1 files changed, 0 insertions, 133 deletions
diff --git a/shaders/prebuilt/post-grain.frag.glsl b/shaders/prebuilt/post-grain.frag.glsl
deleted file mode 100644
index a4a02e99..00000000
--- a/shaders/prebuilt/post-grain.frag.glsl
+++ /dev/null
@@ -1,133 +0,0 @@
-#version 450
-// pardes's Shadertoy prefix (docs/render-pipeline.md §6), put before every
-// post pass: a bundled one in shaders/post/ at build time, a user's file at
-// run time. The uniform names, types and std140 order are ghostty 1.3.2's
-// (src/renderer/shaders/shadertoy_prefix.glsl), so a shader written for
-// ghostty runs here; only the bindings are SDL GPU's (a fragment shader's
-// textures in set 2, its uniform blocks in set 3). Y is down everywhere, as
-// on ghostty's Metal renderer: fragCoord, iChannel0's uv and the cursor
-// rectangles share one top-left space, and iCurrentCursor is (left x,
-// BOTTOM-edge y, width, height) in framebuffer pixels.
-
-layout(set = 3, binding = 0, std140) uniform Globals {
-    uniform vec3  iResolution;
-    uniform float iTime;
-    uniform float iTimeDelta;
-    uniform float iFrameRate;
-    uniform int   iFrame;
-    uniform float iChannelTime[4];
-    uniform vec3  iChannelResolution[4];
-    uniform vec4  iMouse;
-    uniform vec4  iDate;
-    uniform float iSampleRate;
-    uniform vec4  iCurrentCursor;
-    uniform vec4  iPreviousCursor;
-    uniform vec4  iCurrentCursorColor;
-    uniform vec4  iPreviousCursorColor;
-    uniform int   iCurrentCursorStyle;
-    uniform int   iPreviousCursorStyle;
-    uniform int   iCursorVisible;
-    uniform float iTimeCursorChange;
-    uniform float iTimeFocus;
-    uniform int iFocus;
-};
-// ghostty's one block, cut in three: SDL GPU binds at most 4 KiB of a
-// uniform block (Vulkan), and the palette alone is 4 KiB. The names and
-// their order are ghostty's; each block is a slice of the same memory.
-layout(set = 3, binding = 1, std140) uniform Palette {
-    uniform vec3  iPalette[256];
-};
-layout(set = 3, binding = 2, std140) uniform Colors {
-    uniform vec3  iBackgroundColor;
-    uniform vec3  iForegroundColor;
-    uniform vec3  iCursorColor;
-    uniform vec3  iCursorText;
-    uniform vec3  iSelectionForegroundColor;
-    uniform vec3  iSelectionBackgroundColor;
-};
-
-// pardes's own: pardesOpaque is 1 when the window is opaque, so a pass
-// cannot punch holes in it through its alpha; pardesLevel is a bundled
-// pass's strength, 1 to 3 (`Crt 3`), and 0 for a user's file; pardesScale
-// is the display's density (2 on a 2x screen), for a pass whose pattern is
-// in logical pixels. iResolution, fragCoord and iMouse stay in the display's
-// pixels, as ghostty's do. pardesCap is the most a bundled pass may do on
-// this theme and still leave its text, and its selection's, at their own
-// contrast or 4.5 (docs/effects.md); pardesSpare holds pardesSpareCount
-// rectangles (x0, y0, x1, y1 in fragCoord's pixels) a bundled pass leaves
-// alone: every tag, grip and notice, and the cursor, so no pass ever touches
-// a focus indicator.
-layout(set = 3, binding = 3, std140) uniform PardesPost {
-    float pardesOpaque;
-    float pardesLevel;
-    float pardesScale;
-    float pardesCap;
-    float pardesSpareCount;
-    vec4 pardesSpare[32];
-};
-
-bool pardesSpared(vec2 p) {
-    for (int i = 0; i < int(pardesSpareCount); i++) {
-        vec4 r = pardesSpare[i];
-        if (p.x >= r.x && p.y >= r.y && p.x < r.z && p.y < r.w) return true;
-    }
-    return false;
-}
-
-// A bundled pass's constant at levels 1, 2 and 3.
-float pardesByLevel(float one, float two, float three) {
-    return pardesLevel < 1.5 ? one : (pardesLevel < 2.5 ? two : three);
-}
-
-#define CURSORSTYLE_BLOCK        0
-#define CURSORSTYLE_BLOCK_HOLLOW 1
-#define CURSORSTYLE_BAR          2
-#define CURSORSTYLE_UNDERLINE    3
-#define CURSORSTYLE_LOCK         4
-
-layout(set = 2, binding = 0) uniform sampler2D iChannel0;
-
-layout(location = 0) out vec4 _fragColor;
-
-#define texture2D texture
-
-void mainImage(out vec4 fragColor, in vec2 fragCoord);
-void main() {
-    mainImage(_fragColor, gl_FragCoord.xy);
-    if (pardesOpaque > 0.5) _fragColor.a = 1.0;
-}
-
-// The shader's own lines count from 1, so glslc's errors name them.
-#line 1
-// Grain: the page's own ground takes a fine, still grain, like paper. Only
-// pixels of the page's colour (iBackgroundColor) are grained: no glyph, no
-// selection, no tag or rule, and nothing in pardesSpare. The grain averages
-// to the page, is a logical pixel big (pardesScale), and never moves, so it
-// costs no frames. At most 1.5, 3 and 5 of 255 at levels 1 to 3, and never
-// more than pardesCap, which keeps the text on it at its own contrast or 4.5.
-// It is a Shadertoy file: pardes puts its prefix before it.
-
-float amplitude() { return min(pardesByLevel(1.5, 3.0, 5.0) / 255.0, pardesCap); }
-
-// An integer hash of the grain cell: white, with no pattern to see.
-float hash(uvec2 p) {
-    uint h = p.x * 1664525u + p.y * 1013904223u;
-    h ^= h >> 16;
-    h *= 2246822519u;
-    h ^= h >> 13;
-    h *= 3266489917u;
-    h ^= h >> 16;
-    return float(h) / 4294967295.0;
-}
-
-void mainImage(out vec4 fragColor, in vec2 fragCoord) {
-    vec2 uv = fragCoord / iResolution.xy;
-    vec4 frame = texture(iChannel0, uv);
-    fragColor = frame;
-    vec3 page = iBackgroundColor.rgb;
-    if (any(greaterThan(abs(frame.rgb - page), vec3(0.75 / 255.0))) || pardesSpared(fragCoord)) return;
-    uvec2 cell = uvec2(fragCoord / max(1.0, pardesScale));
-    // Two hashes summed: a triangular spread, softer than a flat one.
-    float n = hash(cell) + hash(cell + uvec2(7919u, 104729u)) - 1.0;
-    fragColor = vec4(clamp(page + n * amplitude(), 0.0, 1.0), frame.a);
-}