rendering: stabilize single-map directional shadow fitting

engine/include/XCEngine/Rendering/Planning/SceneRenderRequestPlanner.h

@@ -16,9 +16,11 @@ namespace Rendering {
 // fitting and the default sampling / caster bias values emitted into the
 // runtime shadow contract.
 struct DirectionalShadowPlanningSettings {
-    uint32_t mapDimension = 1024u;
+    // Keep the single-map MainLight shadow at a higher baseline so the current
+    // non-cascaded implementation has enough texel density to be usable.
+    uint32_t mapDimension = 2048u;
     float minFocusDistance = 5.0f;
-    float maxFocusDistance = 64.0f;
+    float maxFocusDistance = 32.0f;
     float perspectiveFocusFactor = 1.0f;
     float orthographicFocusFactor = 2.0f;
     float minDepthRange = 20.0f;

engine/src/Rendering/Planning/Internal/DirectionalShadowPlanning.cpp

@@ -286,7 +286,7 @@ DirectionalShadowRenderPlan BuildDirectionalShadowRenderPlan(
             gameObject->GetComponent<Components::MeshRendererComponent>();
         if (meshRenderer == nullptr ||
             !meshRenderer->IsEnabled() ||
-            (!meshRenderer->GetCastShadows() && !meshRenderer->GetReceiveShadows())) {
+            !meshRenderer->GetCastShadows()) {
             continue;
         }