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// Copyright (c) 2016 The vulkano developers
// Licensed under the Apache License, Version 2.0
// <LICENSE-APACHE or
// https://www.apache.org/licenses/LICENSE-2.0> or the MIT
// license <LICENSE-MIT or https://opensource.org/licenses/MIT>,
// at your option. All files in the project carrying such
// notice may not be copied, modified, or distributed except
// according to those terms.
//! A pipeline layout describes the layout of descriptors and push constants used by a graphics
//! pipeline or a compute pipeline.
//!
//! The layout itself only *describes* the descriptors and push constants, and does not contain
//! the content of the push constants or the actual list of resources that are going to be
//! available through the descriptors. Push constants are set when you submit a draw command, and
//! the list of resources is set by creating *descriptor set* objects and passing these sets when
//! you submit a draw command.
//!
//! # Pipeline layout objects
//!
//! A pipeline layout is something that you must describe to the Vulkan implementation by creating
//! a **pipeline layout object**, represented by the `PipelineLayout` struct in vulkano.
//!
//! Each graphics pipeline or compute pipeline that you create therefore holds a
//! **pipeline layout object** By default, creating a pipeline automatically builds a new pipeline
//! layout object describing the union of all the descriptors and push constants of all the shaders
//! used by the pipeline.
//!
//! The `PipelineLayout` struct describes the pipeline layout to both the Vulkan implementation and
//! to vulkano. It holds a `PipelineLayoutDesc` value.
//!
//! # Custom pipeline layouts
//!
//! In some situations, it is better (as in, faster) to share the same descriptor set or sets
//! between multiple pipelines that each use different descriptors. To do so, you have to create a
//! pipeline layout object in advance and pass it when you create the pipelines.
//!
//! TODO: write this section
pub use self::limits_check::PipelineLayoutLimitsError;
pub use self::sys::PipelineLayout;
pub use self::sys::PipelineLayoutCreationError;
pub use self::sys::PipelineLayoutPcRange;
pub use self::sys::PipelineLayoutSupersetError;
mod limits_check;
mod sys;
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