Fix web version and update readme

Author: arthomnix

Cargo.lock

@@ -16,6 +16,7 @@ crate-type = ["cdylib", "rlib"]
 [dependencies]
 eframe = { version = "0.28", default-features = false, features = [ "wgpu", "accesskit", "default_fonts", "wayland", "web_screen_reader" ] }
 egui-wgpu = "0.28"
+wgpu = { version = "*", features = ["webgpu", "webgl"] }
 log = "0.4"
 env_logger = "0.11"
 bytemuck = { version = "1.16", features = [ "derive" ] }

Cargo.toml

@@ -12,6 +12,9 @@ Custom functions should be valid WGSL expressions, with the following extra func
 * `cdiv(vec2<f32>, vec2<f32>) -> vec2<f32>`: divide two complex numbers
 * `cmul(vec2<f32>, vec2<f32>) -> vec2<f32>`: multiply two complex numbers
 
+* `rgb(u32) -> vec3<f32>` - Convert a hex RGB colour (in the form `0xRRGGBBu`) to the format WebGPU expects
+* `hsv_rgb(vec3<f32>) -> vec3<f32>` - Convert an HSV colour to RGB
+
 All builtin WGSL functions are also available.
 
 ## Note on Git history

README.MD

@@ -15,7 +15,8 @@ canvas {
     margin-left: auto;
     display: block;
     position: absolute;
-    top: 0%;
-    left: 50%;
-    transform: translate(-50%, 0%);
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
 }