Remove unnecessary check and adust server count etc. in CI (#8374)

- This PR removes "wasm" check from the test job, since there is no test
job for "wasm" yet.
- Also, move the check for slang-rhi and slangpy test to the job level
to skip the setup etc. if no run is needed.
- Update the macos compiler version in building.md to match the clang
compiler used in CI.
- Reduce the server count in Linux and Mac when running slang-test to
ease the machine load
- Run slangpy test with `-n auto --maxprocesses=4` to speed up

---------

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

1 files changed, 46 insertions, 15 deletions

diff --git a/.github/actions/common-test-setup/action.yml b/.github/actions/common-test-setup/action.yml
index ab1a665c7..3fc6dd617 100644
--- a/.github/actions/common-test-setup/action.yml
+++ b/.github/actions/common-test-setup/action.yml
@@ -40,13 +40,8 @@ runs:
         chmod +x github_artifact/${cmake_config}/bin/* 2>/dev/null || echo "No executables to make executable"
 
         # Set up bin_dir based on platform and config
-        if [[ "${{ inputs.platform }}" == "wasm" ]]; then
-          bin_dir=build.em/Release/bin
-          echo "bin_dir=$bin_dir" >> $GITHUB_ENV
-        else
-          bin_dir=$(pwd)/github_artifact/${cmake_config}/bin
-          echo "bin_dir=$bin_dir" >> $GITHUB_ENV
-        fi
+        bin_dir=$(pwd)/github_artifact/${cmake_config}/bin
+        echo "bin_dir=$bin_dir" >> $GITHUB_ENV
 
         # Also set lib_dir for slangpy tests
         lib_dir=$(pwd)/github_artifact/${cmake_config}/lib
@@ -61,21 +56,57 @@ runs:
           # On Windows, DLLs should be in the same directory as executables or in PATH
           # Use $GITHUB_PATH instead of $PATH for preservation across steps and
           # avoid unix-like/windows-like path issues
-          echo "$bin_dir" >> $GITHUB_PATH
-          echo "$lib_dir" >> $GITHUB_PATH
+          # echo "$bin_dir" >> $GITHUB_PATH
+          # echo "$lib_dir" >> $GITHUB_PATH
+          echo "skipping setting PATH in Windows"
         fi
 
+        # List directory contents
+        echo "Contents of bin_dir ($bin_dir):"
+        ls -a "$bin_dir" 2>/dev/null || echo "bin_dir not found"
+        echo "Contents of lib_dir ($lib_dir):"
+        ls -a "$lib_dir" 2>/dev/null || echo "lib_dir not found"
+
     - name: Check runtime environment
-      if: inputs.platform != 'wasm'
       shell: bash
       run: |
-        echo "$bin_dir/slang-test"
-        "$bin_dir/slang-test" tests/render/check-backend-support-on-ci.slang
-        smokeResult=$("$bin_dir/slang-test" tests/render/check-backend-support-on-ci.slang)
+        echo "Checking supported backends"
+        # Capture the output of slang-test while also displaying it
+        if ! smokeResult=$("$bin_dir/slang-test" tests/render/check-backend-support-on-ci.slang 2>&1); then
+          echo "❌ ERROR: slang-test failed to run"
+          echo "Output: $smokeResult"
+          exit 1
+        fi
         supportedBackends="$(echo "$smokeResult" | grep 'Supported backends: ')"
+        echo "$smokeResult"
         echo "$supportedBackends"
-        # Windows-specific version checks - fail if tools are not available
-        if [[ "${{ inputs.os }}" == "windows" ]]; then
+
+        # Check if the output contains "llvm" (case-insensitive)
+        if echo "$supportedBackends" | grep -qi "llvm"; then
+          echo "✅ LLVM backend support detected"
+        else
+          echo "❌ ERROR: LLVM backend support not detected - this is required to run the filecheck!"
+        fi
+
+        # Function to check API support
+        check_api_support() {
+          local api_list=("$@")
+          for api in "${api_list[@]}"; do
+            if echo "$smokeResult" | grep -qi "${api}: Supported"; then
+              echo "✅ ${api} API support detected"
+            else
+              echo "❌ ${api} API support not detected"
+              exit 1
+            fi
+          done
+        }
+
+        # Platform-specific API checks - fail if APIs are not available
+        if [[ "${{ inputs.os }}" == "macos" ]]; then
+          check_api_support "mtl,metal"
+        elif [[ "${{ inputs.os }}" == "windows" ]]; then
+          check_api_support "vk,vulkan" "dx12,d3d12" "dx11,d3d11" "cuda"
+
           echo "Printing CUDA compiler version: ..."
           nvcc --version || (echo "ERROR: CUDA compiler (nvcc) not available on Windows" && exit 1)
           echo "Printing GPU driver version: ..."