{
    "General":{
        "comment":[
            " Copyright 2018 The ANGLE Project Authors. All rights reserved.",
            " Use of this source code is governed by a BSD-style license that can be",
            " found in the LICENSE file.",
            "",
            " The schema of this JSON file is as follows:",
            "",
            " The top-level object contains variable groups. Each group can have the following",
            " properties:",
            "   variables: Object mapping variable names to variable properties.",
            "   subgroups: Object with more groups that fall under the top-level group.",
            "   condition: C++ code determining when these variables should be found from",
            "              the symbol table.",
            " Each variable can have the following properties:",
            "   level: Symbol table level where the variable is contained.",
            "   type: Object with properties of the type. Can be substituted with initDynamicType.",
            "   initDynamicType: Template string with C++ code for initializing a TType * with the",
            "                    name {type_name}. The name will be replaced when generating code.",
            "                    May refer to names of previously listed structs or interface",
            "                    blocks.",
            "   extension: Optional. Name of the extension where this variable is from.",
            "   value: Optional. String that has one valid value: 'resources'. Denotes that the",
            "          value of the variable should be based on the field of ShBuiltInResources",
            "          with the same name as the variable.",
            "   class: Optional. To be used for interface block or struct definitions. Valid",
            "          values are 'TStructure' or 'TInterfaceBlock'.",
            "   fields: Optional. Object to be used for storing fields of interface block and",
            "           struct definitions. Maps field names to field types.",
            "   suffix: Optional. Suffix to give C++ variables storing the properties of this",
            "           variable a unique name that doesn't conflict with C++ keywords.",
            " Each type can have the following properties:",
            "   basic: Basic type as in the TBasicType enum without the Ebt prefix.",
            "   precision: Precision as in TPrecision enum without the Ebp prefix.",
            "   qualifier: Optional. Qualifier as in the TQualifier enum without the Evq prefix.",
            "   primarySize: Optional. Vector size or matrix column count.",
            "   secondarySize: Optional. Matrix row count.",
            " Any group, variable or type can have the property 'comment'."
        ],
        "variables":{
            "gl_DepthRangeParameters":{
                "class":"TStructure",
                "level":"COMMON_BUILTINS",
                "fields":{
                    "near":{
                        "basic":"Float",
                        "precision":"High"
                    },
                    "far":{
                        "basic":"Float",
                        "precision":"High"
                    },
                    "diff":{
                        "basic":"Float",
                        "precision":"High"
                    }
                }
            },
            "gl_DepthRange":{
                "level":"COMMON_BUILTINS",
                "initDynamicType":"TType *{type_name} = new TType(gl_DepthRangeParameters, false); {type_name}->setQualifier(EvqUniform);"
            }
        }
    },
    "Constants":{
        "variables":{
            "gl_MaxVertexAttribs":{
                "level":"COMMON_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxVertexUniformVectors":{
                "level":"COMMON_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxVertexTextureImageUnits":{
                "level":"COMMON_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxCombinedTextureImageUnits":{
                "level":"COMMON_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxTextureImageUnits":{
                "level":"COMMON_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxFragmentUniformVectors":{
                "level":"COMMON_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxVaryingVectors":{
                "level":"ESSL1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxDrawBuffers":{
                "level":"COMMON_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxDualSourceDrawBuffersEXT":{
                "level":"COMMON_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "extension":"EXT_blend_func_extended",
                "value":"resources",
                "valueKey":"MaxDualSourceDrawBuffers"
            },
            "gl_MaxVertexOutputVectors":{
                "level":"ESSL3_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxFragmentInputVectors":{
                "level":"ESSL3_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MinProgramTexelOffset":{
                "level":"ESSL3_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxProgramTexelOffset":{
                "level":"ESSL3_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxImageUnits":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxVertexImageUniforms":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxFragmentImageUniforms":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxComputeImageUniforms":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxCombinedImageUniforms":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxCombinedShaderOutputResources":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxComputeWorkGroupCount":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"High",
                    "qualifier":"Const",
                    "primarySize":3
                },
                "value":"resources"
            },
            "gl_MaxComputeWorkGroupSize":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"High",
                    "qualifier":"Const",
                    "primarySize":3
                },
                "value":"resources"
            },
            "gl_MaxComputeUniformComponents":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxComputeTextureImageUnits":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxComputeAtomicCounters":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxComputeAtomicCounterBuffers":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxVertexAtomicCounters":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxFragmentAtomicCounters":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxCombinedAtomicCounters":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxAtomicCounterBindings":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxVertexAtomicCounterBuffers":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxFragmentAtomicCounterBuffers":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxCombinedAtomicCounterBuffers":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            },
            "gl_MaxAtomicCounterBufferSize":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"Medium",
                    "qualifier":"Const"
                },
                "value":"resources"
            }
        },
        "subgroups":{
            "EXTGeometryShader":{
                "variables":{
                    "gl_MaxGeometryInputComponents":{
                        "level":"ESSL3_1_BUILTINS",
                        "type":{
                            "basic":"Int",
                            "precision":"Medium",
                            "qualifier":"Const"
                        },
                        "extension":"EXT_geometry_shader",
                        "value":"resources"
                    },
                    "gl_MaxGeometryOutputComponents":{
                        "level":"ESSL3_1_BUILTINS",
                        "type":{
                            "basic":"Int",
                            "precision":"Medium",
                            "qualifier":"Const"
                        },
                        "extension":"EXT_geometry_shader",
                        "value":"resources"
                    },
                    "gl_MaxGeometryImageUniforms":{
                        "level":"ESSL3_1_BUILTINS",
                        "type":{
                            "basic":"Int",
                            "precision":"Medium",
                            "qualifier":"Const"
                        },
                        "extension":"EXT_geometry_shader",
                        "value":"resources"
                    },
                    "gl_MaxGeometryTextureImageUnits":{
                        "level":"ESSL3_1_BUILTINS",
                        "type":{
                            "basic":"Int",
                            "precision":"Medium",
                            "qualifier":"Const"
                        },
                        "extension":"EXT_geometry_shader",
                        "value":"resources"
                    },
                    "gl_MaxGeometryOutputVertices":{
                        "level":"ESSL3_1_BUILTINS",
                        "type":{
                            "basic":"Int",
                            "precision":"Medium",
                            "qualifier":"Const"
                        },
                        "extension":"EXT_geometry_shader",
                        "value":"resources"
                    },
                    "gl_MaxGeometryTotalOutputComponents":{
                        "level":"ESSL3_1_BUILTINS",
                        "type":{
                            "basic":"Int",
                            "precision":"Medium",
                            "qualifier":"Const"
                        },
                        "extension":"EXT_geometry_shader",
                        "value":"resources"
                    },
                    "gl_MaxGeometryUniformComponents":{
                        "level":"ESSL3_1_BUILTINS",
                        "type":{
                            "basic":"Int",
                            "precision":"Medium",
                            "qualifier":"Const"
                        },
                        "extension":"EXT_geometry_shader",
                        "value":"resources"
                    },
                    "gl_MaxGeometryAtomicCounters":{
                        "level":"ESSL3_1_BUILTINS",
                        "type":{
                            "basic":"Int",
                            "precision":"Medium",
                            "qualifier":"Const"
                        },
                        "extension":"EXT_geometry_shader",
                        "value":"resources"
                    },
                    "gl_MaxGeometryAtomicCounterBuffers":{
                        "level":"ESSL3_1_BUILTINS",
                        "type":{
                            "basic":"Int",
                            "precision":"Medium",
                            "qualifier":"Const"
                        },
                        "extension":"EXT_geometry_shader",
                        "value":"resources"
                    }
                }
            }
        }
    },
    "FragShader":{
        "condition":"shaderType == GL_FRAGMENT_SHADER",
        "variables":{
            "gl_FragCoord":{
                "level":"COMMON_BUILTINS",
                "type":{
                    "basic":"Float",
                    "precision":"Medium",
                    "qualifier":"FragCoord",
                    "primarySize":4
                }
            },
            "gl_FrontFacing":{
                "level":"COMMON_BUILTINS",
                "type":{
                    "basic":"Bool",
                    "qualifier":"FrontFacing"
                }
            },
            "gl_PointCoord":{
                "level":"COMMON_BUILTINS",
                "type":{
                    "basic":"Float",
                    "precision":"Medium",
                    "qualifier":"PointCoord",
                    "primarySize":2
                }
            },
            "gl_FragColor":{
                "level":"ESSL1_BUILTINS",
                "type":{
                    "basic":"Float",
                    "precision":"Medium",
                    "qualifier":"FragColor",
                    "primarySize":4
                }
            },
            "gl_FragData":{
                "level":"ESSL1_BUILTINS",
                "initDynamicType":"TType *{type_name} = new TType(EbtFloat, EbpMedium, EvqFragData, 4); if (spec != SH_WEBGL2_SPEC && spec != SH_WEBGL3_SPEC) {{ {type_name}->makeArray(resources.MaxDrawBuffers); }} else {{ {type_name}->makeArray(1u); }}"
            },
            "gl_FragDepth":{
                "level":"ESSL3_BUILTINS",
                "type":{
                    "basic":"Float",
                    "precision":"High",
                    "qualifier":"FragDepth"
                }
            }
        },
        "subgroups":{
            "EXTBlendFuncExtended":{
                "condition":"mResources.EXT_blend_func_extended",
                "variables":{
                    "gl_SecondaryFragColorEXT":{
                        "level":"ESSL1_BUILTINS",
                        "extension":"EXT_blend_func_extended",
                        "type":{
                            "basic":"Float",
                            "precision":"Medium",
                            "qualifier":"SecondaryFragColorEXT",
                            "primarySize":4
                        }
                    },
                    "gl_SecondaryFragDataEXT":{
                        "level":"ESSL1_BUILTINS",
                        "extension":"EXT_blend_func_extended",
                        "initDynamicType":"TType *{type_name} = new TType(EbtFloat, EbpMedium, EvqSecondaryFragDataEXT, 4, 1); {type_name}->makeArray(resources.MaxDualSourceDrawBuffers);"
                    }
                }
            },
            "EXTFragDepth":{
                "condition":"mResources.EXT_frag_depth",
                "variables":{
                    "gl_FragDepthEXT":{
                        "level":"ESSL1_BUILTINS",
                        "extension":"EXT_frag_depth",
                        "initDynamicType":"TType *{type_name} = new TType(EbtFloat, resources.FragmentPrecisionHigh ? EbpHigh : EbpMedium, EvqFragDepthEXT, 1);"
                    }
                }
            },
            "EXTShaderFramebufferFetch":{
                "condition":"mResources.EXT_shader_framebuffer_fetch",
                "variables":{
                    "gl_LastFragData":{
                        "level":"ESSL1_BUILTINS",
                        "extension":"EXT_shader_framebuffer_fetch",
                        "initDynamicType":"TType *{type_name} = new TType(EbtFloat, EbpMedium, EvqLastFragData, 4, 1); {type_name}->makeArray(resources.MaxDrawBuffers);"
                    }
                }
            },
            "NVShaderFramebufferFetch":{
                "condition":"mResources.NV_shader_framebuffer_fetch",
                "variables":{
                    "gl_LastFragColor":{
                        "level":"ESSL1_BUILTINS",
                        "extension":"NV_shader_framebuffer_fetch",
                        "type":{
                            "basic":"Float",
                            "precision":"Medium",
                            "qualifier":"LastFragColor",
                            "primarySize":4
                        }
                    },
                    "gl_LastFragData":{
                        "level":"ESSL1_BUILTINS",
                        "suffix":"NV",
                        "extension":"NV_shader_framebuffer_fetch",
                        "initDynamicType":"TType *{type_name} = new TType(EbtFloat, EbpMedium, EvqLastFragData, 4, 1); {type_name}->makeArray(resources.MaxDrawBuffers);"
                    }
                }
            },
            "ARMShaderFramebufferFetch":{
                "condition":"!mResources.EXT_shader_framebuffer_fetch && !mResources.NV_shader_framebuffer_fetch && mResources.ARM_shader_framebuffer_fetch",
                "variables":{
                    "gl_LastFragColorARM":{
                        "level":"ESSL1_BUILTINS",
                        "extension":"ARM_shader_framebuffer_fetch",
                        "type":{
                            "basic":"Float",
                            "precision":"Medium",
                            "qualifier":"LastFragColor",
                            "primarySize":4
                        }
                    }
                }
            },
            "GeometryShaderSupported":{
                "condition":"mResources.EXT_geometry_shader",
                "variables":{
                    "gl_PrimitiveID":{
                        "level":"ESSL3_1_BUILTINS",
                        "extension":"EXT_geometry_shader",
                        "type":{
                            "basic":"Int",
                            "precision":"High",
                            "qualifier":"PrimitiveID"
                        }
                    },
                    "gl_Layer":{
                        "level":"ESSL3_1_BUILTINS",
                        "extension":"EXT_geometry_shader",
                        "type":{
                            "basic":"Int",
                            "precision":"High",
                            "qualifier":"Layer"
                        }
                    }
                }
            }
        }
    },
    "VertexShader":{
        "condition":"shaderType == GL_VERTEX_SHADER",
        "variables":{
            "gl_Position":{
                "level":"COMMON_BUILTINS",
                "type":{
                    "basic":"Float",
                    "precision":"High",
                    "qualifier":"Position",
                    "primarySize":4
                }
            },
            "gl_PointSize":{
                "level":"COMMON_BUILTINS",
                "type":{
                    "basic":"Float",
                    "precision":"Medium",
                    "qualifier":"PointSize"
                }
            },
            "gl_InstanceID":{
                "level":"ESSL3_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"High",
                    "qualifier":"InstanceID"
                }
            },
            "gl_VertexID":{
                "level":"ESSL3_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"High",
                    "qualifier":"VertexID"
                }
            },
            "gl_ViewportIndex":{
                "comment":"For internal use by ANGLE - not exposed to the parser.",
                "level":"GLSL_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"High",
                    "qualifier":"ViewportIndex"
                }
            },
            "gl_Layer":{
                "suffix":"VS",
                "comment":"gl_Layer exists in other shader stages in ESSL, but not in vertex shader so far.",
                "level":"GLSL_BUILTINS",
                "type":{
                    "basic":"Int",
                    "precision":"High",
                    "qualifier":"Layer"
                }
            }
        },
        "subgroups":{
            "ANGLEMultiDraw":{
                "condition": "mResources.ANGLE_multi_draw",
                "subgroups":{
                  "ESSL3":{
                        "variables":{
                            "gl_DrawID":{
                                "level":"ESSL3_BUILTINS",
                                "extension":"ANGLE_multi_draw",
                                "type":{
                                    "basic":"Int",
                                    "precision":"High",
                                    "qualifier":"DrawID"
                                }
                            }
                        }
                    },
                    "ESSL1":{
                        "variables":{
                            "gl_DrawID":{
                                "suffix":"ESSL1",
                                "level":"ESSL1_BUILTINS",
                                "extension":"ANGLE_multi_draw",
                                "type":{
                                    "basic":"Int",
                                    "precision":"High",
                                    "qualifier":"DrawID"
                                }
                            }
                        }
                    }
                }

            }
        }
    },
    "ComputeShader":{
        "condition":"shaderType == GL_COMPUTE_SHADER",
        "variables":{
            "gl_NumWorkGroups":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"UInt",
                    "precision":"Undefined",
                    "qualifier":"NumWorkGroups",
                    "primarySize":3
                }
            },
            "gl_WorkGroupSize":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"UInt",
                    "precision":"Undefined",
                    "qualifier":"WorkGroupSize",
                    "primarySize":3
                }
            },
            "gl_WorkGroupID":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"UInt",
                    "precision":"Undefined",
                    "qualifier":"WorkGroupID",
                    "primarySize":3
                }
            },
            "gl_LocalInvocationID":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"UInt",
                    "precision":"Undefined",
                    "qualifier":"LocalInvocationID",
                    "primarySize":3
                }
            },
            "gl_GlobalInvocationID":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"UInt",
                    "precision":"Undefined",
                    "qualifier":"GlobalInvocationID",
                    "primarySize":3
                }
            },
            "gl_LocalInvocationIndex":{
                "level":"ESSL3_1_BUILTINS",
                "type":{
                    "basic":"UInt",
                    "precision":"Undefined",
                    "qualifier":"LocalInvocationIndex"
                }
            }
        }
    },
    "GeometryShader":{
        "condition":"shaderType == GL_GEOMETRY_SHADER_EXT",
        "variables":{
            "gl_PrimitiveIDIn":{
                "level":"ESSL3_1_BUILTINS",
                "extension":"EXT_geometry_shader",
                "type":{
                    "basic":"Int",
                    "precision":"High",
                    "qualifier":"PrimitiveIDIn"
                }
            },
            "gl_InvocationID":{
                "level":"ESSL3_1_BUILTINS",
                "extension":"EXT_geometry_shader",
                "type":{
                    "basic":"Int",
                    "precision":"High",
                    "qualifier":"InvocationID"
                }
            },
            "gl_PrimitiveID":{
                "suffix":"GS",
                "level":"ESSL3_1_BUILTINS",
                "extension":"EXT_geometry_shader",
                "type":{
                    "basic":"Int",
                    "precision":"High",
                    "qualifier":"PrimitiveID"
                }
            },
            "gl_Layer":{
                "suffix":"GS",
                "level":"ESSL3_1_BUILTINS",
                "extension":"EXT_geometry_shader",
                "type":{
                    "basic":"Int",
                    "precision":"High",
                    "qualifier":"Layer"
                }
            },
            "gl_PerVertex":{
                "level":"ESSL3_1_BUILTINS",
                "extension":"EXT_geometry_shader",
                "class":"TInterfaceBlock",
                "fields":{
                    "gl_Position":{
                        "basic":"Float",
                        "precision":"High",
                        "qualifier":"Position",
                        "primarySize":4
                    }
                }
            },
            "gl_in":{
                "level":"ESSL3_1_BUILTINS",
                "extension":"EXT_geometry_shader",
                "initDynamicType":"TType *{type_name} = new TType(gl_PerVertex, EvqPerVertexIn, TLayoutQualifier::Create()); {type_name}->makeArray(0u);",
                "comment":"The array size of gl_in is undefined until we get a valid input primitive declaration."
            }
        },
        "subgroups":{
            "Out":{
                "variables":{
                    "gl_PerVertex":{
                        "suffix":"OutBlock",
                        "level":"ESSL3_1_BUILTINS",
                        "extension":"EXT_geometry_shader",
                        "private":true,
                        "class":"TInterfaceBlock",
                        "fields":{
                            "gl_Position":{
                                "basic":"Float",
                                "precision":"High",
                                "qualifier":"Position",
                                "primarySize":4
                            }
                        }
                    },
                    "gl_Position":{
                        "suffix":"GS",
                        "level":"ESSL3_1_BUILTINS",
                        "extension":"EXT_geometry_shader",
                        "initDynamicType":"TType *{type_name} = new TType(EbtFloat, EbpHigh, EvqPosition, 4); {type_name}->setInterfaceBlock(gl_PerVertexOutBlock);"
                    }
                }
            }
        }
    },
    "Multiview":{
        "condition":"mResources.OVR_multiview2 && shaderType != GL_COMPUTE_SHADER",
        "subgroups":{
            "ESSL3":{
                "variables":{
                    "gl_ViewID_OVR":{
                        "level":"ESSL3_BUILTINS",
                        "extension":"OVR_multiview2",
                        "type":{
                            "basic":"UInt",
                            "precision":"High",
                            "qualifier":"ViewIDOVR"
                        }
                    }
                }
            },
            "ESSL1":{
                "variables":{
                    "gl_ViewID_OVR":{
                        "suffix":"ESSL1",
                        "level":"ESSL1_BUILTINS",
                        "extension":"OVR_multiview2",
                        "type":{
                            "basic":"Int",
                            "precision":"High",
                            "qualifier":"ViewIDOVR"
                        }
                    }
                }
            }
        }
    }
}