Set supportsRasterOrdering in the webgpu backend

Diffs=
2a6cf9d0a6 Set supportsRasterOrdering in the webgpu backend (#8774)

Co-authored-by: Chris Dalton <99840794+csmartdalton@users.noreply.github.com>

.rive_head

@@ -1 +1 @@
-f19a9c9399997a1e1b4571fe860faf2ed60b7d49
+2a6cf9d0a60f53d8d8f0c6e2d2d837f441780902

renderer/make_dawn.sh

@@ -8,16 +8,14 @@ cd dependencies
 if [ ! -d dawn ]; then
 	echo "Cloning Dawn..."
     git clone https://dawn.googlesource.com/dawn
-    cd dawn
-    cp scripts/standalone.gclient .gclient
-    gclient sync
-    gn gen --args='is_debug=false dawn_complete_static_libs=true use_custom_libcxx=false dawn_use_swiftshader=false angle_enable_swiftshader=false' out/release
 else
     echo "Already have Dawn; updating it..."
-    cd dawn
-    git fetch origin
-    git checkout origin/main
-    gclient sync
+    git -C dawn fetch origin
 fi
 
+cd dawn
+git checkout origin/main
+cp scripts/standalone.gclient .gclient
+gclient sync
+gn gen --args='is_debug=false dawn_complete_static_libs=true use_custom_libcxx=true dawn_use_swiftshader=false angle_enable_swiftshader=false' out/release
 ninja -C out/release -j20 webgpu_dawn_static cpp proc_static

renderer/src/webgpu/render_context_webgpu_impl.cpp

@@ -823,6 +823,9 @@ RenderContextWebGPUImpl::RenderContextWebGPUImpl(
         std::make_unique<TessellatePipeline>(m_device, m_contextOptions))
 {
     m_platformFeatures = baselinePlatformFeatures;
+    // All backends currently use raster ordered shaders.
+    // TODO: update this flag once we have msaa and atomic modes.
+    m_platformFeatures.supportsRasterOrdering = true;
     m_platformFeatures.invertOffscreenY = true;
 
     if (m_contextOptions.plsType ==

renderer/src/webgpu/render_context_webgpu_vulkan.hpp

@@ -52,6 +52,7 @@ class RenderContextWebGPUVulkan : public RenderContextWebGPUImpl
                                 baselinePlatformFeatures)
     {
         assert(contextOptions.plsType == PixelLocalStorageType::subpassLoad);
+        m_platformFeatures.supportsRasterOrdering = true;
     }
 
     EmJsHandle m_plsTextureBindGroupJSHandle;