com php-src: - update the comment to match the code/features: ext/gd/libgd/gd_interpolation.c

Commit: f0078897c7a76bf9332fb1c19aeb51a9e28bab9f Author: Pierre Joye <pierre.php@gmail.com> Wed, 20 Mar 2013 12:29:47 +0100 Parents: 1ec484d3c536e85bc536e809a403ce5e7d7849d8 Branches: master Link: http://git.php.net/?p=php-src.git;a=commitdiff;h=f0078897c7a76bf9332fb1c19aeb51a9e28bab9f Log: - update the comment to match the code/features Changed paths: M ext/gd/libgd/gd_interpolation.c Diff: diff --git a/ext/gd/libgd/gd_interpolation.c b/ext/gd/libgd/gd_interpolation.c index ab3e988..5ad5de6 100644 --- a/ext/gd/libgd/gd_interpolation.c +++ b/ext/gd/libgd/gd_interpolation.c @@ -1,4 +1,5 @@ /* + * The two pass scaling function is based on: * Filtered Image Rescaling * Based on Gems III * - Schumacher general filtered image rescaling @@ -13,6 +14,7 @@ * * Initial sources code is avaibable in the Gems Source Code Packages: * http://www.acm.org/pubs/tog/GraphicsGems/GGemsIII.tar.gz + * */ /* @@ -35,6 +37,17 @@ */ /* + Additional functions are available for simple rotation or up/downscaling. + downscaling using the fixed point implementations are usually much faster + than the existing gdImageCopyResampled while having a similar or better + quality. + + For image rotations, the optimized versions have a lazy antialiasing for + the edges of the images. For a much better antialiased result, the affine + function is recommended. +*/ + +/* TODO: - Optimize pixel accesses and loops once we have continuous buffer - Add scale support for a portion only of an image (equivalent of copyresized/resampled)