diff --git a/Cargo.lock b/Cargo.lock
index 9b68563..5b0849f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -465,6 +465,15 @@ dependencies = [
  "wasi",
 ]
 
+[[package]]
+name = "glam"
+version = "0.30.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f2d1aab06663bdce00d6ca5e5ed586ec8d18033a771906c993a1e3755b368d85"
+dependencies = [
+ "libm",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.15.2"
@@ -688,6 +697,12 @@ version = "0.2.172"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d750af042f7ef4f724306de029d18836c26c1765a54a6a3f094cbd23a7267ffa"
 
+[[package]]
+name = "libm"
+version = "0.2.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8355be11b20d696c8f18f6cc018c4e372165b1fa8126cef092399c9951984ffa"
+
 [[package]]
 name = "libredox"
 version = "0.1.3"
@@ -800,6 +815,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
 dependencies = [
  "autocfg",
+ "libm",
 ]
 
 [[package]]
@@ -1251,6 +1267,35 @@ dependencies = [
  "thiserror",
 ]
 
+[[package]]
+name = "spirv-std"
+version = "0.9.0"
+source = "git+https://github.com/Rust-GPU/rust-gpu?rev=de03e8d8c997c68aed1a950863c0d79ba9bd8c72#de03e8d8c997c68aed1a950863c0d79ba9bd8c72"
+dependencies = [
+ "bitflags 1.3.2",
+ "glam",
+ "libm",
+ "num-traits",
+ "spirv-std-macros",
+ "spirv-std-types",
+]
+
+[[package]]
+name = "spirv-std-macros"
+version = "0.9.0"
+source = "git+https://github.com/Rust-GPU/rust-gpu?rev=de03e8d8c997c68aed1a950863c0d79ba9bd8c72#de03e8d8c997c68aed1a950863c0d79ba9bd8c72"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "spirv-std-types",
+ "syn",
+]
+
+[[package]]
+name = "spirv-std-types"
+version = "0.9.0"
+source = "git+https://github.com/Rust-GPU/rust-gpu?rev=de03e8d8c997c68aed1a950863c0d79ba9bd8c72#de03e8d8c997c68aed1a950863c0d79ba9bd8c72"
+
 [[package]]
 name = "stable_deref_trait"
 version = "1.2.0"
@@ -1317,6 +1362,13 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "test-shaders"
+version = "0.1.0"
+dependencies = [
+ "spirv-std",
+]
+
 [[package]]
 name = "thiserror"
 version = "2.0.12"
diff --git a/Cargo.toml b/Cargo.toml
index 75d6799..64be376 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,7 @@
 [workspace]
 members = [
 	"crates/cargo-gpu",
+	"crates/test-shaders",
 	"crates/xtask",
 ]
 
diff --git a/crates/cargo-gpu/src/build.rs b/crates/cargo-gpu/src/build.rs
index 1bb5078..bcd8e01 100644
--- a/crates/cargo-gpu/src/build.rs
+++ b/crates/cargo-gpu/src/build.rs
@@ -116,6 +116,7 @@ impl Build {
     fn parse_compilation_result(&self, result: &CompileResult) -> anyhow::Result<()> {
         let shaders = match &result.module {
             ModuleResult::MultiModule(modules) => {
+                log::debug!("modules: {modules:#?}");
                 anyhow::ensure!(!modules.is_empty(), "No shader modules were compiled");
                 modules.iter().collect::<Vec<_>>()
             }
@@ -128,6 +129,7 @@ impl Build {
         let mut linkage: Vec<Linkage> = shaders
             .into_iter()
             .map(|(entry, filepath)| -> anyhow::Result<Linkage> {
+                log::debug!("Compiled {entry} to {filepath:?}");
                 use relative_path::PathExt as _;
                 let path = self.build.output_dir.join(
                     filepath
diff --git a/crates/test-shaders/Cargo.toml b/crates/test-shaders/Cargo.toml
new file mode 100644
index 0000000..00112cb
--- /dev/null
+++ b/crates/test-shaders/Cargo.toml
@@ -0,0 +1,11 @@
+[package]
+name = "test-shaders"
+version = "0.1.0"
+edition = "2024"
+
+[lib]
+crate-type = ["rlib", "cdylib"]
+
+[dependencies]
+spirv-std = { git = "https://github.com/Rust-GPU/rust-gpu", rev = "de03e8d8c997c68aed1a950863c0d79ba9bd8c72" }
+
diff --git a/crates/test-shaders/src/lib.rs b/crates/test-shaders/src/lib.rs
new file mode 100644
index 0000000..fde167d
--- /dev/null
+++ b/crates/test-shaders/src/lib.rs
@@ -0,0 +1,32 @@
+//! Test shaders.
+//!
+//! Here we have some shaders that have been problematic in the past.
+#![no_std]
+#![expect(
+    unexpected_cfgs,
+    reason = "rust-gpu uses the spirv attribute macro heavily"
+)]
+use spirv_std::{glam::Vec4, spirv};
+
+/// This shader has the same name as the vertex shader below it.
+/// It should be compiled and then named something so that the two
+/// don't clobber each other.
+/// See <https://github.com/Rust-GPU/cargo-gpu/issues/85>
+#[inline(never)]
+#[spirv(fragment(entry_point_name = "duplicate_main"))]
+pub const fn dupe_frag(in_color: Vec4, output: &mut Vec4) {
+    *output = in_color;
+}
+
+/// This shader has the same name as the fragment shader above it.
+/// It should be compiled and then named something so that the two
+/// don't clobber each other.
+/// See <https://github.com/Rust-GPU/cargo-gpu/issues/85>
+#[spirv(vertex(entry_point_name = "duplicate_main"))]
+pub const fn implicit_isosceles_vertex(
+    // Which vertex within the render unit are we rendering
+    #[spirv(vertex_index)] vertex_index: u32,
+    #[spirv(position)] clip_pos: &mut Vec4,
+) {
+    *clip_pos = Vec4::splat(vertex_index as f32);
+}
diff --git a/output/duplicate_main.1.spv b/output/duplicate_main.1.spv
new file mode 100644
index 0000000..c7b0fce
Binary files /dev/null and b/output/duplicate_main.1.spv differ
diff --git a/output/manifest.json b/output/manifest.json
new file mode 100644
index 0000000..67faf23
--- /dev/null
+++ b/output/manifest.json
@@ -0,0 +1,7 @@
+[
+  {
+    "source_path": "../../output/duplicate_main.1.spv",
+    "entry_point": "duplicate_main",
+    "wgsl_entry_point": "duplicate_main"
+  }
+]
\ No newline at end of file