fix for not using OMM.

Author: gpx1000

attachments/simple_engine/renderer.h

@@ -555,6 +555,7 @@ class Renderer {
     // This method polls rawPixelCache.size() until it is stable, confirming that
     // upload worker threads have finished their StoreRawTexturePixels calls.
     // Returns false on timeout.
+#ifdef ENABLE_COURSE_OPACITY_MICROMAPS
     bool WaitForRawPixelCacheToSettle(float timeoutSeconds = 60.f) const {
       const auto deadline = std::chrono::steady_clock::now()
           + std::chrono::duration_cast<std::chrono::steady_clock::duration>(
@@ -580,6 +581,7 @@ class Renderer {
         std::this_thread::sleep_for(std::chrono::milliseconds(50));
       }
     }
+#endif // ENABLE_COURSE_OPACITY_MICROMAPS
 
     // Process pending texture GPU uploads on the calling thread.
     // This should be invoked from the main/render thread so that all

attachments/simple_engine/renderer_core.cpp

@@ -1124,7 +1124,9 @@ bool Renderer::createLogicalDevice(bool enableValidationLayers) {
       opacityMicromapSupported = featChain2.template get<vk::PhysicalDeviceOpacityMicromapFeaturesKHR>();
       if (opacityMicromapSupported.micromap) {
         opacityMicromapEnable.micromap = vk::True;
+#ifdef ENABLE_COURSE_OPACITY_MICROMAPS
         opacityMicromapEnabled = true;
+#endif
         *tailNext = &opacityMicromapEnable;
         tailNext = reinterpret_cast<void **>(&opacityMicromapEnable.pNext);
       }