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Limit when buffer FAST_DEVICE_ACCESS is requested

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This commit is contained in:
Jonathan Behrens 2021-01-02 13:27:42 -05:00
parent e9232127f0
commit 0e84c29691
1 changed files with 2 additions and 1 deletions
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3
wgpu-core/src/device/mod.rs
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@ -448,7 +448,8 @@ impl<B: GfxBackend> Device<B> {
let mut flags = Uf::empty();
let map_flags = desc.usage & (Bu::MAP_READ | Bu::MAP_WRITE);
if !(desc.usage - map_flags).is_empty() {
let map_copy_flags = desc.usage & (Bu::MAP_READ | Bu::MAP_WRITE | Bu::COPY_SRC | Bu::COPY_DST);
if map_flags.is_empty() || !(desc.usage - map_copy_flags).is_empty() {
flags |= Uf::FAST_DEVICE_ACCESS;
}
if transient {