1 files changed, 0 insertions, 90 deletions
diff --git a/shaders/subpixel.glsl b/shaders/subpixel.glsl
deleted file mode 100644
index df65b91..0000000
--- a/shaders/subpixel.glsl
+++ /dev/null
@@ -1,90 +0,0 @@
-#version 330 core
-
-// --------------------------------------------------------------------------------
-// Basic subpixel rendering with LCD filtering.
-// Assumes R-G-B LCD with no compositor scaling
-//
-// ref: https://www.shadertoy.com/view/NtVXWc (spinning quad)
-//
-// SPDX-License-Identifier: 0BSD
-// --------------------------------------------------------------------------------
-
-// --------------------------------------------------------------------------------
-// Uniforms
-// --------------------------------------------------------------------------------
-uniform float u_time;
-uniform vec2  u_res;
-uniform vec2  u_quad;
-
-// --------------------------------------------------------------------------------
-// Vertex outputs
-// --------------------------------------------------------------------------------
-in vec2 v_p;
-in vec2 v_t;
-
-// --------------------------------------------------------------------------------
-// Fragment outputs
-// --------------------------------------------------------------------------------
-out vec4 f_c;
-
-// --------------------------------------------------------------------------------
-// Entry point
-// --------------------------------------------------------------------------------
-
-vec2 rotate(vec2 v, float theta)
-{
-  // ref: https://en.wikipedia.org/wiki/Rotation_matrix
-  return mat2(cos(theta), -sin(theta), sin(theta), cos(theta)) * v;
-}
-
-float box_d(vec2 v)
-{
-  return max(v.x, v.y);
-}
-
-float spinning_quad(vec2 pos)
-{
-  pos = rotate(pos, u_time * -0.25f);
-  vec2 halfsize = u_quad / 2.0f;
-  vec2 q = abs(pos) - halfsize;
-  return 1.0f - step(0.0f, box_d(q));
-}
-
-vec3 spinning_quad_subpixel(vec2 pos)
-{
-  vec2 one_third_x = vec2(1.0f / 3.0f, 0.0f);
-
-  float sL = spinning_quad(pos - one_third_x);
-  float sC = spinning_quad(pos);
-  float sR = spinning_quad(pos + one_third_x);
-
-#if 1
-  // 3-tap low pass filter
-  float weights[3] = float[3](0.25f, 0.50f, 0.25f);
-  float r = weights[1] * sL + weights[0] * sC;
-  float g = weights[0] * sL + weights[1] * sC + weights[2] * sR;
-  float b = weights[0] * sC + weights[1] * sR;
-
-  r *= (1.0f / 0.75f);
-  b *= (1.0f / 0.75f);
-#else
-  float r = sL;
-  float g = sC;
-  float b = sR;
-#endif
-
-  return vec3(r, g, b);
-}
-
-void main()
-{
-  vec2 cursor = gl_FragCoord.xy - (u_res / 2.0f);
-
-  // top quad
-  vec3 c1 = vec3(spinning_quad(cursor - vec2(0, u_res.y / 4.0f)));
-
-  // bottom quad
-  vec3 c2 = spinning_quad_subpixel(cursor + vec2(0, u_res.y / 4.0f));
-
-  f_c = vec4(mix(c2, c1, step(u_res.y / 2.0f, gl_FragCoord.y)), 1.0f);
-}