Re-sync with internal repository (#348)

The internal and external repositories are out of sync. This Pull Request attempts to brings them back in sync by patching the GitHub repository. Please carefully review this patch. You must disable ShipIt for your project in order to merge this pull request. DO NOT IMPORT this pull request. Instead, merge it directly on GitHub using the MERGE BUTTON. Re-enable ShipIt after merging.

fbshipit-source-id: bf1f503a673282d805f454227e7c60a917fee9dc

Co-authored-by: Facebook GitHub Bot <facebook-github-bot@users.noreply.github.com>

Author: meta-codesync[bot]

shell/renderSessions/StencilOutlineSession.h

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+// @fb-only
+
+#pragma once
+
+#include <IGLU/simdtypes/SimdTypes.h>
+#include <shell/shared/platform/Platform.h>
+#include <shell/shared/renderSession/RenderSession.h>
+#include <igl/IGL.h>
+
+namespace igl::shell {
+
+class StencilOutlineSession : public RenderSession {
+ public:
+  explicit StencilOutlineSession(std::shared_ptr<Platform> platform) :
+    RenderSession(std::move(platform)) {}
+  void initialize() noexcept override;
+  void update(SurfaceTextures surfaceTextures) noexcept override;
+
+ private:
+  std::shared_ptr<IFramebuffer> framebuffer_;
+  std::shared_ptr<IRenderPipelineState> pipelineState_;
+  std::shared_ptr<IRenderPipelineState> outlinePipelineState_;
+  std::shared_ptr<IDepthStencilState> depthStencilStateWrite_;
+  std::shared_ptr<IDepthStencilState> depthStencilStateOutline_;
+  std::shared_ptr<IBuffer> vertexBuffer_;
+  std::shared_ptr<IBuffer> indexBuffer_;
+  std::shared_ptr<IVertexInputState> vertexInputState_;
+  std::shared_ptr<IShaderStages> shaderStages_;
+  std::shared_ptr<IShaderStages> outlineShaderStages_;
+  RenderPassDesc renderPass_;
+};
+
+} // namespace igl::shell