1 Movit 1.4.0, November 5th, 2016
3 - Allow setting the intermediate format for chains, instead of hardcoding
4 it at 16-bit RGBA; advanced users can use this to e.g. ask for 8-bit
5 sRGB intermediates, reducing the amount of memory bandwidth needed
6 at the cost of reduced precision. Whether this is a good tradeoff or not
7 depends on the exact chain and your requirements.
9 - Fix an issue where a (cached) shader program could be used from multiple
10 threads at a time, causing the uniforms to contain unpredictable values.
12 - Make the error printed on check_error() slightly friendlier: Include the
13 enum if possible, and print it to stderr instead of stdout.
16 Movit 1.3.2, February 23rd, 2016
18 - Fix an issue with initialization in certain locales. Patch from
19 Jean-Baptiste Mardelle.
22 Movit 1.3.1, February 15th, 2016
24 - Fix an issue where certain effect chains (particularly involving
25 out-of-tree effects that return only a constant color) could cause
26 texture coordinates not to be set properly. (The new code probably
27 also has slightly lower OpenGL driver overhead.) Reported by
31 Movit 1.3.0, January 31st, 2016
33 - Movit now requires GLSL 1.30 (so a driver from 2008 or later);
34 before, it claimed to support 1.10, but actually used 1.30 features.
35 Note that some OpenGL drivers, in particular on OS X, only supports
36 GLSL 1.30 (actually, 1.50) if you have an OpenGL core context.
38 - Add a deinterlacer, based on YADIF.
40 - Allow parallel output to RGBA and Y'CbCr textures at the same time.
42 - Make FlatInput and YCbCrInput support taking in external OpenGL
43 textures. Also allow them to change width/height after instantiation.
45 - Various compatibility and performance fixes. In particular,
46 fp16 conversion on older (non-Haswell) CPUs is much faster, due to
47 new conversion code by Fabian Giesen.
50 Movit 1.2.0, September 24th, 2015
52 - Movit now ships a version.h with a #define MOVIT_VERSION that
53 increases on every API change, including in git. (The number
54 itself carries no semantic meaning beyond this.) Movit 1.2.0
55 is not API or ABI compatible with 1.1.x, so there has been a
56 soname bump to libmovit.so.3.
58 - More flexible Y'CbCr input; in particular, a special input
59 for 4:2:2 interleaved data (UYVY), and support for semi-planar
60 input (Cb and Cr in the same texture, like in NV12). Note that
61 you should now also set the new “num_levels” member of
62 YCbYCbCrFormat to 256 (signifying 8-bit input), although
63 it is not used yet; this is a stepping stone towards supporting
64 10- and 12-bit Y'CbCr.
66 - Basic support for Y'CbCr _output_. Currently only 8-bit,
67 and only 4:4:4 (ie., you'll need to subsample yourself
68 afterwards). It is possible to split the output into multiple
69 textures, though, if you want a luma/chroma split (NV12-like)
72 - Support top-left origin for output. This is only really useful
73 if you are rendering directly into some memory area with top-left
74 origin; most users will get the expected behavior by using
75 bottom-left as before.
77 - Rework uniform handling for less OpenGL overhead. Note that
78 this means your effects now need to register uniforms in the
79 C++ code instead of declaring them in the .frag file.
81 - Make the PaddingEffect border subpixel-aware, and also support
82 an arbitrary (subpixel) border offset. This means that you can
83 compose PaddingEffect with an integral left/top offset
84 (use the new IntegralPaddingEffect for potentially more speed)
85 and ResampleEffect with a subpixel left/top offset (and zoom to
86 compensate) to get Lanczos interpolation for the pixels and a
87 simple bilinear interpolation for the border itself.
89 - Fix a bug that could cause very bad filter weights in
92 - Various performance improvements, in particular with regards to
93 CPU usage in ResampleEffect.
96 Movit 1.1.3, March 29th, 2015
98 - Fix accuracy issues in ResampleEffect, particularly when
99 zooming. Note that this might cost a few percent performance.
100 Reported by Christophe Thommeret.
102 - Make the number of BlurEffect taps configurable.
103 Based on patch by Christophe Thommeret.
105 - Multiple other bugfixes, some courtesy Dan Dennedy and
106 Christophe Thommeret. In particular, thread-safety fixes
107 related to locales and chain finalization.
110 Movit 1.1.2, August 12th, 2014
112 - Performance bugfix: Fix texture freelist behavior so that it's
113 LRU instead of the exact opposite. Patch by Christophe Thommeret.
115 - Performance bugfix: Correct the number of blur taps read in the
116 blur filter (it was reading about twice as many as it should).
117 Also found by Christophe Thommeret.
120 Movit 1.1.1, April 12th, 2014
122 - Fix an issue that could cause assertion failure in ResourcePool
123 when FBOs are reused, especially with NVIDIA's drivers.
126 Movit 1.1, April 10th, 2014
128 - NOTE: Movit now uses libepoxy rather than GLEW. This is needed because
129 of core context and GLES3 support (see below). Movit 1.1 should be
130 generally API-compatible with 1.0.3 (with the exception of the next
131 point), but is not ABI-compatible, so there has been a soname bump
134 - NOTE: The rules for using an EffectChain or ResourcePool in multiple
135 OpenGL contexts or threads have changed somewhat; see the comments in
138 - Movit will now work in OpenGL core contexts, and on GLES 3.0 or newer.
139 (GLES2 devices are not supported.) This also holds for all unit tests,
140 provided that you use SDL2 and not SDL1 (because SDL2 is needed to set
141 up such contexts). Note that the included demo application still requires
142 a classic OpenGL context.
144 - ResampleEffect can now do sub-pixel translate and/or zoom.
146 - LumaMixEffect now has an “invert” flag, as a convenience to e.g. change
147 a left-to-right wipe into a right-to-left one.
149 - Significant reduction in driver overhead, especially on NVIDIA drivers.
151 - Various smaller bugfixes and performance improvements.
154 Movit 1.0.3, March 16th, 2014
156 - Yet more build system tweaks mainly related to distribution packaging.
159 Movit 1.0.2, March 16th, 2014
161 - Make a few tweaks to “make install”, to make distributions' lives easier.
164 Movit 1.0.1, March 16th, 2014
166 - Fix so that shared libraries are built.
169 Movit 1.0, March 16th, 2014