deps(lambda-rs-platform): Remove shaderc as a shader backend

Author: vmarcella

Cargo.lock

@@ -80,8 +80,6 @@ cargo add lambda-rs
 #### Required external dependencies <a name="ext_deps"></a>
 
 * All platforms
-  * `cmake >= 3.20.0` is needed to build shaderc from source.
-  * `ninja` is needed to build shaderc from source.
   * `git` is needed to clone the project and manage it's dependencies.
   * `git-lfs` is needed for asset files.
   * `rust >= 1.60` is needed for compiling lambda and all of it's crates.

README.md

@@ -12,7 +12,6 @@ path = "src/lib.rs"
 
 [dependencies]
 winit = "=0.29.15"
-shaderc = { version = "=0.7", optional = true, default-features = false }
 naga = { version = "=28.0.0", optional = true, default-features = false, features = [
   "spv-out",
   "glsl-in",
@@ -37,11 +36,6 @@ mockall = "=0.14.0"
 default = ["wgpu", "shader-backend-naga"]
 
 shader-backend-naga = ["dep:naga"]
-shader-backend-shaderc = ["dep:shaderc"]
-shader-backend-shaderc-build-from-source = [
-  "shader-backend-shaderc",
-  "shaderc/build-from-source",
-]
 
 wgpu = [
   "dep:wgpu",

crates/lambda-rs-platform/Cargo.toml

@@ -12,7 +12,6 @@
 pub mod obj;
 pub mod rand;
 pub mod shader;
-pub mod shaderc;
 #[cfg(feature = "wgpu")]
 pub mod wgpu;
 pub mod winit;

crates/lambda-rs-platform/src/lib.rs

@@ -9,27 +9,8 @@ pub use types::{
 #[cfg(feature = "shader-backend-naga")]
 mod naga;
 
-#[cfg(feature = "shader-backend-shaderc")]
-mod shaderc_backend;
-
 #[cfg(feature = "shader-backend-naga")]
 pub use naga::{
   ShaderCompiler,
   ShaderCompilerBuilder,
 };
-#[cfg(all(
-  feature = "shader-backend-naga",
-  feature = "shader-backend-shaderc"
-))]
-pub use naga::{
-  ShaderCompiler,
-  ShaderCompilerBuilder,
-};
-#[cfg(all(
-  not(feature = "shader-backend-naga"),
-  feature = "shader-backend-shaderc"
-))]
-pub use shaderc_backend::{
-  ShaderCompiler,
-  ShaderCompilerBuilder,
-};

crates/lambda-rs-platform/src/shader/mod.rs

@@ -31,11 +31,6 @@ with-wgpu-vulkan=["with-wgpu", "lambda-rs-platform/wgpu-with-vulkan"]
 with-wgpu-metal=["with-wgpu", "lambda-rs-platform/wgpu-with-metal"]
 with-wgpu-dx12=["with-wgpu", "lambda-rs-platform/wgpu-with-dx12"]
 with-wgpu-gl=["with-wgpu", "lambda-rs-platform/wgpu-with-gl"]
-with-shaderc=["lambda-rs-platform/shader-backend-shaderc"]
-with-shaderc-build-from-source=[
-  "with-shaderc",
-  "lambda-rs-platform/shader-backend-shaderc-build-from-source",
-]
 
 # ------------------------------ RENDER VALIDATION -----------------------------
 # Granular, opt-in validation flags for release builds. Debug builds enable

crates/lambda-rs-platform/src/shader/shaderc_backend.rs

@@ -5,8 +5,8 @@
 //!   GLSL source or file path + metadata) into a SPIR‑V binary suitable for
 //!   pipeline creation.
 //!
-//! Use the platform’s shader backend configured for the workspace (e.g., naga
-//! or shaderc) without exposing backend‑specific types in the public API.
+//! Use the platform’s shader backend configured for the workspace (naga)
+//! without exposing backend‑specific types in the public API.
 
 // Expose the platform shader compiler abstraction
 pub use lambda_platform::shader::{

crates/lambda-rs-platform/src/shaderc.rs

@@ -3,13 +3,13 @@ title: "Cargo Features Overview"
 document_id: "features-2025-11-17"
 status: "living"
 created: "2025-11-17T23:59:00Z"
-last_updated: "2025-12-22T00:00:00Z"
-version: "0.1.5"
+last_updated: "2026-01-25T00:00:00Z"
+version: "0.1.6"
 engine_workspace_version: "2023.1.30"
 wgpu_version: "26.0.1"
 shader_backend_default: "naga"
 winit_version: "0.29.10"
-repo_commit: "58e7dd9f9b98b05302b8b4cfe4d653e61796c153"
+repo_commit: "229960fd426cf605c7513002b36e3942f14a3140"
 owners: ["lambda-sh"]
 reviewers: ["engine", "rendering"]
 tags: ["guide", "features", "validation", "cargo"]
@@ -39,7 +39,6 @@ This document enumerates the primary Cargo features exposed by the workspace rel
 ## Shader Backends
 - `lambda-rs-platform`
   - `shader-backend-naga` (default): uses `naga` for shader handling.
-  - `shader-backend-shaderc`: uses `shaderc`; optional `shader-backend-shaderc-build-from-source`.
 
 ## Render Validation
 
@@ -86,6 +85,8 @@ Usage examples
   - `cargo test -p lambda-rs --features render-validation-msaa`
 
 ## Changelog
+- 0.1.6 (2026-01-25): Remove the deprecated legacy shader backend
+  documentation.
 - 0.1.5 (2025-12-22): Align `lambda-rs` Cargo feature umbrella composition with
   the documented render-validation feature set, including `render-validation-pass-compat`
   and `render-validation-render-targets`.