Check the supported backends in CI (#7346)

slang-test is ran with a simple test, tests/render/check-backend-support-on-ci.slang.
And the github CI,yaml will check if certain keywords are found.
This is to prevent the regression on the CI server where a set of backend was supported at some point and it stopped supporting it siliently.

1 files changed, 30 insertions, 0 deletions

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0d9d0af87..4a2a76011 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -188,6 +188,36 @@ jobs:
       - name: Test Slang
         if: steps.filter.outputs.should-run == 'true' && matrix.platform != 'wasm' && (matrix.platform != 'aarch64' || matrix.os == 'macos')
         run: |
+          smokeResult=$("$bin_dir/slang-test" tests/render/check-backend-support-on-ci.slang)
+          supportedBackends="$(echo "$smokeResult" | grep 'Supported backends: ')"
+
+          # LLVM is required to run the filecheck
+          echo "Checking llvm ..." && echo "$supportedBackends" | grep -q llvm
+
+          if [[ "${{matrix.full-gpu-tests}}" == "true" ]]
+          then
+            for backend in fxc dxc glslang visualstudio genericcpp nvrtc metal tint # clang gcc
+            do
+              echo "Checking $backend ..." && echo "$supportedBackends" | grep -q "$backend"
+            done
+            for api in 'vk,vulkan' 'dx12,d3d12' 'dx11,d3d11' 'cuda' 'wgpu,webgpu'
+            do
+              echo "Checking $api ..." && echo "$smokeResult" | grep -q "Check $api: Supported"
+            done
+          fi
+
+          if [[ "${{matrix.os}}" == "macos" ]]
+          then
+            for backend in metal
+            do
+              echo "Checking $backend ..." && echo "$supportedBackends" | grep -q "$backend"
+            done
+            for api in 'mtl,metal'
+            do
+              echo "Checking $api ..." && echo "$smokeResult" | grep -q "Check $api: Supported"
+            done
+          fi
+
           export SLANG_RUN_SPIRV_VALIDATION=1
           export SLANG_USE_SPV_SOURCE_LANGUAGE_UNKNOWN=1
           if [[ "${{matrix.full-gpu-tests}}" == "true" ]]; then