1 files changed, 40 insertions, 0 deletions
diff --git a/old/vgcodec/src/helper.rs b/old/vgcodec/src/helper.rs
new file mode 100644
index 0000000..13f9c1a
--- /dev/null
+++ b/old/vgcodec/src/helper.rs
@@ -0,0 +1,40 @@
+use log::info;
+use wgpu::{Extent3d, Queue, Texture};
+
+pub fn write_texture(queue: &Queue, target: &Texture, data: &[u8], size: Extent3d) {
+    info!("uploading texture {size:?} ({} bytes)", data.len());
+
+    let bytes_per_pixel = std::mem::size_of::<u32>() as u32;
+    let unpadded_bytes_per_row = size.width * bytes_per_pixel;
+    let align = wgpu::COPY_BYTES_PER_ROW_ALIGNMENT;
+    let padded_bytes_per_row_padding = (align - unpadded_bytes_per_row % align) % align;
+    let padded_bytes_per_row = unpadded_bytes_per_row + padded_bytes_per_row_padding;
+
+    let mut padded = vec![];
+    for y in 0..(size.height as usize) {
+        for x in 0..(size.width as usize) {
+            for c in 0..4 {
+                padded.push(data[c + x * 4 + y * 4 * size.width as usize])
+            }
+        }
+        for _ in 0..padded_bytes_per_row_padding {
+            padded.push(0)
+        }
+    }
+
+    queue.write_texture(
+        wgpu::ImageCopyTexture {
+            texture: &target,
+            mip_level: 0,
+            origin: wgpu::Origin3d::ZERO,
+            aspect: wgpu::TextureAspect::All,
+        },
+        &padded,
+        wgpu::ImageDataLayout {
+            offset: 0,
+            bytes_per_row: Some(std::num::NonZeroU32::try_from(padded_bytes_per_row).unwrap()),
+            rows_per_image: None,
+        },
+        size,
+    );
+}