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