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Merge pull request #32 from rz5/master

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(retro) Ported retro-v2 and the respective preset.
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hizzlekizzle 2016-08-07 14:19:04 -05:00 committed by GitHub
parent 391c9e7912 f0c2969e74
commit 54a170d5a4
2 changed files with 83 additions and 0 deletions
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retro/retro-v2.slangp Normal file
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shaders = 1
shader0 = shaders/retro-v2.slang
filter_linear0 = false
scale_type_0 = source

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retro/shaders/retro-v2.slang Normal file
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#version 450
/*
Hyllian - Retro Shader - 2013
A re-implementation from the original made by Hyllian and DOLLS!
This program 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.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
layout(push_constant) uniform Push
{
float RETRO_PIXEL_SIZE;
} param;
// This value must be between 0.0 (totally black) and 1.0 (nearest neighbor)
#pragma parameter RETRO_PIXEL_SIZE "Retro Pixel Size" 0.84 0.0 1.0 0.01
layout(std140, set = 0, binding = 0) uniform UBO
{
mat4 MVP;
vec4 OutputSize;
vec4 OriginalSize;
vec4 SourceSize;
} global;
#pragma stage vertex
layout(location = 0) in vec4 Position;
layout(location = 1) in vec2 TexCoord;
layout(location = 0) out vec2 vTexCoord;
/*
VERTEX_SHADER
*/
void main()
{
gl_Position = global.MVP * Position;
vTexCoord = TexCoord;
}
#pragma stage fragment
layout(location = 0) in vec2 vTexCoord;
layout(location = 0) out vec4 FragColor;
layout(set = 0, binding = 2) uniform sampler2D Source;
/*
FRAGMENT SHADER
*/
void main()
{
// Reading the texel
vec3 E = pow(texture(Source, vTexCoord).xyz, vec3(2.4));
vec2 fp = fract(vTexCoord*global.SourceSize.xy);
vec2 ps = global.SourceSize.xy * global.OutputSize.zw;
vec2 f = clamp(clamp(fp + 0.5*ps, 0.0, 1.0) - param.RETRO_PIXEL_SIZE, vec2(0.0), ps)/ps;
float max_coord = max(f.x, f.y);
vec3 res = mix(E*(1.04+fp.x*fp.y), E*0.36, max_coord);
// Product interpolation
FragColor = vec4(clamp( pow(res, vec3(1.0 / 2.2)), 0.0, 1.0 ), 1.0);
}