From e65d4860f3d012a5f16af5f2a24149dcf69c172e Mon Sep 17 00:00:00 2001
From: Christian Heinemann <heinemann.christian@gmail.com>
Date: Tue, 21 May 2024 23:19:36 +0200
Subject: [PATCH] Revert "better solution for GCC compile error"

This reverts commit a1546a5c724695fa1077263f7515fa5b6c398028.
---
 source/EngineGpuKernels/Base.cuh       | 8 +++-----
 source/EngineGpuKernels/DensityMap.cuh | 6 +++---
 2 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/source/EngineGpuKernels/Base.cuh b/source/EngineGpuKernels/Base.cuh
index 19ddda940..b43b4e08e 100644
--- a/source/EngineGpuKernels/Base.cuh
+++ b/source/EngineGpuKernels/Base.cuh
@@ -122,13 +122,11 @@ __device__ __inline__ T alienAtomicRead(T* const& address)
 //
 // Due to this, we need an ugly type casting workaround here
 //
-template <typename S, typename T, typename U = S>
-__device__ __inline__ U alienAtomicAdd64(S* address, T const& value)
+template <typename T>
+__device__ __inline__ T alienAtomicAdd64(T* address, T const& value)
 {
     static_assert(sizeof(unsigned long long) == sizeof(T));
-    static_assert(sizeof(unsigned long long) == sizeof(S));
-    static_assert(sizeof(unsigned long long) == sizeof(U));
-    return reinterpret_cast<U>(atomicAdd(reinterpret_cast<unsigned long long*>(address), static_cast<unsigned long long>(value)));
+    return atomicAdd(reinterpret_cast<unsigned long long*>(address), static_cast<unsigned long long>(value));
 }
 
 template <typename T>
diff --git a/source/EngineGpuKernels/DensityMap.cuh b/source/EngineGpuKernels/DensityMap.cuh
index c99c5f3f7..b56b0f73d 100644
--- a/source/EngineGpuKernels/DensityMap.cuh
+++ b/source/EngineGpuKernels/DensityMap.cuh
@@ -64,13 +64,13 @@ public:
         auto index = toInt(cell->pos.x) / _slotSize + toInt(cell->pos.y) / _slotSize * _densityMapSize.x;
         if (index >= 0 && index < _densityMapSize.x * _densityMapSize.y) {
             auto color = calcMod(cell->color, MAX_COLORS);
-            alienAtomicAdd64(&_colorDensityMap[index], (1ull << (color * 8)) | (1ull << 56));
+            alienAtomicAdd64(&_colorDensityMap[index], static_cast<uint64_t>((1ull << (color * 8)) | (1ull << 56)));
 
             if (cell->mutationId != 0) {
                 uint64_t bucket = calcBucket(cell->mutationId, timestep);
-                alienAtomicAdd64(&_otherMutantDensityMap[index], 0x0101010101010101ull ^ (1ull << (bucket * 8)));
+                alienAtomicAdd64(&_otherMutantDensityMap[index], static_cast<uint64_t>(0x0101010101010101ull ^ (1ull << (bucket * 8))));
             } else {
-                alienAtomicAdd64(&_otherMutantDensityMap[index], 1ull);
+                alienAtomicAdd64(&_otherMutantDensityMap[index], static_cast<uint64_t>(1ull));
             }
         }
     }