commit 2784dfae9c098381898fdf008ba361a9d51070a9
Author: Able <abl3theabove@gmail.com>
Date:   Fri Jan 14 07:54:24 2022 -0600

    patching together a scuffed shader lang

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..7434b7b
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,224 @@
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..9899d76
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "shadeable"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rhai = "*"
+rhai-rand = "0.1"
\ No newline at end of file
diff --git a/example_shaders/simple.shade b/example_shaders/simple.shade
new file mode 100644
index 0000000..8dff847
--- /dev/null
+++ b/example_shaders/simple.shade
@@ -0,0 +1,15 @@
+// This gets executed for each pixel on the buffer
+
+
+
+const VERSION = 0.5;
+
+
+fn main(){
+    let abcd = RGBA(0, 33, 0, 0);
+
+    // print(rand_float());
+
+
+    PIXEL_RGBA;
+}
\ No newline at end of file
diff --git a/src/engine_internals.rs b/src/engine_internals.rs
new file mode 100644
index 0000000..b887596
--- /dev/null
+++ b/src/engine_internals.rs
@@ -0,0 +1,19 @@
+use crate::pixel_format::{rgba_add, rgba_div, rgba_mult, rgba_sub, RGBA};
+use rhai_rand::RandomPackage;
+
+use rhai::{packages::Package, Engine};
+pub fn engine_startup() -> Engine {
+    let mut engine = Engine::new();
+
+    engine
+        .register_type::<RGBA>()
+        .register_fn("RGBA", RGBA::new)
+        .register_fn("*", rgba_mult)
+        .register_fn("/", rgba_div)
+        .register_fn("+", rgba_add)
+        .register_fn("-", rgba_sub);
+
+    engine.register_global_module(RandomPackage::new().as_shared_module());
+
+    engine
+}
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..1d495ea
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,70 @@
+use pixel_format::Rgba64;
+use rhai::{EvalAltResult, Scope};
+
+use crate::{
+    engine_internals::engine_startup,
+    pixel_format::{rgba_div, RGBA},
+};
+
+pub const SHADER: &str = include_str!("../example_shaders/simple.shade");
+
+mod engine_internals;
+pub mod pixel_format;
+
+fn main() -> Result<(), Box<EvalAltResult>> {
+    let rgba: Rgba64 = 0xffffffff;
+    let rgba_2: Rgba64 = 0x02010101;
+
+    println!("{}", rgba_div(rgba, rgba_2));
+
+    /*
+    pixel_format::get_g(rgba);
+    pixel_format::get_b(rgba);
+    pixel_format::get_a(rgba);
+    */
+
+    let engine = engine_startup();
+    let ast = engine.compile(SHADER)?;
+    let mut scope = Scope::new();
+
+    let a = vec![
+        RGBA {
+            r: 255,
+            g: 0,
+            b: 0,
+            a: 0,
+        },
+        RGBA {
+            r: 0,
+            g: 255,
+            b: 0,
+            a: 0,
+        },
+        RGBA {
+            r: 0,
+            g: 0,
+            b: 255,
+            a: 0,
+        },
+        RGBA {
+            r: 0,
+            g: 0,
+            b: 0,
+            a: 255,
+        },
+    ];
+
+    let mut index = 0;
+    /*
+    for pixel in a {
+        scope.push("PIXEL_X", 0); // add constant variable
+        scope.push("PIXEL_Y", index); // add constant variable
+        scope.push("PIXEL_RGBA", pixel);
+
+        let result: RGBA = engine.call_fn(&mut scope, &ast, "main", ())?;
+        println!("Pixel {}: {:?}", index, result); // prints 42
+        index += 1;
+    }
+     */
+    Ok(())
+}
diff --git a/src/pixel_format.rs b/src/pixel_format.rs
new file mode 100644
index 0000000..726f6a0
--- /dev/null
+++ b/src/pixel_format.rs
@@ -0,0 +1,112 @@
+use rhai::INT;
+
+pub type Rgba64 = u64;
+
+pub fn get_r(rgba: Rgba64) -> u8 {
+    let x: u64 = rgba;
+
+    let y = x >> 24;
+
+    return (y & 0xff).try_into().unwrap();
+}
+pub fn get_g(rgba: Rgba64) -> u8 {
+    let x: u64 = rgba;
+
+    let y = x >> 16;
+
+    return (y & 0xff).try_into().unwrap();
+}
+pub fn get_b(rgba: Rgba64) -> u8 {
+    let x: u64 = rgba;
+
+    let y = x >> (24 - 16);
+
+    return (y & 0xff).try_into().unwrap();
+}
+pub fn get_a(rgba: Rgba64) -> u8 {
+    let x = rgba;
+
+    let y = x >> (24 - 16 - 8);
+
+    return (y & 0xff).try_into().unwrap();
+}
+
+pub fn set_r(rgba: Rgba64, r: u8) -> Rgba64 {
+    let z = (r as Rgba64) << 24;
+    let y = rgba & 0xffffff;
+    return z | y;
+}
+
+pub fn set_g(rgba: Rgba64, r: u8) -> Rgba64 {
+    let z = (r 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;
+    let y = rgba & 0xffffff;
+    return z | y;
+}
+
+pub fn set_a(rgba: Rgba64, r: u8) -> Rgba64 {
+    let z = (r as Rgba64) << 8;
+    let y = rgba & 0xffffff;
+    return z | y;
+}
+
+#[derive(Debug, Clone)]
+pub struct RGBA {
+    pub r: INT,
+    pub g: INT,
+    pub b: INT,
+    pub a: INT,
+}
+impl RGBA {
+    pub fn new(r: INT, g: INT, b: INT, a: INT) -> Self {
+        Self { r, g, b, a }
+    }
+}
+
+pub fn rgba_div(a: Rgba64, b: Rgba64) -> Rgba64 {
+    let mut fin: Rgba64 = 0;
+
+    println!("{}", fin);
+    fin = set_r(fin, get_r(a) / get_r(b));
+    println!("{}", fin);
+
+    fin = set_g(fin, get_g(a) / get_g(b));
+    /*
+
+    get_b(a) / get_b(b);
+
+    get_a(a) / get_a(b);
+    */
+
+    return fin;
+}
+
+pub fn rgba_mult(a: RGBA, b: RGBA) -> RGBA {
+    RGBA {
+        r: a.r * b.r,
+        g: a.g * b.g,
+        b: a.b * b.b,
+        a: a.a * b.a,
+    }
+}
+pub fn rgba_add(a: RGBA, b: RGBA) -> RGBA {
+    RGBA {
+        r: a.r + b.r,
+        g: a.g + b.g,
+        b: a.b + b.b,
+        a: a.a + b.a,
+    }
+}
+pub fn rgba_sub(a: RGBA, b: RGBA) -> RGBA {
+    RGBA {
+        r: a.r - b.r,
+        g: a.g - b.g,
+        b: a.b - b.b,
+        a: a.a - b.a,
+    }
+}