Add workflow for building test across plantforms & pytorch & CUDA

.github/workflows/building.yml

@@ -0,0 +1,139 @@
+name: Building Wheels
+
+on: [workflow_dispatch]
+
+jobs:
+
+  wheel:
+    runs-on: ${{ matrix.os }}
+    environment: production
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-20.04, windows-2019]
+        # support version based on: https://download.pytorch.org/whl/torch/
+        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11']
+        torch-version: [1.11.0, 1.12.0, 1.13.0, 2.0.0]
+        cuda-version: ['cu113', 'cu115', 'cu116', 'cu117', 'cu118']
+        exclude:
+          - torch-version: 1.11.0
+            python-version: '3.11'
+          - torch-version: 1.11.0
+            cuda-version: 'cu116'
+          - torch-version: 1.11.0
+            cuda-version: 'cu117'
+          - torch-version: 1.11.0
+            cuda-version: 'cu118'
+
+          - torch-version: 1.12.0
+            python-version: '3.11'
+          - torch-version: 1.12.0
+            cuda-version: 'cu115'
+          - torch-version: 1.12.0
+            cuda-version: 'cu117'
+          - torch-version: 1.12.0
+            cuda-version: 'cu118'
+
+          - torch-version: 1.13.0
+            cuda-version: 'cu102'
+          - torch-version: 1.13.0
+            cuda-version: 'cu113'
+          - torch-version: 1.13.0
+            cuda-version: 'cu115'
+          - torch-version: 1.13.0
+            cuda-version: 'cu118'
+
+          - torch-version: 2.0.0
+            python-version: '3.7'
+          - torch-version: 2.0.0
+            cuda-version: 'cu102'
+          - torch-version: 2.0.0
+            cuda-version: 'cu113'
+          - torch-version: 2.0.0
+            cuda-version: 'cu115'
+          - torch-version: 2.0.0
+            cuda-version: 'cu116'
+
+          - os: windows-2019
+            cuda-version: 'cu102'
+          - os: windows-2019
+            torch-version: 1.13.0
+            python-version: '3.11'
+
+          # - os: windows-2019
+          #   torch-version: 1.13.0
+          #   cuda-version: 'cu117'
+          #   python-version: '3.9'
+
+
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Upgrade pip
+        run: |
+          pip install --upgrade setuptools
+          pip install ninja
+
+      - name: Free up disk space
+        if: ${{ runner.os == 'Linux' }}
+        run: |
+          sudo rm -rf /usr/share/dotnet
+
+      - name: Install CUDA ${{ matrix.cuda-version }}
+        if: ${{ matrix.cuda-version != 'cpu' }}
+        run: |
+          bash .github/workflows/cuda/${{ runner.os }}.sh ${{ matrix.cuda-version }}
+
+      - name: Install PyTorch ${{ matrix.torch-version }}+${{ matrix.cuda-version }}
+        run: |
+          pip install torch==${{ matrix.torch-version }} --extra-index-url https://download.pytorch.org/whl/${{ matrix.cuda-version }}
+          python -c "import torch; print('PyTorch:', torch.__version__)"
+          python -c "import torch; print('CUDA:', torch.version.cuda)"
+          python -c "import torch; print('CUDA Available:', torch.cuda.is_available())"
+
+      - name: Patch PyTorch static constexpr on Windows
+        if: ${{ runner.os == 'Windows' }}
+        run: |
+          Torch_DIR=`python -c 'import os; import torch; print(os.path.dirname(torch.__file__))'`
+          sed -i '31,38c\
+          TORCH_API void lazy_init_num_threads();' ${Torch_DIR}/include/ATen/Parallel.h
+        shell: bash
+
+      - name: Set version
+        if: ${{ runner.os != 'macOS' }}
+        run: |
+          VERSION=`sed -n 's/^__version__ = "\(.*\)"/\1/p' gsplat/version.py`
+          TORCH_VERSION=`echo "pt${{ matrix.torch-version }}" | sed "s/..$//" | sed "s/\.//g"`
+          CUDA_VERSION=`echo ${{ matrix.cuda-version }}`
+          echo "New version name: $VERSION+$TORCH_VERSION$CUDA_VERSION"
+          sed -i "s/$VERSION/$VERSION+$TORCH_VERSION$CUDA_VERSION/" gsplat/version.py
+        shell:
+          bash
+
+      - name: Install main package for CPU
+        if: ${{ matrix.cuda-version == 'cpu' }}
+        run: |
+          BUILD_NO_CUDA=1 pip install .
+
+      - name: Build wheel
+        run: |
+          pip install wheel
+          source .github/workflows/cuda/${{ runner.os }}-env.sh ${{ matrix.cuda-version }}
+          python setup.py bdist_wheel --dist-dir=dist
+        shell: bash  # `source` does not exist in windows powershell
+
+      - name: Test wheel
+        run: |
+          cd dist
+          ls -lah
+          pip install *.whl
+          python -c "import gsplat; print('gsplat:', gsplat.__version__)"
+          cd ..
+        shell: bash  # `ls -lah` does not exist in windows powershell