/*
{
"CATEGORIES" : [
"Pattern", "Color"
],
"DESCRIPTION" : "Draws basic graph paper pattern",
"ISFVSN" : "2",
"INPUTS" : [
{
"NAME" : "bgColor",
"TYPE" : "color",
"DEFAULT" : [
0.93999999761581421,
0.93999999761581421,
0.97000002861022949,
1
]
},
{
"NAME" : "lineColor",
"TYPE" : "color",
"DEFAULT" : [
0.63999998569488525,
0.76999998092651367,
0.95999997854232788,
1
]
},
{
"LABELS" : [
"0",
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8",
"9",
"10",
"11",
"12",
"13",
"14",
"15",
"16"
],
"NAME" : "majorDivisions",
"TYPE" : "long",
"DEFAULT" : 3,
"VALUES" : [
0,
1,
2,
3,
4,
5,
6,
7,
8,
9,
10,
11,
12,
13,
14,
15,
16
]
},
{
"LABELS" : [
"0",
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8"
],
"NAME" : "minorHDivisions",
"TYPE" : "long",
"DEFAULT" : 2,
"VALUES" : [
0,
1,
2,
3,
4,
5,
6,
7,
8
]
},
{
"LABELS" : [
"0",
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8"
],
"NAME" : "minorVDivisions",
"TYPE" : "long",
"DEFAULT" : 2,
"VALUES" : [
0,
1,
2,
3,
4,
5,
6,
7,
8
]
},
{
"NAME" : "majorDivisionLineWidth",
"TYPE" : "float",
"MAX" : 5,
"DEFAULT" : 3,
"MIN" : 1
},
{
"NAME" : "square",
"TYPE" : "bool",
"DEFAULT" : true
}
],
"CREDIT" : "VIDVOX"
}
*/
const float minorDivisionLineWidth = 1.0;
void main() {
vec4 inputPixelColor = bgColor;
vec2 loc = gl_FragCoord.xy;
vec2 divisionSize = (square) ? vec2(max(RENDERSIZE.x,RENDERSIZE.y)) : RENDERSIZE;
divisionSize = (divisionSize - majorDivisionLineWidth) / (1.0 + float(majorDivisions));
vec2 modLoc = mod(loc,divisionSize);
if ((modLoc.x < majorDivisionLineWidth)||(modLoc.y < majorDivisionLineWidth)) {
inputPixelColor = lineColor;
}
if (minorHDivisions > 0) {
vec2 locDivisionSize = (divisionSize) / (1.0+float(minorHDivisions));
modLoc = mod(loc,locDivisionSize);
if (modLoc.x < minorDivisionLineWidth) {
inputPixelColor = lineColor;
}
}
if (minorVDivisions > 0) {
vec2 locDivisionSize = (divisionSize) / (1.0+float(minorVDivisions));
modLoc = mod(loc,locDivisionSize);
if (modLoc.y < minorDivisionLineWidth) {
inputPixelColor = lineColor;
}
}
gl_FragColor = inputPixelColor;
}
