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Switch to bitwise ops to po2ify

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This commit is contained in:
Bart van Strien
2011-05-15 22:10:17 +02:00
parent 1a340cd6a0
commit af809ab210
1 changed files with 14 additions and 2 deletions
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src/modules/image/devil/ImageData.cpp
+14 -2
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@@ -27,6 +27,18 @@
#include <common/Exception.h>
#include <filesystem/File.h>
int toPo2(int n)
{
n -= 1;
n |= n >> 1;
n |= n >> 2;
n |= n >> 4;
n |= n >> 8;
n |= n >> 16;
n |= n >> 32;
return n+1;
}
namespace love
{
namespace image
@@ -42,8 +54,8 @@ namespace devil
ilBindImage(image);
//scale to nearest bigger po2
width = pow(2, ceil(log((double) width)/log(2.0)));
height = pow(2, ceil(log((double) height)/log(2.0)));
width = toPo2(width);
height = toPo2(height);
//create and populate the image
bool success = (ilTexImage(width, height, 1, bpp, IL_RGBA, IL_UNSIGNED_BYTE, data) == IL_TRUE);