Re: d3dx9 [patch 1/3]: Avoid two useless computations

[Rico Schüller]

On 05.04.2013 09:13, Nozomi Kodama wrote:
      s = 0.75f;
-    if ( order > 2 )
-        s += 5.0f / 16.0f;
-    if ( order > 4 )
-        s -= 3.0f / 32.0f;
+    if (order > 2)
+        s = 1.0625f;
+    if (order > 4)
+        s = 0.96875f;
      s /= D3DX_PI;

Doesn't the compiler do that already? If not something like this would 
probably better:

s = 0.23873...f; /* 0.75f / D3DX_PI */
if (order > 2)
        s = 1.0625f / D3DX_PI;
if (order > 4)
        s = 0.96875f / D3DX_PI;

Cheers
Rico