Fix: Vulkan Shader Binding Table Stride Mismatch in Ray Tracing

Trace dispatch hits wrong miss shaders; validation reports stride mismatch.

Align stride

uint32_t stride = align(handleSize, alignment);

Stride matches device's requirement; SBT works.

Or use a helper library

Vulkan-Hpp has SBT helpers. Less error-prone.

Profile per device

Each shipping GPU's alignment requirements. Validate.

“SBT alignment is device-specific. Generic stride assumption breaks.”

If you ship ray tracing, the per-device SBT alignment is mandatory. Document.

Related reading

• Fix: Vulkan Shader Binding Table Too Large Ray Tracing
• Fix: Vulkan Descriptor Set Binding Collision From Shader Modules
• Fix: Vulkan Descriptor Set Binding Validation Error
• Fix: Vulkan Validation Buffer Device Address Mismatch