Mac M2 benchmarks (#175)

Added Mac M2 benchmarks. Limit to 4 threads (performance cores). Adding
efficiency cores slows performance.

benchmark/m2air/joint_grid.csv

@@ -0,0 +1,5 @@
+threads,fps
+1,510.67
+2,955.752
+3,1384.14
+4,1651.69

benchmark/m2air/large_pyramid.csv

@@ -0,0 +1,5 @@
+threads,fps
+1,284.342
+2,526.955
+3,728.772
+4,911.715

benchmark/m2air/many_pyramids.csv

@@ -0,0 +1,5 @@
+threads,fps
+1,73.9053
+2,139.551
+3,193.414
+4,234.215

benchmark/m2air/smash.csv

@@ -0,0 +1,5 @@
+threads,fps
+1,161.17
+2,256.422
+3,321.137
+4,385.797

benchmark/m2air/tumbler.csv

@@ -0,0 +1,5 @@
+threads,fps
+1,340.404
+2,538.587
+3,661.721
+4,781.784

benchmark/main.c

@@ -11,12 +11,12 @@
 #include <assert.h>
 #include <stdbool.h>
 #include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 
 #if defined(_WIN64)
 	#include <windows.h>
 #elif defined(__APPLE__)
-	// #include <sys/param.h>
-	// #include <sys/sysctl.h>
 	#include <unistd.h>
 #elif defined(__linux__)
 	#include <unistd.h>
@@ -60,27 +60,9 @@ int GetNumberOfCores()
 	GetSystemInfo(&sysinfo);
 	return sysinfo.dwNumberOfProcessors;
 #elif defined(__APPLE__)
-	// int nm[2];
-	// size_t len = 4;
-	// uint32_t count;
-
-	// nm[0] = CTL_HW;
-	// nm[1] = HW_AVAILCPU;
-	// sysctl(nm, 2, &count, &len, NULL, 0);
-
-	// if (count < 1)
-	//{
-	//	nm[1] = HW_NCPU;
-	//	sysctl(nm, 2, &count, &len, NULL, 0);
-	//	if (count < 1)
-	//	{
-	//		count = 1;
-	//	}
-	// }
-	// return count;
-	return sysconf(_SC_NPROCESSORS_ONLN);
+	return (int)sysconf(_SC_NPROCESSORS_ONLN);
 #elif defined(__linux__)
-	return sysconf(_SC_NPROCESSORS_ONLN);
+	(int)return sysconf(_SC_NPROCESSORS_ONLN);
 #else
 	return 1;
 #endif

samples/sample_shapes.cpp

@@ -715,8 +715,8 @@ class CustomFilter : public Sample
 			return true;
 		}
 
-		int indexA = reinterpret_cast<intptr_t>(userDataA);
-		int indexB = reinterpret_cast<intptr_t>(userDataB);
+		int indexA = static_cast<int>(reinterpret_cast<intptr_t>(userDataA));
+		int indexB = static_cast<int>(reinterpret_cast<intptr_t>(userDataB));
 
 		return ((indexA & 1) + (indexB & 1)) != 1;
 	}