add-vulkan-test

name: add-vulkan-test description: Add a Vulkan test or microbenchmark metadata: short-description: Add a Vulkan test

Add A New Vulkan Test

• Create source src/vulkan_<name>.cpp and a bench file benchmarking/vulkan_<name>.bench.
• Register the test in CMakeLists.txt with vulkan_test(<name>) (or vulkan_window_test if it uses a surface).
• Build with 'make -j6'
• Run from build directory without GPU: ./vulkan_<name> -v --cpu.
• Run from build directory with GPU: ./vulkan_<name> -v --gpu.
• Fix any Vulkan validation errors shown in the output from the above runs.
• Use the check() function to test Vulkan call return values. Put it on a separate line after the Vulkan call. Do not wrap the Vulkan call.
• If asked to test an extension you are not familiar with, download the extension text from https://docs.vulkan.org/refpages/latest/refpages/source/<extension name>.html and read it.

Minimal src/vulkan_<name>.cpp:

#include "vulkan_common.h"

int main(int argc, char** argv)
{
    vulkan_req_t reqs{};                       // Optional: set reqs.usage/cmdopt
    auto vk = test_init(argc, argv, "vulkan_<name>", reqs);
    bench_start_iteration(vk.bench);           // Start one deterministic iteration
    // ... do work here ...
    bench_stop_iteration(vk.bench);
    test_done(vk);
    return 0;
}

Minimal benchmarking/vulkan_<name>.bench:

{ "name": "vulkan_<name>", "description": "<short description of test>" }

Add a new shader file for Vulkan

• Shaders shall be in separate files with extension giving their type, eg .comp for compute shaders, like vulkan_<name>.<ext>.
• Generate SPIRV from the GLSL source code with glslangValidator -V vulkan_<name>.<ext> -o vulkan_<name>_<ext>.spirv
• Then generate an include file with xxd -i vulkan_<name>_<ext>.spirv > vulkan_<name>_<ext>.inc
• Include this file in the C++ source code with #include "vulkan_<name>_<ext>.inc"