62d4f31b1e
Every heap ref carries its heap tag, generation checks always on, rooted async values. Splash isolates get a domain table and curated minimal preludes; system modules under `mod` expand lazily on first touch. No wall-clock script caps: isolation and force-stop instead. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
30 lines
1.4 KiB
Rust
30 lines
1.4 KiB
Rust
//! One clip-z convention on every backend: clip z runs 0..w and a depth
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//! buffer holds ndc z (Metal, D3D, Vulkan, WebGPU natively); the OpenGL
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//! backend moves its -w..w clip z there in the vertex output.
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use makepad_script::*;
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fn compile(backend: &str) -> String {
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let host = Box::leak(Box::new(ScriptVmHost::new(0i32, ())));
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let mut vm = ScriptVm {
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host: host.host_context(),
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bx: Box::new(ScriptVmBase::new()),
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};
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vm.bx.captured_errors = Some(Vec::new());
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let code = format!(
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"use mod.pod.*\nuse mod.math.*\nuse mod.shader\nlet sh = {{\nvertex_pos: shader.vertex_position(vec4f)\npixel: shader.fragment_output(0, vec4f)\n\
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vertex: fn() {{ self.vertex_pos = vec4(0.25, 0.5, 0.75, 1.0) }}\nfragment: fn() {{ self.pixel = vec4(1.0) }}\n}}\nshader.test_compile_draw_source(sh, \"{backend}\", false)"
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);
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let value = vm.with_instruction_limit(5_000_000, |vm| vm.eval(ScriptMod::new("", "", "x", 0, 0, &code, &[])));
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assert!(vm.take_errors().is_empty());
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vm.bx.heap.string_with(value, |_, s| s.to_string()).unwrap()
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}
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#[test]
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fn opengl_moves_clip_z_to_the_shared_convention() {
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let glsl = compile("glsl");
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assert!(glsl.contains("((2.0 * vtx_pos.z) - vtx_pos.w)"), "{glsl}");
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for backend in ["metal", "hlsl", "wgsl"] {
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let src = compile(backend);
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assert!(!src.contains("2.0 * vtx_pos.z"), "{backend} keeps its native 0..w clip z:\n{src}");
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}
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}
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