ddidderr
568ce784f9
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)
30 lines
721 B
Rust
30 lines
721 B
Rust
//! Renderer backend selection (`renderer/backend.zig`).
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/// Possible implementations, used for build options.
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#[derive(Debug, Clone, Copy, PartialEq, Eq)]
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pub enum Backend {
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Opengl,
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Metal,
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Webgl,
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}
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impl Backend {
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/// The default backend for the target. Metal/WebGL are out of scope for
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/// the Rust port (Linux only), so this is always OpenGL on non-Darwin.
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pub fn default_for_target() -> Backend {
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if cfg!(target_vendor = "apple") {
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Backend::Metal
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} else {
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Backend::Opengl
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}
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}
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}
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/// The health status of a renderer (`renderer.Health`).
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#[derive(Debug, Clone, Copy, PartialEq, Eq)]
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#[repr(C)]
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pub enum Health {
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Healthy,
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Unhealthy,
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}
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