fixup! fix(core): use BufferMapState::Active for any BufferUsages::MAP_* flags

Author: ErichDonGubler

wgpu-core/src/conv.rs

@@ -26,15 +26,15 @@ pub fn is_valid_external_image_copy_dst_texture_format(format: wgt::TextureForma
     }
 }
 
-pub fn map_buffer_usage(usage: wgt::BufferUsages) -> wgt::BufferUses {
+pub fn map_buffer_usage(usage: wgt::BufferUsages, mapped_at_creation: bool) -> wgt::BufferUses {
     let mut u = wgt::BufferUses::empty();
     u.set(
         wgt::BufferUses::MAP_READ,
         usage.contains(wgt::BufferUsages::MAP_READ),
     );
     u.set(
         wgt::BufferUses::MAP_WRITE,
-        usage.contains(wgt::BufferUsages::MAP_WRITE),
+        usage.contains(wgt::BufferUsages::MAP_WRITE) || mapped_at_creation,
     );
     u.set(
         wgt::BufferUses::COPY_SRC,

wgpu-core/src/device/resource.rs

@@ -900,7 +900,7 @@ impl Device {
             }
         }
 
-        let mut usage = conv::map_buffer_usage(desc.usage);
+        let mut usage = conv::map_buffer_usage(desc.usage, desc.mapped_at_creation);
 
         if desc.usage.contains(wgt::BufferUsages::INDIRECT) {
             self.require_downlevel_flags(wgt::DownlevelFlags::INDIRECT_EXECUTION)?;