mirror of
https://github.com/mpv-player/mpv
synced 2025-02-02 21:21:33 +00:00
libvo: add vo_gl3
This new vo is heavily based on vo_gl.c. It provides better scale filters, dithering, and optional color management with LittleCMS2. It requires OpenGL 3. Many features are enabled by default, so it will be slower than vo_gl. However, it can be tuned to behave almost as vo_gl.
This commit is contained in:
wm4
parent
b00c1335c8
commit
98052873da
2
.gitignore
vendored
2
.gitignore
vendored
@ -17,3 +17,5 @@
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/TAGS
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/locale
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/po
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libvo/vo_gl3_shaders.h
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8
Makefile
8
Makefile
@ -451,7 +451,7 @@ SRCS_MPLAYER-$(ESD) += libao2/ao_esd.c
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SRCS_MPLAYER-$(FBDEV) += libvo/vo_fbdev.c libvo/vo_fbdev2.c
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SRCS_MPLAYER-$(GGI) += libvo/vo_ggi.c
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SRCS_MPLAYER-$(GIF) += libvo/vo_gif89a.c
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SRCS_MPLAYER-$(GL) += libvo/gl_common.c libvo/vo_gl.c \
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SRCS_MPLAYER-$(GL) += libvo/gl_common.c libvo/vo_gl.c libvo/vo_gl3.c \
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pnm_loader.c
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SRCS_MPLAYER-$(GL_COCOA) += libvo/cocoa_common.m
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SRCS_MPLAYER-$(GL_SDL) += libvo/sdl_common.c
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@ -510,6 +510,7 @@ SRCS_MPLAYER = command.c \
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libao2/audio_out.c \
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libvo/aspect.c \
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libvo/csputils.c \
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libvo/filter_kernels.c \
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libvo/geometry.c \
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libvo/old_vo_wrapper.c \
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libvo/spuenc.c \
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@ -605,6 +606,11 @@ codec-cfg$(EXESUF): codec-cfg.c codec-cfg.h
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codecs.conf.h: codec-cfg$(EXESUF) etc/codecs.conf
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./$^ > $@
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libvo/vo_gl3_shaders.h: libvo/vo_gl3_shaders.glsl
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python ./bin_to_header.py $^ $@
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libvo/vo_gl3.c: libvo/vo_gl3_shaders.h
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# ./configure must be rerun if it changed
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config.mak: configure
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@echo "############################################################"
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21
configure
vendored
21
configure
vendored
@ -338,6 +338,7 @@ Optional features:
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--enable-smb enable Samba (SMB) input [autodetect]
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--enable-live enable LIVE555 Streaming Media [disable]
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--enable-nemesi enable Nemesi Streaming Media [autodetect]
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--enable-lcms2 enable LCMS2 support [autodetect]
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--disable-vcd disable VCD support [autodetect]
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--disable-bluray disable Blu-ray support [autodetect]
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--disable-dvdnav disable libdvdnav [autodetect]
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@ -637,6 +638,7 @@ _xanim=auto
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_real=auto
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_live=no
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_nemesi=auto
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_lcms2=auto
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_native_rtsp=yes
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_xinerama=auto
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_mga=auto
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@ -990,6 +992,8 @@ for ac_option do
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--disable-live) _live=no ;;
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--enable-nemesi) _nemesi=yes ;;
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--disable-nemesi) _nemesi=no ;;
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--enable-lcms2) _lcms2=yes ;;
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--disable-lcms2) _lcms2=no ;;
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--enable-xinerama) _xinerama=yes ;;
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--disable-xinerama) _xinerama=no ;;
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--enable-mga) _mga=yes ;;
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@ -5726,6 +5730,20 @@ else
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fi
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echores "$_qtx"
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echocheck "LCMS2 support"
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if test "$_lcms2" = auto ; then
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_lcms2=no
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if pkg_config_add lcms2 ; then
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_lcms2=yes
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fi
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fi
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if test "$_lcms2" = yes; then
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def_lcms2="#define CONFIG_LCMS2 1"
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else
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def_lcms2="#undef CONFIG_LCMS2"
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fi
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echores "$_lcms2"
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echocheck "Nemesi Streaming Media libraries"
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if test "$_nemesi" = auto && test "$networking" = yes ; then
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_nemesi=no
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@ -6518,6 +6536,7 @@ LIBDV = $_libdv
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LIBDVDCSS_INTERNAL = $_libdvdcss_internal
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LIBMAD = $_mad
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LIBNEMESI = $_nemesi
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LCMS2 = $_lcms2
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LIBNUT = $_libnut
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LIBPOSTPROC = $libpostproc
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LIBSMBCLIENT = $_smb
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@ -6874,6 +6893,8 @@ $def_smb
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$def_socklen_t
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$def_vstream
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$def_lcms2
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/* libvo options */
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$def_3dfx
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279
libvo/filter_kernels.c
Normal file
279
libvo/filter_kernels.c
Normal file
@ -0,0 +1,279 @@
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/*
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* This file is part of mplayer2.
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*
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* Most code for computing the weights is taken from Anti-Grain Geometry (AGG)
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* (licensed under GPL 2 or later), with modifications.
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* Copyright (C) 2002-2006 Maxim Shemanarev
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* http://vector-agg.cvs.sourceforge.net/viewvc/vector-agg/agg-2.5/include/agg_image_filters.h?view=markup
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*
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* Also see glumpy (BSD licensed), contains the same code in Python:
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* http://code.google.com/p/glumpy/source/browse/glumpy/image/filter.py
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*
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* Also see: Paul Heckbert's "zoom"
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*
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* Also see XBMC: ConvolutionKernels.cpp etc.
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*
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* mplayer2 is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mplayer2 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with mplayer2; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <stddef.h>
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#include <string.h>
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#include <math.h>
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#include <assert.h>
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#include "filter_kernels.h"
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// NOTE: all filters are separable, symmetric, and are intended for use with
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// a lookup table/texture.
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const struct filter_kernel *mp_find_filter_kernel(const char *name)
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{
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for (const struct filter_kernel *k = mp_filter_kernels; k->name; k++) {
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if (strcmp(k->name, name) == 0)
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return k;
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}
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return NULL;
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}
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// sizes = sorted list of available filter sizes, terminated with size 0
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// inv_scale = source_size / dest_size
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bool mp_init_filter(struct filter_kernel *filter, const int *sizes,
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double inv_scale)
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{
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// only downscaling requires widening the filter
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filter->inv_scale = inv_scale >= 1.0 ? inv_scale : 1.0;
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double support = filter->radius * filter->inv_scale;
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int size = ceil(2.0 * support);
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// round up to smallest available size that's still large enough
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if (size < sizes[0])
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size = sizes[0];
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const int *cursize = sizes;
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while (size > *cursize && *cursize)
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cursize++;
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if (*cursize) {
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filter->size = *cursize;
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return true;
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} else {
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// The filter doesn't fit - instead of failing completely, use the
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// largest filter available. This is incorrect, but better than refusing
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// to do anything.
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filter->size = cursize[-1];
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filter->inv_scale = filter->size / 2.0 / filter->radius;
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return false;
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}
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}
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// Calculate the 1D filtering kernel for N sample points.
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// N = number of samples, which is filter->size
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// The weights will be stored in out_w[0] to out_w[N - 1]
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// f = x0 - abs(x0), subpixel position in the range [0,1) or [0,1].
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void mp_compute_weights(struct filter_kernel *filter, double f, float *out_w)
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{
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assert(filter->size > 0);
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double sum = 0;
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for (int n = 0; n < filter->size; n++) {
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double x = f - (n - filter->size / 2 + 1);
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double w = filter->weight(filter, fabs(x) / filter->inv_scale);
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out_w[n] = w;
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sum += w;
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}
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//normalize
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for (int n = 0; n < filter->size; n++)
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out_w[n] /= sum;
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}
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// Fill the given array with weights for the range [0.0, 1.0]. The array is
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// interpreted as rectangular array of count * filter->size items.
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void mp_compute_lut(struct filter_kernel *filter, int count, float *out_array)
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{
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for (int n = 0; n < count; n++) {
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mp_compute_weights(filter, n / (double)(count - 1),
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out_array + filter->size * n);
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}
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}
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typedef struct filter_kernel kernel;
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static double bilinear(kernel *k, double x)
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{
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return 1.0 - x;
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}
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static double hanning(kernel *k, double x)
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{
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return 0.5 + 0.5 * cos(M_PI * x);
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}
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static double hamming(kernel *k, double x)
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{
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return 0.54 + 0.46 * cos(M_PI * x);
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}
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static double hermite(kernel *k, double x)
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{
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return (2.0 * x - 3.0) * x * x + 1.0;
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}
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static double quadric(kernel *k, double x)
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{
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// NOTE: glumpy uses 0.75, AGG uses 0.5
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if (x < 0.5)
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return 0.75 - x * x;
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if (x < 1.5)
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return 0.5 * (x - 1.5) * (x - 1.5);
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return 0;
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}
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static double bc_pow3(double x)
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{
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return (x <= 0) ? 0 : x * x * x;
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}
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static double bicubic(kernel *k, double x)
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{
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return (1.0/6.0) * ( bc_pow3(x + 2)
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- 4 * bc_pow3(x + 1)
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+ 6 * bc_pow3(x)
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- 4 * bc_pow3(x - 1));
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}
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static double bessel_i0(double epsilon, double x)
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{
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double sum = 1;
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double y = x * x / 4;
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double t = y;
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for (int i = 2; t > epsilon; i++) {
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sum += t;
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t *= y / (i * i);
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}
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return sum;
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}
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static double kaiser(kernel *k, double x)
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{
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double a = k->params[0];
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double b = k->params[1];
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double epsilon = 1e-12;
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double i0a = 1 / bessel_i0(epsilon, b);
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return bessel_i0(epsilon, a * sqrt(1 - x * x)) * i0a;
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}
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static double catmull_rom(kernel *k, double x)
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{
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if (x < 1.0)
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return 0.5 * (2.0 + x * x * (-5.0 + x * 3.0));
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if (x < 2.0)
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return 0.5 * (4.0 + x * (-8.0 + x * (5.0 - x)));
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return 0;
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}
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// Mitchell-Netravali
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static double mitchell(kernel *k, double x)
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{
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double b = k->params[0];
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double c = k->params[1];
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double
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p0 = (6.0 - 2.0 * b) / 6.0,
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p2 = (-18.0 + 12.0 * b + 6.0 * c) / 6.0,
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p3 = (12.0 - 9.0 * b - 6.0 * c) / 6.0,
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q0 = (8.0 * b + 24.0 * c) / 6.0,
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q1 = (-12.0 * b - 48.0 * c) / 6.0,
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q2 = (6.0 * b + 30.0 * c) / 6.0,
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q3 = (-b - 6.0 * c) / 6.0;
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if (x < 1.0)
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return p0 + x * x * (p2 + x * p3);
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if (x < 2.0)
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return q0 + x * (q1 + x * (q2 + x * q3));
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return 0;
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}
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static double spline16(kernel *k, double x)
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{
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if (x < 1.0)
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return ((x - 9.0/5.0 ) * x - 1.0/5.0 ) * x + 1.0;
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return ((-1.0/3.0 * (x-1) + 4.0/5.0) * (x-1) - 7.0/15.0 ) * (x-1);
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}
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static double spline36(kernel *k, double x)
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{
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if(x < 1.0)
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return ((13.0/11.0 * x - 453.0/209.0) * x - 3.0/209.0) * x + 1.0;
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if(x < 2.0)
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return ((-6.0/11.0 * (x - 1) + 270.0/209.0) * (x - 1) - 156.0/209.0)
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* (x - 1);
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return ((1.0/11.0 * (x - 2) - 45.0/209.0) * (x - 2) + 26.0/209.0)
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* (x - 2);
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}
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static double gaussian(kernel *k, double x)
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{
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return exp(-2.0 * x * x) * sqrt(2.0 / M_PI);
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}
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static double sinc(kernel *k, double x)
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{
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if (x == 0.0)
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return 1.0;
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double pix = M_PI * x;
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return sin(pix) / pix;
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}
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static double lanczos(kernel *k, double x)
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{
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double radius = k->size / 2;
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if (x < -radius || x > radius)
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return 0;
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if (x == 0)
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return 1;
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double pix = M_PI * x;
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return radius * sin(pix) * sin(pix / radius) / (pix * pix);
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}
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static double blackman(kernel *k, double x)
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{
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double radius = k->size / 2;
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if (x == 0.0)
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return 1.0;
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if (x > radius)
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return 0.0;
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x *= M_PI;
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double xr = x / radius;
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return (sin(x) / x) * (0.42 + 0.5 * cos(xr) + 0.08 * cos(2 * xr));
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}
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const struct filter_kernel mp_filter_kernels[] = {
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{"bilinear_slow", 1, bilinear},
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{"hanning", 1, hanning},
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{"hamming", 1, hamming},
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{"hermite", 1, hermite},
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{"quadric", 1.5, quadric},
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{"bicubic", 2, bicubic},
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{"kaiser", 1, kaiser, .params = {6.33, 6.33} },
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{"catmull_rom", 2, catmull_rom},
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{"mitchell", 2, mitchell, .params = {1.0/3.0, 1.0/3.0} },
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{"spline16", 2, spline16},
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{"spline36", 3, spline36},
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{"gaussian", 2, gaussian},
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{"sinc2", 2, sinc},
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{"sinc3", 3, sinc},
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{"sinc4", 4, sinc},
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{"lanczos2", 2, lanczos},
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{"lanczos3", 3, lanczos},
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{"lanczos4", 4, lanczos},
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{"blackman2", 2, blackman},
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{"blackman3", 3, blackman},
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{"blackman4", 4, blackman},
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{0}
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};
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45
libvo/filter_kernels.h
Normal file
45
libvo/filter_kernels.h
Normal file
@ -0,0 +1,45 @@
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/*
|
||||
* This file is part of mplayer2.
|
||||
*
|
||||
* mplayer2 is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* mplayer2 is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with mplayer2; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*/
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||||
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||||
#ifndef MPLAYER_FILTER_KERNELS_H
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#define MPLAYER_FILTER_KERNELS_H
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#include <stdbool.h>
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struct filter_kernel {
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const char *name;
|
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double radius;
|
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double (*weight)(struct filter_kernel *kernel, double x);
|
||||
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// The filter params can be changed at runtime. Only used by some filters.
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float params[2];
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// The following values are set by mp_init_filter() at runtime.
|
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// Number of coefficients; equals the rounded up radius multiplied with 2.
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int size;
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double inv_scale;
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};
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extern const struct filter_kernel mp_filter_kernels[];
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const struct filter_kernel *mp_find_filter_kernel(const char *name);
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bool mp_init_filter(struct filter_kernel *filter, const int *sizes,
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double scale);
|
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void mp_compute_weights(struct filter_kernel *filter, double f, float *out_w);
|
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void mp_compute_lut(struct filter_kernel *filter, int count, float *out_array);
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||||
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||||
#endif /* MPLAYER_FILTER_KERNELS_H */
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||||
@ -2587,3 +2587,19 @@ void uninit_mpglcontext(MPGLContext *ctx)
|
||||
}
|
||||
talloc_free(ctx);
|
||||
}
|
||||
|
||||
void mp_log_source(int mod, int lev, const char *src)
|
||||
{
|
||||
int line = 1;
|
||||
if (!src)
|
||||
return;
|
||||
while (*src) {
|
||||
const char *end = strchr(src, '\n');
|
||||
const char *next = end + 1;
|
||||
if (!end)
|
||||
next = end = src + strlen(src);
|
||||
mp_msg(mod, lev, "[%3d] %.*s\n", line, (int)(end - src), src);
|
||||
line++;
|
||||
src = next;
|
||||
}
|
||||
}
|
||||
|
||||
@ -431,6 +431,10 @@ void uninit_mpglcontext(MPGLContext *ctx);
|
||||
int create_mpglcontext(struct MPGLContext *ctx, int gl_flags, int gl_version,
|
||||
uint32_t d_width, uint32_t d_height, uint32_t flags);
|
||||
|
||||
// print a multi line string with line numbers (e.g. for shader sources)
|
||||
// mod, lev: module and log level, as in mp_msg()
|
||||
void mp_log_source(int mod, int lev, const char *src);
|
||||
|
||||
//function pointers loaded from the OpenGL library
|
||||
struct GL {
|
||||
void (GLAPIENTRY *Begin)(GLenum);
|
||||
|
||||
@ -84,6 +84,7 @@ extern struct vo_driver video_out_vdpau;
|
||||
extern struct vo_driver video_out_xv;
|
||||
extern struct vo_driver video_out_gl_nosw;
|
||||
extern struct vo_driver video_out_gl;
|
||||
extern struct vo_driver video_out_gl3;
|
||||
extern struct vo_driver video_out_dga;
|
||||
extern struct vo_driver video_out_sdl;
|
||||
extern struct vo_driver video_out_3dfx;
|
||||
@ -169,6 +170,9 @@ const struct vo_driver *video_out_drivers[] =
|
||||
#ifdef CONFIG_XV
|
||||
&video_out_xv,
|
||||
#endif
|
||||
#ifdef CONFIG_GL
|
||||
&video_out_gl3,
|
||||
#endif
|
||||
#ifdef CONFIG_X11
|
||||
#ifdef CONFIG_GL
|
||||
&video_out_gl_nosw,
|
||||
|
||||
2418
libvo/vo_gl3.c
Normal file
2418
libvo/vo_gl3.c
Normal file
File diff suppressed because it is too large
Load Diff
316
libvo/vo_gl3_shaders.glsl
Normal file
316
libvo/vo_gl3_shaders.glsl
Normal file
@ -0,0 +1,316 @@
|
||||
/*
|
||||
* This file is part of mplayer2.
|
||||
*
|
||||
* mplayer2 is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* mplayer2 is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with mplayer2; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*/
|
||||
|
||||
// Note that this file is not directly passed as shader, but run through some
|
||||
// text processing functions, and in fact contains multiple vertex and fragment
|
||||
// shaders.
|
||||
|
||||
// inserted at the beginning of all shaders
|
||||
#!section prelude
|
||||
#!section vertex_all
|
||||
uniform mat3 transform;
|
||||
uniform sampler3D lut_3d;
|
||||
|
||||
in vec2 vertex_position;
|
||||
in vec4 vertex_color;
|
||||
out vec4 color;
|
||||
in vec2 vertex_texcoord;
|
||||
out vec2 texcoord;
|
||||
|
||||
void main() {
|
||||
vec3 position = vec3(vertex_position, 1);
|
||||
#ifndef FIXED_SCALE
|
||||
position = transform * position;
|
||||
#endif
|
||||
gl_Position = vec4(position, 1);
|
||||
color = vertex_color;
|
||||
#ifdef USE_3DLUT
|
||||
color = vec4(texture(lut_3d, color.rgb).rgb, color.a);
|
||||
#endif
|
||||
texcoord = vertex_texcoord;
|
||||
}
|
||||
|
||||
#!section frag_eosd
|
||||
uniform sampler2D texture1;
|
||||
|
||||
in vec2 texcoord;
|
||||
in vec4 color;
|
||||
out vec4 out_color;
|
||||
|
||||
void main() {
|
||||
out_color = vec4(color.rgb, color.a * texture(texture1, texcoord).r);
|
||||
}
|
||||
|
||||
#!section frag_osd
|
||||
uniform sampler2D texture1;
|
||||
|
||||
in vec2 texcoord;
|
||||
in vec4 color;
|
||||
out vec4 out_color;
|
||||
|
||||
void main() {
|
||||
out_color = texture(texture1, texcoord).rrrg * color;
|
||||
}
|
||||
|
||||
#!section frag_video
|
||||
uniform sampler2D texture1;
|
||||
uniform sampler2D texture2;
|
||||
uniform sampler2D texture3;
|
||||
uniform sampler1D lut_c_1d;
|
||||
uniform sampler1D lut_l_1d;
|
||||
uniform sampler2D lut_c_2d;
|
||||
uniform sampler2D lut_l_2d;
|
||||
uniform sampler3D lut_3d;
|
||||
uniform sampler2D dither;
|
||||
uniform mat4x3 colormatrix;
|
||||
uniform vec3 inv_gamma;
|
||||
uniform float conv_gamma;
|
||||
uniform float dither_quantization;
|
||||
uniform float dither_multiply;
|
||||
uniform float filter_param1;
|
||||
|
||||
in vec2 texcoord;
|
||||
out vec4 out_color;
|
||||
|
||||
vec4 sample_bilinear(sampler2D tex, vec2 texcoord) {
|
||||
return texture(tex, texcoord);
|
||||
}
|
||||
|
||||
// Explanation how bicubic scaling with only 4 texel fetches is done:
|
||||
// http://www.mate.tue.nl/mate/pdfs/10318.pdf
|
||||
// 'Efficient GPU-Based Texture Interpolation using Uniform B-Splines'
|
||||
// Explanation why this algorithm normally always blurs, even with unit scaling:
|
||||
// http://bigwww.epfl.ch/preprints/ruijters1001p.pdf
|
||||
// 'GPU Prefilter for Accurate Cubic B-spline Interpolation'
|
||||
vec4 calcweights(float s) {
|
||||
vec4 t = vec4(-0.5, 0.1666, 0.3333, -0.3333) * s + vec4(1, 0, -0.5, 0.5);
|
||||
t = t * s + vec4(0, 0, -0.5, 0.5);
|
||||
t = t * s + vec4(-0.6666, 0, 0.8333, 0.1666);
|
||||
vec2 a = vec2(1 / t.z, 1 / t.w);
|
||||
t.xy = t.xy * a + vec2(1, 1);
|
||||
t.x = t.x + s;
|
||||
t.y = t.y - s;
|
||||
return t;
|
||||
}
|
||||
|
||||
vec4 sample_bicubic_fast(sampler2D tex, vec2 texcoord) {
|
||||
vec2 texsize = textureSize(tex, 0);
|
||||
vec2 pt = 1 / texsize;
|
||||
vec2 fcoord = fract(texcoord * texsize + vec2(0.5, 0.5));
|
||||
vec4 parmx = calcweights(fcoord.x);
|
||||
vec4 parmy = calcweights(fcoord.y);
|
||||
vec4 cdelta;
|
||||
cdelta.xz = parmx.rg * vec2(-pt.x, pt.x);
|
||||
cdelta.yw = parmy.rg * vec2(-pt.y, pt.y);
|
||||
// first y-interpolation
|
||||
vec4 ar = texture(tex, texcoord + cdelta.xy);
|
||||
vec4 ag = texture(tex, texcoord + cdelta.xw);
|
||||
vec4 ab = mix(ag, ar, parmy.b);
|
||||
// second y-interpolation
|
||||
vec4 br = texture(tex, texcoord + cdelta.zy);
|
||||
vec4 bg = texture(tex, texcoord + cdelta.zw);
|
||||
vec4 aa = mix(bg, br, parmy.b);
|
||||
// x-interpolation
|
||||
return mix(aa, ab, parmx.b);
|
||||
}
|
||||
|
||||
float[2] weights2(sampler1D lookup, float f) {
|
||||
vec4 c = texture(lookup, f);
|
||||
return float[2](c.r, c.g);
|
||||
}
|
||||
|
||||
float[4] weights4(sampler1D lookup, float f) {
|
||||
vec4 c = texture(lookup, f);
|
||||
return float[4](c.r, c.g, c.b, c.a);
|
||||
}
|
||||
|
||||
float[6] weights6(sampler2D lookup, float f) {
|
||||
vec4 c1 = texture(lookup, vec2(0.25, f));
|
||||
vec4 c2 = texture(lookup, vec2(0.75, f));
|
||||
return float[6](c1.r, c1.g, c1.b, c2.r, c2.g, c2.b);
|
||||
}
|
||||
|
||||
float[8] weights8(sampler2D lookup, float f) {
|
||||
vec4 c1 = texture(lookup, vec2(0.25, f));
|
||||
vec4 c2 = texture(lookup, vec2(0.75, f));
|
||||
return float[8](c1.r, c1.g, c1.b, c1.a, c2.r, c2.g, c2.b, c2.a);
|
||||
}
|
||||
|
||||
float[12] weights12(sampler2D lookup, float f) {
|
||||
vec4 c1 = texture(lookup, vec2(1.0/6.0, f));
|
||||
vec4 c2 = texture(lookup, vec2(0.5, f));
|
||||
vec4 c3 = texture(lookup, vec2(5.0/6.0, f));
|
||||
return float[12](c1.r, c1.g, c1.b, c1.a,
|
||||
c2.r, c2.g, c2.b, c2.a,
|
||||
c3.r, c3.g, c3.b, c3.a);
|
||||
}
|
||||
|
||||
float[16] weights16(sampler2D lookup, float f) {
|
||||
vec4 c1 = texture(lookup, vec2(0.125, f));
|
||||
vec4 c2 = texture(lookup, vec2(0.375, f));
|
||||
vec4 c3 = texture(lookup, vec2(0.625, f));
|
||||
vec4 c4 = texture(lookup, vec2(0.875, f));
|
||||
return float[16](c1.r, c1.g, c1.b, c1.a, c2.r, c2.g, c2.b, c2.a,
|
||||
c3.r, c3.g, c3.b, c3.a, c4.r, c4.g, c4.b, c4.a);
|
||||
}
|
||||
|
||||
#define CONVOLUTION_SEP_N(NAME, N) \
|
||||
vec4 NAME(sampler2D tex, vec2 texcoord, vec2 pt, float weights[N]) { \
|
||||
vec4 res = vec4(0); \
|
||||
for (int n = 0; n < N; n++) { \
|
||||
res += weights[n] * texture(tex, texcoord + pt * n); \
|
||||
} \
|
||||
return res; \
|
||||
}
|
||||
|
||||
CONVOLUTION_SEP_N(convolution_sep2, 2)
|
||||
CONVOLUTION_SEP_N(convolution_sep4, 4)
|
||||
CONVOLUTION_SEP_N(convolution_sep6, 6)
|
||||
CONVOLUTION_SEP_N(convolution_sep8, 8)
|
||||
CONVOLUTION_SEP_N(convolution_sep12, 12)
|
||||
CONVOLUTION_SEP_N(convolution_sep16, 16)
|
||||
|
||||
// The dir parameter is (0, 1) or (1, 0), and we expect the shader compiler to
|
||||
// remove all the redundant multiplications and additions.
|
||||
#define SAMPLE_CONVOLUTION_SEP_N(NAME, N, SAMPLERT, CONV_FUNC, WEIGHTS_FUNC)\
|
||||
vec4 NAME(vec2 dir, SAMPLERT lookup, sampler2D tex, vec2 texcoord) { \
|
||||
vec2 texsize = textureSize(tex, 0); \
|
||||
vec2 pt = (1 / texsize) * dir; \
|
||||
float fcoord = dot(fract(texcoord * texsize - 0.5), dir); \
|
||||
vec2 base = texcoord - fcoord * pt; \
|
||||
return CONV_FUNC(tex, base - pt * (N / 2 - 1), pt, \
|
||||
WEIGHTS_FUNC(lookup, fcoord)); \
|
||||
}
|
||||
|
||||
SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep2, 2, sampler1D, convolution_sep2, weights2)
|
||||
SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep4, 4, sampler1D, convolution_sep4, weights4)
|
||||
SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep6, 6, sampler2D, convolution_sep6, weights6)
|
||||
SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep8, 8, sampler2D, convolution_sep8, weights8)
|
||||
SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep12, 12, sampler2D, convolution_sep12, weights12)
|
||||
SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep16, 16, sampler2D, convolution_sep16, weights16)
|
||||
|
||||
|
||||
#define CONVOLUTION_N(NAME, N) \
|
||||
vec4 NAME(sampler2D tex, vec2 texcoord, vec2 pt, float taps_x[N], \
|
||||
float taps_y[N]) { \
|
||||
vec4 res = vec4(0); \
|
||||
for (int y = 0; y < N; y++) { \
|
||||
vec4 line = vec4(0); \
|
||||
for (int x = 0; x < N; x++) \
|
||||
line += taps_x[x] * texture(tex, texcoord + pt * vec2(x, y));\
|
||||
res += taps_y[y] * line; \
|
||||
} \
|
||||
return res; \
|
||||
}
|
||||
|
||||
CONVOLUTION_N(convolution2, 2)
|
||||
CONVOLUTION_N(convolution4, 4)
|
||||
CONVOLUTION_N(convolution6, 6)
|
||||
CONVOLUTION_N(convolution8, 8)
|
||||
CONVOLUTION_N(convolution12, 12)
|
||||
CONVOLUTION_N(convolution16, 16)
|
||||
|
||||
#define SAMPLE_CONVOLUTION_N(NAME, N, SAMPLERT, CONV_FUNC, WEIGHTS_FUNC) \
|
||||
vec4 NAME(SAMPLERT lookup, sampler2D tex, vec2 texcoord) { \
|
||||
vec2 texsize = textureSize(tex, 0); \
|
||||
vec2 pt = 1 / texsize; \
|
||||
vec2 fcoord = fract(texcoord * texsize - 0.5); \
|
||||
vec2 base = texcoord - fcoord * pt; \
|
||||
return CONV_FUNC(tex, base - pt * (N / 2 - 1), pt, \
|
||||
WEIGHTS_FUNC(lookup, fcoord.x), \
|
||||
WEIGHTS_FUNC(lookup, fcoord.y)); \
|
||||
}
|
||||
|
||||
SAMPLE_CONVOLUTION_N(sample_convolution2, 2, sampler1D, convolution2, weights2)
|
||||
SAMPLE_CONVOLUTION_N(sample_convolution4, 4, sampler1D, convolution4, weights4)
|
||||
SAMPLE_CONVOLUTION_N(sample_convolution6, 6, sampler2D, convolution6, weights6)
|
||||
SAMPLE_CONVOLUTION_N(sample_convolution8, 8, sampler2D, convolution8, weights8)
|
||||
SAMPLE_CONVOLUTION_N(sample_convolution12, 12, sampler2D, convolution12, weights12)
|
||||
SAMPLE_CONVOLUTION_N(sample_convolution16, 16, sampler2D, convolution16, weights16)
|
||||
|
||||
|
||||
// Unsharp masking
|
||||
vec4 sample_sharpen3(sampler2D tex, vec2 texcoord) {
|
||||
vec2 texsize = textureSize(tex, 0);
|
||||
vec2 pt = 1 / texsize;
|
||||
vec2 st = pt * 0.5;
|
||||
vec4 p = texture(tex, texcoord);
|
||||
vec4 sum = texture(tex, texcoord + st * vec2(+1, +1))
|
||||
+ texture(tex, texcoord + st * vec2(+1, -1))
|
||||
+ texture(tex, texcoord + st * vec2(-1, +1))
|
||||
+ texture(tex, texcoord + st * vec2(-1, -1));
|
||||
return p + (p - 0.25 * sum) * filter_param1;
|
||||
}
|
||||
|
||||
vec4 sample_sharpen5(sampler2D tex, vec2 texcoord) {
|
||||
vec2 texsize = textureSize(tex, 0);
|
||||
vec2 pt = 1 / texsize;
|
||||
vec2 st1 = pt * 1.2;
|
||||
vec4 p = texture(tex, texcoord);
|
||||
vec4 sum1 = texture(tex, texcoord + st1 * vec2(+1, +1))
|
||||
+ texture(tex, texcoord + st1 * vec2(+1, -1))
|
||||
+ texture(tex, texcoord + st1 * vec2(-1, +1))
|
||||
+ texture(tex, texcoord + st1 * vec2(-1, -1));
|
||||
vec2 st2 = pt * 1.5;
|
||||
vec4 sum2 = texture(tex, texcoord + st2 * vec2(+1, 0))
|
||||
+ texture(tex, texcoord + st2 * vec2( 0, +1))
|
||||
+ texture(tex, texcoord + st2 * vec2(-1, 0))
|
||||
+ texture(tex, texcoord + st2 * vec2( 0, -1));
|
||||
vec4 t = p * 0.859375 + sum2 * -0.1171875 + sum1 * -0.09765625;
|
||||
return p + t * filter_param1;
|
||||
}
|
||||
|
||||
void main() {
|
||||
#ifdef USE_PLANAR
|
||||
vec3 color = vec3(SAMPLE_L(texture1, texcoord).r,
|
||||
SAMPLE_C(texture2, texcoord).r,
|
||||
SAMPLE_C(texture3, texcoord).r);
|
||||
#else
|
||||
vec3 color = SAMPLE_L(texture1, texcoord).rgb;
|
||||
#endif
|
||||
#ifdef USE_GBRP
|
||||
color.gbr = color;
|
||||
#endif
|
||||
#ifdef USE_YGRAY
|
||||
// NOTE: actually slightly wrong for 16 bit input video, and completely
|
||||
// wrong for 9/10 bit input
|
||||
color.gb = vec2(128.0/255.0);
|
||||
#endif
|
||||
#ifdef USE_COLORMATRIX
|
||||
color = mat3(colormatrix) * color + colormatrix[3];
|
||||
#endif
|
||||
#ifdef USE_LINEAR_CONV
|
||||
color = pow(color, vec3(2.2));
|
||||
#endif
|
||||
#ifdef USE_LINEAR_CONV_INV
|
||||
// Convert from linear RGB to gamma RGB before putting it through the 3D-LUT
|
||||
// in the final stage.
|
||||
color = pow(color, vec3(1.0/2.2));
|
||||
#endif
|
||||
#ifdef USE_GAMMA_POW
|
||||
color = pow(color, inv_gamma);
|
||||
#endif
|
||||
#ifdef USE_3DLUT
|
||||
color = texture(lut_3d, color).rgb;
|
||||
#endif
|
||||
#ifdef USE_DITHER
|
||||
float dither = texture(dither, gl_FragCoord.xy / textureSize(dither, 0)).r;
|
||||
color = floor(color * dither_multiply + dither ) / dither_quantization;
|
||||
#endif
|
||||
out_color = vec4(color, 1);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user