From 8a2e1006b3b272126332aa064f3ad95387129544 Mon Sep 17 00:00:00 2001
From: Biswakalyan Bhuyan <biswa@surgot.in>
Date: Thu, 13 Feb 2025 14:13:49 +0530
Subject: new dot files

---
 .config/cava/config                       |  4 +-
 .config/cava/shaders/bar_spectrum.frag    | 79 +++++++++++++++++++++++++++++++
 .config/cava/shaders/northern_lights.frag | 34 +++++++++++++
 .config/cava/shaders/pass_through.vert    | 14 ++++++
 4 files changed, 129 insertions(+), 2 deletions(-)
 create mode 100644 .config/cava/shaders/bar_spectrum.frag
 create mode 100644 .config/cava/shaders/northern_lights.frag
 create mode 100644 .config/cava/shaders/pass_through.vert

(limited to '.config/cava')

diff --git a/.config/cava/config b/.config/cava/config
index 3b52728..a66a7a8 100644
--- a/.config/cava/config
+++ b/.config/cava/config
@@ -59,8 +59,8 @@
 # For alsa 'source' will be the capture device.
 # For fifo 'source' will be the path to fifo-file.
 # For shmem 'source' will be /squeezelite-AA:BB:CC:DD:EE:FF where 'AA:BB:CC:DD:EE:FF' will be squeezelite's MAC address
-; method = pulse
-; source = auto
+method = pulse
+source = auto
 
 ; method = alsa
 ; source = hw:Loopback,1
diff --git a/.config/cava/shaders/bar_spectrum.frag b/.config/cava/shaders/bar_spectrum.frag
new file mode 100644
index 0000000..b078913
--- /dev/null
+++ b/.config/cava/shaders/bar_spectrum.frag
@@ -0,0 +1,79 @@
+#version 330
+
+in vec2 fragCoord;
+out vec4 fragColor;
+
+// bar values. defaults to left channels first (low to high), then right (high to low).
+uniform float bars[512];
+
+uniform int bars_count;    // number of bars (left + right) (configurable)
+uniform int bar_width;    // bar width (configurable), not used here
+uniform int bar_spacing;    // space bewteen bars (configurable)
+
+uniform vec3 u_resolution; // window resolution
+
+//colors, configurable in cava config file (r,g,b) (0.0 - 1.0)
+uniform vec3 bg_color; // background color
+uniform vec3 fg_color; // foreground color
+
+uniform int gradient_count;
+uniform vec3 gradient_colors[8]; // gradient colors
+
+vec3 normalize_C(float y,vec3 col_1, vec3 col_2, float y_min, float y_max)
+{
+    //create color based on fraction of this color and next color
+    float yr = (y - y_min) / (y_max - y_min);
+    return col_1 * (1.0 - yr) + col_2 * yr;
+}
+
+void main()
+{
+    // find which bar to use based on where we are on the x axis
+    float x = u_resolution.x * fragCoord.x;
+    int bar = int(bars_count * fragCoord.x);
+
+    //calculate a bar size
+    float bar_size = u_resolution.x / bars_count;
+
+    //the y coordinate and bar values are the same
+    float y =  bars[bar];
+
+    // make sure there is a thin line at bottom
+    if (y * u_resolution.y < 1.0)
+    {
+      y = 1.0 / u_resolution.y;
+    }
+
+    //draw the bar up to current height
+    if (y > fragCoord.y)
+    {
+        //make some space between bars basen on settings
+        if (x > (bar + 1) * (bar_size) - bar_spacing)
+        {
+            fragColor = vec4(bg_color,1.0);
+        }
+        else
+        {
+            if (gradient_count == 0)
+            {
+                fragColor = vec4(fg_color,1.0);
+            }
+            else
+            {
+                //find which color in the configured gradient we are at
+                int color = int((gradient_count - 1) * fragCoord.y);
+
+                //find where on y this and next color is supposed to be
+                float y_min = color / (gradient_count - 1.0);
+                float y_max = (color + 1.0) / (gradient_count - 1.0);
+
+                //make color
+                fragColor = vec4(normalize_C(fragCoord.y, gradient_colors[color], gradient_colors[color + 1], y_min, y_max), 1.0);
+            }
+        }
+    }
+    else
+    {
+        fragColor = vec4(bg_color,1.0);
+    }
+}
\ No newline at end of file
diff --git a/.config/cava/shaders/northern_lights.frag b/.config/cava/shaders/northern_lights.frag
new file mode 100644
index 0000000..ecd859a
--- /dev/null
+++ b/.config/cava/shaders/northern_lights.frag
@@ -0,0 +1,34 @@
+#version 330
+
+in vec2 fragCoord;
+out vec4 fragColor;
+
+// bar values. defaults to left channels first (low to high), then right (high to low).
+uniform float bars[512];
+
+uniform int bars_count;    // number of bars (left + right) (configurable)
+
+uniform vec3 u_resolution; // window resolution, not used here
+
+//colors, configurable in cava config file
+uniform vec3 bg_color; // background color(r,g,b) (0.0 - 1.0), not used here
+uniform vec3 fg_color; // foreground color, not used here
+
+void main()
+{
+    // find which bar to use based on where we are on the x axis
+    int bar = int(bars_count * fragCoord.x);
+
+    float bar_y = 1.0 - abs((fragCoord.y - 0.5)) * 2.0;
+    float y = (bars[bar]) * bar_y;
+
+    float bar_x = (fragCoord.x - float(bar) / float(bars_count)) * bars_count;
+    float bar_r = 1.0 - abs((bar_x - 0.5)) * 2;
+
+    bar_r = bar_r * bar_r * 2;
+
+    // set color
+    fragColor.r = fg_color.x * y * bar_r;
+    fragColor.g = fg_color.y * y * bar_r;
+    fragColor.b = fg_color.z * y * bar_r;
+}
diff --git a/.config/cava/shaders/pass_through.vert b/.config/cava/shaders/pass_through.vert
new file mode 100644
index 0000000..a4f20e5
--- /dev/null
+++ b/.config/cava/shaders/pass_through.vert
@@ -0,0 +1,14 @@
+#version 330
+
+
+// Input vertex data, different for all executions of this shader.
+layout(location = 0) in vec3 vertexPosition_modelspace;
+
+// Output data ; will be interpolated for each fragment.
+out vec2 fragCoord;
+
+void main()
+{
+    gl_Position =  vec4(vertexPosition_modelspace,1);
+    fragCoord  = (vertexPosition_modelspace.xy+vec2(1,1))/2.0;
+}
-- 
cgit v1.2.3-59-g8ed1b