Metal Shading Language Specification
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- 5 Metal Standard Library 107 ...........................................................................
- Page of 4 174
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4.3.4.1 Vertex Function Input Attributes 67 ................................................................................ 4.3.4.2 Post-Tessellation Vertex Function Input Attributes 68 .................................................... 4.3.4.3 Vertex Function Output Attributes 69 ............................................................................. 4.3.4.4 Fragment Function Input Attributes 71 ............................................................................ 4.3.4.5 Fragment Function Output Attributes 73 ........................................................................ 4.3.4.6 Kernel Function Input Attributes 74 ................................................................................. 4.3.5 stage_in Attribute 78 ...................................................................................................... 4.3.5.1 Vertex Function Example that Uses the stage_in Attribute 78 ........................................ 4.3.5.2 Fragment Function Example that Uses the stage_in Attribute 79 ................................... 4.3.5.3 Kernel Function Example that Uses the stage_in Attribute 81 ........................................ 4.4 Storage Class Specifiers 81 .................................................................................................. 4.5 Sampling and Interpolation Attributes 82 ............................................................................. 4.6 Per-Fragment Function vs. Per-Sample Function 83 ............................................................ 4.7 Imageblock Attributes 84 ...................................................................................................... 4.7.1 user Attribute for Matching Data Members of Master and View Imageblocks 84 .......... 4.7.2 Imageblocks and Raster Order Groups 88 ...................................................................... 4.7.3 Aliasing Explicit and Implicit Imageblocks 90 ................................................................. 4.7.4 Imageblocks and Function Constants 91 ........................................................................ 4.8 Programmable Blending 91 ................................................................................................... 4.9 Graphics Function – Signature Matching 91 ......................................................................... 4.9.1 Vertex – Fragment Signature Matching 92 ..................................................................... 4.10 Program Scope Function Constants 97 ................................................................................ 4.10.1 Specifying Program Scope Function Constants 98 ........................................................ 4.10.1.1 Function Constants to Control Code Paths to Compile 99 ............................................. 4.10.1.2 Function Constants when Declaring the Arguments of Functions 100 .......................... 4.10.1.3 Function Constants for Elements of a [[stage_in]] Struct 102 ........................................ 4.10.1.4 Function Constants for Resource Bindings 104 .............................................................. 4.10.1.5 Function Constants for Color Attachments and Raster Order Groups 104 ..................... 4.10.1.6 Function Constants with Elements of a Struct 105 ......................................................... 4.11 Per-Primitive Viewport and Scissor Rectangle Index Selection 105 ..................................... 4.12 Additional Restrictions 106 ................................................................................................... 5 Metal Standard Library 107 ........................................................................... 5.1 Namespace and Header Files 107 ......................................................................................... 2017-9-12 | Copyright © 2017 Apple Inc. All Rights Reserved. Page of 4 174 5.2 Common Functions 107 ........................................................................................................ 5.3 Integer Functions 108 ........................................................................................................... 5.4 Relational Functions 110 ....................................................................................................... 5.5 Math Functions 111 ................................................................................................................ 5.6 Matrix Functions 115 ............................................................................................................. 5.7 Geometric Functions 116 ...................................................................................................... 5.8 Compute Functions 117 ......................................................................................................... 5.8.1 Threadgroup and SIMD-group Synchronization Functions 117 ...................................... 5.9 Graphics Functions 119 ......................................................................................................... 5.9.1 Fragment Functions 119 .................................................................................................. 5.9.1.1 Fragment Functions – Derivatives 119 ........................................................................... 5.9.1.2 Fragment Functions – Samples 119 ................................................................................ 5.9.1.3 Fragment Functions – Flow Control 120 .......................................................................... 5.10 Texture Functions 120 ........................................................................................................... 5.10.1 1D Texture 121 ................................................................................................................. 5.10.22 1D Texture Array 122 ....................................................................................................... 5.10.3 2D Texture 122 ...................................................................................................................... 5.10.3.1 2D Texture Sampling Example 123 .................................................................................. 5.10.4 2D Texture Array 124 ............................................................................................................. 5.10.5 3D Texture 125 ...................................................................................................................... 5.10.6 Cube Texture 125 .................................................................................................................. 5.10.7 Cube Array Texture 127 ................................................................................................... 5.10.8 2D Multisampled Texture 128 ............................................................................................... 5.10.9 2D Depth Texture 128 ........................................................................................................... 5.10.10 2D Depth Texture Array 129 .................................................................................................. 5.10.11 Cube Depth Texture 130 ....................................................................................................... 5.10.12 Cube Array Depth Texture 131 .............................................................................................. 5.10.13 2D Multisampled Depth Texture 133 ..................................................................................... 5.10.14 Texture Fence Functions 133 ................................................................................................ 5.10.15 Null Texture Functions 134 .................................................................................................... 5.11 Pack and Unpack Functions 134 ........................................................................................... 5.11.1 Unpack Integer(s); Convert to a Floating-Point Vector 134 ............................................ 5.11.2 Convert Floating-Point Vector to Integers, then Pack the Integers 135 .......................... 2017-9-12 | Copyright © 2017 Apple Inc. 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