33 Commits

Author	SHA1	Message	Date
Sean Barrett	6ef563d089	rename to stb_image_resize.h	2014-08-18 09:12:59 -07:00
Sean Barrett	eb0781fda0	add comments describing the purpose of the s,t-rectangle tests	2014-08-18 09:01:33 -07:00
Sean Barrett	9ba3dc1fc5	make resample tests work in VC6	2014-08-18 08:56:44 -07:00
Jorge Rodriguez	1353909477	Allow user to force the alpha channel to be handled as a linear value even if the color channels are sRGB.	2014-08-12 13:37:06 -07:00
Jorge Rodriguez	bbc340d481	Support different edge behavior on vertical and horizontal axis.	2014-08-12 12:22:38 -07:00
Jorge Rodriguez	6ae729d61a	Four new tests of subpixel stuff.	2014-08-12 12:15:12 -07:00
Jorge Rodriguez	45fa6ec900	Update test cases for premul channel -1 meaning don't do any premul handling, fix another no-more-advanced.	2014-08-11 12:38:27 -07:00
Jorge Rodriguez	e75ed1d381	Update test cases for no more advanced API.	2014-08-11 12:21:55 -07:00
Jorge Rodriguez	d75488b0e8	Do the multiply inline, it should be a tad faster and not corrupt our data.	2014-07-31 19:00:48 -07:00
Jorge Rodriguez	13acfca829	I had the whole premultiply thing backwards.	2014-07-31 18:46:00 -07:00
Jorge Rodriguez	21c7c8f5d9	Another stab at the api, offering classes of functions for different common tasks.	2014-07-31 18:04:57 -07:00
Jorge Rodriguez	8063ea0952	Specify a channel as having premultiplied alpha and use it to un-premultiply all other channels before resampling.	2014-07-31 17:20:00 -07:00
Jorge Rodriguez	daf325dc03	Sub pixel source area test cases. No problems.	2014-07-31 16:31:45 -07:00
Jorge Rodriguez	aae1c7ca41	ZOOM AND ENHANCE!	2014-07-31 15:16:36 -07:00
Jorge Rodriguez	35cb95b803	Allow for specifying a sub-region of the source image to use. Downsampling only, currently.	2014-07-31 00:39:33 -07:00
Jorge Rodriguez	fdc979e48b	Some minor ports for Linux. No idea how it worked at all in Windows with STB_RESIZE_IMPLEMENTATION instead of STB_RESAMPLE_IMPLEMENTATION.	2014-07-30 17:30:25 -07:00
Jorge Rodriguez	c5de2f3298	Test channels.	2014-07-30 09:42:12 -07:00
Jorge Rodriguez	985ac75251	When doing a perfect po2 nearest neighbor downsample don't allow -0.5 and 0.5 to both contribute to a texel or you'll get a double tap.	2014-07-30 09:27:42 -07:00
Jorge Rodriguez	c2449acc3e	Tests for edge behavior	2014-07-30 09:14:38 -07:00
Jorge Rodriguez	59cb71ea18	Fix float conversion.	2014-07-30 08:47:55 -07:00
Jorge Rodriguez	6625259959	Try to keep integer precision by briefly casting to double while decoding and encoding.	2014-07-30 01:18:23 -07:00
Jorge Rodriguez	11897fbf96	More fixing shorts.	2014-07-30 00:34:25 -07:00
Jorge Rodriguez	1fcbe0daaf	Fix shorts. Add test cases for shorts.	2014-07-30 00:16:13 -07:00
Jorge Rodriguez	7ead9a748d	Fix. Ring buffers are a height value.	2014-07-29 23:09:41 -07:00
Jorge Rodriguez	043fa28c11	Same deal with height.	2014-07-29 23:02:56 -07:00
Jorge Rodriguez	ebe0473d8b	Add a test suite to do a bunch of different resizes to find problems. One problem found was an incorrect calculation of texel support how many margin texels needed when downsampling. When downsampling we need to spread out the support of each contributing texel, so to compensate you need more margin texels.	2014-07-29 22:50:06 -07:00
Jorge Rodriguez	68f93b72d5	Update documentation and add helper functions.	2014-07-29 20:18:28 -07:00
Jorge Rodriguez	5b40906271	My perf testing code.	2014-07-29 17:44:45 -07:00
Jorge Rodriguez	6c8cac0a66	Support for sRGB color space.	2014-07-26 23:44:45 -07:00
Jorge Rodriguez	01fb58d6b4	Add a bicubic filter.	2014-07-26 13:07:04 -07:00
Jorge Rodriguez	7abd4ccf34	Support for filters with larger support. Initial support for edge behavior.	2014-07-26 11:51:02 -07:00
Jorge Rodriguez	297266b27b	Starting to implement downsampling.	2014-07-24 19:10:45 -07:00
Jorge Rodriguez	55c5f0b3a0	Beginning of a more sophisticated resample algorithm, starting with calculating filter contributions per scan line.	2014-07-23 22:17:56 -07:00