initial commit

shaders/wave/1.frag

@@ -0,0 +1,24 @@
+
+layout(pixel_center_integer) in vec4 gl_FragCoord;
+
+#request uniform "screen" screen
+uniform ivec2     screen; /* screen dimensions */
+
+#request uniform "audio_l" audio_l
+#request transform audio_l "window"
+#request transform audio_l "wrange"
+uniform sampler1D audio_l;
+
+out vec4 fragment;
+
+#include "settings.glsl"
+
+void main() {
+    float os = ((texture(audio_l, gl_FragCoord.x / screen.x).r - 0.5) * AMPLIFY) + 0.5f;
+    float s = (os + (screen.y * 0.5f) - 0.5f); /* center to screen coords */
+    if (abs(s - gl_FragCoord.y) < clamp(abs(s - (screen.y * 0.5)) * 6, MIN_THICKNESS, MAX_THICKNESS)) {
+        fragment = BASE_COLOR + (abs((screen.y * 0.5f) - s) * 0.02);
+    } else {
+        fragment = vec4(0, 0, 0, 0);
+    }
+}

shaders/wave/2.frag

@@ -0,0 +1,26 @@
+
+layout(pixel_center_integer) in vec4 gl_FragCoord;
+
+#request uniform "prev" tex
+uniform sampler2D tex;    /* screen texture    */
+#request uniform "screen" screen
+uniform ivec2     screen; /* screen dimensions */
+
+out vec4 fragment; /* output */
+
+void main() {
+    fragment = texture(tex, vec2(gl_FragCoord.x / screen.x, gl_FragCoord.y / screen.y));
+    
+    float a0 = texture(tex, vec2((gl_FragCoord.x + 1) / screen.x, (gl_FragCoord.y + 0) / screen.y)).a;
+    float a1 = texture(tex, vec2((gl_FragCoord.x + 1) / screen.x, (gl_FragCoord.y + 1) / screen.y)).a;
+    float a2 = texture(tex, vec2((gl_FragCoord.x + 0) / screen.x, (gl_FragCoord.y + 1) / screen.y)).a;
+    float a3 = texture(tex, vec2((gl_FragCoord.x + 1) / screen.x, (gl_FragCoord.y + 0) / screen.y)).a;
+    
+    float a4 = texture(tex, vec2((gl_FragCoord.x - 1) / screen.x, (gl_FragCoord.y - 0) / screen.y)).a;
+    float a5 = texture(tex, vec2((gl_FragCoord.x - 1) / screen.x, (gl_FragCoord.y - 1) / screen.y)).a;
+    float a6 = texture(tex, vec2((gl_FragCoord.x - 0) / screen.x, (gl_FragCoord.y - 1) / screen.y)).a;
+    float a7 = texture(tex, vec2((gl_FragCoord.x - 1) / screen.x, (gl_FragCoord.y - 0) / screen.y)).a;
+
+    float avg = (a0 + a1 + a2 + a3 + a4 + a5 + a6 + a7) / 8.0;
+    fragment *= avg;
+}

shaders/wave/settings.glsl

@@ -0,0 +1,4 @@
+#define MIN_THICKNESS 1
+#define MAX_THICKNESS 10
+#define BASE_COLOR vec4(0.7, 0.2, 0.45, 1)
+#define AMPLIFY 500