName" $e}}" §
      {{if $d := $e.Docs}} comment="{{$d | JoinWith "  "}}"{{end}}/>
  {{end}}
  «</enums>
  {{end}}

{{end}}


{{/*
-------------------------------------------------------------------------------
  Emits the C declaration for the specified enum.
-------------------------------------------------------------------------------
*/}}
{{define "XML.Enum"}}
  {{AssertType $ "Enum"}}

  <enums namespace="VK" name="{{Macro "EnumName" $}}" type="enum" §
         expand="{{Macro "EnumName" $ | SplitPascalCase | Upper | JoinWith "_"}}"{{if $.Docs}} comment="{{$.Docs | JoinWith "  "}}"{{end}}>»
  {{range $i, $e := $.Entries}}
    <enum value="{{AsSigned $e.Value}}"     name="{{Macro "BitfieldEntryName" $e}}"{{if $e.Docs}} comment="{{$e.Docs | JoinWith "  "}}"{{end}}/>
  {{end}}
  {{if $lu := GetAnnotation $ "lastUnused"}}
    <unused start="{{index $lu.Arguments 0}}"/>
  {{end}}
  «</enums>
{{end}}


{{/*
-------------------------------------------------------------------------------
  Emits the C declaration for the specified class.
-------------------------------------------------------------------------------
*/}}
{{define "Struct"}}
  {{AssertType $ "Class"}}

  <type category="{{Macro "StructType" $}}" name="{{Macro "StructName" $}}"{{if $.Docs}} comment="{{$.Docs | JoinWith "  "}}"{{end}}>»
    {{range $f := $.Fields}}
    <member>{{Node "XML.Type" $f}}        <name>{{$f.Name}}</name>{{Macro "XML.ArrayPostfix" $f}}</member>{{Macro "XML.Docs" $f.Docs}}
    {{end}}
  «</type>
{{end}}


{{/*
-------------------------------------------------------------------------------
  Emits either 'struct' or 'union' for the specified class.
-------------------------------------------------------------------------------
*/}}
{{define "StructType"}}
  {{AssertType $ "Class"}}

  {{if GetAnnotation $ "union"}}union{{else}}struct{{end}}
{{end}}


{{/*
-------------------------------------------------------------------------------
  Emits the C function pointer typedef declaration for the specified command.
-------------------------------------------------------------------------------
*/}}
{{define "XML.Function"}}
  {{AssertType $ "Function"}}

    {{$ts := GetAnnotation $ "threadSafety"}}
    <command{{if $ts}} threadsafe="{{index $ts.Arguments 0}}"{{end}}>»
        <proto>{{Node "XML.Type" $.Return}} <name>{{$.Name}}</name></proto>
        {{range $p := $.CallParameters}}
          <param>{{Node "XML.Type" $p}} <name>{{$p.Name}}{{Macro "ArrayPostfix" $p}}</name></param>
        {{end}}
    «</command>
{{end}}


{{/*
-------------------------------------------------------------------------------
  Emits the XML translation for the specified documentation block (string array).
-------------------------------------------------------------------------------
*/}}
{{define "XML.Docs"}}
  {{if $}} <!-- {{JoinWith "  " $ | Replace "<" "" | Replace ">" ""}} -->{{end}}
{{end}}

{{/*
-------------------------------------------------------------------------------
  Emits the C translation for the specified type.
-------------------------------------------------------------------------------
*/}}
{{define "XML.Type.Class"      }}<type>{{Macro "StructName" $.Type}}</type>{{end}}
{{define "XML.Type.Pseudonym"  }}<type>{{$.Type.Name}}</type>{{end}}
{{define "XML.Type.Enum"       }}<type>{{$.Type.Name}}</type>{{end}}
{{define "XML.Type.StaticArray"}}{{Node "XML.Type" $.Type.ValueType}}{{end}}
{{define "XML.Type.Pointer"    }}{{if $.Type.Const}}{{Node "XML.ConstType" $.Type.To}}{{else}}{{Node "XML.Type" $.Type.To}}{{end}}*{{end}}
{{define "XML.Type.Slice"      }}<type>{{Node "XML.Type" $.Type.To}}</type>*{{end}}
{{define "XML.Type#s8"         }}<type>int8_t</type>{{end}}
{{define "XML.Type#u8"         }}<type>uint8_t</type>{{end}}
{{define "XML.Type#s16"        }}<type>int16_t</type>{{end}}
{{define "XML.Type#u16"        }}<type>uint16_t</type>{{end}}
{{define "XML.Type#s32"        }}<type>int32_t</type>{{end}}
{{define "XML.Type#u32"        }}<type>uint32_t</type>{{end}}
{{define "XML.Type#f32"        }}<type>float</type>{{end}}
{{define "XML.Type#s64"        }}<type>int64_t</type>{{end}}
{{define "XML.Type#u64"        }}<type>uint64_t</type>{{end}}
{{define "XML.Type#f64"        }}<type>double</type>{{end}}
{{define "XML.Type#char"       }}<type>char</type>{{end}}
{{define "XML.Type#void"       }}void{{end}}

{{define "XML.ConstType_Default"}}const {{Node "XML.Type" $.Type}}{{end}}
{{define "XML.ConstType.Pointer"}}{{Node "XML.Type" $.Type}} const{{end}}


{{/*
-------------------------------------------------------------------------------
  Emits a C type and name for the given parameter
-------------------------------------------------------------------------------
*/}}
{{define "XML.Parameter"}}
  {{AssertType $ "Parameter"}}

  <type>{{Macro "ParameterType" $}}</type> <name>{{$.Name}}{{Macro "ArrayPostfix" $}}</name>
{{end}}

{{/*
-------------------------------------------------------------------------------
  Emits a comma-separated list of C type-name paired parameters for the given
  command.
-------------------------------------------------------------------------------
*/}}
{{define "XML.Parameters"}}
  {{AssertType $ "Function"}}

  {{ForEach $.CallParameters "XML.Parameter" | JoinWith ", "}}
  {{if not $.CallParameters}}<type>void</type>{{end}}
{{end}}


{{/*
-------------------------------------------------------------------------------
  Emits the fixed-size-array postfix for pseudonym types annotated with @array
-------------------------------------------------------------------------------
*/}}
{{define "XML.ArrayPostfix"}}{{Node "XML.ArrayPostfix" $}}{{end}}
{{define "XML.ArrayPostfix.StaticArray"}}[{{Node "XML.NamedValue" $.Type.SizeExpr}}]{{end}}
{{define "XML.ArrayPostfix_Default"}}{{end}}


{{/*
-------------------------------------------------------------------------------
  Emits the value of the given constant, or the <enum> tagged name if existant.
-------------------------------------------------------------------------------
*/}}
{{define "XML.NamedValue.Definition"}}<enum>{{$.Node.Name}}</enum>{{end}}
{{define "XML.NamedValue.EnumEntry"}}<enum>{{$.Node.Name}}</enum>{{end}}
{{define "XML.NamedValue_Default"}}{{$.Node}}{{end}}