{
    "_comment": [
        "Copyright 2017 The Dawn Authors",
        "",
        "Licensed under the Apache License, Version 2.0 (the \"License\");",
        "you may not use this file except in compliance with the License.",
        "You may obtain a copy of the License at",
        "",
        "    http://www.apache.org/licenses/LICENSE-2.0",
        "",
        "Unless required by applicable law or agreed to in writing, software",
        "distributed under the License is distributed on an \"AS IS\" BASIS,",
        "WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.",
        "See the License for the specific language governing permissions and",
        "limitations under the License."
    ],
    "address mode": {
        "category": "enum",
        "values": [
            {"value": 0, "name":"repeat"},
            {"value": 1, "name":"mirrored repeat"},
            {"value": 2, "name":"clamp to edge"}
        ]
    },
    "attachment descriptor": {
        "category": "structure",
        "extensible": true,
        "members": [
            {"name": "format", "type": "texture format"}
        ]
    },
    "bind group": {
        "category": "object"
    },
    "bind group binding": {
        "category": "structure",
        "extensible": false,
        "members": [
            {"name": "binding", "type": "uint32_t"},
            {"name": "buffer", "type": "buffer", "optional": true},
            {"name": "offset", "type": "uint32_t"},
            {"name": "size", "type": "uint32_t"},
            {"name": "sampler", "type": "sampler", "optional": true},
            {"name": "texture view", "type": "texture view", "optional": true}
        ]
    },
    "bind group descriptor": {
        "category": "structure",
        "extensible": true,
        "members": [
            {"name": "layout", "type": "bind group layout"},
            {"name": "num bindings", "type": "uint32_t"},
            {"name": "bindings", "type": "bind group binding", "annotation": "const*", "length": "num bindings"}
        ]
    },
    "bind group layout": {
        "category": "object"
    },
    "bind group layout binding": {
        "category": "structure",
        "extensible": false,
        "members": [
            {"name": "binding", "type": "uint32_t"},
            {"name": "visibility", "type": "shader stage bit"},
            {"name": "type", "type": "binding type"}
        ]
    },
    "bind group layout descriptor": {
        "category": "structure",
        "extensible": true,
        "members": [
            {"name": "num bindings", "type": "uint32_t"},
            {"name": "bindings", "type": "bind group layout binding", "annotation": "const*", "length": "num bindings"}
        ]
    },
    "binding type": {
        "category": "enum",
        "values": [
            {"value": 0, "name": "uniform buffer"},
            {"value": 1, "name": "sampler"},
            {"value": 2, "name": "sampled texture"},
            {"value": 3, "name": "storage buffer"}
        ]
    },
    "blend descriptor": {
        "category": "structure",
        "extensible": false,
        "members": [
            {"name": "operation", "type": "blend operation"},
            {"name": "src factor", "type": "blend factor"},
            {"name": "dst factor", "type": "blend factor"}
        ]
    },
    "blend factor": {
        "category": "enum",
        "values": [
            {"value": 0, "name": "zero"},
            {"value": 1, "name": "one"},
            {"value": 2, "name": "src color"},
            {"value": 3, "name": "one minus src color"},
            {"value": 4, "name": "src alpha"},
            {"value": 5, "name": "one minus src alpha"},
            {"value": 6, "name": "dst color"},
            {"value": 7, "name": "one minus dst color"},
            {"value": 8, "name": "dst alpha"},
            {"value": 9, "name": "one minus dst alpha"},
            {"value": 10, "name": "src alpha saturated"},
            {"value": 11, "name": "blend color"},
            {"value": 12, "name": "one minus blend color"}
        ]
    },
    "blend operation": {
        "category": "enum",
        "values": [
            {"value": 0, "name": "add"},
            {"value": 1, "name": "subtract"},
            {"value": 2, "name": "reverse subtract"},
            {"value": 3, "name": "min"},
            {"value": 4, "name": "max"}
        ]
    },
    "blend state": {
        "category": "object"
    },
    "blend state builder": {
        "category": "object",
        "methods": [
            {
                "name": "get result",
                "returns": "blend state"
            },
            {
                "name": "set blend enabled",
                "args": [
                    {"name": "blend enabled", "type": "bool"}
                ]
            },
            {
                "name": "set alpha blend",
                "args": [
                    {"name": "alpha blend", "type": "blend descriptor", "annotation": "const*"}
                ]
            },
            {
                "name": "set color blend",
                "args": [
                    {"name": "color blend", "type": "blend descriptor", "annotation": "const*"}
                ]
            },
            {
                "name": "set color write mask",
                "args": [
                    {"name": "color write mask", "type": "color write mask"}
                ]
            }
        ]
    },
    "bool": {
        "category": "native"
    },
    "builder error status": {
        "category": "enum",
        "values": [
            {"value": 0, "name": "success"},
            {"value": 1, "name": "error", "TODO": "cwallez@chromium.org: recoverable errors like GPU OOM"},
            {"value": 2, "name": "unknown"},
            {"value": 3, "name": "context lost"}
        ]
    },
    "builder error callback": {
        "category": "natively defined"
    },
    "buffer": {
        "category": "object",
        "methods": [
            {
                "name": "set sub data",
                "args": [
                    {"name": "start", "type": "uint32_t"},
                    {"name": "count", "type": "uint32_t"},
                    {"name": "data", "type": "uint8_t", "annotation": "const*", "length": "count"}
                ]
            },
            {
                "_comment": "Contrary to set sub data, this is in char size",
                "name": "map read async",
                "args": [
                    {"name": "start", "type": "uint32_t"},
                    {"name": "size", "type": "uint32_t"},
                    {"name": "callback", "type": "buffer map read callback"},
                    {"name": "userdata", "type": "callback userdata"}
                ]
            },
            {
                "_comment": "Contrary to set sub data, this is in char size",
                "name": "map write async",
                "args": [
                    {"name": "start", "type": "uint32_t"},
                    {"name": "size", "type": "uint32_t"},
                    {"name": "callback", "type": "buffer map write callback"},
                    {"name": "userdata", "type": "callback userdata"}
                ]
            },
            {
                "name": "unmap"
            }
        ]
    },
    "buffer builder": {
        "_comment": "This builder is kept for testing only",
        "category": "object",
        "methods": [
            {
                "name": "get result",
                "returns": "buffer"
            },
            {
                "name": "set size",
                "args": [
                    {"name": "size", "type": "uint32_t"}
                ]
            }
        ]
    },
    "buffer copy view": {
        "category": "structure",
        "extensible": true,
        "members": [
            {"name": "buffer", "type": "buffer"},
            {"name": "offset", "type": "uint32_t"},
            {"name": "row pitch", "type": "uint32_t"},
            {"name": "image height", "type": "uint32_t"}
        ]
    },
    "buffer descriptor": {
        "category": "structure",
        "extensible": true,
        "members": [
            {"name": "usage", "type": "buffer usage bit"},
            {"name": "size", "type": "uint32_t"}
        ]
    },
    "buffer map read callback": {
        "category": "natively defined"
    },
    "buffer map write callback": {
        "category": "natively defined"
    },
    "buffer map async status": {
        "category": "enum",
        "values": [
            {"value": 0, "name": "success"},
            {"value": 1, "name": "error"},
            {"value": 2, "name": "unknown"},
            {"value": 3, "name": "context lost"}
        ]
    },
    "buffer usage bit": {
        "category": "bitmask",
        "values": [
            {"value": 0, "name": "none"},
            {"value": 1, "name": "map read"},
            {"value": 2, "name": "map write"},
            {"value": 4, "name": "transfer src"},
            {"value": 8, "name": "transfer dst"},
            {"value": 16, "name": "index"},
            {"value": 32, "name": "vertex"},
            {"value": 64, "name": "uniform"},
            {"value": 128, "name": "storage"}
        ]
    },
    "callback userdata": {
        "category": "natively defined"
    },
    "char": {
        "category": "native"
    },
    "color write mask": {
        "category": "bitmask",
        "values": [
            {"value": 0, "name": "none"},
            {"value": 1, "name": "red"},
            {"value": 2, "name": "green"},
            {"value": 4, "name": "blue"},
            {"value": 8, "name": "alpha"},
            {"value": 15, "name": "all"}
        ]
    },
    "command buffer": {
        "category": "object"
    },
    "command buffer builder": {
        "category": "object",
        "methods": [
            {
                "name": "get result",
                "returns": "command buffer"
            },
            {
                "name": "begin compute pass",
                "returns": "compute pass encoder"
            },
            {
                "name": "begin render pass",
                "args": [
                    {"name": "info", "type": "render pass descriptor"}
                ],
                "returns": "render pass encoder"
            },
            {
                "name": "copy buffer to buffer",
                "args": [
                    {"name": "source", "type": "buffer"},
                    {"name": "source offset", "type": "uint32_t"},
                    {"name": "destination", "type": "buffer"},
                    {"name": "destination offset", "type": "uint32_t"},
                    {"name": "size", "type": "uint32_t"}
                ],
                "TODO": [
                    "Restrictions on the alignment of the copy? Cf Metal on OSX"
                ]
            },
            {
                "name": "copy buffer to texture",
                "args": [
                    {"name": "source", "type": "buffer copy view", "annotation": "const*"},
                    {"name": "destination", "type": "texture copy view", "annotation": "const*"},
                    {"name": "copy size", "type": "extent 3D", "annotation": "const*"}
                ]
            },
            {
                "name": "copy texture to buffer",
                "args": [
                    {"name": "source", "type": "texture copy view", "annotation": "const*"},
                    {"name": "destination", "type": "buffer copy view", "annotation": "const*"},
                    {"name": "copy size", "type": "extent 3D", "annotation": "const*"}
                ]
            }
        ]
    },
    "compare function": {
        "category": "enum",
        "values": [
            {"value": 0, "name": "never"},
            {"value": 1, "name": "less"},
            {"value": 2, "name": "less equal"},
            {"value": 3, "name": "greater"},
            {"value": 4, "name": "greater equal"},
            {"value": 5, "name": "equal"},
            {"value": 6, "name": "not equal"},
            {"value": 7, "name": "always"}
        ]
    },
    "compute pass encoder": {
        "category": "object",
        "methods": [
            {
                "name": "set compute pipeline",
                "TODO": "This is called setPipeline in the WebGPU IDL",
                "args": [
                    {"name": "pipeline", "type": "compute pipeline"}
                ]
            },
            {
                "name": "set push constants",
                "TODO": [
                    "data should be void*",
                    "TODO Vulkan has an additional stage mask"
                ],
                "args": [
                    {"name": "stages", "type": "shader stage bit"},
                    {"name": "offset", "type": "uint32_t"},
                    {"name": "count", "type": "uint32_t"},
                    {"name": "data", "type": "uint32_t", "annotation": "const*", "length": "count"}
                ]
            },
            {
                "name": "set bind group",
                "args": [
                    {"name": "group index", "type": "uint32_t"},
                    {"name": "group", "type": "bind group"}
                ]
            },
            {
                "name": "dispatch",
                "args": [
                    {"name": "x", "type": "uint32_t"},
                    {"name": "y", "type": "uint32_t"},
                    {"name": "z", "type": "uint32_t"}
                ]
            },
            {
                "name": "end pass",
                "TODO": "This returns the top-level encoder in the WebGPU IDL"
            }
        ]
    },
    "compute pipeline": {
        "category": "object"
    },
    "compute pipeline descriptor": {
        "category": "structure",
        "extensible": true,
        "members": [
            {"name": "layout", "type": "pipeline layout"},
            {"name": "module", "type": "shader module"},
            {"name": "entry point", "type": "char", "annotation": "const*", "length": "strlen"}
        ]
    },
    "device": {
        "category": "object",
        "methods": [
            {
                "name": "create bind group",
                "returns": "bind group",
                "args": [
                    {"name": "descriptor", "type": "bind group descriptor", "annotation": "const*"}
                ]
            },
            {
                "name": "create bind group layout",
                "returns": "bind group layout",
                "args": [
                    {"name": "descriptor", "type": "bind group layout descriptor", "annotation": "const*"}
                ]
            },
            {
                "name": "create blend state builder",
                "returns": "blend state builder"
            },
            {
                "name": "create buffer",
                "returns": "buffer",
                "args": [
                    {"name": "descriptor", "type": "buffer descriptor", "annotation": "const*"}
                ]
            },
            {
                "name": "create buffer builder for testing",
                "returns": "buffer builder"
            },
            {
                "name": "create command buffer builder",
                "returns": "command buffer builder"
            },
            {
                "name": "create depth stencil state builder",
                "returns": "depth stencil state builder"
            },
            {
                "name": "create fence",
                "returns": "fence",
                "args": [
                    {"name": "descriptor", "type": "fence descriptor", "annotation": "const*"}
                ]
            },
            {
                "name": "create render pass descriptor builder",
                "returns": "render pass descriptor builder"
            },
            {
                "name": "create input state builder",
                "returns": "input state builder"
            },
            {
                "name": "create compute pipeline",
                "returns": "compute pipeline",
                "args": [
                    {"name": "descriptor", "type": "compute pipeline descriptor", "annotation": "const*"}
                ]
            },
            {
                "name": "create render pipeline",
                "returns": "render pipeline",
                "args": [
                    {"name": "descriptor", "type": "render pipeline descriptor", "annotation": "const*"}
                ]
            },
            {
                "name": "create pipeline layout",
                "returns": "pipeline layout",
                "args": [
                    {"name": "descriptor", "type": "pipeline layout descriptor", "annotation": "const*"}
                ]
            },
            {
                "name": "create queue",
                "returns": "queue"
            },
            {
                "name": "create sampler",
                "returns": "sampler",
                "args": [
                    {"name": "descriptor", "type": "sampler descriptor", "annotation": "const*"}
                ]
            },
            {
                "name": "create shader module",
                "returns": "shader module",
                "args": [
                    {"name": "descriptor", "type": "shader module descriptor", "annotation": "const*"}
                ]
            },
            {
                "name": "create swap chain builder",
                "returns": "swap chain builder"
            },
            {
                "name": "create texture",
                "returns": "texture",
                "args": [
                    {"name": "descriptor", "type": "texture descriptor", "annotation": "const*"}
                ]
            },
            {
                "name": "tick"
            },
            {
                "name": "set error callback",
                "args": [
                    {"name": "callback", "type": "device error callback"},
                    {"name": "userdata", "type": "callback userdata"}
                ]
            }
        ]
    },
    "depth stencil state": {
        "category": "object"
    },
    "depth stencil state builder": {
        "category": "object",
        "methods": [
            {
                "name": "get result",
                "returns": "depth stencil state"
            },
            {
                "name": "set depth compare function",
                "args": [
                    {"name": "depth compare function", "type": "compare function"}
                ]
            },
            {
                "name": "set depth write enabled",
                "args" : [
                    {"name": "enabled", "type": "bool"}
                ]
            },
            {
                "name": "set stencil function",
                "args": [
                    {"name": "face", "type": "face"},
                    {"name": "stencil compare function", "type": "compare function"},
                    {"name": "stencil failure operation", "type": "stencil operation"},
                    {"name": "depth failure operation", "type": "stencil operation"},
                    {"name": "stencil pass operation", "type": "stencil operation"}
                ]
            },
            {
                "name": "set stencil mask",
                "args": [
                    {"name": "read mask", "type": "uint32_t"},
                    {"name": "write mask", "type": "uint32_t"}
                ]
            }
        ]
    },
    "device error callback": {
        "category": "natively defined"
    },
    "extent 3D": {
        "category": "structure",
        "members": [
            {"name": "width", "type": "uint32_t"},
            {"name": "height", "type": "uint32_t"},
            {"name": "depth", "type": "uint32_t"}
        ]
    },
    "face": {
        "category": "bitmask",
        "values": [
            {"value": 0, "name": "none"},
            {"value": 1, "name": "back"},
            {"value": 2, "name": "front"},
            {"value": 3, "name": "both"}
        ]
    },
    "fence": {
        "category": "object",
        "methods": [
            {
                "name": "get completed value",
                "returns": "uint64_t"
            },
            {
                "name": "on completion",
                "args": [
                    {"name": "value", "type": "uint64_t"},
                    {"name": "callback", "type": "fence on completion callback"},
                    {"name": "userdata", "type": "callback userdata"}
                ]
            }
        ]
    },
    "fence on completion callback": {
        "category": "natively defined"
    },
    "fence completion status": {
        "category": "enum",
        "values": [
            {"value": 0, "name": "success"},
            {"value": 1, "name": "error"},
            {"value": 2, "name": "unknown"},
            {"value": 3, "name": "context lost"}
        ]
    },
    "fence descriptor": {
        "category": "structure",
        "extensible": true,
        "members": [
            {"name": "initial value", "type": "uint64_t"}
        ]
    },
    "filter mode": {
        "category": "enum",
        "values": [
            {"value": 0, "name":"nearest"},
            {"value": 1, "name":"linear"}
        ]
    },
    "float": {
        "category": "native"
    },
    "index format": {
        "category": "enum",
        "values": [
            {"value": 0, "name": "uint16"},
            {"value": 1, "name": "uint32"}
        ]
    },
    "input state": {
        "category": "object"
    },
    "input state builder": {
        "category": "object",
        "methods": [
            {
                "name": "get result",
                "returns": "input state"
            },
            {
                "name": "set attribute",
                "args": [
                    {"name": "shader location", "type": "uint32_t"},
                    {"name": "binding slot", "type": "uint32_t"},
                    {"name": "format", "type": "vertex format"},
                    {"name": "offset", "type": "uint32_t"}
                ]
            },
            {
                "name": "set input",
                "args": [
                    {"name": "binding slot", "type": "uint32_t"},
                    {"name": "stride", "type": "uint32_t"},
                    {"name": "step mode", "type": "input step mode"}
                ]
            }
        ]
    },
    "input step mode": {
        "category": "enum",
        "values": [
            {"value": 0, "name": "vertex"},
            {"value": 1, "name": "instance"}
        ]
    },
    "load op": {
        "category": "enum",
        "values": [
            {"value": 0, "name": "clear"},
            {"value": 1, "name": "load"}
        ]
    },
    "origin 3D": {
        "category": "structure",
        "members": [
            {"name": "x", "type": "uint32_t"},
            {"name": "y", "type": "uint32_t"},
            {"name": "z", "type": "uint32_t"}
        ]
    },
    "attachments state descriptor": {
        "category": "structure",
        "extensible": true,
        "members": [
            {"name": "num color attachments", "type": "uint32_t"},
            {"name": "color attachments", "type": "attachment descriptor", "annotation": "const*", "length": "num color attachments"},
            {"name": "has depth stencil attachment", "type": "bool"},
            {"name": "depth stencil attachment", "type": "attachment descriptor", "annotation":"const*"}
        ]
    },
    "pipeline layout": {
        "category": "object"
    },
    "pipeline layout descriptor": {
        "category": "structure",
        "extensible": true,
        "members": [
            {"name": "num bind group layouts", "type": "uint32_t"},
            {"name": "bind group layouts", "type": "bind group layout", "annotation": "const*", "length": "num bind group layouts"}
        ]
    },
    "pipeline stage descriptor": {
        "category": "structure",
        "extensible": true,
        "members": [
            {"name": "module", "type": "shader module"},
            {"name": "entry point", "type": "char", "annotation": "const*", "length": "strlen"}
        ]
    },
    "primitive topology": {
        "category": "enum",
        "values": [
            {"value": 0, "name": "point list"},
            {"value": 1, "name": "line list"},
            {"value": 2, "name": "line strip"},
            {"value": 3, "name": "triangle list"},
            {"value": 4, "name": "triangle strip"}
        ]
    },
    "queue": {
        "category": "object",
        "methods": [
            {
                "name": "submit",
                "args": [
                    {"name": "num commands", "type": "uint32_t"},
                    {"name": "commands", "type": "command buffer", "annotation": "const*", "length": "num commands"}
                ]
            },
            {
                "name": "signal",
                "args": [
                    {"name": "fence", "type": "fence"},
                    {"name": "signal value", "type": "uint64_t"}
                ]
            }
        ]
    },
    "render pass descriptor builder": {
        "category": "object",
        "methods": [
            {
                "name": "get result",
                "returns": "render pass descriptor"
            },
            {
                "name": "set color attachment",
                "args": [
                    {"name": "attachment slot", "type": "uint32_t"},
                    {"name": "texture view", "type": "texture view"},
                    {"name": "load op", "type": "load op"}
                ]
            },
            {
                "name": "set color attachment clear color",
                "TODO": "determine where to put these methods (probably BeginRenderPass?)",
                "args": [
                    {"name": "attachment slot", "type": "uint32_t"},
                    {"name": "clear r", "type": "float"},
                    {"name": "clear g", "type": "float"},
                    {"name": "clear b", "type": "float"},
                    {"name": "clear a", "type": "float"}
                ]
            },
            {
                "name": "set depth stencil attachment",
                "args": [
                    {"name": "texture view", "type": "texture view"},
                    {"name": "depth load op", "type": "load op"},
                    {"name": "stencil load op", "type": "load op"}
                ]
            },
            {
                "name": "set depth stencil attachment clear value",
                "TODO": "determine where to put these methods (probably BeginRenderPass?)",
                "args": [
                    {"name": "clear depth", "type": "float"},
                    {"name": "clear stencil", "type": "uint32_t"}
                ]
            }
        ]
    },
    "render pass descriptor": {
        "category": "object"
    },
    "render pass encoder": {
        "category": "object",
        "methods": [
            {
                "name": "set render pipeline",
                "TODO": "This is called setPipeline in the WebGPU IDL",
                "args": [
                    {"name": "pipeline", "type": "render pipeline"}
                ]
            },
            {
                "name": "set push constants",
                "TODO": [
                    "data should be void*",
                    "TODO Vulkan has an additional stage mask"
                ],
                "args": [
                    {"name": "stages", "type": "shader stage bit"},
                    {"name": "offset", "type": "uint32_t"},
                    {"name": "count", "type": "uint32_t"},
                    {"name": "data", "type": "uint32_t", "annotation": "const*", "length": "count"}
                ]
            },
            {
                "name": "set bind group",
                "args": [
                    {"name": "group index", "type": "uint32_t"},
                    {"name": "group", "type": "bind group"}
                ]
            },
            {
                "name": "draw",
                "args": [
                    {"name": "vertex count", "type": "uint32_t"},
                    {"name": "instance count", "type": "uint32_t"},
                    {"name": "first vertex", "type": "uint32_t"},
                    {"name": "first instance", "type": "uint32_t"}
                ]
            },
            {
                "name": "draw indexed",
                "args": [
                    {"name": "index count", "type": "uint32_t"},
                    {"name": "instance count", "type": "uint32_t"},
                    {"name": "first index", "type": "uint32_t"},
                    {"name": "first instance", "type": "uint32_t"}
                ]
            },
            {
                "name": "set stencil reference",
                "args": [
                    {"name": "reference", "type": "uint32_t"}
                ]
            },
            {
                "name": "set blend color",
                "args": [
                    {"name": "r", "type": "float"},
                    {"name": "g", "type": "float"},
                    {"name": "b", "type": "float"},
                    {"name": "a", "type": "float"}
                ]
            },
            {
                "name": "set scissor rect",
                "args": [
                    {"name": "x", "type": "uint32_t"},
                    {"name": "y", "type": "uint32_t"},
                    {"name": "width", "type": "uint32_t"},
                    {"name": "height", "type": "uint32_t"}
                ]
            },
            {
                "name": "set vertex buffers",
                "args": [
                    {"name": "start slot", "type": "uint32_t"},
                    {"name": "count", "type": "uint32_t"},
                    {"name": "buffers", "type": "buffer", "annotation": "const*", "length": "count"},
                    {"name": "offsets", "type": "uint32_t", "annotation": "const*", "length": "count"}
                ]
            },
            {
                "name": "set index buffer",
                "args": [
                    {"name": "buffer", "type": "buffer"},
                    {"name": "offset", "type": "uint32_t"}
                ]
            },
            {
                "name": "end pass",
                "TODO": "This returns the top-level encoder in the WebGPU IDL"
            }
        ]
    },
    "render pipeline": {
        "category": "object"
    },
    "render pipeline descriptor": {
        "category": "structure",
        "extensible": true,
        "members": [
            {"name": "layout", "type": "pipeline layout"},
            {"name": "vertex stage", "type": "pipeline stage descriptor", "annotation": "const*"},
            {"name": "fragment stage", "type": "pipeline stage descriptor", "annotation": "const*"},
            {"name": "input state", "type": "input state"},
            {"name": "index format", "type": "index format"},
            {"name": "primitive topology", "type": "primitive topology"},
            {"name": "attachments state", "type": "attachments state descriptor", "annotation": "const*"},
            {"name": "sample count", "type": "uint32_t"},
            {"name": "depth stencil state", "type": "depth stencil state"},
            {"name": "num blend states", "type": "uint32_t"},
            {"name": "blend states", "type": "blend state", "annotation": "const*", "length": "num blend states"}
        ]
    },
    "sampler": {
        "category": "object"
    },
    "sampler descriptor": {
        "category": "structure",
        "extensible": true,
        "members": [
            {"name": "mag filter", "type": "filter mode"},
            {"name": "min filter", "type": "filter mode"},
            {"name": "mipmap filter", "type": "filter mode"},
            {"name": "address mode u", "type": "address mode"},
            {"name": "address mode v", "type": "address mode"},
            {"name": "address mode w", "type": "address mode"}
        ]
    },
    "shader module": {
        "category": "object"
    },
    "shader module descriptor": {
        "category": "structure",
        "extensible": true,
        "members": [
            {"name": "code size", "type": "uint32_t"},
            {"name": "code", "type": "uint32_t", "annotation": "const*", "length": "code size"}
        ]
    },
    "shader stage": {
        "category": "enum",
        "values": [
            {"value": 0, "name": "vertex"},
            {"value": 1, "name": "fragment"},
            {"value": 2, "name": "compute"}
        ]
    },
    "shader stage bit": {
        "category": "bitmask",
        "values": [
            {"value": 0, "name": "none"},
            {"value": 1, "name": "vertex"},
            {"value": 2, "name": "fragment"},
            {"value": 4, "name": "compute"}
        ]
    },
    "stencil operation": {
        "category": "enum",
        "values": [
            {"value": 0, "name": "keep"},
            {"value": 1, "name": "zero"},
            {"value": 2, "name": "replace"},
            {"value": 3, "name": "invert"},
            {"value": 4, "name": "increment clamp"},
            {"value": 5, "name": "decrement clamp"},
            {"value": 6, "name": "increment wrap"},
            {"value": 7, "name": "decrement wrap"}
        ]
    },
    "swap chain": {
        "category": "object",
        "methods": [
            {
                "name": "configure",
                "args": [
                    {"name": "format", "type": "texture format"},
                    {"name": "allowed usage", "type": "texture usage bit"},
                    {"name": "width", "type": "uint32_t"},
                    {"name": "height", "type": "uint32_t"}
                ]
            },
            {
                "name": "get next texture",
                "returns": "texture"
            },
            {
                "name": "present",
                "args": [
                    {"name": "texture", "type": "texture"}
                ]
            }
        ]
    },
    "swap chain builder": {
        "category": "object",
        "methods": [
            {
                "name": "get result",
                "returns": "swap chain"
            },
            {
                "name": "set implementation",
                "args": [
                    {"name": "implementation", "type": "uint64_t"}
                ]
            }
        ]
    },
    "texture": {
        "category": "object",
        "methods": [
            {
                "name": "create default texture view",
                "returns": "texture view"
            },
            {
                "name": "create texture view",
                "returns": "texture view",
                "args": [
                    {"name": "descriptor", "type": "texture view descriptor", "annotation": "const*"}
                ]
            }
        ]
    },
    "texture aspect": {
        "category": "bitmask",
        "values": [
            {"value": 1, "name": "color"},
            {"value": 2, "name": "depth"},
            {"value": 4, "name": "stencil"}
        ]
    },
    "texture copy view": {
        "category": "structure",
        "extensible": true,
        "members": [
            {"name": "texture", "type": "texture"},
            {"name": "level", "type": "uint32_t"},
            {"name": "slice", "type": "uint32_t"},
            {"name": "origin", "type": "origin 3D"},
            {"name": "aspect", "type": "texture aspect"}
        ]
    },
    "texture descriptor": {
        "category": "structure",
        "extensible": true,
        "members": [
            {"name": "usage", "type": "texture usage bit"},
            {"name": "dimension", "type": "texture dimension"},
            {"name": "size", "type": "extent 3D"},
            {"name": "array layer", "type": "uint32_t"},
            {"name": "format", "type": "texture format"},
            {"name": "level count", "type": "uint32_t"}
        ]
    },
    "texture dimension": {
        "category": "enum",
        "values": [
            {"value": 0, "name": "2D"}
        ]
    },
    "texture format": {
        "category": "enum",
        "values": [
            {"value": 0, "name": "r8 g8 b8 a8 unorm"},
            {"value": 1, "name": "r8 g8 unorm"},
            {"value": 2, "name": "r8 unorm"},
            {"value": 3, "name": "r8 g8 b8 a8 uint"},
            {"value": 4, "name": "r8 g8 uint"},
            {"value": 5, "name": "r8 uint"},
            {"value": 6, "name": "b8 g8 r8 a8 unorm"},
            {"value": 7, "name": "d32 float s8 uint"}
        ]
    },
    "texture usage bit": {
        "category": "bitmask",
        "values": [
            {"value": 0, "name": "none"},
            {"value": 1, "name": "transfer src"},
            {"value": 2, "name": "transfer dst"},
            {"value": 4, "name": "sampled"},
            {"value": 8, "name": "storage"},
            {"value": 16, "name": "output attachment"},
            {"value": 32, "name": "present"}
        ]
    },
    "texture view descriptor": {
        "category": "structure",
        "extensible": true,
        "members": [
            {"name": "format", "type": "texture format"},
            {"name": "dimension", "type": "texture view dimension"},
            {"name": "base mip level", "type": "uint32_t"},
            {"name": "level count", "type": "uint32_t"},
            {"name": "base array layer", "type": "uint32_t"},
            {"name": "layer count", "type": "uint32_t"}
        ],
        "TODO": [
            "jiawei.shao@intel.com: Allow choosing the aspect (depth vs. stencil)"
        ]
    },
    "texture view": {
        "category": "object"
    },
    "texture view dimension": {
        "category": "enum",
        "values": [
            {"value": 0, "name": "2D"},
            {"value": 1, "name": "2D array"},
            {"value": 2, "name": "cube"},
            {"value": 3, "name": "cube array"}
        ],
        "TODO": [
            "jiawei.shao@intel.com: support 1D and 3D texture views"
        ]
    },
    "vertex format": {
        "category": "enum",
        "values": [
            {"value": 0,  "name": "float r32 g32 b32 a32"},
            {"value": 1,  "name": "float r32 g32 b32"},
            {"value": 2,  "name": "float r32 g32"},
            {"value": 3,  "name": "float r32"},
            {"value": 4,  "name": "int r32 g32 b32 a32"},
            {"value": 5,  "name": "int r32 g32 b32"},
            {"value": 6,  "name": "int r32 g32"},
            {"value": 7,  "name": "int r32"},
            {"value": 8,  "name": "ushort r16 g16 b16 a16"},
            {"value": 9,  "name": "ushort r16 g16"},
            {"value": 10, "name": "unorm r8 g8 b8 a8"},
            {"value": 11, "name": "unorm r8 g8"}
        ]
    },
    "void": {
        "category": "native"
    },
    "uint32_t": {
        "category": "native"
    },
    "uint64_t": {
        "category": "native"
    },
    "uint8_t": {
        "category": "native"
    }
}