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Mono Color

• caf6d08f2b Merge branch 'master' of https://github.com/Skylark13/stb into working Sean Barrett 2014-08-16 13:50:16 -07:00
• b36f9908ce Merge branch 'master' of https://github.com/thedmd/stb into working Sean Barrett 2014-08-16 13:45:32 -07:00
• fc09a5d198 Don't saturate floats. Jorge Rodriguez 2014-08-12 14:15:05 -07:00
• c9caec1123 Refactoring to reduce duplicated code. Jorge Rodriguez 2014-08-12 13:50:17 -07:00
• 1353909477 Allow user to force the alpha channel to be handled as a linear value even if the color channels are sRGB. Jorge Rodriguez 2014-08-12 13:37:06 -07:00
• bbc340d481 Support different edge behavior on vertical and horizontal axis. Jorge Rodriguez 2014-08-12 12:22:38 -07:00
• 6ae729d61a Four new tests of subpixel stuff. Jorge Rodriguez 2014-08-12 12:15:12 -07:00
• 419a5ba10f Fix stbr__type_size for updated stbr_type Jorge Rodriguez 2014-08-12 11:55:27 -07:00
• 45fa6ec900 Update test cases for premul channel -1 meaning don't do any premul handling, fix another no-more-advanced. Jorge Rodriguez 2014-08-11 12:37:10 -07:00
• e75ed1d381 Update test cases for no more advanced API. Jorge Rodriguez 2014-08-11 12:21:55 -07:00
• 6ade66182c allow alpha channel to be channel #0 Sean Barrett 2014-08-11 02:34:50 -07:00
• f502cae91a rename everything to do with premultiplied alpha since the whole point is that this is for handling *non*-premultiplied alpha (since correct handling of premultiplied alpha requires doing nothing) Sean Barrett 2014-08-11 02:32:07 -07:00
• 42556fec82 don't require manual synchronization of STBR_MAX_COLORSPACES/MAX_TYPES Sean Barrett 2014-08-11 02:26:17 -07:00
• 392585130c Get rid of "advanced" API with explicit temp memory because the STBR_MALLOC interface is sufficient Sean Barrett 2014-08-11 02:23:39 -07:00
• 259c92b550 replace "texel" with "pixel" in identifiers Sean Barrett 2014-08-11 02:17:40 -07:00
• fc4ca11a52 Fix places in previous commits where tabs got replaced with spaces Sean Barrett 2014-08-11 02:16:23 -07:00
• 25fae8c67c Avoid divides in encode_scanline if not doing unpremultiply. Rename stb__encode_scanline to stb__encode_pixel Sean Barrett 2014-08-11 02:13:26 -07:00
• a0537bfd04 Allow compiling as C pre-C99 (don't rely on declare-anywhere) Sean Barrett 2014-08-11 01:56:47 -07:00
• 3077bf5023 wrap long data lines Sean Barrett 2014-08-11 01:50:16 -07:00
• 94ecd81abe Merge branch 'master' of http://github.com/BSVino/stb into resample Sean Barrett 2014-08-11 01:47:12 -07:00
• ebc2d23d47 realized the 2 colorbytes case is impossible. also updated the comment at the top of the file to reflect stbi_write_tga's new capabilities. Jean-S�bastien Guay 2014-08-09 09:16:57 -04:00
• 26a71f67fe comment was wrong way around... code was right. Jean-S�bastien Guay 2014-08-09 01:08:43 -04:00
• b8b364c301 stbi_write_tga can now write 1 and 2 channel (grayscale and grayscale-alpha) images. Jean-S�bastien Guay 2014-08-09 00:34:49 -04:00
• 10def9b150 fix MSVC-ARM internal compiler error by wrapping malloc Michał Cichoń 2014-08-08 00:46:45 +02:00
• aaea13b71c version numbers Sean Barrett 2014-08-07 04:46:29 -07:00
• c8a3522a5f version number Sean Barrett 2014-08-07 04:46:13 -07:00
• 29f59c0460 update version number Sean Barrett 2014-08-07 04:44:17 -07:00
• d26beed67d comments/ version update for platformID = Unicode Sean Barrett 2014-08-07 04:41:02 -07:00
• 0adfac0abe Merge branch 'master' of https://github.com/HouQiming/stb into working Sean Barrett 2014-08-07 04:35:51 -07:00
• 85c39da625 Merge branch 'rc/const' of https://github.com/ronnychevalier/stb into working Sean Barrett 2014-08-07 04:25:12 -07:00
• 2119c17ae9 stb_vorbis: fix unused variables Ronny Chevalier 2014-07-17 14:53:42 +02:00
• 260741ed33 vorbis warnings from ronny chevalier Sean Barrett 2014-08-07 04:20:58 -07:00
• 758c165d2c stb_vorbis: fix unused functions Ronny Chevalier 2014-07-17 14:49:48 +02:00
• b8b6e7c31a stb_image: fix unused parameter Ronny Chevalier 2014-07-17 14:44:11 +02:00
• 422e29017c stb_vorbis: fix signed/unsigned comparison Ronny Chevalier 2014-07-17 14:43:29 +02:00
• 893ef013b2 stb_image: fix undefined preprocessor definition Ronny Chevalier 2014-07-17 14:43:08 +02:00
• c28e92e856 stb_vorbis: use const char* when appropriate Ronny Chevalier 2014-08-03 23:43:54 +02:00
• e05ebdbf1e My guess is people who care about premultiply also care about color space. Jorge Rodriguez 2014-07-31 19:37:42 -07:00
• d75488b0e8 Do the multiply inline, it should be a tad faster and not corrupt our data. Jorge Rodriguez 2014-07-31 19:00:48 -07:00
• 13acfca829 I had the whole premultiply thing backwards. Jorge Rodriguez 2014-07-31 18:46:00 -07:00
• 21c7c8f5d9 Another stab at the api, offering classes of functions for different common tasks. Jorge Rodriguez 2014-07-31 18:04:57 -07:00
• 8063ea0952 Specify a channel as having premultiplied alpha and use it to un-premultiply all other channels before resampling. Jorge Rodriguez 2014-07-31 17:20:00 -07:00
• a32fa8b4df This to-do item done. Jorge Rodriguez 2014-07-31 16:36:09 -07:00
• daf325dc03 Sub pixel source area test cases. No problems. Jorge Rodriguez 2014-07-31 16:31:45 -07:00
• aae1c7ca41 ZOOM AND ENHANCE! Jorge Rodriguez 2014-07-31 15:16:36 -07:00
• 1b2d104e00 Some error conditions. Jorge Rodriguez 2014-07-31 00:52:03 -07:00
• 35cb95b803 Allow for specifying a sub-region of the source image to use. Downsampling only, currently. Jorge Rodriguez 2014-07-31 00:39:33 -07:00
• 52ac93225a C<99 ports Jorge Rodriguez 2014-07-30 17:33:47 -07:00
• fdc979e48b Some minor ports for Linux. No idea how it worked at all in Windows with STB_RESIZE_IMPLEMENTATION instead of STB_RESAMPLE_IMPLEMENTATION. Jorge Rodriguez 2014-07-30 17:30:25 -07:00
• c5de2f3298 Test channels. Jorge Rodriguez 2014-07-30 09:41:41 -07:00
• 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. Jorge Rodriguez 2014-07-30 09:27:42 -07:00
• c2449acc3e Tests for edge behavior Jorge Rodriguez 2014-07-30 09:14:38 -07:00
• 59cb71ea18 Fix float conversion. Jorge Rodriguez 2014-07-30 08:47:55 -07:00
• 6625259959 Try to keep integer precision by briefly casting to double while decoding and encoding. Jorge Rodriguez 2014-07-30 01:18:23 -07:00
• 11897fbf96 More fixing shorts. Jorge Rodriguez 2014-07-30 00:34:25 -07:00
• 1fcbe0daaf Fix shorts. Add test cases for shorts. Jorge Rodriguez 2014-07-30 00:16:13 -07:00
• 7ead9a748d Fix. Ring buffers are a height value. Jorge Rodriguez 2014-07-29 23:09:41 -07:00
• 043fa28c11 Same deal with height. Jorge Rodriguez 2014-07-29 23:02:56 -07:00
• 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. Jorge Rodriguez 2014-07-29 22:50:06 -07:00
• 68f93b72d5 Update documentation and add helper functions. Jorge Rodriguez 2014-07-29 20:18:28 -07:00
• 5b40906271 My perf testing code. Jorge Rodriguez 2014-07-29 17:44:45 -07:00
• d96c97298c This is still faster than the function pointer solution, and neater. Jorge Rodriguez 2014-07-29 16:22:22 -07:00
• 3a3e06029e This is definitely faster than the function pointer solution. Jorge Rodriguez 2014-07-29 12:11:03 -07:00
• 9bd5abb52d Both versions run within the margin of error on my machine so we'll go with the simpler one. Jorge Rodriguez 2014-07-29 11:44:32 -07:00
• 5dff80ed31 Trying some different strategies for optimizing the decoder. The code in #ifdef 1 is slightly faster by my measurements, but a whole lot uglier. Jorge Rodriguez 2014-07-29 11:39:42 -07:00
• 05f775e977 Merge branch 'master' of https://github.com/BSVino/stb Jorge Rodriguez 2014-07-29 00:33:54 -07:00
• 1fcf30ada0 Fix a math error. Jorge Rodriguez 2014-07-29 00:33:29 -07:00
• e2ac4f6505 More resample ideas Jorge Rodriguez 2014-07-27 12:05:17 -07:00
• ef3a460ec4 Some better looking horners save another multiplication. Jorge Rodriguez 2014-07-27 00:55:47 -07:00
• 7d47582578 Support for 16 and 32 bit integer images, and float images. Jorge Rodriguez 2014-07-27 00:09:22 -07:00
• 6c8cac0a66 Support for sRGB color space. Jorge Rodriguez 2014-07-26 23:44:45 -07:00
• 41dc4c476c In some situations with certain filter kernels with negative values it's possible to generate valid results > 1.0, so saturate it before we write it to make sure it doesn't overflow. Also fix incorrect filter radius while downsampling. Jorge Rodriguez 2014-07-26 22:49:56 -07:00
• af1ed58f51 Add wrap, fix reflect so it doesn't wrap. Jorge Rodriguez 2014-07-26 19:30:13 -07:00
• 8723567439 Add edge reflect mode. Jorge Rodriguez 2014-07-26 19:11:02 -07:00
• 6cd81d4dd5 Put the polynomials in horner form to save a multiplication. Jorge Rodriguez 2014-07-26 15:36:15 -07:00
• fb2f8df5cc Add mitchell filter. Jorge Rodriguez 2014-07-26 15:06:31 -07:00
• 69af963c42 Add catmull rom filter. Also, move the debug asserts for values <= 1 to the very end of the process. This will make these bugs a lot harder to find, but because some filter kernels have negative values it's possible for the buffers to have values > 1 up until the point where it's converted back to an int. Jorge Rodriguez 2014-07-26 14:52:28 -07:00
• 12acf87eec When downsampling start the buffer loop at -filter_texel_margin to make sure that all contributors get their taps in at the ring buffer. Jorge Rodriguez 2014-07-26 13:56:23 -07:00
• 155c71fb90 Reorder these loops because I think we get a cache win if we write the entire ring buffer entry at once. Jorge Rodriguez 2014-07-26 13:12:48 -07:00
• 01fb58d6b4 Add a bicubic filter. Jorge Rodriguez 2014-07-26 13:07:04 -07:00
• a95da9ee1d Unroll the multiply-add loops. At the cost of a function pointer dereference we get a whole lot of conditionals eliminated. Should be a solid win once the debug asserts are gone. Jorge Rodriguez 2014-07-26 12:04:39 -07:00
• 7abd4ccf34 Support for filters with larger support. Initial support for edge behavior. Jorge Rodriguez 2014-07-26 11:51:02 -07:00
• 62ff271c7a I put it in the to do list and now I can close my browser tab. Jorge Rodriguez 2014-07-25 00:08:23 -07:00
• 81c1ddf110 Keeping a list of suggestions so I don't forget them. Jorge Rodriguez 2014-07-25 00:00:40 -07:00
• 27926e78b8 Make consistent tests for whether we're doing upsampling or downsampling of width and height. Don't request memory for horizontal buffer or encode buffer if we don't need it. Jorge Rodriguez 2014-07-24 23:50:14 -07:00
• 666c025710 Fix non uniform scaling where out_w < in_w && out_h > in_h. Jorge Rodriguez 2014-07-24 23:32:25 -07:00
• 736596ba09 Fix non uniform scaling where out_w > in_w && out_h < in_h. Jorge Rodriguez 2014-07-24 23:27:29 -07:00
• 178e301ea4 Fix upsampling, avoid dereferencing in an inner loop. Jorge Rodriguez 2014-07-24 22:54:35 -07:00
• dbb7480f12 Fix nonuniform downsampling. Jorge Rodriguez 2014-07-24 22:30:35 -07:00
• fa69bc8551 Basic downsampling algorithm works for uniform sampling. Jorge Rodriguez 2014-07-24 22:09:08 -07:00
• 297266b27b Starting to implement downsampling. Jorge Rodriguez 2014-07-24 19:10:45 -07:00
• 7d8faf5727 Remove unused functions. Jorge Rodriguez 2014-07-24 15:02:54 -07:00
• 8ac052ac8a Avoid gaps between box filter kernels. Jorge Rodriguez 2014-07-24 15:02:39 -07:00
• 9e726bb3e4 The vertical resampling pass. Now all elements of the upscale algorithm are in place. Jorge Rodriguez 2014-07-24 14:20:18 -07:00
• 152965f334 Decode enough scanlines into a ring buffer to make sure that we have enough source scanlines to do a vertical sampling. Jorge Rodriguez 2014-07-24 00:47:00 -07:00
• 158effb62a More accurate names. Smaller size for contributors memory, more accurate to what's needed. Jorge Rodriguez 2014-07-23 23:08:06 -07:00
• 855fb207be Merge remote-tracking branch 'remotes/nothings/master' Jorge Rodriguez 2014-07-23 22:24:59 -07:00
• 55c5f0b3a0 Beginning of a more sophisticated resample algorithm, starting with calculating filter contributions per scan line. Jorge Rodriguez 2014-07-23 22:17:56 -07:00
• ee8e926317 even more resampling notes Sean Barrett 2014-07-22 12:45:24 -07:00
• 92b08aa98a more resampling notes Sean Barrett 2014-07-22 12:39:29 -07:00