Added precompile test

Author: SupaMaggie70Incorporated

tests/Cargo.toml

@@ -34,7 +34,7 @@ webgl = ["wgpu/webgl"]
 test-build-with-profiling = ["profiling/type-check"]
 
 [dependencies]
-wgpu = { workspace = true, features = ["noop"] }
+wgpu = { workspace = true, features = ["noop", "precompile"] }
 wgpu-hal = { workspace = true, features = ["validation_canary"] }
 wgpu-macros.workspace = true
 

tests/tests/wgpu-gpu/main.rs

@@ -43,6 +43,7 @@ mod pipeline;
 mod pipeline_cache;
 mod planar_texture;
 mod poll;
+mod precompile;
 mod push_constants;
 mod query_set;
 mod queue_transfer;
@@ -104,6 +105,7 @@ fn all_tests() -> Vec<wgpu_test::GpuTestInitializer> {
     planar_texture::all_tests(&mut tests);
     poll::all_tests(&mut tests);
     push_constants::all_tests(&mut tests);
+    precompile::all_tests(&mut tests);
     query_set::all_tests(&mut tests);
     queue_transfer::all_tests(&mut tests);
     ray_tracing::all_tests(&mut tests);

tests/tests/wgpu-gpu/precompile/mod.rs

@@ -0,0 +1,31 @@
+use wgpu_test::{gpu_test, GpuTestConfiguration, GpuTestInitializer, TestParameters};
+
+pub fn all_tests(vec: &mut Vec<GpuTestInitializer>) {
+    vec.push(PRECOMPILE_ALL_STAGES_TEST);
+}
+
+#[gpu_test]
+static PRECOMPILE_ALL_STAGES_TEST: GpuTestConfiguration = GpuTestConfiguration::new()
+    .parameters(
+        TestParameters::default().features(wgpu::Features::EXPERIMENTAL_PASSTHROUGH_SHADERS),
+    )
+    .run_async(async |ctx| unsafe {
+        let _ = ctx
+            .device
+            .create_shader_module_passthrough(wgpu::precompile_wgsl!(
+                "tests/wgpu-gpu/precompile/shader.wgsl",
+                "vs_main"
+            ));
+        let _ = ctx
+            .device
+            .create_shader_module_passthrough(wgpu::precompile_wgsl!(
+                "tests/wgpu-gpu/precompile/shader.wgsl",
+                "fs_main"
+            ));
+        let _ = ctx
+            .device
+            .create_shader_module_passthrough(wgpu::precompile_wgsl!(
+                "tests/wgpu-gpu/precompile/shader.wgsl",
+                "cs_main"
+            ));
+    });

tests/tests/wgpu-gpu/precompile/shader.wgsl

@@ -0,0 +1,13 @@
+@vertex
+fn vs_main(@builtin(vertex_index) in_vertex_index: u32) -> @builtin(position) vec4<f32> {
+    return vec4<f32>(0.0);
+}
+
+@fragment
+fn fs_main() -> @location(0) vec4<f32> {
+    return vec4<f32>(0.0);
+}
+
+@compute
+@workgroup_size(1)
+fn cs_main() {}

wgpu-precompile-macro/src/lib.rs

@@ -100,6 +100,9 @@ impl Parse for MacroArgs {
             } else {
                 relative_path
             };
+            if !path_to_read.is_file() {
+                panic!("Path does not exist or is not a file: {path_to_read:?}")
+            }
             let bytes = std::fs::read(path_to_read).expect("Failed to read input file");
             (ShaderSource::File(bytes), Some(file_name))
         } else {