PRE4

1 files changed, 41 insertions, 0 deletions

diff --git a/src/main/resources/assets/notenoughupdates/shaders/void.frag b/src/main/resources/assets/notenoughupdates/shaders/void.frag
new file mode 100644
index 00000000..3809c133
--- /dev/null
+++ b/src/main/resources/assets/notenoughupdates/shaders/void.frag
@@ -0,0 +1,41 @@
+#version 130
+
+varying vec4 passColour;
+varying vec3 passNormal;
+uniform sampler2D textureIn;
+varying vec4 passPosition;
+uniform vec2 screensize;
+uniform int millis;
+
+//Algorithm by hughsk
+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() {
+    vec2 viewportCoord1 = (gl_FragCoord.xy+vec2(-millis/100.0f, 70)/5.0f)/screensize.yy;
+    vec4 texture1 = texture2D(textureIn, viewportCoord1);
+
+    vec2 viewportCoord2 = (gl_FragCoord.xy/2.0f+vec2(50, millis/100.0f)/3.0f)/screensize.yy;
+    vec4 texture2 = texture2D(textureIn, viewportCoord2);
+
+    vec2 viewportCoord3 = (gl_FragCoord.xy/3.0f+vec2(-millis/100.0f+30, millis/100.0f+90)/2.0f)/screensize.yy;
+    vec4 texture3 = texture2D(textureIn, viewportCoord3);
+
+    vec2 viewportCoord4 = (gl_FragCoord.xy/3.0f+vec2(-millis/100.0f+50, -millis/100.0f+10)/2.0f)/screensize.yy;
+    vec4 texture4 = texture2D(textureIn, viewportCoord4);
+
+    float r = texture1.r + texture2.r + texture3.r + texture4.r;
+    float g = texture1.g + texture2.g + texture3.g + texture4.g;
+    float b = texture1.b + texture2.b + texture3.b + texture4.b;
+
+    if(r > 1) r = 1;
+    if(g > 1) g = 1;
+    if(b > 1) b = 1;
+
+    vec4 colour = vec4(hsv2rgb(vec3(mod(millis/50000.0f+gl_FragCoord.x/screensize.x/3.0f, 1.0f), 0.35f, 1.0f)), 1.0f);
+
+    gl_FragColor = vec4(r, g, b, 1) * passColour * colour;
+}
\ No newline at end of file