GLSL Spec

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8.12 Fragment Processing Functions......................................................................................152 8.12.1 Derivative Functions..............................................................................................152 8.12.2 Interpolation Functions...........................................................................................154 8.13 Noise Functions..............................................................................................................155 8.14 Geometry Shader Functions...........................................................................................156 8.15 Shader Invocation Control Functions.............................................................................158 8.16 Shader Memory Control Function..................................................................................158 9 Shading Language Grammar for Core Profile........................................................................159 6
1 Introduction This document specifies only version 4.20 of the OpenGL Shading Language. It requires __VERSION__ to substitute 420, and requires #version to accept only 420. If #version is declared with a smaller number, the language accepted is a previous version of the shading language, which will be supported depending on the version and type of context in the OpenGL API. See the OpenGL Graphics System <strong>Spec</strong>ification, Version 4.2, for details on what language versions are supported. Previous versions of the OpenGL Shading Language, as well as the OpenGL ES Shading Language, are not strict subsets of the version specified here, particularly with respect to precision, name-hiding rules, and treatment of interface variables. See the specification corresponding to a particular language version for details specific to that version of the language. All OpenGL Graphics System <strong>Spec</strong>ification references in this specification are to version 4.2. 1
Page 1 and 2: The OpenGL ® Shading Language Lang
Page 3 and 4: Table of Contents 1 Introduction...
Page 5: 5.4 Constructors...................
Page 9 and 10: 1 Introduction • Change from ASCI
Page 11 and 12: 1 Introduction 1.4 Error Handling C
Page 13 and 14: 2 Overview of OpenGL Shading writte
Page 15 and 16: 3 Basics string being string 0. Lin
Page 17 and 18: 3 Basics The defined operator can b
Page 19 and 20: 3 Basics By default, compilers of t
Page 21 and 22: 3 Basics 3.5 Tokens The language is
Page 23 and 24: 3 Basics goto inline noinline publi
Page 25 and 26: 4 Variables and Types All variables
Page 27 and 28: 4 Variables and Types Floating Poin
Page 29 and 30: 4 Variables and Types Type usampler
Page 31 and 32: 4 Variables and Types 4.1.4 Floats
Page 33 and 34: 4 Variables and Types 4.1.7.1 Sampl
Page 35 and 36: 4 Variables and Types expression th
Page 37 and 38: 4 Variables and Types 4.1.10 Implic
Page 39 and 40: 4 Variables and Types A list of ini
Page 41 and 42: 4 Variables and Types Within a decl
Page 43 and 44: 4 Variables and Types Local variabl
Page 45 and 46: 4 Variables and Types location. Ver
Page 47 and 48: 4 Variables and Types uniform varia
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Page 51 and 52: 4 Variables and Types If an instanc
Page 53 and 54: 4 Variables and Types layout-qualif
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4 Variables and Types // code seque
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4 Variables and Types If the declar
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4 Variables and Types In this examp
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4 Variables and Types Redeclaration
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4 Variables and Types binding point
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4 Variables and Types Binding point
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4 Variables and Types Any image var
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4 Variables and Types 4.6 Parameter
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4 Variables and Types For example:
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4 Variables and Types • The textu
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4 Variables and Types Some examples
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4 Variables and Types because the c
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5 Operators and Expressions 5.2 Arr
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5 Operators and Expressions Some us
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5 Operators and Expressions The arg
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5 Operators and Expressions subscri
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5 Operators and Expressions • rig
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5 Operators and Expressions • The
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5 Operators and Expressions And mat
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6 Statements and Structure iteratio
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6 Statements and Structure 2. A mat
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6 Statements and Structure The cons
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6 Statements and Structure 6.3 Iter
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7 Built-in Variables 7.1 Built-In L
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7 Built-in Variables in int gl_Patc
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7 Built-in Variables Outputs”) an
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7 Built-in Variables The variable g
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7 Built-in Variables The following
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7 Built-in Variables face is visibl
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7 Built-in Variables const int gl_M
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7 Built-in Variables uniform mat4 g
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7 Built-in Variables // // compatib
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8 Built-in Functions 8.1 Angle and
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8 Built-in Functions 8.2 Exponentia
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8 Built-in Functions Syntax genType
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123 8 Built-in Functions
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8 Built-in Functions Syntax double
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8 Built-in Functions Syntax mat2 in
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8 Built-in Functions Syntax bool al
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8 Built-in Functions Syntax genITyp
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8 Built-in Functions In all functio
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8 Built-in Functions Syntax vec2 te
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8 Built-in Functions Syntax gvec4 t
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8 Built-in Functions 8.9.4 Compatib
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8 Built-in Functions 8.10 Atomic-Co
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8 Built-in Functions Syntax gvec4 i
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8 Built-in Functions With single-sa
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8 Built-in Functions 8.13 Noise Fun
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8 Built-in Functions Multiple outpu
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9 Shading Language Grammar for Core
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GLSL Spec

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