redefined include files of Color,half float

inc/hgl/math/HalfFloat.h

@@ -0,0 +1,50 @@
+#ifndef HGL_HALF_FLOAT_INCLUDE
+#define HGL_HALF_FLOAT_INCLUDE
+
+#include<hgl/platform/Platform.h>
+
+namespace hgl
+{
+    using half_float=uint16;
+
+    inline const half_float float2half(const float &f)
+    {
+        const uint32 x = *((uint32 *)&f);
+
+        return ((x>>16)&0x8000)|((((x&0x7f800000)-0x38000000)>>13)&0x7c00)|((x>>13)&0x03ff);
+    }
+    
+    inline const float half2float(const half_float &hf)
+    {
+        union
+        {
+            float f;
+            uint32 u;
+        }x;
+
+        x.u=(((hf&0x8000)<<16) | (((hf&0x7c00)+0x1C000)<<13) | ((hf&0x03FF)<<13));
+
+        return x.f;
+    }
+
+    inline void half_to_float(uint32 *target,const half_float *source,uint32 count)
+    {
+        while (count--)
+        {
+            *target = (((*source & 0x8000) << 16) | (((*source & 0x7c00) + 0x1C000) << 13) | ((*source & 0x03FF) << 13));
+            ++target;
+            ++source;
+        }
+    }
+
+    inline void float_to_half(half_float *target,const float *source,uint32 count)
+    {
+        while (count--)
+        {
+            *target = float2half(*source);
+            ++target;
+            ++source;
+        }
+    }   
+}//namespace hgl
+#endif//HGL_HALF_FLOAT_INCLUDE