/*{
"DESCRIPTION": "buffers the last 3 frames and draws a 2x2 grid of the 4 current frames available",
"ISFVSN": "2",
"CREDIT": "by VIDVOX",
"CATEGORIES": [
"Tile Effect", "Stylize"
],
"INPUTS": [
{
"NAME": "inputImage",
"TYPE": "image"
},
{
"NAME": "lag",
"TYPE": "bool",
"DEFAULT": 1.0
},
{
"NAME": "hueShift",
"TYPE": "float",
"MIN": 0.0,
"MAX": 1.0,
"DEFAULT": 0.0
}
],
"PASSES": [
{
"TARGET":"buffer8",
"PERSISTENT": true,
"WIDTH": "$WIDTH/3.0",
"HEIGHT": "$HEIGHT/3.0"
},
{
"TARGET":"buffer7",
"PERSISTENT": true,
"WIDTH": "$WIDTH/3.0",
"HEIGHT": "$HEIGHT/3.0"
},
{
"TARGET":"buffer6",
"PERSISTENT": true,
"WIDTH": "$WIDTH/3.0",
"HEIGHT": "$HEIGHT/3.0"
},
{
"TARGET":"buffer5",
"PERSISTENT": true,
"WIDTH": "$WIDTH/3.0",
"HEIGHT": "$HEIGHT/3.0"
},
{
"TARGET":"buffer4",
"PERSISTENT": true,
"WIDTH": "$WIDTH/3.0",
"HEIGHT": "$HEIGHT/3.0"
},
{
"TARGET":"buffer3",
"PERSISTENT": true,
"WIDTH": "$WIDTH/3.0",
"HEIGHT": "$HEIGHT/3.0"
},
{
"TARGET":"buffer2",
"PERSISTENT": true,
"WIDTH": "$WIDTH/3.0",
"HEIGHT": "$HEIGHT/3.0"
},
{
"TARGET":"buffer1",
"PERSISTENT": true,
"WIDTH": "$WIDTH/3.0",
"HEIGHT": "$HEIGHT/3.0"
},
{
}
]
}*/
vec3 rgb2hsv(vec3 c) {
vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
//vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));
//vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));
vec4 p = c.g < c.b ? vec4(c.bg, K.wz) : vec4(c.gb, K.xy);
vec4 q = c.r < p.x ? vec4(p.xyw, c.r) : vec4(c.r, p.yzx);
float d = q.x - min(q.w, q.y);
float e = 1.0e-10;
return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
}
vec3 hsv2rgb(vec3 c) {
vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);
return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
}
void main()
{
// first pass: read the "buffer7" into "buffer8"
// apply lag on each pass
if (PASSINDEX == 0) {
if ((lag == false)||(mod(floor(TIME*60.0+5.0),6.0)<=1.0)) {
gl_FragColor = IMG_THIS_NORM_PIXEL(buffer7);
}
else {
gl_FragColor = IMG_THIS_NORM_PIXEL(buffer8);
}
}
else if (PASSINDEX == 1) {
if ((lag == false)||(mod(floor(TIME*60.0+3.0),6.0)<=1.0)) {
gl_FragColor = IMG_THIS_NORM_PIXEL(buffer6);
}
else {
gl_FragColor = IMG_THIS_NORM_PIXEL(buffer7);
}
}
else if (PASSINDEX == 2) {
if ((lag == false)||(mod(floor(TIME*60.0+2.0),6.0)<=1.0)) {
gl_FragColor = IMG_THIS_NORM_PIXEL(buffer5);
}
else {
gl_FragColor = IMG_THIS_NORM_PIXEL(buffer6);
}
}
else if (PASSINDEX == 3) {
if ((lag == false)||(mod(floor(TIME*60.0+5.0),6.0)<=1.0)) {
gl_FragColor = IMG_THIS_NORM_PIXEL(buffer4);
}
else {
gl_FragColor = IMG_THIS_NORM_PIXEL(buffer5);
}
}
else if (PASSINDEX == 4) {
if ((lag == false)||(mod(floor(TIME*60.0+1.0),6.0)<=1.0)) {
gl_FragColor = IMG_THIS_NORM_PIXEL(buffer3);
}
else {
gl_FragColor = IMG_THIS_NORM_PIXEL(buffer4);
}
}
else if (PASSINDEX == 5) {
if ((lag == false)||(mod(floor(TIME*60.0+3.0),6.0)<=1.0)) {
gl_FragColor = IMG_THIS_NORM_PIXEL(buffer2);
}
else {
gl_FragColor = IMG_THIS_NORM_PIXEL(buffer3);
}
}
else if (PASSINDEX == 6) {
if ((lag == false)||(mod(floor(TIME*60.0+5.0),6.0)<=1.0)) {
gl_FragColor = IMG_THIS_NORM_PIXEL(buffer1);
}
else {
gl_FragColor = IMG_THIS_NORM_PIXEL(buffer2);
}
}
else if (PASSINDEX == 7) {
if ((lag == false)||(mod(floor(TIME*60.0+3.0),6.0)<=1.0)) {
gl_FragColor = IMG_THIS_NORM_PIXEL(inputImage);
}
else {
gl_FragColor = IMG_THIS_NORM_PIXEL(buffer1);
}
}
else if (PASSINDEX == 8) {
// Figure out which section I'm in and draw the appropriate buffer there
vec2 tex = isf_FragNormCoord;
vec4 color = vec4(0.0);
// TL – input
if (tex.y > 0.667) {
if (tex.x < 0.333) {
tex.x = tex.x * 3.0;
tex.y = (tex.y - 0.667) * 3.0;
color = IMG_NORM_PIXEL(inputImage, tex);
}
// TM – buffer1
else if ((tex.x > 0.333) && (tex.x < 0.667)) {
tex.x = (tex.x - 0.333) * 3.0;
tex.y = (tex.y - 0.667) * 3.0;
color = IMG_NORM_PIXEL(buffer1, tex);
color.rgb = rgb2hsv(color.rgb);
color.r = mod(color.r + 1.0 * hueShift, 1.0);
color.rgb = hsv2rgb(color.rgb);
}
// TL – buffer2
else {
tex.x = (tex.x - 0.667) * 3.0;
tex.y = (tex.y - 0.667) * 3.0;
color = IMG_NORM_PIXEL(buffer2, tex);
color.rgb = rgb2hsv(color.rgb);
color.r = mod(color.r + 2.0 * hueShift, 1.0);
color.rgb = hsv2rgb(color.rgb);
}
}
// BL - buffer3
else if (tex.y > 0.333) {
if (tex.x < 0.333) {
tex.x = tex.x * 3.0;
tex.y = (tex.y - 0.333) * 3.0;
color = IMG_NORM_PIXEL(buffer3, tex);
color.rgb = rgb2hsv(color.rgb);
color.r = mod(color.r + 3.0 * hueShift, 1.0);
color.rgb = hsv2rgb(color.rgb);
}
// TM – buffer1
else if ((tex.x > 0.333) && (tex.x < 0.667)) {
tex.x = (tex.x - 0.333) * 3.0;
tex.y = (tex.y - 0.333) * 3.0;
color = IMG_NORM_PIXEL(buffer4, tex);
color.rgb = rgb2hsv(color.rgb);
color.r = mod(color.r + 4.0 * hueShift, 1.0);
color.rgb = hsv2rgb(color.rgb);
}
// TL – buffer2
else {
tex.x = (tex.x - 0.667) * 3.0;
tex.y = (tex.y - 0.333) * 3.0;
color = IMG_NORM_PIXEL(buffer5, tex);
color.rgb = rgb2hsv(color.rgb);
color.r = mod(color.r + 5.0 * hueShift, 1.0);
color.rgb = hsv2rgb(color.rgb);
}
}
else {
if (tex.x < 0.333) {
tex.x = tex.x * 3.0;
tex.y = tex.y * 3.0;
color = IMG_NORM_PIXEL(buffer6, tex);
color.rgb = rgb2hsv(color.rgb);
color.r = mod(color.r + 6.0 * hueShift, 1.0);
color.rgb = hsv2rgb(color.rgb);
}
// TM – buffer1
else if ((tex.x > 0.333) && (tex.x < 0.667)) {
tex.x = (tex.x - 0.333) * 3.0;
tex.y = tex.y * 3.0;
color = IMG_NORM_PIXEL(buffer7, tex);
color.rgb = rgb2hsv(color.rgb);
color.r = mod(color.r + 7.0 * hueShift, 1.0);
color.rgb = hsv2rgb(color.rgb);
}
// TL – buffer2
else {
tex.x = (tex.x - 0.667) * 3.0;
tex.y = tex.y * 3.0;
color = IMG_NORM_PIXEL(buffer8, tex);
color.rgb = rgb2hsv(color.rgb);
color.r = mod(color.r + 8.0 * hueShift, 1.0);
color.rgb = hsv2rgb(color.rgb);
}
}
gl_FragColor = color;
}
}
