mirror of
https://github.com/italicsjenga/slang-shaders.git
synced 2024-11-23 08:11:29 +11:00
127 lines
4.3 KiB
Plaintext
127 lines
4.3 KiB
Plaintext
#version 450
|
|
|
|
/*
|
|
Hyllian's CRT Shader - pass1
|
|
|
|
Copyright (C) 2011-2016 Hyllian - sergiogdb@gmail.com
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
The above copyright notice and this permission notice shall be included in
|
|
all copies or substantial portions of the Software.
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
THE SOFTWARE.
|
|
*/
|
|
|
|
layout(push_constant) uniform Push
|
|
{
|
|
vec4 SourceSize;
|
|
vec4 OriginalSize;
|
|
vec4 OutputSize;
|
|
uint FrameCount;
|
|
float OutputGamma;
|
|
float PHOSPHOR;
|
|
float COLOR_BOOST;
|
|
float RED_BOOST;
|
|
float GREEN_BOOST;
|
|
float BLUE_BOOST;
|
|
float SCANLINES_STRENGTH;
|
|
float BEAM_MIN_WIDTH;
|
|
float BEAM_MAX_WIDTH;
|
|
} params;
|
|
|
|
#pragma parameter OutputGamma "CRT - Output Gamma" 2.2 0.0 5.0 0.1
|
|
#pragma parameter PHOSPHOR "CRT - Phosphor ON/OFF" 1.0 0.0 1.0 1.0
|
|
#pragma parameter COLOR_BOOST "CRT - Color Boost" 1.5 1.0 2.0 0.05
|
|
#pragma parameter RED_BOOST "CRT - Red Boost" 1.0 1.0 2.0 0.01
|
|
#pragma parameter GREEN_BOOST "CRT - Green Boost" 1.0 1.0 2.0 0.01
|
|
#pragma parameter BLUE_BOOST "CRT - Blue Boost" 1.0 1.0 2.0 0.01
|
|
#pragma parameter SCANLINES_STRENGTH "CRT - Scanline Strength" 0.72 0.0 1.0 0.02
|
|
#pragma parameter BEAM_MIN_WIDTH "CRT - Min Beam Width" 0.86 0.0 1.0 0.02
|
|
#pragma parameter BEAM_MAX_WIDTH "CRT - Max Beam Width" 1.0 0.0 1.0 0.02
|
|
|
|
#define OutputGamma params.OutputGamma
|
|
#define PHOSPHOR params.PHOSPHOR
|
|
#define COLOR_BOOST params.COLOR_BOOST
|
|
#define RED_BOOST params.RED_BOOST
|
|
#define GREEN_BOOST params.GREEN_BOOST
|
|
#define BLUE_BOOST params.BLUE_BOOST
|
|
#define SCANLINES_STRENGTH params.SCANLINES_STRENGTH
|
|
#define BEAM_MIN_WIDTH params.BEAM_MIN_WIDTH
|
|
#define BEAM_MAX_WIDTH params.BEAM_MAX_WIDTH
|
|
|
|
layout(std140, set = 0, binding = 0) uniform UBO
|
|
{
|
|
mat4 MVP;
|
|
} global;
|
|
|
|
#define GAMMA_OUT(color) pow(color, vec3(1.0 / OutputGamma, 1.0 / OutputGamma, 1.0 / OutputGamma))
|
|
|
|
#pragma stage vertex
|
|
layout(location = 0) in vec4 Position;
|
|
layout(location = 1) in vec2 TexCoord;
|
|
layout(location = 0) out vec2 vTexCoord;
|
|
|
|
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;
|
|
|
|
void main()
|
|
{
|
|
vec2 texture_size = params.SourceSize.xy;
|
|
|
|
vec3 color;
|
|
vec2 dx = vec2(1.0/texture_size.x, 0.0);
|
|
vec2 dy = vec2(0.0, 1.0/texture_size.y);
|
|
vec2 pix_coord = vTexCoord*texture_size+vec2(0.0,0.5);
|
|
|
|
vec2 tc = (floor(pix_coord)+vec2(0.0,0.5))/texture_size;
|
|
|
|
vec2 fp = fract(pix_coord);
|
|
|
|
vec3 color0 = texture(Source, tc - dy).xyz;
|
|
vec3 color1 = texture(Source, tc ).xyz;
|
|
|
|
float pos0 = fp.y;
|
|
float pos1 = 1 - fp.y;
|
|
|
|
vec3 lum0 = mix(vec3(BEAM_MIN_WIDTH), vec3(BEAM_MAX_WIDTH), color0);
|
|
vec3 lum1 = mix(vec3(BEAM_MIN_WIDTH), vec3(BEAM_MAX_WIDTH), color1);
|
|
|
|
vec3 d0 = clamp(pos0/(lum0+0.0000001), 0.0, 1.0);
|
|
vec3 d1 = clamp(pos1/(lum1+0.0000001), 0.0, 1.0);
|
|
|
|
d0 = exp(-10.0*SCANLINES_STRENGTH*d0*d0);
|
|
d1 = exp(-10.0*SCANLINES_STRENGTH*d1*d1);
|
|
|
|
color = clamp(color0*d0+color1*d1, 0.0, 1.0);
|
|
|
|
color *= COLOR_BOOST*vec3(RED_BOOST, GREEN_BOOST, BLUE_BOOST);
|
|
float mod_factor = vTexCoord.x * params.OutputSize.x;
|
|
|
|
vec3 dotMaskWeights = mix(
|
|
vec3(1.0, 0.7, 1.0),
|
|
vec3(0.7, 1.0, 0.7),
|
|
floor(mod(mod_factor, 2.0))
|
|
);
|
|
|
|
color.rgb *= mix(vec3(1.0, 1.0, 1.0), dotMaskWeights, PHOSPHOR);
|
|
|
|
color = GAMMA_OUT(color);
|
|
FragColor = vec4(color, 1.0);
|
|
} |