initial (bad) voxel renderer

src/client/render/voxel/grid.rs

@@ -0,0 +1,24 @@
+use nalgebra::Matrix4x3;
+
+// this has cost me more than a couple of hours trying to figure out alignment :skull:
+// putting transform at the beginning so I don't have to deal with its alignment
+// I should probably look into encase (crate)
+#[repr(C, align(16))]
+#[derive(Clone, Copy, PartialEq, bytemuck::Zeroable)]
+pub struct GridInfo {
+    pub transform: Matrix4x3<f32>,
+    pub width: u32,
+    pub height: u32,
+}
+
+unsafe impl bytemuck::Pod for GridInfo {}
+
+impl Default for GridInfo {
+    fn default() -> Self {
+        Self {
+            transform: Matrix4x3::identity(),
+            width: 0,
+            height: 0,
+        }
+    }
+}