diff --git a/src/builder.rs b/src/builder.rs
index 509d18bc..a7ac027d 100644
--- a/src/builder.rs
+++ b/src/builder.rs
@@ -515,6 +515,9 @@ const fn texture_format_size(texture_format: wgpu::TextureFormat) -> f32 {
         | Rgb9e5Ufloat
         | Depth16Unorm => 2.0, // 16.0 / 8.0
 
+        // 24-bit formats, 8 bits per component
+        NV12 => 3.0, // 24.0 / 8.0
+
         // 32-bit formats, 8 bits per component
         R32Uint
         | R32Sint
@@ -623,7 +626,5 @@ const fn texture_format_size(texture_format: wgpu::TextureFormat) -> f32 {
 
         // 12x12 blocks, 16 bytes per block
         Astc { block: B12x12, channel: _ } => 9.0, // 12.0 * 12.0 / 16.0
-
-        NV12 => todo!(),
     }
 }