feat: add camera render clear color override

editor/src/Viewport/ViewportHostService.h

@@ -642,7 +642,6 @@ private:
         const Components::Scene* scene,
         const Rendering::RenderContext& renderContext,
         Rendering::RenderSurface& surface) {
-        surface.SetClearColorOverride(Math::Color(0.27f, 0.27f, 0.27f, 1.0f));
         if (!EnsureSceneViewCamera()) {
             ApplyViewportRenderFailure(
                 entry,
@@ -681,6 +680,8 @@ private:
             entry.renderTargets,
             &sceneState.postPasses,
             requests[0]);
+        requests[0].hasClearColorOverride = true;
+        requests[0].clearColorOverride = Math::Color(0.27f, 0.27f, 0.27f, 1.0f);
 
         if (!m_sceneRenderer->Render(requests)) {
             ApplyViewportRenderFailure(

engine/include/XCEngine/Rendering/CameraRenderRequest.h

@@ -39,6 +39,8 @@ struct CameraRenderRequest {
     float cameraDepth = 0.0f;
     uint8_t cameraStackOrder = 0;
     RenderClearFlags clearFlags = RenderClearFlags::All;
+    bool hasClearColorOverride = false;
+    Math::Color clearColorOverride = Math::Color::Black();
     RenderPassSequence* preScenePasses = nullptr;
     RenderPassSequence* postScenePasses = nullptr;
 

engine/src/Rendering/CameraRenderer.cpp

@@ -146,6 +146,9 @@ bool CameraRenderer::Render(
     }
 
     sceneData.cameraData.clearFlags = request.clearFlags;
+    if (request.hasClearColorOverride) {
+        sceneData.cameraData.clearColor = request.clearColorOverride;
+    }
     const RenderPassContext passContext = {
         request.context,
         request.surface,

tests/Rendering/unit/test_camera_scene_renderer.cpp

@@ -33,8 +33,10 @@ struct MockPipelineState {
     CameraComponent* lastCamera = nullptr;
     size_t lastVisibleItemCount = 0;
     RenderClearFlags lastClearFlags = RenderClearFlags::All;
+    XCEngine::Math::Color lastClearColor = XCEngine::Math::Color::Black();
     std::vector<CameraComponent*> renderedCameras;
     std::vector<RenderClearFlags> renderedClearFlags;
+    std::vector<XCEngine::Math::Color> renderedClearColors;
     std::vector<std::string> eventLog;
 };
 
@@ -76,8 +78,10 @@ public:
         m_state->lastCameraViewportHeight = sceneData.cameraData.viewportHeight;
         m_state->lastVisibleItemCount = sceneData.visibleItems.size();
         m_state->lastClearFlags = sceneData.cameraData.clearFlags;
+        m_state->lastClearColor = sceneData.cameraData.clearColor;
         m_state->renderedCameras.push_back(sceneData.camera);
         m_state->renderedClearFlags.push_back(sceneData.cameraData.clearFlags);
+        m_state->renderedClearColors.push_back(sceneData.cameraData.clearColor);
         return m_state->renderResult;
     }
 
@@ -213,6 +217,37 @@ TEST(CameraRenderer_Test, UsesOverrideCameraAndSurfaceSizeWhenSubmittingScene) {
     EXPECT_NE(state->lastCamera, primaryCamera);
     EXPECT_EQ(state->lastVisibleItemCount, 0u);
     EXPECT_EQ(state->lastClearFlags, RenderClearFlags::None);
+    EXPECT_FLOAT_EQ(state->lastClearColor.r, overrideCamera->GetClearColor().r);
+    EXPECT_FLOAT_EQ(state->lastClearColor.g, overrideCamera->GetClearColor().g);
+    EXPECT_FLOAT_EQ(state->lastClearColor.b, overrideCamera->GetClearColor().b);
+    EXPECT_FLOAT_EQ(state->lastClearColor.a, overrideCamera->GetClearColor().a);
+}
+
+TEST(CameraRenderer_Test, AppliesRequestClearColorOverrideToSceneData) {
+    Scene scene("CameraRendererClearColorOverrideScene");
+
+    GameObject* cameraObject = scene.CreateGameObject("Camera");
+    auto* camera = cameraObject->AddComponent<CameraComponent>();
+    camera->SetPrimary(true);
+    camera->SetDepth(1.0f);
+    camera->SetClearColor(XCEngine::Math::Color(0.05f, 0.10f, 0.15f, 1.0f));
+
+    auto state = std::make_shared<MockPipelineState>();
+    CameraRenderer renderer(std::make_unique<MockPipeline>(state));
+
+    CameraRenderRequest request;
+    request.scene = &scene;
+    request.camera = camera;
+    request.context = CreateValidContext();
+    request.surface = RenderSurface(320, 200);
+    request.hasClearColorOverride = true;
+    request.clearColorOverride = XCEngine::Math::Color(0.27f, 0.27f, 0.27f, 1.0f);
+
+    ASSERT_TRUE(renderer.Render(request));
+    EXPECT_FLOAT_EQ(state->lastClearColor.r, 0.27f);
+    EXPECT_FLOAT_EQ(state->lastClearColor.g, 0.27f);
+    EXPECT_FLOAT_EQ(state->lastClearColor.b, 0.27f);
+    EXPECT_FLOAT_EQ(state->lastClearColor.a, 1.0f);
 }
 
 TEST(CameraRenderer_Test, ExecutesInjectedPreAndPostPassSequencesAroundPipelineRender) {