Cycles: Add some utility functions and structures

Most of them are not currently used but are essential for the further work.

- CPU kernels with SSE2 support will now have sse3b, sse3f and sse3i

- Added templatedversions of min4, max4 which are handy to use with register
  variables.

- Added util_swap function which gets arguments by pointers.
  So hopefully it'll be a portable version of std::swap.

1 files changed, 13 insertions, 0 deletions

diff --git a/intern/cycles/util/util_types.h b/intern/cycles/util/util_types.h
index ce84200d0b6..8c0f6d180b0 100644
--- a/intern/cycles/util/util_types.h
+++ b/intern/cycles/util/util_types.h
@@ -264,6 +264,19 @@ struct ccl_try_align(16) float4 {
 	__forceinline float& operator[](int i) { return *(&x + i); }
 };
 
+template<typename T>
+class vector3
+{
+public:
+	T x, y, z;
+
+	ccl_always_inline vector3() {}
+	ccl_always_inline vector3(const T& a)
+	  : x(a), y(a), z(a) {}
+	ccl_always_inline vector3(const T& x, const T& y, const T& z)
+	  : x(x), y(y), z(z) {}
+};
+
 #endif
 
 #ifndef __KERNEL_GPU__