initial commit

shaders/graph/1.frag

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+
+layout(pixel_center_integer) in vec4 gl_FragCoord;
+
+#request uniform "screen" screen
+uniform ivec2 screen; /* screen dimensions */
+
+#request uniform "audio_sz" audio_sz
+uniform int audio_sz;
+
+#request setavgframes 4
+#request setavgwindow true
+// #request interpolate true
+
+#request uniform "audio_l" audio_l
+#request transform audio_l "window"
+#request transform audio_l "fft"
+#request transform audio_l "avg"
+uniform sampler1D audio_l;
+
+#request uniform "audio_r" audio_r
+#request transform audio_r "window"
+#request transform audio_r "fft"
+#request transform audio_r "avg"
+uniform sampler1D audio_r;
+
+out vec4 fragment;
+
+#include "settings.glsl"
+
+#define CUT 0.5
+#define SAMPLE_RANGE 0.2
+#define SAMPLE_AMT 22
+
+#define WSCALE 11
+#define VSCALE 6000
+
+#define DIRECTION 1
+
+#define RCOL_OFF (gl_FragCoord.x / 3000)
+#define LCOL_OFF ((screen.x - gl_FragCoord.x) / 3000)
+#define COLOR vec4(vec3(0.3 + RCOL_OFF, 0.3, 0.3 + LCOL_OFF) + (gl_FragCoord.y / 170), 1)
+
+#if DIRECTION < 0
+#define LEFT_IDX (gl_FragCoord.x)
+#define RIGHT_IDX (-gl_FragCoord.x + screen.x)
+#else
+#define LEFT_IDX (half_w - gl_FragCoord.x)
+#define RIGHT_IDX (gl_FragCoord.x - half_w)
+#endif
+
+void main() {
+    float half_w = (screen.x / 2);
+    if (gl_FragCoord.x < half_w) {
+        float s = 0, r;
+        int t;
+        for (t = -SAMPLE_AMT; t <= SAMPLE_AMT; ++t) {
+            s += (texture(audio_l, log((LEFT_IDX + (t * SAMPLE_RANGE)) / (half_w)) / WSCALE).r);
+        }
+        s /= float(SAMPLE_AMT * 2) + 1;
+        s *= VSCALE;
+    
+        if (gl_FragCoord.y + 1.5 <= s) {
+            fragment = COLOR;
+        } else {
+            fragment = vec4(0, 0, 0, 0);
+        }
+    } else {
+        float s = 0, r;
+        int t;
+        for (t = -SAMPLE_AMT; t <= SAMPLE_AMT; ++t) {
+            s += (texture(audio_r, log((RIGHT_IDX + (t * SAMPLE_RANGE)) / (half_w)) / WSCALE).r);
+        }
+        s /= float(SAMPLE_AMT * 2) + 1;
+        s *= VSCALE;
+    
+        if (gl_FragCoord.y + 1.5 <= s) {
+            fragment = COLOR;
+        } else {
+            fragment = vec4(0, 0, 0, 0);
+        }
+    }
+}

shaders/graph/2.frag

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+
+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;
+    if (gl_FragCoord.y > 1) {
+        fragment *= avg;
+    }
+}

shaders/graph/3.frag.old

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+
+layout(pixel_center_integer) in vec4 gl_FragCoord;
+
+#request uniform "screen" screen
+#request uniform "prev" tex
+
+uniform sampler2D tex;    /* screen texture    */
+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;
+
+    if (gl_FragCoord.y > 1) fragment *= avg;
+}

shaders/graph/settings.glsl

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+#define MIN_THICKNESS 1
+#define MAX_THICKNESS 12
+#define BASE_COLOR vec4(0.7, 0.2, 0.45, 1)
+#define AMPLIFY 500