diff --git a/librashader-runtime-d3d11/src/error.rs b/librashader-runtime-d3d11/src/error.rs
index 86f6cf7..fe42a82 100644
--- a/librashader-runtime-d3d11/src/error.rs
+++ b/librashader-runtime-d3d11/src/error.rs
@@ -1,9 +1,12 @@
+//! Direct3D11 shader runtime errors.
+//!
 use librashader_preprocess::PreprocessError;
 use librashader_presets::ParsePresetError;
 use librashader_reflect::error::{ShaderCompileError, ShaderReflectError};
 use librashader_runtime::image::ImageError;
 use thiserror::Error;
 
+/// Cumulative error type for Direct3D11 filter chains.
 #[derive(Error, Debug)]
 pub enum FilterChainError {
     #[error("unable to get direct3d context")]
@@ -24,4 +27,5 @@ pub enum FilterChainError {
     LutLoadError(#[from] ImageError),
 }
 
+/// Result type for Direct3D11 filter chains.
 pub type Result<T> = std::result::Result<T, FilterChainError>;
diff --git a/librashader-runtime-d3d11/src/filter_chain.rs b/librashader-runtime-d3d11/src/filter_chain.rs
index 40e0bcc..616edd9 100644
--- a/librashader-runtime-d3d11/src/filter_chain.rs
+++ b/librashader-runtime-d3d11/src/filter_chain.rs
@@ -46,6 +46,7 @@ type ShaderPassMeta = (
     >,
 );
 
+/// A Direct3D 11 filter chain.
 pub struct FilterChain {
     pub(crate) common: FilterCommon,
     pub(crate) passes: Vec<FilterPass>,
diff --git a/librashader-runtime-d3d11/src/options.rs b/librashader-runtime-d3d11/src/options.rs
index 27028a9..aa0c7de 100644
--- a/librashader-runtime-d3d11/src/options.rs
+++ b/librashader-runtime-d3d11/src/options.rs
@@ -1,3 +1,5 @@
+//! Direct3D11 shader runtime options.
+
 /// Options for each Direct3D11 shader frame.
 #[repr(C)]
 #[derive(Debug, Clone)]
diff --git a/librashader-runtime-d3d11/src/texture.rs b/librashader-runtime-d3d11/src/texture.rs
index e1c3625..09a21bd 100644
--- a/librashader-runtime-d3d11/src/texture.rs
+++ b/librashader-runtime-d3d11/src/texture.rs
@@ -13,12 +13,19 @@ use windows::Win32::Graphics::Dxgi::Common::DXGI_SAMPLE_DESC;
 use crate::error::Result;
 use crate::framebuffer::OwnedFramebuffer;
 
+
+/// An image view for use as a shader resource.
+///
+/// Contains an `ID3D11ShaderResourceView`, and a size.
 #[derive(Debug, Clone)]
 pub struct D3D11InputView {
     pub handle: ID3D11ShaderResourceView,
     pub size: Size<u32>,
 }
 
+/// An image view for use as a render target.
+///
+/// Contains an `ID3D11RenderTargetView`, and a size.
 #[derive(Debug, Clone)]
 pub struct D3D11OutputView {
     pub handle: ID3D11RenderTargetView,
diff --git a/librashader-runtime-gl/src/error.rs b/librashader-runtime-gl/src/error.rs
index b181656..d92d3a4 100644
--- a/librashader-runtime-gl/src/error.rs
+++ b/librashader-runtime-gl/src/error.rs
@@ -1,3 +1,5 @@
+//! OpenGL shader runtime errors.
+
 use gl::types::GLenum;
 use librashader_preprocess::PreprocessError;
 use librashader_presets::ParsePresetError;
@@ -5,6 +7,7 @@ use librashader_reflect::error::{ShaderCompileError, ShaderReflectError};
 use librashader_runtime::image::ImageError;
 use thiserror::Error;
 
+/// Cumulative error type for OpenGL filter chains.
 #[derive(Error, Debug)]
 pub enum FilterChainError {
     #[error("fbo initialization error")]
@@ -27,4 +30,5 @@ pub enum FilterChainError {
     GLLinkError,
 }
 
+/// Result type for OpenGL filter chains.
 pub type Result<T> = std::result::Result<T, FilterChainError>;
diff --git a/librashader-runtime-gl/src/filter_chain/mod.rs b/librashader-runtime-gl/src/filter_chain/mod.rs
index f96c930..0078d64 100644
--- a/librashader-runtime-gl/src/filter_chain/mod.rs
+++ b/librashader-runtime-gl/src/filter_chain/mod.rs
@@ -16,11 +16,13 @@ mod parameters;
 pub(crate) use filter_impl::FilterCommon;
 use librashader_common::{Size, Viewport};
 
+/// An OpenGL filter chain.
 pub struct FilterChain {
     pub(in crate::filter_chain) filter: FilterChainDispatch,
 }
 
 impl FilterChain {
+    /// Load a filter chain from a pre-parsed `ShaderPreset`.
     pub fn load_from_preset(
         preset: ShaderPreset,
         options: Option<&FilterChainOptions>,
diff --git a/librashader-runtime-gl/src/framebuffer.rs b/librashader-runtime-gl/src/framebuffer.rs
index eba007c..7ca65f9 100644
--- a/librashader-runtime-gl/src/framebuffer.rs
+++ b/librashader-runtime-gl/src/framebuffer.rs
@@ -1,10 +1,17 @@
 use gl::types::{GLenum, GLuint};
 use librashader_common::Size;
 
+/// A handle to an OpenGL texture with format and size information.
+///
+/// Generally for use as shader resource inputs.
 #[derive(Default, Debug, Copy, Clone)]
 pub struct GLImage {
+    /// A GLuint to the texture.
     pub handle: GLuint,
+    /// The format of the texture.
     pub format: GLenum,
+    /// The size of the texture.
     pub size: Size<u32>,
+    /// The padded size of the texture. Currently unused and can be ignored.
     pub padded_size: Size<u32>,
 }
diff --git a/librashader-runtime-gl/src/gl/framebuffer.rs b/librashader-runtime-gl/src/gl/framebuffer.rs
index 3f0759e..a5381e3 100644
--- a/librashader-runtime-gl/src/gl/framebuffer.rs
+++ b/librashader-runtime-gl/src/gl/framebuffer.rs
@@ -6,6 +6,10 @@ use gl::types::{GLenum, GLuint};
 use librashader_common::{FilterMode, ImageFormat, Size, Viewport, WrapMode};
 use librashader_presets::Scale2D;
 
+
+/// A handle to an OpenGL FBO and its backing texture with format and size information.
+///
+/// Generally for use as render targets.
 #[derive(Debug)]
 pub struct Framebuffer {
     pub(crate) image: GLuint,
@@ -23,6 +27,8 @@ impl Framebuffer {
     }
 
     /// Create a framebuffer from an already initialized texture and framebuffer.
+    ///
+    /// The framebuffer will not be deleted when this struct is dropped.
     pub fn new_from_raw(
         texture: GLuint,
         fbo: GLuint,
diff --git a/librashader-runtime-gl/src/options.rs b/librashader-runtime-gl/src/options.rs
index 83a3b18..1a06844 100644
--- a/librashader-runtime-gl/src/options.rs
+++ b/librashader-runtime-gl/src/options.rs
@@ -1,3 +1,5 @@
+//! OpenGL shader runtime options.
+
 /// Options for each OpenGL shader frame.
 #[repr(C)]
 #[derive(Debug, Clone)]
diff --git a/librashader-runtime-vk/src/error.rs b/librashader-runtime-vk/src/error.rs
index aac8dd5..0672b6b 100644
--- a/librashader-runtime-vk/src/error.rs
+++ b/librashader-runtime-vk/src/error.rs
@@ -1,9 +1,11 @@
+//! Vulkan shader runtime errors.
 use librashader_preprocess::PreprocessError;
 use librashader_presets::ParsePresetError;
 use librashader_reflect::error::{ShaderCompileError, ShaderReflectError};
 use librashader_runtime::image::ImageError;
 use thiserror::Error;
 
+/// Cumulative error type for Vulkan filter chains.
 #[derive(Error, Debug)]
 pub enum FilterChainError {
     #[error("SPIRV reflection error")]
@@ -22,4 +24,5 @@ pub enum FilterChainError {
     VulkanResult(#[from] ash::vk::Result),
 }
 
+/// Result type for Vulkan filter chains.
 pub type Result<T> = std::result::Result<T, FilterChainError>;
diff --git a/librashader-runtime-vk/src/filter_chain.rs b/librashader-runtime-vk/src/filter_chain.rs
index 3ac60d0..d78d246 100644
--- a/librashader-runtime-vk/src/filter_chain.rs
+++ b/librashader-runtime-vk/src/filter_chain.rs
@@ -28,7 +28,8 @@ use std::collections::VecDeque;
 use std::path::Path;
 use crate::options::{FilterChainOptions, FrameOptions};
 
-pub struct Vulkan {
+/// A Vulkan device and metadata that is required by the shader runtime.
+pub struct VulkanDevice {
     pub(crate) device: ash::Device,
     pub(crate) memory_properties: vk::PhysicalDeviceMemoryProperties,
     queue: vk::Queue,
@@ -54,7 +55,7 @@ pub struct VulkanInstance {
     pub get_instance_proc_addr: vk::PFN_vkGetInstanceProcAddr,
 }
 
-impl TryFrom<VulkanInstance> for Vulkan {
+impl TryFrom<VulkanInstance> for VulkanDevice {
     type Error = FilterChainError;
 
     fn try_from(vulkan: VulkanInstance) -> Result<Self, FilterChainError> {
@@ -75,7 +76,7 @@ impl TryFrom<VulkanInstance> for Vulkan {
             let memory_properties =
                 instance.get_physical_device_memory_properties(vulkan.physical_device);
 
-            Ok(Vulkan {
+            Ok(VulkanDevice {
                 device,
                 queue,
                 pipeline_cache,
@@ -86,7 +87,7 @@ impl TryFrom<VulkanInstance> for Vulkan {
     }
 }
 
-impl TryFrom<(vk::PhysicalDevice, ash::Instance, ash::Device)> for Vulkan {
+impl TryFrom<(vk::PhysicalDevice, ash::Instance, ash::Device)> for VulkanDevice {
     type Error = FilterChainError;
 
     fn try_from(value: (vk::PhysicalDevice, ash::Instance, ash::Device)) -> error::Result<Self> {
@@ -99,7 +100,7 @@ impl TryFrom<(vk::PhysicalDevice, ash::Instance, ash::Device)> for Vulkan {
 
             let memory_properties = value.1.get_physical_device_memory_properties(value.0);
 
-            Ok(Vulkan {
+            Ok(VulkanDevice {
                 device,
                 queue,
                 pipeline_cache,
@@ -110,10 +111,11 @@ impl TryFrom<(vk::PhysicalDevice, ash::Instance, ash::Device)> for Vulkan {
     }
 }
 
-pub struct FilterChainVulkan {
+/// A Vulkan filter chain.
+pub struct FilterChain {
     pub(crate) common: FilterCommon,
     passes: Box<[FilterPass]>,
-    vulkan: Vulkan,
+    vulkan: VulkanDevice,
     output_framebuffers: Box<[OwnedImage]>,
     feedback_framebuffers: Box<[OwnedImage]>,
     history_framebuffers: VecDeque<OwnedImage>,
@@ -136,6 +138,11 @@ pub(crate) struct FilterCommon {
     pub device: ash::Device,
 }
 
+/// Contains residual intermediate `VkImageView` and `VkImage` objects created
+/// for intermediate shader passes.
+///
+/// These Vulkan objects must stay alive until the command buffer is submitted
+/// to the rendering queue, and the GPU is done with the objects.
 #[must_use]
 pub struct FrameIntermediates {
     device: ash::Device,
@@ -173,34 +180,35 @@ impl FrameIntermediates {
     }
 }
 
-impl FilterChainVulkan {
+impl FilterChain {
     /// Load the shader preset at the given path into a filter chain.
     pub fn load_from_path(
-        vulkan: impl TryInto<Vulkan, Error = FilterChainError>,
+        vulkan: impl TryInto<VulkanDevice, Error = FilterChainError>,
         path: impl AsRef<Path>,
         options: Option<&FilterChainOptions>,
-    ) -> error::Result<FilterChainVulkan> {
+    ) -> error::Result<FilterChain> {
         // load passes from preset
         let preset = ShaderPreset::try_parse(path)?;
         Self::load_from_preset(vulkan, preset, options)
     }
 
+    /// Load a filter chain from a pre-parsed `ShaderPreset`.
     pub fn load_from_preset(
-        vulkan: impl TryInto<Vulkan, Error = FilterChainError>,
+        vulkan: impl TryInto<VulkanDevice, Error = FilterChainError>,
         preset: ShaderPreset,
         options: Option<&FilterChainOptions>,
-    ) -> error::Result<FilterChainVulkan> {
-        let (passes, semantics) = FilterChainVulkan::load_preset(preset.shaders, &preset.textures)?;
+    ) -> error::Result<FilterChain> {
+        let (passes, semantics) = FilterChain::load_preset(preset.shaders, &preset.textures)?;
         let device = vulkan.try_into()?;
 
         // initialize passes
         let filters = Self::init_passes(&device, passes, &semantics, 3)?;
 
-        let luts = FilterChainVulkan::load_luts(&device, &preset.textures)?;
+        let luts = FilterChain::load_luts(&device, &preset.textures)?;
         let samplers = SamplerSet::new(&device.device)?;
 
         let (history_framebuffers, history_textures) =
-            FilterChainVulkan::init_history(&device, &filters)?;
+            FilterChain::init_history(&device, &filters)?;
 
         let mut output_framebuffers = Vec::new();
         output_framebuffers.resize_with(filters.len(), || {
@@ -222,7 +230,7 @@ impl FilterChainVulkan {
         let mut feedback_textures = Vec::new();
         feedback_textures.resize_with(filters.len(), || None);
 
-        Ok(FilterChainVulkan {
+        Ok(FilterChain {
             common: FilterCommon {
                 luts,
                 samplers,
@@ -303,7 +311,7 @@ impl FilterChainVulkan {
     }
 
     fn init_passes(
-        vulkan: &Vulkan,
+        vulkan: &VulkanDevice,
         passes: Vec<ShaderPassMeta>,
         semantics: &ShaderSemantics,
         frames_in_flight: u32,
@@ -377,7 +385,7 @@ impl FilterChainVulkan {
     }
 
     fn load_luts(
-        vulkan: &Vulkan,
+        vulkan: &VulkanDevice,
         textures: &[TextureConfig],
     ) -> error::Result<FxHashMap<usize, LutTexture>> {
         let mut luts = FxHashMap::default();
@@ -437,7 +445,7 @@ impl FilterChainVulkan {
     }
 
     fn init_history(
-        vulkan: &Vulkan,
+        vulkan: &VulkanDevice,
         filters: &[FilterPass],
     ) -> error::Result<(VecDeque<OwnedImage>, Box<[Option<InputImage>]>)> {
         let mut required_images = 0;
diff --git a/librashader-runtime-vk/src/framebuffer.rs b/librashader-runtime-vk/src/framebuffer.rs
index a2a958a..5246b02 100644
--- a/librashader-runtime-vk/src/framebuffer.rs
+++ b/librashader-runtime-vk/src/framebuffer.rs
@@ -1,4 +1,4 @@
-use crate::filter_chain::Vulkan;
+use crate::filter_chain::VulkanDevice;
 use crate::texture::VulkanImage;
 use crate::{error, util};
 use ash::vk;
@@ -13,7 +13,7 @@ pub(crate) struct OutputImage {
 }
 
 impl OutputImage {
-    pub fn new(vulkan: &Vulkan, image: VulkanImage) -> error::Result<OutputImage> {
+    pub fn new(vulkan: &VulkanDevice, image: VulkanImage) -> error::Result<OutputImage> {
         let image_subresource = vk::ImageSubresourceRange::builder()
             .base_mip_level(0)
             .base_array_layer(0)
diff --git a/librashader-runtime-vk/src/hello_triangle/mod.rs b/librashader-runtime-vk/src/hello_triangle/mod.rs
index e24b680..60ba1c1 100644
--- a/librashader-runtime-vk/src/hello_triangle/mod.rs
+++ b/librashader-runtime-vk/src/hello_triangle/mod.rs
@@ -8,7 +8,7 @@ mod swapchain;
 mod syncobjects;
 pub mod vulkan_base;
 
-use crate::filter_chain::{FilterChainVulkan, Vulkan};
+use crate::filter_chain::{FilterChain, VulkanDevice};
 use crate::hello_triangle::command::VulkanCommandPool;
 use crate::hello_triangle::framebuffer::VulkanFramebuffer;
 use crate::hello_triangle::pipeline::VulkanPipeline;
@@ -48,7 +48,7 @@ impl VulkanWindow {
         event_loop: EventLoop<()>,
         window: winit::window::Window,
         vulkan: VulkanDraw,
-        mut filter_chain: FilterChainVulkan,
+        mut filter_chain: FilterChain,
     ) {
         let mut counter = 0;
         event_loop.run(move |event, _, control_flow| match event {
@@ -136,7 +136,7 @@ impl VulkanWindow {
         vulkan.base.device.cmd_end_render_pass(cmd);
     }
 
-    fn draw_frame(frame: usize, vulkan: &VulkanDraw, filter: &mut FilterChainVulkan) {
+    fn draw_frame(frame: usize, vulkan: &VulkanDraw, filter: &mut FilterChain) {
         let index = frame % MAX_FRAMES_IN_FLIGHT;
         let in_flight = [vulkan.sync.in_flight[index]];
         let image_available = [vulkan.sync.image_available[index]];
@@ -370,7 +370,7 @@ pub struct VulkanDraw {
     pub sync: SyncObjects,
 }
 
-pub fn main(vulkan: VulkanBase, filter_chain: FilterChainVulkan) {
+pub fn main(vulkan: VulkanBase, filter_chain: FilterChain) {
     let event_loop = EventLoopBuilder::new()
         .with_any_thread(true)
         .with_dpi_aware(true)
diff --git a/librashader-runtime-vk/src/hello_triangle/vulkan_base.rs b/librashader-runtime-vk/src/hello_triangle/vulkan_base.rs
index 7f1fe6d..9e74a6a 100644
--- a/librashader-runtime-vk/src/hello_triangle/vulkan_base.rs
+++ b/librashader-runtime-vk/src/hello_triangle/vulkan_base.rs
@@ -3,7 +3,7 @@ use std::borrow::Cow;
 use std::error::Error;
 
 use crate::error::FilterChainError;
-use crate::filter_chain::Vulkan;
+use crate::filter_chain::VulkanDevice;
 use crate::hello_triangle::debug::VulkanDebug;
 use crate::hello_triangle::physicaldevice::{find_queue_family, pick_physical_device};
 use crate::hello_triangle::surface::VulkanSurface;
@@ -158,11 +158,11 @@ impl Drop for VulkanBase {
     }
 }
 
-impl TryFrom<&VulkanBase> for Vulkan {
+impl TryFrom<&VulkanBase> for VulkanDevice {
     type Error = FilterChainError;
 
     fn try_from(value: &VulkanBase) -> Result<Self, Self::Error> {
-        Vulkan::try_from((
+        VulkanDevice::try_from((
             value.physical_device,
             value.instance.clone(),
             value.device.clone(),
diff --git a/librashader-runtime-vk/src/lib.rs b/librashader-runtime-vk/src/lib.rs
index 598bb64..2d1e484 100644
--- a/librashader-runtime-vk/src/lib.rs
+++ b/librashader-runtime-vk/src/lib.rs
@@ -20,8 +20,8 @@ mod vulkan_primitives;
 mod vulkan_state;
 
 pub use filter_chain::FrameIntermediates;
-pub use filter_chain::FilterChainVulkan;
-pub use filter_chain::Vulkan;
+pub use filter_chain::FilterChain;
+pub use filter_chain::VulkanDevice;
 pub use filter_chain::VulkanInstance;
 pub use texture::VulkanImage;
 
@@ -31,7 +31,7 @@ pub mod options;
 #[cfg(test)]
 mod tests {
     use super::*;
-    use crate::filter_chain::FilterChainVulkan;
+    use crate::filter_chain::FilterChain;
     use crate::hello_triangle::vulkan_base::VulkanBase;
 
     #[test]
@@ -39,7 +39,7 @@ mod tests {
         let entry = unsafe { ash::Entry::load().unwrap() };
         let base = VulkanBase::new(entry).unwrap();
         dbg!("finished");
-        let mut filter = FilterChainVulkan::load_from_path(
+        let mut filter = FilterChain::load_from_path(
             &base,
             // "../test/slang-shaders/border/gameboy-player/gameboy-player-crt-royale.slangp",
             "../test/slang-shaders/bezel/Mega_Bezel/Presets/MBZ__0__SMOOTH-ADV.slangp",
diff --git a/librashader-runtime-vk/src/luts.rs b/librashader-runtime-vk/src/luts.rs
index 97d9c8b..f774923 100644
--- a/librashader-runtime-vk/src/luts.rs
+++ b/librashader-runtime-vk/src/luts.rs
@@ -1,4 +1,4 @@
-use crate::filter_chain::Vulkan;
+use crate::filter_chain::VulkanDevice;
 use crate::texture::{InputImage, VulkanImage};
 use crate::vulkan_primitives::{VulkanBuffer, VulkanImageMemory};
 use crate::{error, util};
@@ -15,7 +15,7 @@ pub struct LutTexture {
 
 impl LutTexture {
     pub fn new(
-        vulkan: &Vulkan,
+        vulkan: &VulkanDevice,
         cmd: vk::CommandBuffer,
         image: Image<BGRA8>,
         config: &TextureConfig,
diff --git a/librashader-runtime-vk/src/options.rs b/librashader-runtime-vk/src/options.rs
index 9c9113c..2aa83b0 100644
--- a/librashader-runtime-vk/src/options.rs
+++ b/librashader-runtime-vk/src/options.rs
@@ -1,3 +1,5 @@
+//! Vulkan shader runtime options.
+
 /// Options for each Vulkan shader frame.
 #[repr(C)]
 #[derive(Debug, Clone)]
diff --git a/librashader-runtime-vk/src/parameters.rs b/librashader-runtime-vk/src/parameters.rs
index 8f36634..9211f6c 100644
--- a/librashader-runtime-vk/src/parameters.rs
+++ b/librashader-runtime-vk/src/parameters.rs
@@ -1,8 +1,8 @@
-use crate::FilterChainVulkan;
+use crate::FilterChain;
 use librashader_runtime::parameters::FilterChainParameters;
 use std::collections::hash_map::Iter;
 
-impl FilterChainParameters for FilterChainVulkan {
+impl FilterChainParameters for FilterChain {
     fn get_enabled_pass_count(&self) -> usize {
         self.common.config.passes_enabled
     }
diff --git a/librashader-runtime-vk/src/texture.rs b/librashader-runtime-vk/src/texture.rs
index e09405c..6d4982a 100644
--- a/librashader-runtime-vk/src/texture.rs
+++ b/librashader-runtime-vk/src/texture.rs
@@ -1,4 +1,4 @@
-use crate::filter_chain::Vulkan;
+use crate::filter_chain::VulkanDevice;
 use crate::util::find_vulkan_memory_type;
 use crate::vulkan_primitives::VulkanImageMemory;
 use crate::{error, util};
@@ -114,7 +114,7 @@ impl OwnedImage {
     }
 
     pub fn new(
-        vulkan: &Vulkan,
+        vulkan: &VulkanDevice,
         size: Size<u32>,
         format: ImageFormat,
         max_miplevels: u32,
@@ -505,6 +505,7 @@ impl Drop for OwnedImage {
     }
 }
 
+/// A handle to a `VkImage` with size and format information.
 #[derive(Clone)]
 pub struct VulkanImage {
     pub size: Size<u32>,