Pixel

README.md

@@ -11,9 +11,13 @@ Install [Qemu](https://www.qemu.org/)
 
 `cargo install bootimage`
 
-## Srange workarounds
-- arm/build.rs has to move main.rs
-- conditional dependencies for bootloader are broken 
+
+## Running
+repbuild can be used to run and build docs for able os
+
+`cargo repbuild doc`
+`cargo repbuild run`
+
 ## Testing on real hardware
 I recommend using an old x86_64 computer
 * `cargo run --release` to generate a binary image that is bootable

ableos/Cargo.lock

@@ -36,7 +36,6 @@ dependencies = [
  "log",
  "pic8259",
  "pretty-hex",
- "qoi_rs",
  "shadeable",
  "spin",
  "uart_16550",
@@ -78,9 +77,9 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
 name = "bootloader"
-version = "0.9.20"
+version = "0.9.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6b0718f186cd449b21f044683933284ed90fb83f3e13949ff0e03b0b6f02e38e"
+checksum = "a62c8f6168cd106687ee36a2b71a46c4144d73399f72814104d33094b8092fd2"
 
 [[package]]
 name = "cfg-if"
@@ -333,12 +332,6 @@ dependencies = [
  "unicode-xid",
 ]
 
-[[package]]
-name = "qoi_rs"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f7ac44f12a8cec33865a699b2257e8454499fb4c3b13835710ff35c66bb65669"
-
 [[package]]
 name = "quote"
 version = "1.0.14"
@@ -386,7 +379,9 @@ checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 name = "shadeable"
 version = "0.1.0"
 dependencies = [
+ "libm",
  "rhai",
+ "vga",
 ]
 
 [[package]]
@@ -453,9 +448,9 @@ checksum = "4ccbe8381883510b6a2d8f1e32905bddd178c11caef8083086d0c0c9ab0ac281"
 
 [[package]]
 name = "uart_16550"
-version = "0.2.15"
+version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "65ad019480ef5ff8ffe66d6f6a259cd87cf317649481394981db1739d844f374"
+checksum = "af81448a9a53c7b0f66198381f80912fd18f2c8965f9da4319e6f92e740bca5b"
 dependencies = [
  "bitflags",
  "x86_64",

ableos/Cargo.toml

@@ -13,6 +13,9 @@ run-args = [
     "stdio",
     "-smp",
     "cores=2",
+    # "-device",
+    # "virtio-gpu",
+
     "-device",
     "virtio-blk-pci,drive=drive0,id=virtblk0,num-queues=4",
     "-drive",
@@ -28,13 +31,16 @@ test-args = [
 [dependencies]
 linked_list_allocator = "0.9.0"
 lliw = "0.2.0"
-qoi_rs = "*"
+# qoi_rs = "*"
 spin = "0.5.2"
 vga = "*"
-pretty-hex = "0.2.1"
 log= "*"
-[dependencies.shadeable]
+pretty-hex = "0.2.1"
 
+
+
+
+[dependencies.shadeable]
 path = "../shadeable"
 
 

ableos/notes/pci_tree.md

@@ -0,0 +1,17 @@
+
+VGA
+
+
+
+ 
+
+
+
+
+
+pcie
+    gpu
+        amd
+            ati
+                set_red
+    ssd

ableos/src/arch/x86_64/mod.rs

@@ -28,7 +28,7 @@ pub fn start(boot_info: &'static BootInfo) -> ! {
     }
 
     allocator::init_heap(&mut mapper, &mut frame_allocator).expect("heap initialization failed");
-    // info!("{:?}", boot_info);
+
     crate::kmain::kernel_main();
 }
 

ableos/src/experiments/absi.rs

@@ -2,6 +2,8 @@ use crate::{
     arch::drivers::vga::{set_vga_color, Color},
     kprint,
 };
+
+// TODO improve tokenizer/parser
 pub fn colorify(eval: &str) {
     let y = eval.split("$");
     for z in y {

ableos/src/graphics/mod.rs

@@ -0,0 +1,73 @@
+use alloc::{boxed::Box, vec, vec::Vec};
+use shadeable::pixel_format::{new_rgba64, Rgba64};
+use vga::{colors::Color16, writers::GraphicsWriter};
+
+use crate::vga_e::VGAE;
+
+#[derive(Debug)]
+pub struct ScreenSize {
+    pub x: usize,
+    pub y: usize,
+}
+impl ScreenSize {
+    pub fn new(x: usize, y: usize) -> Self {
+        Self { x, y }
+    }
+}
+
+pub enum GraphicsReturn {
+    Ok,
+    ImproperScreenSize,
+}
+
+pub struct ScreenBuffer {
+    pub size: ScreenSize,
+    pub clear_color: Rgba64,
+    pub buff: Box<[Rgba64]>, // Vec<Rgba64>,
+}
+
+impl ScreenBuffer {
+    // Add optional size later
+    pub fn new(x: usize, y: usize) -> Self {
+        Self {
+            size: ScreenSize::new(x, y),
+            clear_color: 0,
+            buff: vec![0u64; x * y].into_boxed_slice(),
+        }
+    }
+    #[inline]
+    pub fn set_pixel(&mut self, x: usize, y: usize, color: Rgba64) {
+        self.buff[y * self.size.y + x] = color;
+    }
+
+    pub fn clear(&mut self) {
+        self.buff = vec![0u64; self.buff.len()].into_boxed_slice();
+    }
+
+    pub fn blit(&mut self, _width: usize, _height: usize) {}
+}
+pub trait VgaBuffer {
+    fn copy_to_buffer(&self) -> GraphicsReturn;
+}
+impl VgaBuffer for ScreenBuffer {
+    fn copy_to_buffer(&self) -> GraphicsReturn {
+        let mode = VGAE.lock();
+
+        /*
+        if self.size.y * 640 + self.size.x > 640 * 480 {
+            return GraphicsReturn::ImproperScreenSize;
+        }
+
+        */
+
+        for y in 0..self.size.y {
+            for x in 0..self.size.x {
+                use shadeable::pixel_format::into_vga_16;
+                let vga_color = into_vga_16(self.buff[y * self.size.y + x]);
+                mode.set_pixel(x, y, vga_color);
+            }
+        }
+
+        GraphicsReturn::Ok
+    }
+}

ableos/src/kmain.rs

@@ -1,13 +1,15 @@
 #![allow(clippy::empty_loop)]
 
-use alloc::{fmt, format};
-use shadeable::rhai_test;
+// use std::println;
+
+use alloc::format;
+
+use shadeable::pixel_format::{into_vga_16, new_rgba64};
 use vga::{colors::Color16, writers::GraphicsWriter};
 
 use crate::{
-    logger,
-    relib::network::socket::SocketReturns,
-    unicode_utils,
+    graphics::VgaBuffer,
+    relib::network::socket::{SimpleSock, SocketReturns},
     vga_e::{self, VGAE},
 };
 
@@ -21,6 +23,8 @@ use {
             info::master,
             systeminfo::{KERNEL_VERSION, RELEASE_TYPE},
         },
+
+        graphics::ScreenBuffer,
         // log::LOG_STATE,
         relib::math::rand::RAND_HANDLE,
         relib::network::socket::Socket,
@@ -51,34 +55,27 @@ lazy_static! {
 pub fn kernel_main() -> ! {
     init::init();
 
-    log::set_max_level(LevelFilter::Info);
+    log::set_max_level(LevelFilter::Trace);
+    // crate::wasm::evaluate();
 
-    {
-        let mut a_thread = Thread::new();
+    let mut abcde = ScreenBuffer::new(480, 640);
+    // abcde.clear();
+    // abcde.copy_to_buffer();
+    VGAE.lock().clear_screen(Color16::Black);
 
-        a_thread.new_task(test_fn);
-        a_thread.new_task(test_fn);
-        THREAD_LIST.lock().push(a_thread);
-        GraphicsBuffer::draw();
-        GraphicsBuffer::hide_cursor();
-    }
+    trace!("length of screen buffer {}", abcde.buff.len());
+    trace!("Screen size {:?}", abcde.size);
 
-    crate::wasm::evaluate();
-    {
-        info!("{} v{}", RELEASE_TYPE, KERNEL_VERSION);
-        info!(
-            "Brand String: {:?}",
-            master().unwrap().brand_string().unwrap()
-        );
-        if false {
-            println!("$PINK$Hi$RED$ from$GREEN$ able!$RESET$");
-            println!("$RED$hi$RESET$");
+    abcde.set_pixel(10, 10, new_rgba64(255, 0, 0, 255));
+    for y in 30..60 {
+        for x in 1..=639 {
+            abcde.set_pixel(x, y, new_rgba64(255, 255, 8, 255));
         }
     }
+    // info!("{:?}", abcde.buff);
+    abcde.copy_to_buffer();
 
     {
-        use crate::relib::network::socket::SimpleSock;
-
         let mut xyz = SimpleSock::new();
 
         xyz.peek();
@@ -90,8 +87,6 @@ pub fn kernel_main() -> ! {
 
         info!("{:?}", &xyz.read(4).unwrap());
 
-        println!("{:?}", &xyz.peek().unwrap());
-
         match &xyz.peek() {
             SocketReturns::ReadOk(strr) => {
                 let out = String::from_utf8_lossy(strr);
@@ -103,28 +98,33 @@ pub fn kernel_main() -> ! {
         }
     }
 
-    println!("$GREEN$able$RESET$@$LIGHTBLUE$stAble$ $RED$->$RESET$");
+    let mut sock_print_id = SimpleSock::new();
+
+    {
+        // sock_print_id.write(format!("原 画 フ ァ イ ル 集").into());
+        sock_print_id.write(format!("simple sockets are based").into());
+        sock_print_id.write(format!("🤯 🍆 💦").into());
+        // sock_print_id.write(format!("1....2....3....4....5....6....7....8....9").into());
+    }
+    // crate::relib::image::mono_bitmap::bruh();
 
     if false {
-        VGAE.lock().clear_screen(Color16::Black);
-
-        let xyz = format!("\u{e100}ableOS");
-
-        for x in xyz.chars().enumerate() {
+        for x in (*String::from_utf8_lossy(&sock_print_id.peek().unwrap()))
+            .chars()
+            .enumerate()
+        {
             vga_e::draw_char(x.1, x.0);
         }
     }
-    for y in 0..480 {
-        for x in 0..640 {
-            // info!("{x}");
-            VGAE.lock().set_pixel(x, y, Color16::Blue)
-        }
+
+    if false {
+        draw_filled_circle(400, 350, 99, Color16::Black);
+        // let _ = shadeable::evaluate_shader(1);
     }
 
-    let _ = rhai_test();
+    // abcde.clear();
+    // abcde.copy_to_buffer();
 
-    println!("hi");
-    // vga_e::test_it_fucko();
     // stack_overflow();
 
     sloop()
@@ -143,3 +143,35 @@ pub fn tick() {
 pub fn key_entropy(key: u8) {
     RAND_HANDLE.lock().seed_entropy_keyboard(key);
 }
+
+pub fn test_threads() {
+    let mut a_thread = Thread::new();
+
+    a_thread.new_task(test_fn);
+    a_thread.new_task(test_fn);
+    THREAD_LIST.lock().push(a_thread);
+}
+
+fn draw_filled_circle(cx: i32, cy: i32, radius: usize, color: Color16) {
+    let vga = VGAE.lock();
+
+    let r = radius as i32 * 2;
+    for y in 0..640 {
+        for x in 0..480 {
+            let dx = cx - x as i32 * 2 - 1;
+            let dy = cy - y as i32 * 2 - 1;
+
+            if dx * dx + dy * dy <= r * r {
+                vga.set_pixel(x, y, color);
+            };
+        }
+    }
+}
+
+pub fn log_version_data() {
+    info!("{} v{}", RELEASE_TYPE, KERNEL_VERSION);
+    info!(
+        "Brand String: {:?}",
+        master().unwrap().brand_string().unwrap()
+    );
+}

ableos/src/lib.rs

@@ -12,6 +12,7 @@
     llvm_asm,
     naked_functions
 )]
+#![feature(exclusive_range_pattern)]
 
 #[cfg(target_arch = "aarch64")]
 #[path = "arch/aarch64/mod.rs"]
@@ -28,19 +29,13 @@ pub mod arch;
 #[macro_use]
 pub mod print;
 
-/*
-#[macro_use]
-pub mod log;
-*/
-
-// pub use log2;
-
 #[macro_use]
 pub extern crate log;
 
 pub mod allocator;
 pub mod driver_traits;
 pub mod experiments;
+pub mod graphics;
 pub mod keyboard;
 pub mod kmain;
 pub mod logger;

ableos/src/panic.rs

@@ -1,7 +1,4 @@
-use {
-    crate::{arch::sloop, println},
-    core::panic::PanicInfo,
-};
+use {crate::arch::sloop, core::panic::PanicInfo};
 
 #[panic_handler]
 fn panic(info: &PanicInfo) -> ! {

ableos/src/pci.rs

@@ -0,0 +1,22 @@
+pub fn pciConfigReadWord(bus: u8, slot: u8, func: u8, offset: u8) {}
+
+/*
+uint16_t pciConfigReadWord(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset) {
+    uint32_t address;
+    uint32_t lbus  = (uint32_t)bus;
+    uint32_t lslot = (uint32_t)slot;
+    uint32_t lfunc = (uint32_t)func;
+    uint16_t tmp = 0;
+
+    // Create configuration address as per Figure 1
+    address = (uint32_t)((lbus << 16) | (lslot << 11) |
+              (lfunc << 8) | (offset & 0xFC) | ((uint32_t)0x80000000));
+
+    // Write out the address
+    outl(0xCF8, address);
+    // Read in the data
+    // (offset & 2) * 8) = 0 will choose the first word of the 32-bit register
+    tmp = (uint16_t)((inl(0xCFC) >> ((offset & 2) * 8)) & 0xFFFF);
+    return tmp;
+}
+*/

ableos/src/relib/encoding/mod.rs

@@ -0,0 +1 @@
+pub mod rle;

ableos/src/relib/encoding/rle.rs

@@ -0,0 +1,48 @@
+use alloc::vec;
+use alloc::vec::Vec;
+
+pub fn encode(bytes: &[u8]) -> Vec<u8> {
+    let mut encoding;
+
+    if bytes.first().is_none() {
+        return vec![];
+    } else {
+        encoding = vec![*bytes.first().unwrap()];
+    }
+
+    let mut occurrences = 1;
+
+    for byte in bytes.iter().skip(1) {
+        if byte == encoding.last().unwrap() && occurrences < 255 {
+            occurrences += 1;
+        } else {
+            encoding.extend(&[occurrences, *byte]);
+            occurrences = 1;
+        }
+    }
+
+    encoding.push(occurrences);
+
+    encoding
+}
+
+/// Read a run-length encoding and return its decoded contents.
+///
+/// * `bytes` - The bytes to be decoded.
+pub fn decode(bytes: &[u8]) -> Vec<u8> {
+    let mut decoding = Vec::<u8>::new();
+
+    for (i, byte) in bytes.iter().enumerate() {
+        if i % 2 != 0 {
+            continue;
+        }
+
+        // Repeat bytes[i], bytes[i+1] times in a row.
+        // e.g.: "!!" equals to 33 times "!" ("!" value in ASCII).
+        for _j in 0..bytes[i + 1] {
+            decoding.push(*byte)
+        }
+    }
+
+    decoding
+}

ableos/src/relib/image/mod.rs

@@ -1,2 +1,3 @@
-#[allow(unused_imports)]
-use qoi_rs;
+pub mod mono_bitmap;
+
+pub mod stupid_simple_image;

ableos/src/relib/image/stupid_simple_image/mod.rs

@@ -0,0 +1,6 @@
+/*
+r[255,0,0]
+g[0,0,0]
+b[0,0,0]
+a[0,0,0]
+*/

ableos/src/relib/mod.rs

@@ -1,8 +1,10 @@
 pub mod clparse;
+pub mod encoding;
 pub mod image;
 pub mod math;
 pub mod network;
 pub mod time;
+
 pub struct VectorTwo {
     pub x: i32,
     pub y: i32,

ableos/src/relib/network/socket.rs

@@ -66,6 +66,9 @@ impl SimpleSock {
             id: sock_lock.len() - 1,
         }
     }
+    pub fn regrab_sock(id: usize) -> SocketID {
+        SocketID { id }
+    }
 }
 
 impl Socket for SimpleSock {

ableos/src/vga_e.rs

@@ -1,18 +1,19 @@
-use ab_glyph::{Font, FontRef, Glyph};
-use alloc::string::String;
-
-use vga::{
+use {
+    ab_glyph::{Font, FontRef, Glyph},
+    vga::{
         colors::Color16,
         writers::{Graphics640x480x16, GraphicsWriter},
+    },
 };
 
 lazy_static::lazy_static! {
-
     pub static ref VGAE: spin::Mutex<Graphics640x480x16> = {
         let xyz =  Graphics640x480x16::new();
         xyz.set_mode();
         spin::Mutex::new(xyz)
     };
+     pub static ref VGAE_BUFF_OFFSET_X: spin::Mutex<u8> = spin::Mutex::new(0);
+     pub static ref VGAE_BUFF_OFFSET_Y: spin::Mutex<u8> = spin::Mutex::new(0);
 }
 
 pub fn test_it_fucko() {
@@ -47,35 +48,66 @@ pub trait GraphicsAPI {
     fn add_shader() {}
 }
 
-pub struct Buffer {
-    pub label: String,
-    pub resolution: (u64, u64),
-}
-
-// #[deprecated(note = "Deprecated because you should use the damn graphics api")]
-pub fn draw_char(character: char, offset: usize) {
+pub fn draw_char(character: char, _offset: usize) {
     let mode = *VGAE.lock();
+    let mut offset_x = VGAE_BUFF_OFFSET_X.lock();
+    let mut offset_y = VGAE_BUFF_OFFSET_Y.lock();
+
+    if *offset_x == 39 {
+        *offset_x = 0;
+        *offset_y += 1;
+    }
 
     let font = FontRef::try_from_slice(include_bytes!(
-        "../../ableos/assets/fonts/MesloLGS NF Regular.ttf"
+        "../../ableos/assets/fonts/unifont-14.0.01.ttf"
     ))
     .unwrap();
 
-    // Get a glyph for 'q' with a scale & position.
-    let q_glyph: Glyph = font.glyph_id(character).with_scale(20.0);
+    let font2 = FontRef::try_from_slice(include_bytes!(
+        "../../ableos/assets/fonts/unifont_upper-14.0.01.ttf"
+    ))
+    .unwrap();
 
-    //     Draw it.
-    if let Some(q) = font.outline_glyph(q_glyph) {
-        let scale = q.glyph().scale;
+    let mut has_char = false;
+    for x in font.codepoint_ids() {
+        if x.1 == character {
+            has_char = true;
+            break;
+        }
+    }
+
+    let used_font;
+    match has_char {
+        true => used_font = font,
+        false => used_font = font2,
+    }
+
+    let font_scale = 1.6;
+
+    match character {
+        '\n' => {}
+        _ => {
+            let q_glyph: Glyph = used_font.glyph_id(character).with_scale_and_position(
+                20.0 * font_scale,
+                ab_glyph::point(
+                    *offset_x as f32 * (10.0 * font_scale),
+                    *offset_y as f32 + (18.0 * font_scale),
+                ),
+            );
+            if let Some(q) = used_font.outline_glyph(q_glyph) {
                 q.draw(|x, y, c| {
-            if c > 0.2 {
+                    if c > 0.015 {
+                        let corner = q.px_bounds().min;
                         mode.set_pixel(
-                    x as usize + (offset * scale.y as usize / 2),
-                    //
-                    y as usize,
-                    Color16::LightGreen,
+                            x as usize + corner.x as usize,
+                            y as usize + corner.y as usize,
+                            Color16::Green,
                         );
                     }
                 });
             }
+
+            *offset_x += 1;
+        }
+    }
 }

ableos/src/wasm/mod.rs

@@ -1,12 +1,11 @@
 use alloc::string::String;
-use wasmi::TrapKind;
 
 use {
     alloc::format,
     wasm_sys::SysCall,
     wasmi::{
         Error, Externals, FuncInstance, FuncRef, ImportsBuilder, ModuleImportResolver,
-        ModuleInstance, RuntimeArgs, RuntimeValue, Signature, Trap, ValueType,
+        ModuleInstance, RuntimeArgs, RuntimeValue, Signature, Trap, TrapKind, ValueType,
     },
 };
 

shadeable/Cargo.lock

@@ -20,12 +20,39 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
 
+[[package]]
+name = "bit_field"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dcb6dd1c2376d2e096796e234a70e17e94cc2d5d54ff8ce42b28cef1d0d359a4"
+
+[[package]]
+name = "bitflags"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "conquer-once"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7c6d3a9775a69f6d1fe2cc888999b67ed30257d3da4d2af91984e722f2ec918a"
+dependencies = [
+ "conquer-util",
+]
+
+[[package]]
+name = "conquer-util"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e763eef8846b13b380f37dfecda401770b0ca4e56e95170237bd7c25c7db3582"
+
 [[package]]
 name = "const-random"
 version = "0.1.13"
@@ -63,6 +90,12 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7a81dae078cea95a014a339291cec439d2f232ebe854a9d672b796c6afafa9b7"
 
+[[package]]
+name = "font8x8"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "875488b8711a968268c7cf5d139578713097ca4635a76044e8fe8eedf831d07e"
+
 [[package]]
 name = "getrandom"
 version = "0.2.4"
@@ -101,6 +134,15 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c7d73b3f436185384286bd8098d17ec07c9a7d2388a6599f824d8502b529702a"
 
+[[package]]
+name = "lock_api"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712a4d093c9976e24e7dbca41db895dabcbac38eb5f4045393d17a95bdfb1109"
+dependencies = [
+ "scopeguard",
+]
+
 [[package]]
 name = "no-std-compat"
 version = "0.4.1"
@@ -175,11 +217,19 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "scopeguard"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
+
 [[package]]
 name = "shadeable"
 version = "0.1.0"
 dependencies = [
+ "libm",
  "rhai",
+ "vga",
 ]
 
 [[package]]
@@ -197,6 +247,15 @@ dependencies = [
  "static_assertions",
 ]
 
+[[package]]
+name = "spinning_top"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75adad84ee84b521fb2cca2d4fd0f1dab1d8d026bda3c5bea4ca63b5f9f9293c"
+dependencies = [
+ "lock_api",
+]
+
 [[package]]
 name = "static_assertions"
 version = "1.1.0"
@@ -235,8 +294,39 @@ version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 
+[[package]]
+name = "vga"
+version = "0.2.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67cbcb7bfff998d176ffb8f2c3dfd6cb0fe62740e36dee6c64fc3928c01001bf"
+dependencies = [
+ "bitflags",
+ "conquer-once",
+ "font8x8",
+ "num-traits",
+ "spinning_top",
+ "x86_64",
+]
+
+[[package]]
+name = "volatile"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e4c2dbd44eb8b53973357e6e207e370f0c1059990df850aca1eca8947cf464f0"
+
 [[package]]
 name = "wasi"
 version = "0.10.2+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+
+[[package]]
+name = "x86_64"
+version = "0.14.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fb611915c917c6296d11e23f71ff1ecfe49c5766daba92cd3df52df6b58285b6"
+dependencies = [
+ "bit_field",
+ "bitflags",
+ "volatile",
+]

shadeable/Cargo.toml

@@ -7,7 +7,8 @@ edition = "2021"
 
 [dependencies]
 
-
+vga = "*"
+libm = "*"
 
 [dependencies.rhai]
 version = "*"

shadeable/src/lib.rs

@@ -2,13 +2,13 @@
 extern crate alloc;
 use alloc::{boxed::Box, vec, vec::Vec};
 use engine_internals::engine_startup;
-use pixel_format::RGBA;
+use pixel_format::{Rgba64, RGBA};
 // use core::fmt::Result;
 use core::result::Result;
 use rhai::{EvalAltResult, Scope};
 
 mod engine_internals;
-mod pixel_format;
+pub mod pixel_format;
 
 pub const SHADER: &str = include_str!("../shaders/simple.shade");
 
@@ -66,3 +66,16 @@ pub fn rhai_test() -> Result<Vec<RGBA>, Box<EvalAltResult>>
     // Done!
     Ok(result_rgba)
 }
+
+pub fn evaluate_shader(pixel: u8) -> Result<Rgba64, Box<EvalAltResult>> {
+    let engine = engine_startup();
+
+    let ast = engine.compile(SHADER)?;
+    let mut scope = Scope::new();
+
+    scope.push("PIXEL_RGBA", pixel);
+
+    let result: RGBA = engine.call_fn(&mut scope, &ast, "main", ())?;
+
+    Ok(8)
+}

shadeable/src/pixel_format.rs

@@ -1,5 +1,7 @@
-use rhai::INT;
+#![feature(exclusive_range_pattern)]
 
+use rhai::INT;
+use vga::colors::Color16;
 pub type Rgba64 = u64;
 
 pub fn get_r(rgba: Rgba64) -> u8 {
@@ -37,20 +39,20 @@ pub fn set_r(rgba: Rgba64, r: u8) -> Rgba64 {
     return z | y;
 }
 
-pub fn set_g(rgba: Rgba64, r: u8) -> Rgba64 {
-    let z = (r as Rgba64) << 16;
+pub fn set_g(rgba: Rgba64, g: u8) -> Rgba64 {
+    let z = (g as Rgba64) << 16;
     let y = rgba & 0xffffff;
     return z | y;
 }
 
-pub fn set_b(rgba: Rgba64, r: u8) -> Rgba64 {
-    let z = (r as Rgba64) << 26 - 16;
+pub fn set_b(rgba: Rgba64, b: u8) -> Rgba64 {
+    let z = (b as Rgba64) << 26 - 16;
     let y = rgba & 0xffffff;
     return z | y;
 }
 
-pub fn set_a(rgba: Rgba64, r: u8) -> Rgba64 {
-    let z = (r as Rgba64) << 8;
+pub fn set_a(rgba: Rgba64, a: u8) -> Rgba64 {
+    let z = (a as Rgba64) << 8;
     let y = rgba & 0xffffff;
     return z | y;
 }
@@ -85,7 +87,6 @@ pub fn rgba_div(a: Rgba64, b: Rgba64) -> Rgba64 {
 
     return fin;
 }
-
 pub fn rgba_mult(a: RGBA, b: RGBA) -> RGBA {
     RGBA {
         r: a.r * b.r,
@@ -111,3 +112,133 @@ pub fn rgba_sub(a: RGBA, b: RGBA) -> RGBA {
     }
 }
 //
+
+pub fn new_rgba64(r: u8, g: u8, b: u8, a: u8) -> Rgba64 {
+    let mut x = 0;
+
+    x |= set_r(x, r);
+    x |= set_g(x, g);
+    x |= set_b(x, b);
+    x |= set_a(x, a);
+
+    x
+}
+
+pub fn into_vga_16(rgba_64: Rgba64) -> Color16 {
+    let mut fourbit: u8 = 0;
+    fourbit |= match get_r(rgba_64) {
+        85..=170 => 0b0100,
+        171..=255 => 0b1100,
+        _ => 0,
+    };
+    fourbit |= match get_g(rgba_64) {
+        85..=170 => 0b0010,
+        171..=255 => 0b1010,
+        _ => 0,
+    };
+    fourbit |= match get_b(rgba_64) {
+        85..=170 => 0b0001,
+        171..=255 => 0b1001,
+        _ => 0,
+    };
+    use Color16::*;
+    match fourbit {
+        0 => Black,
+        1 => Blue,
+        2 => Green,
+        3 => Cyan,
+        4 => Red,
+        5 => Magenta,
+        6 => Brown,
+        7 => LightGrey,
+        8 => DarkGrey,
+        9 => LightBlue,
+        10 => LightGreen,
+        11 => LightCyan,
+        12 => LightRed,
+        13 => Pink,
+        14 => Yellow,
+        15 => White,
+        _ => Green,
+    }
+}
+
+pub fn from_vga_16(color: Color16) -> Rgba64 {
+    match color {
+        Color16::Black => new_rgba64(0, 0, 0, 0),
+        Color16::Blue => new_rgba64(0, 0, 255, 0),
+        Color16::Green => new_rgba64(0, 255, 0, 0),
+        Color16::Cyan => new_rgba64(0, 255, 255, 0),
+        Color16::Red => new_rgba64(255, 0, 0, 0),
+        Color16::Magenta => new_rgba64(255, 0, 255, 0),
+        Color16::Brown => new_rgba64(165, 42, 42, 0),
+        Color16::Pink => new_rgba64(255, 105, 180, 0),
+        Color16::LightGrey => new_rgba64(211, 211, 211, 0),
+        Color16::DarkGrey => new_rgba64(105, 105, 105, 0),
+        Color16::Yellow => new_rgba64(255, 255, 0, 0),
+        Color16::White => new_rgba64(255, 255, 255, 0),
+        // To be colored
+        Color16::LightBlue => new_rgba64(0, 255, 255, 0),
+        Color16::LightGreen => new_rgba64(0, 255, 255, 0),
+        Color16::LightCyan => new_rgba64(0, 255, 255, 0),
+        Color16::LightRed => new_rgba64(0, 255, 255, 0),
+    }
+}
+
+use libm::sqrt;
+
+fn euclideand(c1: (u8, u8, u8), c2: (u8, u8, u8)) -> u8 {
+    let (r1, g1, b1) = c1;
+    let (r2, g2, b2) = c2;
+    let (rd, gd, bd) = (r2 - r1, g2 - g1, b2 - b1);
+    sqrt((rd * rd + gd * gd + bd * bd) as f64) as u8
+}
+
+fn get_color16(c: (u8, u8, u8)) -> Color16 {
+    let palette: [(u8, u8, u8); 16] = [
+        (0, 0, 0),
+        (0, 0, 255),
+        (128, 128, 128),
+        (128, 128, 128),
+        (128, 128, 128),
+        (128, 128, 128),
+        (128, 128, 128),
+        (128, 128, 128),
+        (128, 128, 128),
+        (128, 128, 128),
+        (128, 128, 128),
+        (128, 128, 128),
+        (128, 128, 128),
+        (128, 128, 128),
+        (128, 128, 128),
+        (128, 128, 128),
+    ];
+    let mut minc = euclideand(c, palette[0]);
+    let mut retval = 0;
+    for i in 1..16 {
+        let eucd = euclideand(c, palette[i]);
+        if eucd < minc {
+            retval = i;
+            minc = eucd
+        }
+    }
+    match retval {
+        0 => Color16::Black,
+        1 => Color16::Red,
+        2 => Color16::Red,
+        3 => Color16::Red,
+        4 => Color16::Red,
+        5 => Color16::Red,
+        6 => Color16::Red,
+        7 => Color16::Red,
+        8 => Color16::Red,
+        9 => Color16::Red,
+        10 => Color16::Blue,
+        11 => Color16::Blue,
+        12 => Color16::Blue,
+        13 => Color16::Blue,
+        14 => Color16::Blue,
+        15 => Color16::Blue,
+        _ => Color16::Pink,
+    }
+}