mirror of
https://github.com/libretro/slang-shaders.git
synced 2024-05-20 05:01:06 -04:00
259ff81f4b
* Move initial batch of shaders and presets to smoothing subdirectory * Rename smoothing to edge enhancement * Move cubic and windowed into interpolation * Fix some presets * Fix rest of presets * Rename edge-enhancement to edge-smoothing * Move pixel art scalers into separate directory separate from 'interpolation' * Flatten interpolation/cubic into interpolation/
114 lines
3.6 KiB
Plaintext
114 lines
3.6 KiB
Plaintext
#version 450
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layout(push_constant) uniform Push
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{
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vec4 SourceSize;
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float trY;
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float trU;
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float trV;
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} registers;
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layout(std140, set = 0, binding = 0) uniform UBO
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{
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mat4 MVP;
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} global;
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/*
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* Copyright (C) 2003 Maxim Stepin ( maxst@hiend3d.com )
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*
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* Copyright (C) 2010 Cameron Zemek ( grom@zeminvaders.net )
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*
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* Copyright (C) 2014 Jules Blok ( jules@aerix.nl )
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This program 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#pragma parameter trY "Y Threshold" 48.0 0.0 255.0 1.0
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#pragma parameter trU "U Threshold" 7.0 0.0 255.0 1.0
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#pragma parameter trV "V Threshold" 6.0 0.0 255.0 1.0
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vec3 yuv_threshold = vec3(registers.trY/255.0, registers.trU/255.0, registers.trV/255.0);
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const mat3 yuv = mat3(0.299, -0.169, 0.5, 0.587, -0.331, -0.419, 0.114, 0.5, -0.081);
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const vec3 yuv_offset = vec3(0.0, 0.5, 0.5);
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bool diff(vec3 yuv1, vec3 yuv2) {
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bvec3 res = greaterThan(abs((yuv1 + yuv_offset) - (yuv2 + yuv_offset)) , yuv_threshold);
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return res.x || res.y || res.z;
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}
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#pragma stage vertex
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layout(location = 0) in vec4 Position;
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layout(location = 1) in vec2 TexCoord;
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layout(location = 0) out vec2 vTexCoord;
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layout(location = 1) out vec4 t1;
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layout(location = 2) out vec4 t2;
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layout(location = 3) out vec4 t3;
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void main()
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{
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gl_Position = global.MVP * Position;
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vTexCoord = TexCoord;
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float dx = registers.SourceSize.z;
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float dy = registers.SourceSize.w;
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// +----+----+----+
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// | | | |
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// | w1 | w2 | w3 |
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// +----+----+----+
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// | | | |
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// | w4 | w5 | w6 |
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// +----+----+----+
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// | | | |
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// | w7 | w8 | w9 |
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// +----+----+----+
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t1 = vTexCoord.xxxy + vec4(-dx, 0, dx, -dy); // w1 | w2 | w3;
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t2 = vTexCoord.xxxy + vec4(-dx, 0, dx, 0); // w4 | w5 | w6;
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t3 = vTexCoord.xxxy + vec4(-dx, 0, dx, dy); // w7 | w8 | w9;
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}
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#pragma stage fragment
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layout(location = 0) in vec2 vTexCoord;
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layout(location = 1) in vec4 t1;
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layout(location = 2) in vec4 t2;
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layout(location = 3) in vec4 t3;
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layout(location = 0) out vec4 FragColor;
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layout(set = 0, binding = 2) uniform sampler2D Source;
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void main()
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{
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vec3 w1 = yuv * texture(Source, t1.xw).rgb;
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vec3 w2 = yuv * texture(Source, t1.yw).rgb;
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vec3 w3 = yuv * texture(Source, t1.zw).rgb;
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vec3 w4 = yuv * texture(Source, t2.xw).rgb;
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vec3 w5 = yuv * texture(Source, t2.yw).rgb;
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vec3 w6 = yuv * texture(Source, t2.zw).rgb;
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vec3 w7 = yuv * texture(Source, t3.xw).rgb;
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vec3 w8 = yuv * texture(Source, t3.yw).rgb;
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vec3 w9 = yuv * texture(Source, t3.zw).rgb;
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vec3 pattern_1 = vec3(diff(w5, w1), diff(w5, w2), diff(w5, w3));
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vec3 pattern_2 = vec3(diff(w5, w4), false, diff(w5, w6));
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vec3 pattern_3 = vec3(diff(w5, w7), diff(w5, w8), diff(w5, w9));
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vec4 cross = vec4(diff(w4, w2), diff(w2, w6), diff(w8, w4), diff(w6, w8));
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vec2 index;
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index.x = dot(pattern_1, vec3(1, 2, 4)) +
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dot(pattern_2, vec3(8, 0, 16)) +
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dot(pattern_3, vec3(32, 64, 128));
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index.y = dot(cross, vec4(1, 2, 4, 8));
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FragColor = vec4(index / vec2(255.0, 15.0), 0.0, 1.0);
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} |