1 files changed, 0 insertions, 39 deletions
diff --git a/shaders/prebuilt/bloom-down.frag.glsl b/shaders/prebuilt/bloom-down.frag.glsl
deleted file mode 100644
index 3465926d..00000000
--- a/shaders/prebuilt/bloom-down.frag.glsl
+++ /dev/null
@@ -1,39 +0,0 @@
-#version 450
-
-// Bloom, down (docs/effects.md G4): one step of a dual Kawase filter, a
-// source half as big again sampled at five points, the first step over the
-// frame through a bright pass in linear light. Written to a float target.
-
-layout(set = 2, binding = 0) uniform sampler2D source;
-layout(std140, set = 3, binding = 0) uniform BloomStep {
-    // xy: a source texel; zw: a target texel.
-    vec4 texels;
-    // x: the bright pass's threshold on a channel's linear peak (above the
-    // page's own), 0 for none (a later step); y: its soft knee.
-    vec4 pass;
-} u;
-
-layout(location = 0) out vec4 o_col;
-
-vec3 toLinear(vec3 c) {
-    return mix(pow((c + 0.055) / 1.055, vec3(2.4)), c / 12.92, lessThanEqual(c, vec3(0.04045)));
-}
-
-vec3 tap(vec2 uv) {
-    vec3 c = texture(source, uv).rgb;
-    if (u.pass.x <= 0.0) return c;
-    c = toLinear(c);
-    float peak = max(c.r, max(c.g, c.b));
-    return c * smoothstep(u.pass.x, u.pass.x + u.pass.y, peak);
-}
-
-void main() {
-    vec2 uv = gl_FragCoord.xy * u.texels.zw;
-    vec2 h = 0.5 * u.texels.xy;
-    vec3 sum = tap(uv) * 4.0;
-    sum += tap(uv - h);
-    sum += tap(uv + h);
-    sum += tap(uv + vec2(h.x, -h.y));
-    sum += tap(uv - vec2(h.x, -h.y));
-    o_col = vec4(sum / 8.0, 1.0);
-}