From 5ad6b4dc1c6e889b5258d4adc82cb06c524ac08b Mon Sep 17 00:00:00 2001
From: Jarrod Doyle <thejarroddoyle@gmail.com>
Date: Sat, 8 Apr 2023 21:49:45 +0100
Subject: [PATCH] Add a simple texture color change compute shader

---
 assets/shaders/image_recolor.wgsl | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 assets/shaders/image_recolor.wgsl

diff --git a/assets/shaders/image_recolor.wgsl b/assets/shaders/image_recolor.wgsl
new file mode 100644
index 0000000..b01c614
--- /dev/null
+++ b/assets/shaders/image_recolor.wgsl
@@ -0,0 +1,12 @@
+@group(0) @binding(0) var output: texture_storage_2d<rgba8unorm, write>;
+
+@compute @workgroup_size(8, 8, 1)
+fn compute(@builtin(global_invocation_id) global_id: vec3<u32>) {
+    let img_coord = vec2<i32>(global_id.xy);
+    let img_dims = textureDimensions(output);
+    let img_coord_frac = vec2<f32>(
+        f32(img_coord.x) / f32(img_dims.x),
+        f32(img_coord.y) / f32(img_dims.y)
+    );
+    textureStore(output, img_coord, vec4<f32>(img_coord_frac, 1.0, 1.0));
+}
\ No newline at end of file