scripts reorganize

scripts/hypr-shaders/rainbow.frag

@@ -0,0 +1,19 @@
+//modified version of [this shader](https://github.com/wessles/GLSL-CRT/blob/master/shader.frag)
+#version 300 es
+
+precision mediump float;
+in vec2 v_texcoord;
+uniform sampler2D tex;
+out vec4 FragColor;
+
+const float scaleFactor = 0.7;
+
+// [0,1]
+void main() {
+	vec4 cta = texture(tex, v_texcoord);
+
+  // cta += vec4(cos(v_texcoord.x)/4., sin(v_texcoord.y)/4., 0., 1.);
+  cta += vec4(cos(v_texcoord.x)/4., cos(v_texcoord.y)/8., sin(v_texcoord.y)/4., 1.);
+
+	FragColor = vec4(clamp(cta.x, 0., 1.), clamp(cta.y, 0., 1.), clamp(cta.z, 0., 1.), clamp(cta.w, 0., 1.));
+}