36 lines
1.0 KiB
Rust
36 lines
1.0 KiB
Rust
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extern crate exr;
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/// `exr` offers a few simplified functions for the most basic use cases.
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/// `write_rgb_f32_file` is a such a function, which writes a plain rgba exr file.
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///
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/// To write your image data, you need to specify how to retrieve a single pixel from it.
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/// The closure may capture variables or generate data on the fly.
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fn main() {
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use exr::prelude::*;
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// write a file, with 32-bit float precision per channel
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write_rgba_file(
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// this accepts paths or &str
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"minimal_rgba.exr",
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// image resolution is 2k
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2048, 2048,
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// generate (or lookup in your own image)
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// an f32 rgb color for each of the 2048x2048 pixels
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// (you could also create f16 values here to save disk space)
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|x,y| {
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(
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x as f32 / 2048.0, // red
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y as f32 / 2048.0, // green
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1.0 - (y as f32 / 2048.0), // blue
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1.0 // alpha
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)
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}
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).unwrap();
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println!("created file minimal_rgb.exr");
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}
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