From c6a5aaf5c4a020eaefe24943ecb6cf9d4eb26836 Mon Sep 17 00:00:00 2001 From: Gabriel Schneider Date: Mon, 28 Sep 2026 15:57:22 -0300 Subject: Post chain: Shadertoy passes compiled by glslc; Crt, Ripple and Glitch rewritten as Shadertoy files Stage 9 of docs/render-pipeline.md. src/gui/Post.zig runs the chain over the finished frame: each pass reads the one before, ping-pong textures between, the last writes the window; an empty chain is the direct path. The prefix (shaders/post/prefix.glsl) is ghostty's uniform block, name for name and offset for offset (tested against a copy of its Uniforms, the selection colours by their GLSL names), at SDL GPU's bindings, y down. A user's file (Shader ) is compiled by glslc with compileGlsl's own flags on a thread of its own, taken in at the next loop step; errors name the file's own lines; a failed compile keeps the last good pipeline; glslc missing is said once. The bundled passes compile with the build, through the same prefix. Crt, Ripple and Glitch are Shadertoy files, rewritten: no barrel (input is identity, tested), everything in linear light and dithered, keyed to iTime. scene_effects, crt.zig and crt.frag.glsl are gone; the core keeps no clock for the chain. ShaderAnimation off|on|always drives redraw level A: the chain alone over the retained frame (34 us CPU a redraw, measured). Shared files touched: pardes.zig (nextWake loses the scene line, disableSceneEffects empties the chain, two tests), builtins.zig (one switch arm), ninep/ctl.zig (two switch arms), macos.zig (flags from the chain), gui.zig. Not touched: Messages.zig, mouse.zig, detached/*, host_io, tty. --- src/builtins.zig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/builtins.zig') diff --git a/src/builtins.zig b/src/builtins.zig index 6bfc9b26..1864086f 100644 --- a/src/builtins.zig +++ b/src/builtins.zig @@ -156,7 +156,7 @@ pub const registry = struct { if (@intFromEnum(b) == i) return switch (setting.action) { // a switch flips bare, and DumpDir bare is the default .toggle, .transition, .scene, .dump_dir => false, - .shell, .theme, .font, .tagline_size, .window_opacity, .window_blur, .message_ms => true, + .shell, .theme, .font, .tagline_size, .window_opacity, .window_blur, .message_ms, .shader, .shader_animation => true, }; unreachable; } -- cgit v1.3