6 releases
0.3.1 | Sep 28, 2024 |
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0.3.0 | Nov 14, 2023 |
0.2.2 | Jan 3, 2023 |
0.2.1 | Aug 29, 2022 |
0.1.0 | Sep 11, 2017 |
#293 in Memory management
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Used in 14 crates
(2 directly)
15KB
365 lines
Safe libgbm
bindings for rust
The Generic Buffer Manager
This module provides an abstraction that the caller can use to request a buffer from the underlying memory management system for the platform.
This allows the creation of portable code whilst still allowing access to the underlying memory manager.
This library is best used in combination with drm-rs
,
provided through the drm-support
feature.
Usage
Add to your Cargo.toml
gbm = "0.15.0"
Example
extern crate drm;
extern crate gbm;
use drm::control::{self, crtc, framebuffer};
use gbm::{BufferObjectFlags, Device, Format};
// ... init your drm device ...
let drm = init_drm_device();
// init a GBM device
let gbm = Device::new(drm).unwrap();
// create a buffer
let mut bo = gbm
.create_buffer_object::<()>(
1280,
720,
Format::Argb8888,
BufferObjectFlags::SCANOUT | BufferObjectFlags::WRITE,
)
.unwrap();
// write something to it (usually use import or egl rendering instead)
let buffer = {
let mut buffer = Vec::new();
for i in 0..1280 {
for _ in 0..720 {
buffer.push(if i % 2 == 0 { 0 } else { 255 });
}
}
buffer
};
bo.write(&buffer).unwrap();
// create a framebuffer from our buffer
let fb = gbm.add_framebuffer(&bo, 32, 32).unwrap();
// display it (and get a crtc, mode and connector before)
gbm.set_crtc(crtc_handle, Some(fb), (0, 0), &[con], Some(mode))
.unwrap();
Dependencies
~170KB