Show adapter info in slang-test (#6388)

When -show-adapter-info is provided to slang-test, there is a subsequent pass over all available APIs to ask render-api to show which adapter will be used.

> .\slang-test.exe -show-adapter-info
Supported backends: fxc dxc glslang spirv-dis clang visualstudio genericcpp nvrtc llvm spirv-opt tint
Check vk,vulkan: Supported
Check dx12,d3d12: Supported
Check dx11,d3d11: Supported
Check cuda: Supported
Check wgpu,webgpu: Supported

Adapter Information for Available APIs:

vk,vulkan:
Using graphics adapter: NVIDIA RTX A3000 Laptop GPU

dx12,d3d12:
Using graphics adapter: NVIDIA RTX A3000 Laptop GPU

dx11,d3d11:
Using graphics adapter: Intel(R) UHD Graphics

cpu:

cuda:

wgpu,webgpu:
Using graphics adapter: default

passed test: 'tests/autodiff/arithmetic-jvp.slang (dx11)'
...

closes #5600

* format code

---------

Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/tools/slang-test/options.cpp b/tools/slang-test/options.cpp
index 9dd831afa..b3f4bdc10 100644
--- a/tools/slang-test/options.cpp
+++ b/tools/slang-test/options.cpp
@@ -336,6 +336,10 @@ static bool _isSubCommand(const char* arg)
             }
             optionsOut->testDir = *argCursor++;
         }
+        else if (strcmp(arg, "-show-adapter-info") == 0)
+        {
+            optionsOut->showAdapterInfo = true;
+        }
         else
         {
             stdError.print("unknown option '%s'\n", arg);