new ui, control panel kinda works, display works, framebuffer works, serial write works. widget for registers works. next is serial input and the editor

2026-03-13 04:30:32 +00:00
parent 6da473c272
commit e1705efe7c
46 changed files with 1470 additions and 1613 deletions
@@ -0,0 +1,137 @@
+use egui::Vec2;
+
+use crate::{MemoryBank, Page, backend::memory::PhysAddr};
+
+use super::Component;
+
+pub struct FrameBuffer {
+    width: usize,
+    height: usize,
+    addr: PhysAddr,
+    mem: MemoryBank,
+    pub buffer: Vec<u32>, // RGBA pixels
+    visible: bool,
+
+    texture: Option<egui::TextureHandle>,
+}
+
+impl FrameBuffer {
+    pub fn new(width: u32, height: u32, addr: PhysAddr, mem: MemoryBank) -> Self {
+        Self {
+            width: width as usize,
+            height: height as usize,
+            addr,
+            mem,
+            buffer: vec![0u32; width as usize * height as usize],
+            visible: true,
+
+            texture: None,
+        }
+    }
+
+    pub fn width(&self) -> usize {
+        self.width
+    }
+    pub fn height(&self) -> usize {
+        self.height
+    }
+    pub fn visible(&mut self) -> &mut bool {
+        &mut self.visible
+    }
+
+    fn internal_read(&self) -> Vec<u32> {
+        let byte_size = self.width * self.height * 4;
+        let page_count = byte_size.div_ceil(Page::SIZE);
+
+        (0..page_count)
+            .map(|i| {
+                let page = self.mem.read_page(self.addr + i as u32 * 4096);
+                page.as_slice().to_owned()
+            })
+            .flatten()
+            .take(byte_size)
+            .collect::<Vec<u8>>()
+            .chunks_exact(4)
+            .map(|chunk| u32::from_le_bytes(chunk.try_into().unwrap()))
+            .collect()
+    }
+
+    pub fn changed(&mut self) -> bool {
+        let temp = self.internal_read();
+        if temp != self.buffer {
+            self.buffer = temp;
+            return true;
+        }
+        false
+    }
+
+    pub fn read(&self) -> &[u32] {
+        &self.buffer
+    }
+
+    /// Convert buffer to RGBA bytes for use with egui/wgpu textures
+    pub fn as_rgba_bytes(&self) -> Vec<u8> {
+        self.buffer
+            .iter()
+            .flat_map(|&pixel| pixel.to_le_bytes())
+            .collect()
+    }
+}
+
+impl Component for FrameBuffer {
+    fn title(&self) -> &str {
+        "Framebuffer"
+    }
+
+    fn visible(&mut self) -> &mut bool {
+        &mut self.visible
+    }
+
+    fn ui(&mut self, ui: &mut egui::Ui, ctx: &egui::Context) {
+        let changed = self.changed();
+
+        // get or create the texture
+        let texture = self.texture.get_or_insert_with(|| {
+            ctx.load_texture(
+                "framebuffer",
+                egui::ColorImage {
+                    size: [self.width, self.height],
+                    source_size: Vec2::from([self.width as f32, self.height as f32]),
+                    pixels: vec![egui::Color32::BLACK; self.width * self.height],
+                },
+                egui::TextureOptions::NEAREST,
+            )
+        });
+
+        if changed {
+            let pixels: Vec<egui::Color32> = self
+                .buffer
+                .iter()
+                .map(|&p| {
+                    let bytes = p.to_le_bytes();
+                    egui::Color32::from_rgba_premultiplied(bytes[0], bytes[1], bytes[2], bytes[3])
+                })
+                .collect();
+
+            texture.set(
+                egui::ColorImage {
+                    size: [self.width, self.height],
+                    source_size: Vec2::from([self.width as f32, self.height as f32]),
+                    pixels,
+                },
+                egui::TextureOptions::NEAREST,
+            );
+        }
+
+        // scale to fit available space while preserving aspect ratio
+        let available = ui.available_size();
+        let aspect = self.width as f32 / self.height as f32;
+        let size = if available.x / aspect <= available.y {
+            egui::vec2(available.x, available.x / aspect)
+        } else {
+            egui::vec2(available.y * aspect, available.y)
+        };
+
+        ui.image(egui::load::SizedTexture::new(texture.id(), size));
+    }
+}