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Join middle borders instead of clamping them down

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Theo Müller
2019-01-30 15:38:23 +01:00
parent f235362f44
commit 140d98b404
1 changed files with 17 additions and 3 deletions
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20
shaders/graph/1.frag
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@@ -81,16 +81,27 @@ out vec4 fragment;
#define TWOPI 6.28318530718
float half_w;
float middle;
highp float pixel = 1.0F / float(screen.x);
void render_side(in sampler1D tex, float idx) {
highp float pixel = 1.0F / float(screen.x);
float get_line_height(in sampler1D tex, float idx) {
float s = smooth_audio_adj(tex, audio_sz, idx / half_w, pixel);
/* scale the data upwards so we can see it */
s *= VSCALE;
/* clamp far ends of the screen down to make the ends of the graph smoother */
s *= clamp((abs((screen.x / 2) - gl_FragCoord.x) / screen.x) * 48, 0.0F, 1.0F);
float fact = clamp((abs((screen.x / 2) - gl_FragCoord.x) / screen.x) * 48, 0.0F, 1.0F);
fact = pow(fact, 1.8); /* To avoid spikes */
s = fact * s + (1 - fact) * middle;
s *= clamp((min(gl_FragCoord.x, screen.x - gl_FragCoord.x) / screen.x) * 48, 0.0F, 1.0F);
return s;
}
void render_side(in sampler1D tex, float idx) {
float s = get_line_height(tex, idx);
/* and finally set fragment color if we are in range */
#if INVERT > 0
float pos = float(screen.y) - gl_FragCoord.y;
@@ -106,6 +117,9 @@ void render_side(in sampler1D tex, float idx) {
void main() {
half_w = (screen.x / 2);
middle = VSCALE * (smooth_audio_adj(audio_l, audio_sz, 1, pixel) + smooth_audio_adj(audio_r, audio_sz, 0, pixel)) / 2;
if (gl_FragCoord.x < half_w) {
render_side(audio_l, LEFT_IDX);
} else {