local static = require'completion.source.static'

local words = {
  'gl_FragCoord',
  'gl_FrontFacing',
  'gl_ClipDistance',
  'gl_CullDistance',
  'gl_PointCoord',
  'gl_PrimitiveID',
  'gl_SampleID',
  'gl_SamplePosition',
  'gl_SampleMaskIn',
  'gl_Layer',
  'gl_ViewportIndex',
  'gl_HelperInvocation',
  'gl_FragDepth',
  'gl_SampleMask',

  -- Compatibility profile vertex shader built-in inputs
  'gl_Color',
  'gl_SecondaryColor',
  'gl_Normal',
  'gl_Vertex',
  'gl_MultiTexCoord0',
  'gl_MultiTexCoord1',
  'gl_MultiTexCoord2',
  'gl_MultiTexCoord3',
  'gl_MultiTexCoord4',
  'gl_MultiTexCoord5',
  'gl_MultiTexCoord6',
  'gl_MultiTexCoord7',
  'gl_FogCoord',

  -- Trigonometry Functions
  'radians',
  'degrees',
  'sin',
  'cos',
  'tan',
  'asin',
  'acos',
  'atan',
  'sinh',
  'cosh',
  'tanh',
  'asinh',
  'acosh',
  'atanh',

  -- Exponential functions
  'pow',
  'exp',
  'log',
  'exp2',
  'log2',
  'sqrt',
  'inversesqrt',

  -- Common functions
  'abs',
  'sign',
  'floor',
  'trunc',
  'round',
  'roundEven',
  'ceil',
  'fract',
  'mod',
  'modf',
  'min',
  'max',
  'clamp',
  'mix',
  'step',
  'smoothstep',
  'isnan',
  'isinf',
  'floatBitsToInt',
  'floatBitsToUint',
  'intBitsToFloat',
  'uintBitsToFloat',
  'fma',
  'frexp',
  'ldexp',

  -- Floating point pack and unpack functions
  'packUnorm2x16',
  'packSnorm2x16',
  'packUnorm4x8',
  'packSnorm4x8',
  'unpackUnorm2x16',
  'unpackSnorm2x16',
  'unpackUnorm4x8',
  'unpackSnorm4x8',
  'packHalf2x16',
  'unpackHalf2x16',
  'packDouble2x32',
  'unpackDouble2x32',

  -- Geometric functions
  'length',
  'distance',
  'dot',
  'cross',
  'normalize',
  'ftransform',
  'faceforward',
  'reflect',
  'refract',

  -- Matrix functions
  'matrixCompMult',
  'outerProduct',
  'transpose',
  'determinant',
  'inverse',

  -- Vector relational functions
  'lessThan',
  'lessThanEqual',
  'greaterThan',
  'greaterThanEqual',
  'equal',
  'notEqual',
  'any',
  'all',
  'not',

  -- Integer functions
  'uaddCarry',
  'usubBorrow',
  'umulExtended',
  'imulExtended',
  'bitfieldExtract',
  'bitfieldInsert',
  'bitfieldReverse',
  'bitCount',
  'findLSB',
  'findMSB',

  -- Texture functions
  'textureSize',
  'textureQueryLod',
  'textureQueryLevels',
  'textureSamples',

  -- Texel lookup functions
  'texture',
  'textureProj',
  'textureLod',
  'textureOffsettextelFetch',
  'texelFetchOffset',
  'textureProjOffset',
  'textureLodOffset',
  'textureProjLod',
  'textureProjLodOffset',
  'textureGrad',
  'textureGradOffset',
  'textureProjGrad',
  'textureProjGradOffset',

  -- Noise functions
  'noise1',
  'noise2',
  'noise3',
  'noise4',
}

return {get_completion_items = static.get_static_source(words)}