diff options
Diffstat (limited to 'source/blender/imbuf/intern/dds/PixelFormat.h')
| -rw-r--r-- | source/blender/imbuf/intern/dds/PixelFormat.h | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/source/blender/imbuf/intern/dds/PixelFormat.h b/source/blender/imbuf/intern/dds/PixelFormat.h index c483c525570..35c6eacb972 100644 --- a/source/blender/imbuf/intern/dds/PixelFormat.h +++ b/source/blender/imbuf/intern/dds/PixelFormat.h @@ -17,7 +17,7 @@ * along with this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * - * Contributors: Amorilia (amorilia@gamebox.net) + * Contributors: Amorilia (amorilia@users.sourceforge.net) * * ***** END GPL LICENSE BLOCK ***** */ @@ -107,6 +107,38 @@ } } + inline float quantizeCeil(float f, int inbits, int outbits) + { + //uint i = f * (float(1 << inbits) - 1); + //i = convert(i, inbits, outbits); + //float result = float(i) / (float(1 << outbits) - 1); + //nvCheck(result >= f); + float result; + int offset = 0; + do { + uint i = offset + uint(f * (float(1 << inbits) - 1)); + i = convert(i, inbits, outbits); + result = float(i) / (float(1 << outbits) - 1); + offset++; + } while (result < f); + + return result; + } + + /* + inline float quantizeRound(float f, int bits) + { + float scale = float(1 << bits); + return fround(f * scale) / scale; + } + + inline float quantizeFloor(float f, int bits) + { + float scale = float(1 << bits); + return floor(f * scale) / scale; + } + */ + } // PixelFormat namespace #endif // _DDS_IMAGE_PIXELFORMAT_H |