From 1b6a04ca5504955c571d1c97504fb45ea0befee4 Mon Sep 17 00:00:00 2001
From: Valentin Popov <valentin@popov.link>
Date: Mon, 8 Jan 2024 01:21:28 +0400
Subject: Initial vendor packages
Signed-off-by: Valentin Popov <valentin@popov.link>
---
vendor/exr/examples/0a_write_rgba.rs | 36 ++++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
create mode 100644 vendor/exr/examples/0a_write_rgba.rs
(limited to 'vendor/exr/examples/0a_write_rgba.rs')
diff --git a/vendor/exr/examples/0a_write_rgba.rs b/vendor/exr/examples/0a_write_rgba.rs
new file mode 100644
index 0000000..daa4fcd
--- /dev/null
+++ b/vendor/exr/examples/0a_write_rgba.rs
@@ -0,0 +1,36 @@
+extern crate exr;
+
+
+/// `exr` offers a few simplified functions for the most basic use cases.
+/// `write_rgb_f32_file` is a such a function, which writes a plain rgba exr file.
+///
+/// To write your image data, you need to specify how to retrieve a single pixel from it.
+/// The closure may capture variables or generate data on the fly.
+fn main() {
+ use exr::prelude::*;
+
+ // write a file, with 32-bit float precision per channel
+ write_rgba_file(
+
+ // this accepts paths or &str
+ "minimal_rgba.exr",
+
+ // image resolution is 2k
+ 2048, 2048,
+
+ // generate (or lookup in your own image)
+ // an f32 rgb color for each of the 2048x2048 pixels
+ // (you could also create f16 values here to save disk space)
+ |x,y| {
+ (
+ x as f32 / 2048.0, // red
+ y as f32 / 2048.0, // green
+ 1.0 - (y as f32 / 2048.0), // blue
+ 1.0 // alpha
+ )
+ }
+
+ ).unwrap();
+
+ println!("created file minimal_rgb.exr");
+}
\ No newline at end of file
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