GLSLANG Spec 4.0 - OpenGL

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9 Shading Language Grammar function_call_or_method function_call_or_method: function_call_generic postfix_expression DOT function_call_generic function_call_generic: function_call_header_with_parameters RIGHT_PAREN function_call_header_no_parameters RIGHT_PAREN function_call_header_no_parameters: function_call_header VOID function_call_header function_call_header_with_parameters: function_call_header assignment_expression function_call_header_with_parameters COMMA assignment_expression function_call_header: function_identifier LEFT_PAREN // Grammar Note: Constructors look like functions, but lexical analysis recognized most of them as // keywords. They are now recognized through “type_specifier”. function_identifier: type_specifier IDENTIFIER FIELD_SELECTION unary_expression: postfix_expression INC_OP unary_expression DEC_OP unary_expression unary_operator unary_expression // Grammar Note: No traditional style type casts. unary_operator: PLUS DASH 140
9 Shading Language Grammar BANG TILDE // Grammar Note: No '*' or '&' unary ops. Pointers are not supported. multiplicative_expression: unary_expression multiplicative_expression STAR unary_expression multiplicative_expression SLASH unary_expression multiplicative_expression PERCENT unary_expression additive_expression: multiplicative_expression additive_expression PLUS multiplicative_expression additive_expression DASH multiplicative_expression shift_expression: additive_expression shift_expression LEFT_OP additive_expression shift_expression RIGHT_OP additive_expression relational_expression: shift_expression relational_expression LEFT_ANGLE shift_expression relational_expression RIGHT_ANGLE shift_expression relational_expression LE_OP shift_expression relational_expression GE_OP shift_expression equality_expression: relational_expression equality_expression EQ_OP relational_expression equality_expression NE_OP relational_expression and_expression: equality_expression and_expression AMPERSAND equality_expression exclusive_or_expression: and_expression exclusive_or_expression CARET and_expression 141
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The OpenGL ® Shading Language Lang
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Table of Contents 1 Introduction...
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6.1.2 Subroutines..................
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1 Introduction 1.1 Acknowledgments
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1 Introduction 1.3 Overview This do
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2 Overview of OpenGL Shading Tessel
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3 Basics 3.3 Preprocessor There is
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3 Basics Preprocessor expressions w
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3 Basics By default, compilers of t
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3 Basics centroid flat smooth noper
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3 Basics nondigit: one of _ a b c d
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4 Variables and Types All variables
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4 Variables and Types Floating Poin
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4 Variables and Types 4.1.3 Integer
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4 Variables and Types 4.1.4 Floats
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4 Variables and Types 4.1.8 Structu
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4 Variables and Types and as an alt
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4 Variables and Types There are no
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4 Variables and Types 4.3 Storage Q
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4 Variables and Types 4.3.4 Inputs
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4 Variables and Types Fragment inpu
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4 Variables and Types The order of
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4 Variables and Types If no optiona
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4 Variables and Types When using Op
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4 Variables and Types Finally, poin
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4 Variables and Types By default, g
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4 Variables and Types layout-qualif
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4 Variables and Types None of these
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4 Variables and Types When multi-sa
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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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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 5.6 Mat
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5 Operators and Expressions where t
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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 f(vec4,
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6 Statements and Structure 6.1.2 Su
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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 the fragmen
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7 Built-in Variables The output var
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7 Built-in Variables The values in
Page 96 and 97: 7 Built-in Variables in float gl_Fo
Page 98 and 99: 7 Built-in Variables // // Depth ra
Page 100 and 101: 7 Built-in Variables // // compatib
Page 102 and 103: 8 Built-in Functions The OpenGL Sha
Page 104 and 105: 8 Built-in Functions Syntax genType
Page 106 and 107: 8 Built-in Functions 8.3 Common Fun
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Page 114 and 115: 8 Built-in Functions 8.5 Geometric
Page 116 and 117: 8 Built-in Functions 8.6 Matrix Fun
Page 118 and 119: 8 Built-in Functions 8.7 Vector Rel
Page 120 and 121: 8 Built-in Functions 8.8 Integer Fu
Page 122 and 123: 8 Built-in Functions 8.9 Texture Fu
Page 124 and 125: 8 Built-in Functions float ComputeA
Page 126 and 127: 8 Built-in Functions Syntax gvec4 t
Page 136 and 137: 8 Built-in Functions Syntax (deprec
Page 138 and 139: 8 Built-in Functions 6. Derivatives
Page 140 and 141: 8 Built-in Functions • The spatia
Page 142 and 143: 8 Built-in Functions Multiple outpu
Page 144 and 145: 9 Shading Language Grammar TBD: sub
Page 148 and 149: 9 Shading Language Grammar inclusiv
Page 150 and 151: 9 Shading Language Grammar paramete
Page 152 and 153: 9 Shading Language Grammar IN OUT C
Page 154 and 155: 9 Shading Language Grammar SAMPLER2
Page 156 and 157: 9 Shading Language Grammar compound
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GLSLANG Spec 4.0 - OpenGL

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