fix test

Author: atlv24

tests/tests/wgpu-gpu/shader_barycentric/barycentric.wgsl

@@ -5,5 +5,5 @@ fn vs_main(@location(0) xy: vec2<f32>) -> @builtin(position) vec4<f32> {
 
 @fragment
 fn fs_main(@builtin(barycentric) bary: vec3<f32>) -> @location(0) vec4<f32> {
-    return vec4<f32>(bary, 1.0);
+    return vec4<f32>(bary * 1.1 - 0.05, 1.0);
 }

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

@@ -2,7 +2,7 @@ use wgpu::util::DeviceExt;
 use wgpu_test::{gpu_test, GpuTestConfiguration, TestParameters, TestingContext};
 
 pub fn all_tests(vec: &mut Vec<wgpu_test::GpuTestInitializer>) {
-    vec.push(DRAW);
+    vec.push(BARYCENTRIC);
 }
 
 //
@@ -26,36 +26,26 @@ pub fn all_tests(vec: &mut Vec<wgpu_test::GpuTestInitializer>) {
 //
 // The fragment shader outputs color based on builtin(barycentric):
 //
-//     return vec4<f32>(bary, 1.0);
+//     return vec4<f32>(bary * 1.1 - 0.05, 1.0);
 //
 
 #[gpu_test]
-static DRAW: GpuTestConfiguration = GpuTestConfiguration::new()
+static BARYCENTRIC: GpuTestConfiguration = GpuTestConfiguration::new()
     .parameters(
         TestParameters::default()
             .test_features_limits()
             .features(wgpu::Features::SHADER_BARYCENTRICS),
     )
-    .run_async(|ctx| async move {
-        //
-        //   +-----+-----+
-        //   |blue |white|
-        //   +-----+-----+
-        //   | red |green|
-        //   +-----+-----+
-        //
-        let expected = [
-            0, 0, 255, 255, 255, 255, 255, 255, 255, 0, 0, 255, 0, 255, 0, 255,
-        ];
-        draw(ctx, &expected).await;
-    });
+    .run_async(barycentric);
 
-async fn draw(ctx: TestingContext, expected: &[u8]) {
+async fn barycentric(ctx: TestingContext) {
     let shader = ctx
         .device
         .create_shader_module(wgpu::include_wgsl!("barycentric.wgsl"));
 
-    let two_triangles_xy: [f32; 6] = [-0.5, -0.5, 0.5, -0.5, -0.5, 0.5];
+    let n = -0.505;
+    let p = 0.51;
+    let two_triangles_xy: [f32; 6] = [n, n, p, n, n, p];
     let vertex_buffer = ctx
         .device
         .create_buffer_init(&wgpu::util::BufferInitDescriptor {
@@ -157,5 +147,18 @@ async fn draw(ctx: TestingContext, expected: &[u8]) {
     }
     readback_buffer.copy_from(&ctx.device, &mut encoder, &color_texture);
     ctx.queue.submit(Some(encoder.finish()));
-    readback_buffer.assert_buffer_contents(&ctx, expected).await;
+
+    //
+    //   +-----+-----+
+    //   |blue |white|
+    //   +-----+-----+
+    //   | red |green|
+    //   +-----+-----+
+    //
+    let expected = [
+        0, 0, 255, 255, 255, 255, 255, 255, 255, 0, 0, 255, 0, 255, 0, 255,
+    ];
+    readback_buffer
+        .assert_buffer_contents(&ctx, &expected)
+        .await;
 }