Fix validation error on wgpu triangle pipeline

hecrj · Sep 1, 2019 · 2ea1262 · 2ea1262
1 parent 6fc6c2c
commit 2ea1262
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Showing 2 changed files with 8 additions and 5 deletions.
diff --git a/Cargo.toml b/Cargo.toml
@@ -50,5 +50,4 @@ wgpu = { version = "0.2", optional = true }
 wgpu_glyph = { version = "0.3", optional = true }
 
 [dev-dependencies]
-# Example dependencies
 rand = "0.6"
diff --git a/src/graphics/backend_wgpu/triangle.rs b/src/graphics/backend_wgpu/triangle.rs
@@ -113,12 +113,14 @@ impl Pipeline {
         let vertices = device.create_buffer(&wgpu::BufferDescriptor {
             size: mem::size_of::<Vertex>() as u32
                 * Self::INITIAL_BUFFER_SIZE as u32,
-            usage: wgpu::BufferUsageFlags::VERTEX,
+            usage: wgpu::BufferUsageFlags::VERTEX
+                | wgpu::BufferUsageFlags::TRANSFER_DST,
         });
 
         let indices = device.create_buffer(&wgpu::BufferDescriptor {
             size: Self::INITIAL_BUFFER_SIZE * 2,
-            usage: wgpu::BufferUsageFlags::INDEX,
+            usage: wgpu::BufferUsageFlags::INDEX
+                | wgpu::BufferUsageFlags::TRANSFER_DST,
         });
 
         Pipeline {
@@ -165,12 +167,14 @@ impl Pipeline {
 
             self.vertices = device.create_buffer(&wgpu::BufferDescriptor {
                 size: mem::size_of::<Vertex>() as u32 * new_size,
-                usage: wgpu::BufferUsageFlags::VERTEX,
+                usage: wgpu::BufferUsageFlags::VERTEX
+                    | wgpu::BufferUsageFlags::TRANSFER_DST,
             });
 
             self.indices = device.create_buffer(&wgpu::BufferDescriptor {
                 size: new_size * 2,
-                usage: wgpu::BufferUsageFlags::INDEX,
+                usage: wgpu::BufferUsageFlags::INDEX
+                    | wgpu::BufferUsageFlags::TRANSFER_DST,
             });
 
             self.buffer_size = new_size;