diff --git a/README.md b/README.md
index 54fe923..b67e1f2 100644
--- a/README.md
+++ b/README.md
@@ -22,21 +22,22 @@ librashader does not support legacy render APIs such as older versions of OpenGL
 support for Direct3D 9.
 
 | **API**     | **Status** | **`librashader` feature** |
-|-------------|------------|---------------------------|
-| OpenGL 3.3+ | ✅          | `gl`                      |
-| OpenGL 4.6  | ✅          | `gl`                      |
-| Vulkan      | ✅          | `vk`                      |
-| Direct3D 9  | ⚠️         | `d3d9`                    |
-| Direct3D 11 | ✅          | `d3d11`                   |
-| Direct3D 12 | ✅          | `d3d12`                   |
-| Metal       | ✅          | `metal`                   |
-| wgpu        | 🆗         | `wgpu`                    |
+|-------------|------------|--------------------------|
+| OpenGL 3.3+ | ✅         | `gl`                     |
+| OpenGL 4.6  | ✅         | `gl`                     |
+| Vulkan      | ✅         | `vk`                     |
+| Direct3D 9  | 🆗️         |`d3d9`                    |
+| Direct3D 11 | ✅         | `d3d11`                  |
+| Direct3D 12 | ✅         | `d3d12`                  |
+| Metal       | ✅         | `metal`                  |
+| wgpu        | 🆗         | `wgpu`                   |
 
-✅ Full Support — 🆗 Secondary Support — ⚠️ ️Experimental Support
+✅ Full Support — 🆗 Secondary Support 
 
-wgpu may not support all shaders due to restrictions from WGSL. Direct3D 9 support is experimental and does not fully
-support features such as previous frame feedback or history, as well as being unable to support shaders that need Direct3D 10+
-only features. 
+Shader compatibility is not guaranteed on render APIs with secondary support. 
+
+wgpu has restrictions on shaders that can not be converted to WGSL, such as those that use `inverse`. Direct3D 9 does not support
+shaders that need Direct3D 10+ only features, or shaders that can not be compiled to [Shader Model 3.0](https://learn.microsoft.com/en-us/windows/win32/direct3dhlsl/shader-model-3).
 
 ## Usage
 
@@ -74,6 +75,7 @@ is not available to OpenGL.
 The Metal runtime is **not thread safe**. However you can still defer submission of GPU resource initialization through the
 `filter_chain_create_deferred` function.
 
+The Direct3D 9 API is not thread safe, unless `D3DCREATE_MULTITHREADED` is enabled at device creation.
 ### Quad vertices and rotations
 All runtimes render intermediate passes with an identity matrix MVP and a VBO for with range `[-1, 1]`. The final pass uses a
 Quad VBO with range `[0, 1]` and the following projection matrix by default.
@@ -127,6 +129,7 @@ The following Rust examples show how to use each librashader runtime.
 * [Direct3D 11](https://github.com/SnowflakePowered/librashader/blob/master/librashader-runtime-d3d11/tests/triangle.rs)
 * [Direct3D 12](https://github.com/SnowflakePowered/librashader/blob/master/librashader-runtime-d3d12/tests/triangle.rs)
 * [wgpu](https://github.com/SnowflakePowered/librashader/blob/master/librashader-runtime-wgpu/tests/hello_triangle.rs)
+* [Direct3D 9](https://github.com/SnowflakePowered/librashader/blob/master/librashader-runtime-d3d9/tests/triangle.rs)
 
 Some basic examples on using the C API are also provided.
 
diff --git a/librashader/src/lib.rs b/librashader/src/lib.rs
index 13c0d8e..0dd8469 100644
--- a/librashader/src/lib.rs
+++ b/librashader/src/lib.rs
@@ -15,8 +15,8 @@
 //! called with appropriate input and output parameters to draw a frame with the shader effect applied.
 //!
 //! ## Runtimes
-//! librashader supports all modern graphics runtimes, including wgpu, Vulkan, OpenGL 3.3+ and 4.6 (with DSA),
-//! Direct3D 11, Direct3D 12, and Metal.
+//! librashader supports most modern graphics runtimes, including Vulkan, OpenGL 3.3+ and 4.6 (with DSA),
+//! Direct3D 11, Direct3D 12, and Metal. Secondary support is available for wgpu and Direct3D 9.
 //!
 //! The Direct3D 12 runtime requires support for [render passes](https://learn.microsoft.com/en-us/windows/win32/direct3d12/direct3d-12-render-passes), which
 //! have been available since Windows 10, version 1809.
@@ -24,8 +24,11 @@
 //! The Vulkan runtime can use [`VK_KHR_dynamic_rendering`](https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/VK_KHR_dynamic_rendering.html)
 //! for improved performance, if the underlying hardware supports it.
 //!
-//! Direct3D 9 support is experimental and is not guaranteed to work with all shaders. In particular, history and feedback is currently not supported.
-//! Many shaders will also fail to compile due to missing or insufficient features in Direct3D 9.
+//! Shader compatibility is not guaranteed on render APIs with secondary support.
+//!
+//! wgpu has restrictions on shaders that can not be converted to WGSL, such as those that use `inverse`.
+//! Direct3D 9 does not support shaders that need Direct3D 10+ only features, or shaders that can not be
+//! compiled to [Shader Model 3.0](https://learn.microsoft.com/en-us/windows/win32/direct3dhlsl/shader-model-3).
 //!
 //! wgpu support is not available in the librashader C API.
 //!
@@ -34,13 +37,13 @@
 //! | OpenGL 3.3+ | ✅        | `gl`                      |
 //! | OpenGL 4.6  | ✅        | `gl`                      |
 //! | Vulkan      | ✅        | `vk`                      |
-//! | Direct3D 9  | ⚠️        | `d3d9`                   |
+//! | Direct3D 9  | 🆗️        | `d3d9`                   |
 //! | Direct3D 11 | ✅        | `d3d11`                   |
 //! | Direct3D 12 | ✅        | `d3d12`                   |
 //! | Metal       | ✅        | `metal`                   |
 //! | wgpu        | 🆗         | `wgpu`                    |
 //!
-//! ✅ Full Support — 🆗 Secondary Support — ⚠️ ️Experimental Support
+//! ✅ Full Support — 🆗 Secondary Support
 //!
 //! ## C API
 //! For documentation on the librashader C API, see [librashader-capi](https://docs.rs/librashader-capi/latest/librashader_capi/),