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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="API documentation for the Rust `pipeline_layout` mod in crate `vulkano`."><meta name="keywords" content="rust, rustlang, rust-lang, pipeline_layout"><title>vulkano::descriptor::pipeline_layout - Rust</title><link rel="stylesheet" type="text/css" href="../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../dark.css"><link rel="stylesheet" type="text/css" href="../../../light.css" id="themeStyle"><script src="../../../storage.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="shortcut icon" href="../../../favicon.ico"><style type="text/css">#crate-search{background-image:url("../../../down-arrow.svg");}</style></head><body class="rustdoc mod"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../../../vulkano/index.html'><div class='logo-container'><img src='https://raw.githubusercontent.com/vulkano-rs/vulkano/master/logo.png' alt='logo'></div></a><p class='location'>Module pipeline_layout</p><div class="sidebar-elems"><div class="block items"><ul><li><a href="#structs">Structs</a></li><li><a href="#enums">Enums</a></li><li><a href="#traits">Traits</a></li></ul></div><p class='location'><a href='../../index.html'>vulkano</a>::<wbr><a href='../index.html'>descriptor</a></p><script>window.sidebarCurrent = {name: 'pipeline_layout', ty: 'mod', relpath: '../'};</script><script defer src="../sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><a id="settings-menu" href="../../../settings.html"><img src="../../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class='fqn'><span class='out-of-band'><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>−</span>]</a></span><a class='srclink' href='../../../src/vulkano/descriptor/pipeline_layout/mod.rs.html#10-76' title='goto source code'>[src]</a></span><span class='in-band'>Module <a href='../../index.html'>vulkano</a>::<wbr><a href='../index.html'>descriptor</a>::<wbr><a class="mod" href=''>pipeline_layout</a></span></h1><div class='docblock'><p>A pipeline layout describes the layout of descriptors and push constants used by a graphics
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pipeline or a compute pipeline.</p>
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<p>The layout itself only <em>describes</em> the descriptors and push constants, and does not contain
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the content of the push constants or the actual list of resources that are going to be
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available through the descriptors. Push constants are set when you submit a draw command, and
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the list of resources is set by creating <em>descriptor set</em> objects and passing these sets when
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you submit a draw command.</p>
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<h1 id="pipeline-layout-objects" class="section-header"><a href="#pipeline-layout-objects">Pipeline layout objects</a></h1>
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<p>A pipeline layout is something that you must describe to the Vulkan implementation by creating
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a <strong>pipeline layout object</strong>, represented by the <code>PipelineLayout</code> struct in vulkano.</p>
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<p>Each graphics pipeline or compute pipeline that you create therefore holds a
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<strong>pipeline layout object</strong> By default, creating a pipeline automatically builds a new pipeline
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layout object describing the union of all the descriptors and push constants of all the shaders
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used by the pipeline.</p>
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<p>The <code>PipelineLayout</code> struct describes the pipeline layout to both the Vulkan implementation and
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to vulkano. It holds a template parameter whose type must implement the <code>PipelineLayoutDesc</code>
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trait.</p>
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<h1 id="the-pipelinelayoutabstract-trait" class="section-header"><a href="#the-pipelinelayoutabstract-trait">The PipelineLayoutAbstract trait</a></h1>
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<p>All the functions in vulkano that operate on pipeline layout objects (for example, creating a
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descriptor set) do not take directly a <code>PipelineLayout</code> struct as parameter. Instead they can
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take any object that implements the <code>PipelineLayoutAbstract</code> trait.</p>
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<p>This trait represents any object that holds a <code>PipelineLayout</code>. It is implemented on the
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<code>PipelineLayout</code> struct itself (obviously), but also notably on <code>GraphicsPipeline</code> and
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<code>ComputePipeline</code>. In other words, you can for example create a descriptor set by passing a
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graphics pipeline as parameter.</p>
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<h1 id="custom-pipeline-layouts" class="section-header"><a href="#custom-pipeline-layouts">Custom pipeline layouts</a></h1>
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<p>In some situations, it is better (as in, faster) to share the same descriptor set or sets
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between multiple pipelines that each use different descriptors. To do so, you have to create a
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pipeline layout object in advance and pass it when you create the pipelines.</p>
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<p>TODO: write this section</p>
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</div><h2 id='structs' class='section-header'><a href="#structs">Structs</a></h2>
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<table><tr class='module-item'><td><a class="struct" href="struct.EmptyPipelineDesc.html" title='vulkano::descriptor::pipeline_layout::EmptyPipelineDesc struct'>EmptyPipelineDesc</a></td><td class='docblock-short'><p>Description of an empty pipeline layout.</p>
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</td></tr><tr class='module-item'><td><a class="struct" href="struct.PipelineLayout.html" title='vulkano::descriptor::pipeline_layout::PipelineLayout struct'>PipelineLayout</a></td><td class='docblock-short'><p>Wrapper around the <code>PipelineLayout</code> Vulkan object. Describes to the Vulkan implementation the
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descriptor sets and push constants available to your shaders</p>
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</td></tr><tr class='module-item'><td><a class="struct" href="struct.PipelineLayoutDescPcRange.html" title='vulkano::descriptor::pipeline_layout::PipelineLayoutDescPcRange struct'>PipelineLayoutDescPcRange</a></td><td class='docblock-short'><p>Description of a range of the push constants of a pipeline layout.</p>
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</td></tr><tr class='module-item'><td><a class="struct" href="struct.PipelineLayoutDescUnion.html" title='vulkano::descriptor::pipeline_layout::PipelineLayoutDescUnion struct'>PipelineLayoutDescUnion</a></td><td class='docblock-short'><p>Contains the union of two pipeline layout description.</p>
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</td></tr><tr class='module-item'><td><a class="struct" href="struct.PipelineLayoutSys.html" title='vulkano::descriptor::pipeline_layout::PipelineLayoutSys struct'>PipelineLayoutSys</a></td><td class='docblock-short'><p>Opaque object that is borrowed from a <code>PipelineLayout</code>.</p>
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</td></tr><tr class='module-item'><td><a class="struct" href="struct.RuntimePipelineDesc.html" title='vulkano::descriptor::pipeline_layout::RuntimePipelineDesc struct'>RuntimePipelineDesc</a></td><td class='docblock-short'><p>Runtime description of a pipeline layout.</p>
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</td></tr></table><h2 id='enums' class='section-header'><a href="#enums">Enums</a></h2>
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<table><tr class='module-item'><td><a class="enum" href="enum.PipelineLayoutCreationError.html" title='vulkano::descriptor::pipeline_layout::PipelineLayoutCreationError enum'>PipelineLayoutCreationError</a></td><td class='docblock-short'><p>Error that can happen when creating a pipeline layout.</p>
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</td></tr><tr class='module-item'><td><a class="enum" href="enum.PipelineLayoutLimitsError.html" title='vulkano::descriptor::pipeline_layout::PipelineLayoutLimitsError enum'>PipelineLayoutLimitsError</a></td><td class='docblock-short'><p>The pipeline layout description isn't compatible with the hardware limits.</p>
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</td></tr><tr class='module-item'><td><a class="enum" href="enum.PipelineLayoutNotSupersetError.html" title='vulkano::descriptor::pipeline_layout::PipelineLayoutNotSupersetError enum'>PipelineLayoutNotSupersetError</a></td><td class='docblock-short'><p>Error that can happen when creating a graphics pipeline.</p>
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</td></tr><tr class='module-item'><td><a class="enum" href="enum.RuntimePipelineDescError.html" title='vulkano::descriptor::pipeline_layout::RuntimePipelineDescError enum'>RuntimePipelineDescError</a></td><td class='docblock-short'><p>Error when building a persistent descriptor set.</p>
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</td></tr></table><h2 id='traits' class='section-header'><a href="#traits">Traits</a></h2>
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<table><tr class='module-item'><td><a class="trait" href="trait.PipelineLayoutAbstract.html" title='vulkano::descriptor::pipeline_layout::PipelineLayoutAbstract trait'>PipelineLayoutAbstract</a></td><td class='docblock-short'><p>Trait for objects that describe the layout of the descriptors and push constants of a pipeline.</p>
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</td></tr><tr class='module-item'><td><a class="trait" href="trait.PipelineLayoutDesc.html" title='vulkano::descriptor::pipeline_layout::PipelineLayoutDesc trait'>PipelineLayoutDesc</a></td><td class='docblock-short'><p>Trait for objects that describe the layout of the descriptors and push constants of a pipeline.</p>
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</td></tr><tr class='module-item'><td><a class="trait" href="trait.PipelineLayoutPushConstantsCompatible.html" title='vulkano::descriptor::pipeline_layout::PipelineLayoutPushConstantsCompatible trait'>PipelineLayoutPushConstantsCompatible</a></td><td class='docblock-short'><p>Traits that allow determining whether</p>
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</td></tr><tr class='module-item'><td><a class="trait" href="trait.PipelineLayoutSetsCompatible.html" title='vulkano::descriptor::pipeline_layout::PipelineLayoutSetsCompatible trait'>PipelineLayoutSetsCompatible</a></td><td class='docblock-short'><p>Traits that allow determining whether</p>
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</td></tr><tr class='module-item'><td><a class="trait" href="trait.PipelineLayoutSuperset.html" title='vulkano::descriptor::pipeline_layout::PipelineLayoutSuperset trait'>PipelineLayoutSuperset</a></td><td class='docblock-short'><p>Traits that allow determining whether a pipeline layout is a superset of another one.</p>
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