# Glossary

## By theme

* TYPES

[void](index.html#void.md)
[bool](index.html#bool.md)
[int](index.html#int.md)
[float](index.html#float.md)
[bvec2](index.html#bvec2.md)
[bvec3](index.html#bvec3.md)
[bvec4](index.html#bvec4.md)
[ivec2](index.html#ivec2.md)
[ivec3](index.html#ivec3.md)
[ivec4](index.html#ivec4.md)
[vec2](index.html#vec2.md)
[vec3](index.html#vec3.md)
[vec4](index.html#vec4.md)
[mat2](index.html#mat2.md)
[mat3](index.html#mat3.md)
[mat4](index.html#mat4.md)
[sampler2D](index.html#sampler2D.md)
[samplerCube](index.html#samplerCube.md)
[struct](index.html#struct.md)

* QUALIFIERS

[attribute](index.html#attribute.md)
[const](index.html#const.md)
[uniform](index.html#uniform.md)
[varying](index.html#varying.md)
[precision](index.html#precision.md)
[highp](index.html#highp.md)
[mediump](index.html#mediump.md)
[lowp](index.html#lowp.md)
[in](index.html#in.md)
[out](index.html#out.md)
[inout](index.html#inout.md)

* BUILT-IN VARIABLES

[gl_Position](index.html#gl_Position.md)
[gl_PointSize](index.html#gl_PointSize.md)
[gl_PointCoord](index.hmtl#gl_PointCoord.md)
[gl_FrontFacing](index.html#gl_FrontFacing.md)
[gl_FragCoord](index.html#gl_FragCoord.md)
[gl_FragColor](index.html#gl_FragColor.md)

* BUILT-IN CONSTANTS

[gl_MaxVertexAttribs](index.html#gl_MaxVertexAttribs.md)
[gl_MaxVaryingVectors](index.html#gl_MaxVaryingVectors.md)
[gl_MaxVertexTextureImageUnits](index.html#gl_MaxVertexTextureImageUnits.md)
[gl_MaxCombinedTextureImageUnits](index.html#gl_MaxCombinedTextureImageUnits.md)
[gl_MaxTextureImageUnits](index.html#gl_MaxTextureImageUnits.md)
[gl_MaxFragmentUniformVectors](index.html#gl_MaxFragmentUniformVectors.md)
[gl_MaxDrawBuffers](index.html#gl_MaxDrawBuffers.md)

* ANGLE & TRIGONOMETRY FUNCTIONS

[radians()](index.html#radians.md)
[degrees()](index.html#degrees.md)
[sin()](index.html#sin.md)
[cos()](index.html#cos.md)
[tan()](index.html#tan.md)
[asin()](index.html#asin.md)
[acos()](index.html#acos.md)
[atan()](index.html#atan.md)

* EXPONENTIAL FUNCTIONS

[pow()](index.html#pow.md)
[exp()](index.html#exp.md)
[log()](index.html#log.md)
[exp2()](index.html#exp2.md)
[log2()](index.html#log2.md)
[sqrt()](index.html#sqrt.md)
[inversesqrt()](index.html#inversesqrt.md)

* COMMON FUNCTIONS

[abs()](index.html#abs.md)
[sign()](index.html#sign.md)
[floor()](index.html#floor.md)
[ceil()](index.html#ceil.md)
[fract()](index.html#fract.md)
[mod()](index.html#mod.md)
[min()](index.html#min.md)
[max()](index.html#max.md)
[clamp()](index.html#clamp.md)
[mix()](index.html#mix.md)
[step()](index.html#step.md)
[smoothstep()](index.html#smoothstep.md)

* GEOMETRIC FUNCTIONS

[length()](index.html#length.md)
[distance()](index.html#distance.md)
[dot()](index.html#dot.md)
[cross()](index.html#cross.md)
[normalize()](index.html#normalize.md)
[facefoward()](index.html#facefoward.md)
[reflect()](index.html#reflect.md)
[refract()](index.html#refract.md)

* MATRIX FUNCTIONS

[matrixCompMult()](index.html#matrixCompMult.md)

* VECTOR RELATIONAL FUNCTIONS

[lessThan()](index.html#lessThan.md)
[lessThanEqual()](index.html#lessThanEqual.md)
[greaterThan()](index.html#greaterThan.md)
[greaterThanEqual()](index.html#greaterThanEqual.md)
[equal()](index.html#equal.md)
[notEqual()](index.html#notEqual.md)
[any()](index.html#any.md)
[all()](index.html#all.md)
[not()](index.html#not.md)

* TEXTURE LOOKUP FUNCTIONS

[texture2D()](index.html#texture2D.md)
[textureCube()](index.html#textureCube.md)

## Alphabetical

* A

[abs()](index.html#abs.md)
[acos()](index.html#acos.md)
[all()](index.html#all.md)
[any()](index.html#any.md)
[asin()](index.html#asin.md)
[atan()](index.html#atan.md)
[attribute](index.html#attribute.md)

* B

[bool](index.html#bool.md)
[bvec2](index.html#bvec2.md)
[bvec3](index.html#bvec3.md)
[bvec4](index.html#bvec4.md)

* C

[ceil()](index.html#ceil.md)
[clamp()](index.html#clamp.md)
[const](index.html#const.md)
[cos()](index.html#cos.md)
[cross()](index.html#cross.md)

* D

[degrees()](index.html#degrees.md)
[dFdx()](index.html#dFdx.md)
[dFdy()](index.html#dFdy.md)
[distance()](index.html#distance.md)
[dot()](index.html#dot.md)

* E 

[equal()](index.html#equal.md)
[exp()](index.html#exp.md)
[exp2()](index.html#exp2.md)

* F 

[faceforward()](index.html#faceforward.md)
[float](index.html#float.md)
[floor()](index.html#floor.md)
[fract()](index.html#fract.md)

* G

[greaterThan()](index.html#greaterThan.md)
[greaterThanEqual()](index.html#greaterThanEqual.md)
[gl_FragColor](index.html#gl_FragColor.md)
[gl_FragCoord](index.html#gl_FragCoord.md)
[gl_FrontFacing](index.html#gl_FrontFacing.md)
[gl_PointCoord](index.hmtl#gl_PointCoord.md)
[gl_PointSize](index.html#gl_PointSize.md)
[gl_Position](index.html#gl_Position.md)
[gl_MaxCombinedTextureImageUnits](index.html#gl_MaxCombinedTextureImageUnits.md)
[gl_MaxDrawBuffers](index.html#gl_MaxDrawBuffers.md)
[gl_MaxFragmentUniformVectors](index.html#gl_MaxFragmentUniformVectors.md)
[gl_MaxVaryingVectors](index.html#gl_MaxVaryingVectors.md)
[gl_MaxVertexAttribs](index.html#gl_MaxVertexAttribs.md)
[gl_MaxVertexTextureImageUnits](index.html#gl_MaxVertexTextureImageUnits.md)
[gl_MaxTextureImageUnits](index.html#gl_MaxTextureImageUnits.md)

* H

[highp](index.html#highp.md)

* I

[in](index.html#in.md)
[inout](index.html#inout.md)
[int](index.html#int.md)
[inversesqrt()](index.html#inversesqrt.md)
[ivec2](index.html#ivec2.md)
[ivec3](index.html#ivec3.md)
[ivec4](index.html#ivec4.md)

* L

[length()](index.html#length.md)
[lessThan()](index.html#lessThan.md)
[lessThanEqual()](index.html#lessThanEqual.md)
[log()](index.html#log.md)
[log2()](index.html#log2.md)
[lowp](index.html#lowp.md)

* M 

[matrixCompMult()](index.html#matrixCompMult.md)
[mat2](index.html#mat2.md)
[mat3](index.html#mat3.md)
[mat4](index.html#mat4.md)
[max()](index.html#max.md)
[mediump](index.html#mediump.md)
[min()](index.html#min.md)
[mix()](index.html#mix.md)
[mod()](index.html#mod.md)

* N

[normalize()](index.html#normalize.md)
[not()](index.html#not.md)
[notEqual()](index.html#notEqual.md)

* O

[out](index.html#out.md)

* P

[precision](index.html#precision.md)
[pow()](index.html#pow.md)

* R

[radians()](index.html#radians.md)
[reflect()](index.html#reflect.md)
[refract()](index.html#refract.md)

* S

[sampler2D](index.html#sampler2D.md)
[samplerCube](index.html#samplerCube.md)
[sign()](index.html#sign.md)
[sin()](index.html#sin.md)
[smoothstep()](index.html#smoothstep.md)
[sqrt()](index.html#sqrt.md)
[step()](index.html#step.md)
[struct](index.html#struct.md)

* T

[tan()](index.html#tan.md)
[texture2D()](index.html#texture2D.md)
[textureCube()](index.html#textureCube.md)

* U

[uniform](index.html#uniform.md)

* V

[varying](index.html#varying.md)
[vec2](index.html#vec2.md)
[vec3](index.html#vec3.md)
[vec4](index.html#vec4.md)
[void](index.html#void.md)