shaders: Delete incomplete demos

1 files changed, 0 insertions, 59 deletions

diff --git a/shaders/polygon.glsl b/shaders/polygon.glsl
deleted file mode 100644
index a213f13..0000000
--- a/shaders/polygon.glsl
+++ /dev/null
@@ -1,59 +0,0 @@
-#version 330 core
-
-// --------------------------------------------------------------------------------
-// Regular polygon shader
-//
-// ref: https://thndl.com/square-shaped-shaders.html
-// ref: https://thebookofshaders.com/07/
-//
-// SPDX-License-Identifier: 0BSD
-// --------------------------------------------------------------------------------
-
-// --------------------------------------------------------------------------------
-// Uniforms
-// --------------------------------------------------------------------------------
-uniform float u_time;
-uniform vec2  u_res;
-uniform int   u_n;
-uniform vec4  u_bg;
-uniform vec4  u_fg;
-
-// --------------------------------------------------------------------------------
-// Vertex outputs
-// --------------------------------------------------------------------------------
-in vec2 v_p;
-in vec2 v_t;
-
-// --------------------------------------------------------------------------------
-// Fragment outputs
-// --------------------------------------------------------------------------------
-out vec4 f_c;
-
-// --------------------------------------------------------------------------------
-// Entry point
-// --------------------------------------------------------------------------------
-
-#define PI 3.14159265359
-
-void main()
-{
-  // Centered with square aspect ratio
-  vec2 st      = gl_FragCoord.xy / u_res.xy;
-  float aspect = u_res.x / u_res.y;
-  if (aspect > 1.0f) { st.x = (st.x - 0.5f) * aspect + 0.5f; }
-  else               { st.y = (st.y - 0.5f) / aspect + 0.5f; }
-
-  // Remap [0, 1] to [-1, 1]
-  st = st * 2.0f - 1.0f;
-
-  // Angle of pixel from center + rotation
-  float a = atan(st.y, st.x) + u_time * 0.2f;
-
-  // Angle of each sector from center
-  float r = (PI * 2.0f) / float(u_n);
-
-  // Polar polygon edge test. cos(theta) = dot product.
-  float d = cos(floor(0.5f + a / r) * r - a) * length(st);
-
-  f_c = vec4(vec3(mix(u_bg, u_fg, 1.0f - step(0.5f, d))), 1.0f);
-}