Added new manipulative shaders

tools/src/manipulative/Video Wall.frag

@@ -0,0 +1,93 @@
+// https://www.shadertoy.com/view/MlX3Rs
+
+vec4 white = vec4(1.0,1.0,1.0,0.0);
+vec4 black = vec4(0.0,0.0,0.0,1.0);
+
+vec4 noise(vec4 c,vec2 px)
+{
+    vec2 uv = px / iResolution.xy;
+
+    vec4 r = texture(iChannel0,uv+vec2(sin(iTime*10.0),sin(iTime*20.0)));
+
+    c += r * 0.2;
+
+    return c;
+}
+
+vec4 colorFilter(vec4 c)
+{
+	float g = (c.x + c.y + c.z) / 3.0;
+    c = vec4(g,g,g,1.0);
+
+    c.x *= 0.3;
+    c.y *= 0.5;
+    c.z *= 0.7;
+
+    return c;
+}
+
+vec4 frame(vec4 c,vec2 px)
+{
+    vec2 uv = px / iResolution.xy;
+
+    float d = 0.59;
+    float e = 3.8;
+
+    c += 0.4*pow(distance(uv,vec2(0.5,0.5)) / d,e);
+
+	return c;
+}
+
+vec4 scanline(vec4 c, vec2 px)
+{
+    vec2 uv = px / iResolution.xy;
+
+    float y = mod(-iTime / 10.0,1.1);
+
+    float d = sqrt(abs(uv.y - y));
+
+    float a = 1.0 - smoothstep(0.001,0.2,d);
+
+    c = noise(noise(noise(white,px),px),px) * (a*0.5) + (c * (1.0-a));
+
+    return c;
+
+}
+
+void mainImage( out vec4 fragColor, in vec2 fragCoord )
+{
+
+	vec2 uv = fragCoord.xy / iResolution.xy;
+
+    float aspect = iResolution.x / iResolution.y;
+
+    float squares = pow((1.0 + float(int(mod(2.0+iTime / 3.5,5.0)))),2.0);
+
+    vec4 c = black;
+
+    float sw = sqrt(squares) / aspect;
+    float sh = sqrt(squares);
+
+
+    float b = float(int(mod(uv.y*sh,2.0)));
+    // a(0 || 1) selects square
+	float a = float(int(mod(uv.x*sw * aspect + b,2.0)));
+
+	// Texture coordinates
+    float vx = mod(uv.x * sw * aspect, 1.0);
+    float vy = mod(uv.y * sh*-1.0, 1.0);
+
+   	c += texture(iChannel1,vec2(vx,vy)) * (1.0-a);
+    c += texture(iChannel2,vec2(vx,vy)) * a;
+
+
+    c = noise(c,fragCoord);
+    //c = scanline(c,fragCoord);
+    c = colorFilter(c);
+
+	c = frame(c,fragCoord);
+
+    c = clamp(black,c,white);
+
+	fragColor = c;
+}