ddidderr
c548e63bd1
Ports the terminal-independent half of ZIG/src/renderer (OpenGL only): - opengl/*: buffers, frames, pipelines, render passes, samplers, targets, textures and the OpenGL GraphicsAPI backend on top of glow; the GTK GLArea glue is replaced by a get_proc_address loader closure - the GLSL shaders, copied verbatim and embedded; uniform/vertex structs as bytemuck Pod types with std140 offsets asserted in tests - shadertoy custom shaders converted with naga (GLSL in -> validate -> GLSL 430 out) instead of glslang + spirv-cross - size (screen/grid/cell/padding math), cursor style logic, backend health, options and message types The crate opts into unsafe_code = "deny"; unsafe glow calls live only in opengl/gl.rs. A headless EGL integration test builds every pipeline and the converted shadertoy shaders on Mesa and reads back rendered pixels. Note: Zig's shadertoy Uniforms order the selection background/foreground colors opposite to the GLSL block (likely an upstream bug); kept as in Zig for parity and recorded in the notes. Deferred to the next renderer pass: generic, cell, image, link, row, State, Thread, Overlay (need terminal render state). Test Plan: - cargo test -p ghostty-renderer (33 tests incl. tests/egl_headless.rs)
13 lines
232 B
GLSL
13 lines
232 B
GLSL
vec2 curve(vec2 uv)
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{
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uv = (uv - 0.5) * 2.0;
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uv *= 1.1;
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uv.x *= 1.0 + pow((abs(uv.y) / 5.0), 2.0);
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uv.y *= 1.0 + pow((abs(uv.x) / 4.0), 2.0);
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uv = (uv / 2.0) + 0.5;
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uv = uv *0.92 + 0.04;
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return uv;
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}
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// Missing mainImage!
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