-- authors: Luxinia Dev (Eike Decker & Christoph Kubisch)
---------------------------------------------------------

return {
  exts = {"glsl","vert","frag","geom","cont","eval", "glslv", "glslf"},
  lexer = wxstc.wxSTC_LEX_CPP,
  apitype = "glsl",
  sep = "%.",
  linecomment = "//",

  isfndef = function(str)
    local l
    local s,e,cap = string.find(str,"^%s*([A-Za-z0-9_]+%s+[A-Za-z0-9_]+%s*%(.+%))")
    if (not s) then
      s,e,cap = string.find(str,"^%s*([A-Za-z0-9_]+%s+[A-Za-z0-9_]+)%s*%(")
    end
    if (cap and (string.find(cap,"^return") or string.find(cap,"else"))) then return end
    return s,e,cap,l
  end,

  lexerstyleconvert = {
    text = {wxstc.wxSTC_C_IDENTIFIER,
      wxstc.wxSTC_C_VERBATIM,
      wxstc.wxSTC_C_REGEX,
      wxstc.wxSTC_C_REGEX,
      wxstc.wxSTC_C_GLOBALCLASS,},

    lexerdef = {wxstc.wxSTC_C_DEFAULT,},
    comment = {wxstc.wxSTC_C_COMMENT,
      wxstc.wxSTC_C_COMMENTLINE,
      wxstc.wxSTC_C_COMMENTDOC,
      wxstc.wxSTC_C_COMMENTLINEDOC,
      wxstc.wxSTC_C_COMMENTDOCKEYWORD,
      wxstc.wxSTC_C_COMMENTDOCKEYWORDERROR,},
    stringtxt = {wxstc.wxSTC_C_STRING,
      wxstc.wxSTC_C_CHARACTER,
      wxstc.wxSTC_C_UUID,},
    stringeol = {wxstc.wxSTC_C_STRINGEOL,},
    preprocessor= {wxstc.wxSTC_C_PREPROCESSOR,},
    operator = {wxstc.wxSTC_C_OPERATOR,},
    number = {wxstc.wxSTC_C_NUMBER,
      wxstc.wxSTC_C_WORD},

    keywords0 = {wxstc.wxSTC_C_WORD,},
    keywords1 = {wxstc.wxSTC_C_WORD2,},
  },

  keywords = {
    [[int uint half float bool double
    vec2 vec3 vec4 dvec2 dvec3 dvec4
    ivec2 ivec3 ivec4 uvec2 uvec3 uvec4 bvec2 bvec3 bvec4
    mat2 mat3 mat4 mat2x2 mat3x3 mat4x4 mat2x3 mat3x2 mat4x2 mat2x4 mat4x3 mat3x4
    dmat2 dmat3 dmat4 dmat2x2 dmat3x3 dmat4x4 dmat2x3 dmat3x2 dmat4x2 dmat2x4 dmat4x3 dmat3x4
    struct typedef void
    usampler1D usampler2D usampler3D usampler2DRect usamplerCube isampler1DArray usampler2DARRAY usamplerCubeArray usampler2DMS usampler2DMSArray
    isampler1D isampler2D isampler3D isampler2DRect isamplerCube isampler1DArray isampler2DARRAY isamplerCubeArray isampler2DMS isampler2DMSArray
    sampler1D sampler2D sampler3D sampler2DRect samplerCube sampler1DArray sampler2DArray samplerCubeArray sampler2DMS sampler2DMSArray
    sampler1DShadow sampler2DShadow sampler2DRectShadow sampler1DArrayShadow sampler2DArrayShadow samplerCubeArrayShadow
    usamplerBuffer isamplerBuffer samplerBuffer samplerRenderbuffer isamplerRenderbuffer usamplerRenderbuffer
    in out inout uniform const centroid sample attribute varying patch index true false
    return switch case for do while if else break continue main inline
    layout location vertices line_strip triangle_strip max_vertices stream
    triangles quads equal_spacing isolines fractional_even_spacing lines points
    fractional_odd_spacing cw ccw point_mode lines_adjacency triangles_adjacency
    invocations
    origin_upper_left pixel_center_integer
    smooth flat noperspective highp mediump lowp shared packed std140 row_major column_major
    gl_FrontColor gl_BackColor gl_FrontSecondaryColor gl_BackSecondaryColor gl_Color gl_SecondaryColor
    subroutine gl_Position gl_FragCoord
    gl_VertexID gl_InstanceID gl_Normal gl_Vertex gl_MultiTexCoord0 gl_MultiTexCoord1
    gl_MultiTexCoord2 gl_MultiTexCoord3 gl_MultiTexCoord4 gl_MultiTexCoord5 gl_MultiTexCoord6
    gl_MultiTexCoord7 gl_FogCoord gl_PointSize gl_ClipDistance
    gl_TexCoord gl_FogFragCoord gl_ClipVertex gl_in
    gl_PatchVerticesIn
    gl_PrimitiveID gl_InvocationID gl_TessLevelOuter gl_TessLevelInner gl_TessCoord
    gl_InvocationID gl_PrimitiveIDIn gl_Layer gl_ViewportIndex gl_FrontFacing
    gl_PointCoord gl_SampleID gl_SamplePosition gl_FragColor
    gl_FragData gl_FragDepth gl_SampleMask

    coherent volatile restrict
    image1D image2D image3D image2DRect imageCube imageBuffer image1DArray image2DArray imageCubeArray image2DMS image2DMSArray
    uimage1D uimage2D uimage3D uimage2DRect uimageCube uimageBuffer uimage1DArray uimage2DArray uimageCubeArray uimage2DMS uimage2DMSArray
    iimage1D iimage2D iimage3D iimage2DRect iimageCube iimageBuffer iimage1DArray iimage2DArray iimageCubeArray iimage2DMS iimage2DMSArray
    size1x8 size1x16 size1x32 size2x32 size4x32
    ]],

    [[discard
    radians degrees sin cos tan asin acos atan sinh cosh tanh asinh acosh atanh
    pow exp log exp2 log2 sqrt inversesqrt abs sign floor trunc round
    roundEven ceil fract mod modf min max mix step isnan isinf clamp smoothstep
    floatBitsToInt intBitsToFloat uintBitsToFloat fma frexp ldexp
    packUnorm2x16 packUnorm4x8 packSnorm4x8
    unpackUnorm2x16 unpackUnorm4x8 unpackSnorm4x8
    packDouble2x32 unpackDouble2x32
    length distance dot cross normalize ftransform faceforward
    reflect refract
    matrixCompMult outerProduct transpose determinant inverse
    lessThan lessThanEqual greaterThan greaterThanEqual equal
    notEqual any all not
    uaddCarry usubBorrow umulExtended imulExtended
    bitfeldExtract bitfieldInsert bitfeldReverse bitCount
    findLSB findMSB
    dFdx dFdy fwidth
    interpolateAtCentroid interpolateAtSample interpolateAtOffset
    noise1 noise2 noise3 noise4
    EmitStreamVertex EndStreamPrimitive EmitVertex EndPrimitive
    barrier
    textureSize textureQueryLod texture textureOffset textureProj
    textureLod textureProjOffset textureLodOffset
    texelFetchOffset texelFetch textureProjLod textureProjLodOffset
    textureGrad textureGradOffset textureProjGrad textureProjGradOffset
    textureGather textureGatherOffset
    texture2D texture1D texture3D textureCube texture2DRect
    texture1DProj texture1DLod texture1DProjLod
    texture2DProj texture2DLod texture2DProjLod
    texture3DProj texture3DLod texture3DProjLod
    textureCubeLod
    shadow1D shadow2D
    shadow1DProj shadow1DLod shadow1DProjLod
    shadow2DProj shadow2DLod shadow2DProjLod
    texelFetch1D texelFetch2D texelFetch3D texelFetch2DRect texelFetch1DArray texelFetch2DArray texelFetchBuffer
    textureSizeBuffer textureSize1D textureSize2D textureSize3D textureSizeCube textureSize2DRect
    textureSize1DArray textureSize2DArray
    texture1DArray texture1DArrayLod
    texture2DArray texture2DArrayLod
    shadow1DArray shadow1DArrayLod shadow2DArray shadowCube
    texture1DGrad texture1DProjGrad texture1DProjGrad texture1DArrayGrad
    texture2DGrad texture2DProjGrad texture2DProjGrad texture2DArrayGrad
    texture3DGrad texture3DProjGrad textureCubeGrad
    shadow1DGrad shadow1DProjGrad shadow1DArrayGrad shadow2DGrad shadow2DProjGrad shadow2DArrayGrad
    texture2DRectGrad texture2DRectProjGrad texture2DRectProjGrad shadow2DRectGrad shadow2DRectProjGrad
    shadowCubeGrad
    texture1DOffset texture1DProjOffset texture1DLodOffset texture1DProjLodOffset
    texture2DOffset texture2DProjOffset texture2DLodOffset texture2DProjLodOffset
    texture3DOffset texture3DProjOffset texture3DLodOffset texture3DProjLodOffset

    imageLoad imageStore
    imageAtomicAdd imageAtomicMin imageAtomicMax
    imageAtomicIncWrap imageAtomicDecWrap imageAtomicAnd
    imageAtomicOr imageAtomixXor imageAtomicExchange
    imageCompSwap memoryBarrier

    x y z w
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    xyyx xyyy xyyz xyyw xyzx xyzy xyzz xyzw xywx xywy
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    xzzx xzzy xzzz xzzw xzwx xzwy xzwz xzww xwxx xwxy
    xwxz xwxw xwyx xwyy xwyz xwyw xwzx xwzy xwzz xwzw
    xwwx xwwy xwwz xwww yxxx yxxy yxxz yxxw yxyx yxyy
    yxyz yxyw yxzx yxzy yxzz yxzw yxwx yxwy yxwz yxww
    yyxx yyxy yyxz yyxw yyyx yyyy yyyz yyyw yyzx yyzy
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    ywzx ywzy ywzz ywzw ywwx ywwy ywwz ywww zxxx zxxy
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    zxwx zxwy zxwz zxww zyxx zyxy zyxz zyxw zyyx zyyy
    zyyz zyyw zyzx zyzy zyzz zyzw zywx zywy zywz zyww
    zzxx zzxy zzxz zzxw zzyx zzyy zzyz zzyw zzzx zzzy
    zzzz zzzw zzwx zzwy zzwz zzww zwxx zwxy zwxz zwxw
    zwyx zwyy zwyz zwyw zwzx zwzy zwzz zwzw zwwx zwwy
    zwwz zwww wxxx wxxy wxxz wxxw wxyx wxyy wxyz wxyw
    wxzx wxzy wxzz wxzw wxwx wxwy wxwz wxww wyxx wyxy
    wyxz wyxw wyyx wyyy wyyz wyyw wyzx wyzy wyzz wyzw
    wywx wywy wywz wyww wzxx wzxy wzxz wzxw wzyx wzyy
    wzyz wzyw wzzx wzzy wzzz wzzw wzwx wzwy wzwz wzww
    wwxx wwxy wwxz wwxw wwyx wwyy wwyz wwyw wwzx wwzy
    wwzz wwzw wwwx wwwy wwwz wwww xy xz yz xyz
    xw yw xyw zw xzw yzw xyzw ]],

  },
}
