Fix a few entry_point parameters

Author: nical

tests/tests/regression/issue_4485.rs

@@ -45,7 +45,7 @@ async fn test_impl(ctx: &TestingContext) {
             layout: None,
             vertex: wgpu::VertexState {
                 module: &shader,
-                entry_point: "vs_main",
+                entry_point: Some("vs_main"),
                 compilation_options: Default::default(),
                 buffers: &[],
             },
@@ -54,7 +54,7 @@ async fn test_impl(ctx: &TestingContext) {
             multisample: wgpu::MultisampleState::default(),
             fragment: Some(wgpu::FragmentState {
                 module: &shader,
-                entry_point: "fs_main",
+                entry_point: Some("fs_main"),
                 compilation_options: Default::default(),
                 targets: &[Some(wgpu::ColorTargetState {
                     format: wgpu::TextureFormat::Rgba8Unorm,

tests/tests/regression/issue_4514.rs

@@ -45,7 +45,7 @@ async fn test_impl(ctx: &TestingContext) {
             layout: None,
             vertex: wgpu::VertexState {
                 module: &shader,
-                entry_point: "vs_main",
+                entry_point: Some("vs_main"),
                 compilation_options: Default::default(),
                 buffers: &[],
             },
@@ -54,7 +54,7 @@ async fn test_impl(ctx: &TestingContext) {
             multisample: wgpu::MultisampleState::default(),
             fragment: Some(wgpu::FragmentState {
                 module: &shader,
-                entry_point: "fs_main",
+                entry_point: Some("fs_main"),
                 compilation_options: Default::default(),
                 targets: &[Some(wgpu::ColorTargetState {
                     format: wgpu::TextureFormat::Rgba8Unorm,