Library for capturing screenshots in OpenGL.
See [examples/basic.rs] for a complete example.
rust
let img = unsafe { gl_capture::capture() };
// img.size: (u32, u32)
// img.data: Vec<capture_gl::Rgb>
// Now use e.g. `png` or `image` crate to save the image data to a file
Alternatively, use [capture_into()] to reuse the same image data, instead
of reallocating on every call.
rust
let mut img = gl_capture::RgbImageData::new(size);
unsafe {
gl_capture::capture_into(&mut img);
}
// img.size: (u32, u32)
// img.data: Vec<capture_gl::Rgb>
Also supports other formats, e.g. [RgbaImageData], [BgrImageData], [BgraImageData].
When manually using gl::ReadPixels(), instead it is also possible to use
[read_pixels()] or [read_pixels_ptr()], which performs some additional checks
and setup.
```rust let format = glcapture::CaptureFormat::Rgb; let mut data = format.allocatepixel_data(size);
unsafe { glcapture::readpixels((0, 0), size, format, &mut data); } ```