debug physics

1 files changed, 28 insertions, 0 deletions

diff --git a/src/shader/debug.wgsl b/src/shader/debug.wgsl
new file mode 100644
index 0000000..256b969
--- /dev/null
+++ b/src/shader/debug.wgsl
@@ -0,0 +1,28 @@
+struct Camera {
+    scale: vec2f,
+    centre: vec2f,
+};
+
+@group(0) @binding(0) var<uniform> camera: Camera;
+
+struct VertexOutput {
+    @builtin(position) clip_position: vec4f,
+    @location(0) color: vec4f,
+};
+
+@vertex
+fn vs_main(
+    @location(0) world: vec2f,
+    @location(1) color: vec4f,
+) -> VertexOutput {
+    var out: VertexOutput;
+    out.clip_position = vec4f((world - camera.centre) * camera.scale, 0.0, 1.0);
+    out.color = color;
+
+    return out;
+}
+
+@fragment
+fn fs_main(in: VertexOutput) -> @location(0) vec4f {
+    return in.color;
+}