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feat(vulkan): re-enable GPU-Assisted Validation #19

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catbot merged 1 commit from claude/issue-17 into master 2026-06-03 04:11:00 +02:00
Conversation 0 Commits 1 Files changed 1 +14 -20
1 changed files with 14 additions and 20 deletions
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34
implementations/Crafter.Graphics-Device.cpp
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@ -432,30 +432,24 @@ void Device::Initialize() {
app.pEngineName = "Crafter.Graphics";
app.apiVersion = VK_MAKE_VERSION(1, 4, 0);
// TODO(re-enable GPU-AV): once Vulkan SDK > 1.4.341 is the floor.
// GPU-Assisted Validation: shader-execution-time instrumentation that
// catches out-of-bounds descriptor / buffer access the standard layer
// can't see. Opt-in via the enable list below.
//
// GPU-Assisted Validation is opt-in via the enable list — leaving it
// out disables it. SDK 1.4.341's GPU-AV does not handle
// descriptor_heap pipelines (VK_PIPELINE_CREATE_2_DESCRIPTOR_HEAP_BIT_EXT
// with layout = VK_NULL_HANDLE): `PipelineSubState::GetPipelineLayoutUnion`
// null-derefs on the first dispatch/draw against such a pipeline.
//
// Tracked + fixed upstream:
// This was previously disabled to work around a bug in SDK 1.4.341's
// GPU-AV, which null-deref'd on descriptor_heap pipelines
// (VK_PIPELINE_CREATE_2_DESCRIPTOR_HEAP_BIT_EXT with layout =
// VK_NULL_HANDLE) in `PipelineSubState::GetPipelineLayoutUnion`:
// https://github.com/KhronosGroup/Vulkan-ValidationLayers/issues/12103
// Per spencer-lunarg (LunarG): broken in 1.4.341, fixed and landing
// in the next SDK release. Once we bump our Vulkan-Headers / SDK
// dependency past 1.4.341, restore the original enable list:
//
// VkValidationFeatureEnableEXT enables[] = {
// VK_VALIDATION_FEATURE_ENABLE_GPU_ASSISTED_EXT
// };
// validationFeatures.enabledValidationFeatureCount = 1;
// validationFeatures.pEnabledValidationFeatures = enables;
//
// Standard validation (the layer itself) is still on; only the GPU-AV
// out-of-bounds / shader-instrumentation checks are temporarily off.
// Per spencer-lunarg (LunarG) that was fixed in the next SDK release.
// The validation layer is now 1.4.350 (> 1.4.341), so re-enable it.
VkValidationFeatureEnableEXT enabledValidationFeatures[] = {
VK_VALIDATION_FEATURE_ENABLE_GPU_ASSISTED_EXT,
};
VkValidationFeaturesEXT validationFeatures = {
.sType = VK_STRUCTURE_TYPE_VALIDATION_FEATURES_EXT,
.enabledValidationFeatureCount = sizeof(enabledValidationFeatures) / sizeof(enabledValidationFeatures[0]),
.pEnabledValidationFeatures = enabledValidationFeatures,
};
VkInstanceCreateInfo instanceCreateInfo = {};