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, 41 insertions, 0 deletions

diff --git a/tools/slang-test/slang-test-main.cpp b/tools/slang-test/slang-test-main.cpp
index 5db82fcb7..10bc99017 100644
--- a/tools/slang-test/slang-test-main.cpp
+++ b/tools/slang-test/slang-test-main.cpp
@@ -1391,6 +1391,47 @@ static RenderApiFlags _getAvailableRenderApiFlags(TestContext* context)
             }
         }
 
+        // After determining available APIs, print adapter info for each one
+        if (context->options.showAdapterInfo && availableRenderApiFlags)
+        {
+            StdWriters::getOut().print("\nAdapter Information for Available APIs:\n");
+            for (int i = 0; i < int(RenderApiType::CountOf); ++i)
+            {
+                const RenderApiType apiType = RenderApiType(i);
+                const RenderApiFlags apiFlag = RenderApiFlags(1) << int(apiType);
+
+                if (availableRenderApiFlags & apiFlag)
+                {
+                    // Create command line to query adapter info
+                    CommandLine cmdLine;
+                    cmdLine.setExecutableLocation(
+                        ExecutableLocation(context->options.binDir, "render-test"));
+
+                    // Add the API type
+                    StringBuilder builder;
+                    builder << "-" << RenderApiUtil::getApiName(apiType);
+                    cmdLine.addArg(builder);
+
+                    // Add flags to show adapter info and only startup
+                    cmdLine.addArg("-show-adapter-info");
+                    cmdLine.addArg("-only-startup");
+
+                    // Run render-test to get adapter info
+                    ExecuteResult exeRes;
+                    if (SLANG_SUCCEEDED(
+                            spawnAndWaitSharedLibrary(context, "adapter-info", cmdLine, exeRes)))
+                    {
+                        // Output the adapter info
+                        StdWriters::getOut().print(
+                            "\n%s:\n%s",
+                            RenderApiUtil::getApiName(apiType).begin(),
+                            exeRes.standardOutput.getBuffer());
+                    }
+                }
+            }
+            StdWriters::getOut().print("\n");
+        }
+
         context->availableRenderApiFlags = availableRenderApiFlags;
         context->isAvailableRenderApiFlagsValid = true;
     }