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add parameters to dotmask shader

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hunterk 2016-10-06 09:21:19 -05:00
parent 1cc61065e6
commit bd4d99a096
1 changed files with 37 additions and 25 deletions
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62
crt/shaders/dotmask.slang
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@ -1,17 +1,29 @@
#version 450
/*
Dot Mask
Authors: cgwg, Timothy Lottes
License: GPL
Note: This shader is just the dotmask functions from cgwg's CRT shader and crt-lottes.
*/
layout(std140, set = 0, binding = 0) uniform UBO
{
mat4 MVP;
vec4 OutputSize;
vec4 OriginalSize;
vec4 SourceSize;
float DOTMASK_STRENGTH;
float maskDark;
float maskLight;
float shadowMask;
} global;
#define DOTMASK_STRENGTH 0.3
#define maskDark 0.5
#define maskLight 1.5
#define shadowMask 0.0
#pragma parameter DOTMASK_STRENGTH "CGWG Dot Mask Strength" 0.3 0.0 1.0 0.01
#pragma parameter maskDark "Lottes maskDark" 0.5 0.0 2.0 0.1
#pragma parameter maskLight "Lottes maskLight" 1.5 0.0 2.0 0.1
#pragma parameter shadowMask "Mask Style" 3.0 0.0 4.0 1.0
#define mod_factor vTexCoord.x * global.SourceSize.x * global.OutputSize.x / global.SourceSize.x
@ -33,50 +45,50 @@ layout(set = 0, binding = 2) uniform sampler2D Source;
// Shadow mask.
vec3 Mask(vec2 pos){
vec3 mask=vec3(maskDark,maskDark,maskDark);
vec3 mask=vec3(global.maskDark,global.maskDark,global.maskDark);
// Very compressed TV style shadow mask.
if (shadowMask == 1.0) {
float line=maskLight;
if (global.shadowMask == 1.0) {
float line=global.maskLight;
float odd=0.0;
if(fract(pos.x/6.0)<0.5)odd=1.0;
if(fract((pos.y+odd)/2.0)<0.5)line=maskDark;
if(fract((pos.y+odd)/2.0)<0.5)line=global.maskDark;
pos.x=fract(pos.x/3.0);
if(pos.x<0.333)mask.r=maskLight;
else if(pos.x<0.666)mask.g=maskLight;
else mask.b=maskLight;
if(pos.x<0.333)mask.r=global.maskLight;
else if(pos.x<0.666)mask.g=global.maskLight;
else mask.b=global.maskLight;
mask*=line;
}
// Aperture-grille.
else if (shadowMask == 2.0) {
else if (global.shadowMask == 2.0) {
pos.x=fract(pos.x/3.0);
if(pos.x<0.333)mask.r=maskLight;
else if(pos.x<0.666)mask.g=maskLight;
else mask.b=maskLight;
if(pos.x<0.333)mask.r=global.maskLight;
else if(pos.x<0.666)mask.g=global.maskLight;
else mask.b=global.maskLight;
}
// Stretched VGA style shadow mask (same as prior shaders).
else if (shadowMask == 3.0) {
else if (global.shadowMask == 3.0) {
pos.x+=pos.y*3.0;
pos.x=fract(pos.x/6.0);
if(pos.x<0.333)mask.r=maskLight;
else if(pos.x<0.666)mask.g=maskLight;
else mask.b=maskLight;
if(pos.x<0.333)mask.r=global.maskLight;
else if(pos.x<0.666)mask.g=global.maskLight;
else mask.b=global.maskLight;
}
// VGA style shadow mask.
else if (shadowMask == 4.0) {
else if (global.shadowMask == 4.0) {
pos.xy=floor(pos.xy*vec2(1.0,0.5));
pos.x+=pos.y*3.0;
pos.x=fract(pos.x/6.0);
if(pos.x<0.333)mask.r=maskLight;
else if(pos.x<0.666)mask.g=maskLight;
else mask.b=maskLight;
if(pos.x<0.333)mask.r=global.maskLight;
else if(pos.x<0.666)mask.g=global.maskLight;
else mask.b=global.maskLight;
}
return mask;}
@ -85,14 +97,14 @@ void main()
{
vec3 res = texture(Source, vTexCoord).rgb;
float mask = 1.0 - DOTMASK_STRENGTH;
float mask = 1.0 - global.DOTMASK_STRENGTH;
//cgwg's dotmask emulation:
//Output pixels are alternately tinted green and magenta
vec3 dotMaskWeights = mix(vec3(1.0, mask, 1.0),
vec3(mask, 1.0, mask),
floor(mod(mod_factor, 2.0)));
if (shadowMask == 0) {
if (global.shadowMask == 0) {
res *= dotMaskWeights;
}
else {