Vulkan Compute Example

Simple (but complete) example of Vulkan use for GPGPU computing. Saxpy kernel computation on 2d arrays.

Features covered:

• Vulkan boilerplate setup using vulkan-hpp
• data copy between host and device-local memory
• passing array parameters to shader (layout bindings)
• passing non-array parameters to shader (push constants)
• define workgroup dimensions (specialization constants)
• very simple glsl shader (saxpy)
• glsl to spir-v compilation (build time)

This was an attempt to structure the Vulkan compute code in a way that would be easy to modify for each particular use case. I think I failed here so this example still sucks. But I learned while doing this and as a result there is a vuh Vulkan compute library which enables you to do the same but in (literally) 10 lines of code. You're cordially invited to use that instead.

Dependencies

• c++14 compatible compiler
• cmake
• vulkan-headers
• vulkan-hpp
• glslang
• catch2 (optional)
• sltbench (optional)