Add directional shadow request planning

engine/include/XCEngine/Rendering/CameraRenderRequest.h

@@ -38,6 +38,26 @@ struct ScenePassRenderRequest {
 using DepthOnlyRenderRequest = ScenePassRenderRequest;
 using ShadowCasterRenderRequest = ScenePassRenderRequest;
 
+struct DirectionalShadowRenderPlan {
+    bool enabled = false;
+    Math::Vector3 lightDirection = Math::Vector3::Back();
+    Math::Vector3 focusPoint = Math::Vector3::Zero();
+    float orthographicHalfExtent = 0.0f;
+    float nearClipPlane = 0.1f;
+    float farClipPlane = 0.0f;
+    uint32_t mapWidth = 0;
+    uint32_t mapHeight = 0;
+    RenderCameraData cameraData = {};
+
+    bool IsValid() const {
+        return enabled &&
+               mapWidth > 0 &&
+               mapHeight > 0 &&
+               cameraData.viewportWidth == mapWidth &&
+               cameraData.viewportHeight == mapHeight;
+    }
+};
+
 struct ObjectIdRenderRequest {
     RenderSurface surface;
 
@@ -62,6 +82,7 @@ struct CameraRenderRequest {
     RenderSurface surface;
     DepthOnlyRenderRequest depthOnly;
     ShadowCasterRenderRequest shadowCaster;
+    DirectionalShadowRenderPlan directionalShadow;
     ObjectIdRenderRequest objectId;
     float cameraDepth = 0.0f;
     uint8_t cameraStackOrder = 0;

engine/include/XCEngine/Rendering/RenderSceneExtractor.h

@@ -18,6 +18,7 @@ namespace Rendering {
 
 struct RenderDirectionalLightData {
     bool enabled = false;
+    bool castsShadows = false;
     Math::Vector3 direction = Math::Vector3::Back();
     float intensity = 1.0f;
     Math::Color color = Math::Color::White();