82 lines
1.7 KiB
Rust
82 lines
1.7 KiB
Rust
#![no_std]
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extern crate alloc;
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use alloc::{boxed::Box, vec, vec::Vec};
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use engine_internals::engine_startup;
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use pixel_format::{Rgba64, RGBA};
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// use core::fmt::Result;
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use core::result::Result;
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use rhai::{EvalAltResult, Scope};
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mod engine_internals;
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pub mod pixel_format;
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pub const SHADER: &str = include_str!("../shaders/simple.shade");
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pub fn rhai_test() -> Result<Vec<RGBA>, Box<EvalAltResult>>
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// ^^^^^^^^^^^^^^^^^^
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// Rhai API error type
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{
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// Create an 'Engine'
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let engine = engine_startup();
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let ast = engine.compile(SHADER)?;
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let mut scope = Scope::new();
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let a = vec![
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RGBA {
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r: 255,
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g: 0,
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b: 0,
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a: 0,
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},
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RGBA {
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r: 0,
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g: 255,
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b: 0,
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a: 0,
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},
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RGBA {
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r: 0,
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g: 0,
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b: 255,
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a: 0,
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},
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RGBA {
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r: 0,
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g: 0,
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b: 0,
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a: 255,
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},
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];
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let mut result_rgba = vec![];
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for pixel in a {
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/*
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scope.push("PIXEL_X", 0);
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scope.push("PIXEL_Y", index);
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*/
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scope.push("PIXEL_RGBA", pixel);
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let result: RGBA = engine.call_fn(&mut scope, &ast, "main", ())?;
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result_rgba.push(result);
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}
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// Done!
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Ok(result_rgba)
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}
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pub fn evaluate_shader(pixel: u8) -> Result<Rgba64, Box<EvalAltResult>> {
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let engine = engine_startup();
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let ast = engine.compile(SHADER)?;
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let mut scope = Scope::new();
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scope.push("PIXEL_RGBA", pixel);
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let result: RGBA = engine.call_fn(&mut scope, &ast, "main", ())?;
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Ok(8)
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}
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