Debugging Vulkan shaders, especially compute shaders, can be very difficult to do even with the aid of a powerful debugging tool like RenderDoc. Debug Printf is a recent Vulkan feature that allows developers to debug their shaders by inserting Debug Print statements. This feature is now supported within RenderDoc in a way that allows for per-invocation inspection of values in a shader. This white paper describes how to instrument your GLSL or HLSL shaders with Debug Printf and how to inspect and debug with them in RenderDoc, using vkconfig, or with environment variables.
Using Vulkan Debug Printf
