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Add the disallow_unsafe_apis toggle.

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Some APIs exposed by Dawn are not expected to be fully secured until
after the first Origin Trial of WebGPU. To prevent their usage we add a
new toggle that will be set by default by Chromium. This toggle throws a
validation error when an unsafe API is used.

Bug: chromium:1138528

Change-Id: I831db70bdac5128ebc32d36d55a0eaefc42c1807
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/31443
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
This commit is contained in:
Corentin Wallez
2020-11-03 10:54:56 +00:00
committed by Commit Bot service account
parent 43ef0a365b
commit 8d248300c4
7 changed files with 309 additions and 105 deletions
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8
src/dawn_native/ComputePassEncoder.cpp
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@@ -70,6 +70,14 @@ namespace dawn_native {
mEncodingContext->TryEncode(this, [&](CommandAllocator* allocator) -> MaybeError {
DAWN_TRY(GetDevice()->ValidateObject(indirectBuffer));
// Indexed dispatches need a compute-shader based validation to check that the dispatch
// sizes aren't too big. Disallow them as unsafe until the validation is implemented.
if (GetDevice()->IsToggleEnabled(Toggle::DisallowUnsafeAPIs)) {
return DAWN_VALIDATION_ERROR(
"DispatchIndirect is disallowed because it doesn't validate that the dispatch "
"size is valid yet.");
}
if (indirectOffset % 4 != 0) {
return DAWN_VALIDATION_ERROR("Indirect offset must be a multiple of 4");
}