Jitify2: pin the commit to the HEAD of the jitify2 branch on 2025-08-04 + a fix

Author: ptheywood

cmake/dependencies/Jitify.cmake

@@ -14,7 +14,7 @@ endif()
 FetchContent_Declare(
     jitify
     GIT_REPOSITORY https://github.com/NVIDIA/jitify.git
-    GIT_TAG        jitify2-preprocessing-overhaul
+    GIT_TAG        7d8fbc8dc5aa0609a84edaa860456a88f660cdd6  # jitify2 branch on 2025-08-04
     SOURCE_DIR     ${FETCHCONTENT_BASE_DIR}/jitify-src/jitify
     GIT_PROGRESS   ON
     # UPDATE_DISCONNECTED   ON

src/flamegpu/simulation/CUDASimulation.cu

@@ -755,7 +755,7 @@ void CUDASimulation::stepLayer(const std::shared_ptr<LayerData>& layer, const un
                     // get instantiation
                     const jitify2::KernelData& instance = cuda_agent.getRTCInstantiation(func_condition_identifier);
                     // calculate the grid block size for main agent function
-                    CUfunction cu_func = instance.function();
+                    CUfunction cu_func = (CUfunction)instance.function();
                     cuOccupancyMaxPotentialBlockSize(&minGridSize, &blockSize, cu_func, 0, 0, state_list_size);
                     //! Round up according to CUDAAgent state list size
                     gridSize = (state_list_size + blockSize - 1) / blockSize;