55 lines
1.5 KiB
Rust
55 lines
1.5 KiB
Rust
use core::ptr;
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use alloc::vec::Vec;
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use super::color::Color3;
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/// NOTE: Assumes the layout of RGBA
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pub struct FrameBuffer {
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pub width: u32,
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pub height: u32,
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pub data: Vec<u32>,
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}
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impl FrameBuffer {
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pub fn new(width: u32, height: u32) -> Self {
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let data = vec![0; (width * height) as usize];
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FrameBuffer {
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width,
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height,
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data,
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}
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}
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/// WARNING: Slow
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pub fn set_pixel(&mut self, x: u32, y: u32, color: u32) {
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let index = (y * self.width + x) as usize;
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self.data[index] = color;
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}
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/// WARNING: Slow
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pub fn get_pixel(&self, x: u32, y: u32) -> u32 {
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let index = (y * self.width + x) as usize;
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self.data[index]
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}
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/// Quickly writes the provided color to the whole framebuffer
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pub fn clear(&mut self, color: Color3) {
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unsafe {
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// TODO: properly clear instead of only copying red
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ptr::write_bytes(self.data.as_mut_ptr(), color.r, self.data.len());
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}
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}
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// TODO(Able): Test preformance of clear2
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#[allow(dead_code)]
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fn clear2(&mut self, color: u32) {
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self.data.fill(color);
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}
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/// Check the size of one framebuffer vs the other.
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/// NOTE: Just because this returns false does not mean that something is wrong
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/// there are cases that this makes sense
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pub fn check_size(&self, other: &FrameBuffer) -> bool {
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self.width == other.width && self.height == other.height
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}
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}
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