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Add LCD shader ported from SameBoy

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Monroe88 2018-03-23 18:40:15 -05:00
parent 0a823a64d0
commit ad1db11b4a
3 changed files with 141 additions and 0 deletions
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15
handheld/sameboy-lcd-gbc-color-motionblur.slangp Normal file
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shaders = 3
shader0 = ../motionblur/shaders/response-time.slang
filter_linear0 = false
scale_type0 = source
scale0 = 1.0
shader1 = shaders/sameboy-lcd.slang
filter_linear1 = false
scale_type1 = viewport
scale1 = "1.0"
shader2 = shaders/color/gbc-color.slang
filter_linear2 = false
scale_type2 = viewport

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handheld/sameboy-lcd.slangp Normal file
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shaders = 1
shader0 = shaders/sameboy-lcd.slang
filter_linear0 = false
scale_type0 = "viewport"
scale0 = "1.0"

120
handheld/shaders/sameboy-lcd.slang Normal file
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#version 450
/*
SameBoy LCD shader
Author: LIJI32
License: MIT
Copyright (c) 2015-2016 Lior Halphon
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(std140, set = 0, binding = 0) uniform UBO
{
vec4 SourceSize;
vec4 OriginalSize;
vec4 OutputSize;
mat4 MVP;
} global;
#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;
#define COLOR_LOW 0.8
#define COLOR_HIGH 1.0
#define SCANLINE_DEPTH 0.1
void main()
{
vec2 pos = fract(vTexCoord * global.SourceSize.xy);
vec2 sub_pos = fract(vTexCoord * global.SourceSize.xy * 6);
vec4 center = texture(Source, vTexCoord);
vec4 left = texture(Source, vTexCoord - vec2(1.0 / global.SourceSize.x, 0));
vec4 right = texture(Source, vTexCoord + vec2(1.0 / global.SourceSize.x, 0));
if (pos.y < 1.0 / 6.0) {
center = mix(center, texture(Source, vTexCoord + vec2(0, -1.0 / global.SourceSize.y)), 0.5 - sub_pos.y / 2.0);
left = mix(left, texture(Source, vTexCoord + vec2(-1.0 / global.SourceSize.x, -1.0 / global.SourceSize.y)), 0.5 - sub_pos.y / 2.0);
right = mix(right, texture(Source, vTexCoord + vec2( 1.0 / global.SourceSize.x, -1.0 / global.SourceSize.y)), 0.5 - sub_pos.y / 2.0);
center *= sub_pos.y * SCANLINE_DEPTH + (1 - SCANLINE_DEPTH);
left *= sub_pos.y * SCANLINE_DEPTH + (1 - SCANLINE_DEPTH);
right *= sub_pos.y * SCANLINE_DEPTH + (1 - SCANLINE_DEPTH);
}
else if (pos.y > 5.0 / 6.0) {
center = mix(center, texture(Source, vTexCoord + vec2(0, 1.0 / global.SourceSize.y)), sub_pos.y / 2.0);
left = mix(left, texture(Source, vTexCoord + vec2(-1.0 / global.SourceSize.x, 1.0 / global.SourceSize.y)), sub_pos.y / 2.0);
right = mix(right, texture(Source, vTexCoord + vec2( 1.0 / global.SourceSize.x, 1.0 / global.SourceSize.y)), sub_pos.y / 2.0);
center *= (1.0 - sub_pos.y) * SCANLINE_DEPTH + (1 - SCANLINE_DEPTH);
left *= (1.0 - sub_pos.y) * SCANLINE_DEPTH + (1 - SCANLINE_DEPTH);
right *= (1.0 - sub_pos.y) * SCANLINE_DEPTH + (1 - SCANLINE_DEPTH);
}
vec4 midleft = mix(left, center, 0.5);
vec4 midright = mix(right, center, 0.5);
vec4 ret;
if (pos.x < 1.0 / 6.0) {
ret = mix(vec4(COLOR_HIGH * center.r, COLOR_LOW * center.g, COLOR_HIGH * left.b, 1),
vec4(COLOR_HIGH * center.r, COLOR_LOW * center.g, COLOR_LOW * left.b, 1),
sub_pos.x);
}
else if (pos.x < 2.0 / 6.0) {
ret = mix(vec4(COLOR_HIGH * center.r, COLOR_LOW * center.g, COLOR_LOW * left.b, 1),
vec4(COLOR_HIGH * center.r, COLOR_HIGH * center.g, COLOR_LOW * midleft.b, 1),
sub_pos.x);
}
else if (pos.x < 3.0 / 6.0) {
ret = mix(vec4(COLOR_HIGH * center.r , COLOR_HIGH * center.g, COLOR_LOW * midleft.b, 1),
vec4(COLOR_LOW * midright.r, COLOR_HIGH * center.g, COLOR_LOW * center.b, 1),
sub_pos.x);
}
else if (pos.x < 4.0 / 6.0) {
ret = mix(vec4(COLOR_LOW * midright.r, COLOR_HIGH * center.g , COLOR_LOW * center.b, 1),
vec4(COLOR_LOW * right.r , COLOR_HIGH * center.g, COLOR_HIGH * center.b, 1),
sub_pos.x);
}
else if (pos.x < 5.0 / 6.0) {
ret = mix(vec4(COLOR_LOW * right.r, COLOR_HIGH * center.g , COLOR_HIGH * center.b, 1),
vec4(COLOR_LOW * right.r, COLOR_LOW * midright.g, COLOR_HIGH * center.b, 1),
sub_pos.x);
}
else {
ret = mix(vec4(COLOR_LOW * right.r, COLOR_LOW * midright.g, COLOR_HIGH * center.b, 1),
vec4(COLOR_HIGH * right.r, COLOR_LOW * right.g , COLOR_HIGH * center.b, 1),
sub_pos.x);
}
FragColor = ret;
}