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* vo_opengl: fix shader compilation regressionwm42015-12-081-4/+0
| | | | | | | | | | The recent LUT adjustment changes broke interpolation. The concatenation of the shader stages is a bit messy, and it seems like sampler_prelude is not a good place to add this macro. Always add the macro to every shader instead. (While this doesn't seem too elegant, this isn't too inelegant either, and goes these problems out of the way.)
* vo_opengl: Fix minor LUT sampling errorBin Jin2015-12-071-7/+15
| | | | | | Define a macro to correct the coordinate for lookup texture. Cache the corrected coordinate for 1D filter and use mix() to minimize the performance impact.
* vo_opengl: improve boundary check for polar filtersBin Jin2015-12-051-2/+2
| | | | | | | | | If the sampling point is placed diagonally, the radius difference could be as large as sqrt(2.0). And a loosened check with (radius - 1) would potentially include pixels out of the range. Fix the check to handle those corner case properly to avoid unnecessary texture lookup and improve the performance a bit.
* vo_opengl: make 1D textures completely optionalwm42015-11-191-1/+5
| | | | | | | | Polar scalers use 1D textures, because they're slightly faster on some GPUs than 2D textures. But 2D textures work too, so add support for them. Allows using these scalers with ANGLE.
* vo_opengl: fix some more GLES shader issueswm42015-11-191-6/+6
| | | | | | Just like commit f9a2fc59. There are probably some more such cases. The vec2 constructor calls are probably fine, but don't bother with confusing inconsistencies.
* vo_opengl: make the default debanding settings less excessiveNiklas Haas2015-10-211-2/+2
| | | | | | | | | It's great that the new algorithm supports multiple placebo iterations and all, but it's really not necessary and hurts performance in the general case for the sake of the 0.1% that actually pause the screen and look for minute differences. Signed-off-by: wm4 <wm4@nowhere>
* vo_opengl: cosmetics: coding stylewm42015-09-301-46/+45
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* vo_opengl: remove sharpen scalers, add sharpen sub-optionwm42015-09-231-38/+23
| | | | | | | | | | | | This turns the old scalers (inherited from MPlayer) into a pre- processing step (after color conversion and before scaling). The code for the "sharpen5" scaler is reused for this. The main reason MPlayer implemented this as scalers was perhaps because FBOs were too expensive, and making it a scaler allowed to implement this in 1 pass. But unsharp masking is not really a scaler, and I would guess the result is more like combining bilinear scaling and unsharp masking.
* vo_opengl: move deband_opts declaration to where it's usedwm42015-09-231-0/+8
| | | | At least one thing the current option code can do right.
* vo_opengl: fix shader compilation with debanding and OSX hwdecwm42015-09-101-3/+4
| | | | | | 2 things are being stupid here: Apple for requiring rectangle textures with their IOSurface interop for no reason, and OpenGL having a different sampler type for rectangle textures.
* vo_opengl: implement debanding (and remove source-shader)Niklas Haas2015-09-091-0/+89
| | | | | | | | | | The removal of source-shader is a side effect, since this effectively replaces it - and the video-reading code has been significantly restructured to make more sense and be more readable. This means users no longer have to constantly download and maintain a separate deband.glsl installation alongside mpv, which was the only real use case for source-shader that we found either way.
* vo_opengl: move self-contained shader routines to a separate fileNiklas Haas2015-09-091-0/+339
This is mostly to cut down somewhat on the amount of code bloat in video.c by moving out helper functions (including scaler kernels and color management routines) to a separate file. It would certainly be possible to move out more functions (eg. dithering or CMS code) with some extra effort/refactoring, but this is a start. Signed-off-by: wm4 <wm4@nowhere>