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author | 2013-01-18 20:48:20 +0000 | |
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committer | 2013-01-18 20:48:20 +0000 | |
commit | 3f2d45aff69260fcf39d4eea8586387ed44402bb (patch) | |
tree | 41bb7d9415bca4ffc6279cc91caedb36b0356790 /samplecode/SampleText.cpp | |
parent | 80d447893e9141e986702842ed6a5603670eb837 (diff) |
(Relanding r7275 with assert fix, plus fixes from r7276, r7280, r7283.)
Implement a bicubic resampling image filter, with raster and GPU backends.
In order to get this to work on the GPU side, I had to modify the width and height of the drawn texture in drawSprite() and drawDevice() to use the filtered texture's dimensions, instead of the source texture. (This wasn't a problem before since all other image filters produce results the same dimensions as their input texture.)
For now, this implementation only does axis-aligned scaling (same as the Lanczos-3 implementation in Chrome). It's also done for correctness and clarity, not speed, so there are lots of opportunities for speedups.
Committed: https://code.google.com/p/skia/source/detail?r=7275
Review URL: https://codereview.appspot.com/7033049
git-svn-id: http://skia.googlecode.com/svn/trunk@7287 2bbb7eff-a529-9590-31e7-b0007b416f81
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