CI: add cuda build

.github/workflows/cuda-build.yml

@@ -0,0 +1,46 @@
+name: build and render
+
+on:
+  push:
+    branches: [ "*" ]
+  pull_request:
+    branches: [ "*" ]
+  workflow_dispatch:
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  cuda-build:
+    strategy:
+      fail-fast: false
+      matrix:
+        cuda: [ '11.5.2', '11.6.1', '11.7.0', '12.1.0' ]  # took from PBRT-v4
+
+    name: GPU Build Only (CUDA ${{ matrix.cuda }})
+
+    runs-on: ubuntu-latest
+    steps:
+    - uses: jimver/[email protected]
+      id: cuda-toolkit
+      with:
+        cuda: ${{ matrix.cuda }}
+        method: 'network'
+        sub-packages: '[ "nvcc" ]'
+
+    - name: check NVCC
+      run: nvcc -V
+
+    - uses: actions/checkout@v4
+      with:
+        submodules: true
+
+    - name: Get cmake
+      uses: lukka/get-cmake@latest
+
+    - name: build
+      run:
+        mkdir build
+        cd build
+        cmake ..
+        make -j