writing brick to gpu

src/renderer/buffers/brick_buffer.rs

@@ -1,14 +1,14 @@
-
+use wgpu::util::DeviceExt;
 use std::convert::TryInto;
 
 const BRICK_SIZE : usize = 32; // 32x32x32 brick size
-const BRICK_NUM : usize = 64; // 64 bricks in texture
+const BRICK_NUM : usize = 10000; // 64 bricks in texture
 
 const BRICK_LEN : usize = BRICK_SIZE*BRICK_SIZE*BRICK_SIZE;
 const DATA_LEN : usize = BRICK_LEN * BRICK_NUM;
 
 struct BrickData {
-    data: Box<[u8]>
+    pub data: Box<[u8]>
 }
 
 impl BrickData {
@@ -24,11 +24,6 @@ impl BrickData {
         let offset = brick * BRICK_LEN;
         self.data[offset + local_idx] = value;
     }
-
-    pub fn get_1024(&mut self, offset: usize) -> [u8; 1024]
-    {
-        self.data[offset..offset+1024].try_into().expect("wrong size")
-    }
 }
 
 
@@ -44,7 +39,7 @@ impl BrickBuffer {
     pub fn new(device: &wgpu::Device) -> Self {
 
         // Create texture
-        let size = wgpu::Extent3d { width: (BRICK_SIZE*BRICK_NUM) as u32, height: BRICK_SIZE as u32, depth: BRICK_SIZE as u32 };
+        let size = wgpu::Extent3d { width: BRICK_SIZE as u32, height: BRICK_SIZE as u32, depth: (BRICK_SIZE*BRICK_NUM) as u32 };
         let texture = device.create_texture(
             &wgpu::TextureDescriptor {
                 size: size,
@@ -107,6 +102,24 @@ impl BrickBuffer {
         }
 
         // Done
+        println!("Brick buffer size: {} MB", DATA_LEN as f32 / 1024.0 / 1024.0);
         Self { bricks, texture, size, bind_layout, bind_group }
     }
+
+    pub fn write(&mut self, queue: &wgpu::Queue)
+    {
+        return ();
+
+        // Get first brick
+        let brick_bytes : [u8;BRICK_LEN] = self.bricks.data[0..BRICK_LEN].try_into().unwrap();
+        let brick_size = wgpu::Extent3d{ width: BRICK_SIZE as u32, height: BRICK_SIZE as u32, depth: BRICK_SIZE as u32 };
+
+        // Write
+        queue.write_texture(
+            wgpu::TextureCopyView { texture: &self.texture, mip_level: 0, origin: wgpu::Origin3d::ZERO },
+            &brick_bytes,
+            wgpu::TextureDataLayout { offset: 0, bytes_per_row: self.size.width, rows_per_image: self.size.height },
+            brick_size
+        );
+    }
 }