diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 1001d74..0093ad1 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -49,7 +49,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Set up .NET 8.0
-        uses: actions/setup-dotnet@v3
+        uses: actions/setup-dotnet@v4
         with:
           dotnet-version: 8.x
       
diff --git a/.github/workflows/dotnet.yml b/.github/workflows/dotnet.yml
index aac3f76..af233a5 100644
--- a/.github/workflows/dotnet.yml
+++ b/.github/workflows/dotnet.yml
@@ -37,7 +37,7 @@ jobs:
           fetch-depth: 0 # Get all history to allow automatic versioning using MinVer
 
       - name: Setup .NET
-        uses: actions/setup-dotnet@v3
+        uses: actions/setup-dotnet@v4
         with:
           dotnet-version: ${{ matrix.dotnet-version }}.x
             
@@ -45,9 +45,7 @@ jobs:
         run: dotnet restore
 
       - name: Build
-        run: |
-          dotnet restore
-          dotnet build -c Release --no-restore --framework net${{ matrix.dotnet-version }}.0
+        run: dotnet build -c Release --no-restore --framework net${{ matrix.dotnet-version }}.0
 
       - name: Test
         run: dotnet test -c Release --no-build --verbosity normal --framework net${{ matrix.dotnet-version }}.0
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index a849a60..f00fc9f 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -33,7 +33,7 @@ jobs:
           fetch-depth: 0 # Get all history to allow automatic versioning using MinVer
 
       - name: Setup Dotnet
-        uses: actions/setup-dotnet@v3
+        uses: actions/setup-dotnet@v4
         with:
           dotnet-version: '8.x'
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 7f14ed1..2e75fbe 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -15,7 +15,7 @@ jobs:
           fetch-depth: 0 # Get all history to allow automatic versioning using MinVer
 
       - name: Setup Dotnet
-        uses: actions/setup-dotnet@v3
+        uses: actions/setup-dotnet@v4
         with:
           dotnet-version: '8.x'
 
diff --git a/src/DotRecast.Recast.Demo/DotRecast.Recast.Demo.csproj b/src/DotRecast.Recast.Demo/DotRecast.Recast.Demo.csproj
index 15c6da7..b231327 100644
--- a/src/DotRecast.Recast.Demo/DotRecast.Recast.Demo.csproj
+++ b/src/DotRecast.Recast.Demo/DotRecast.Recast.Demo.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFrameworks>net6.0;net7.0;net8.0</TargetFrameworks>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <PackageId>DotRecast.Recast.Demo</PackageId>
     <PackageReadmeFile>README.md</PackageReadmeFile>
diff --git a/src/DotRecast.Recast.Demo/Draw/GLCheckerTexture.cs b/src/DotRecast.Recast.Demo/Draw/GLCheckerTexture.cs
index 061ab23..e044757 100644
--- a/src/DotRecast.Recast.Demo/Draw/GLCheckerTexture.cs
+++ b/src/DotRecast.Recast.Demo/Draw/GLCheckerTexture.cs
@@ -32,15 +32,18 @@ public class GLCheckerTexture
         _gl = gl;
     }
 
-    public void Release()
+    public unsafe void Release()
     {
         if (m_texId != 0)
         {
-            _gl.DeleteTextures(1, m_texId);
+            fixed (uint* p = &m_texId)
+            {
+                _gl.DeleteTextures(1, p);
+            }
         }
     }
 
-    public void Bind()
+    public unsafe void Bind()
     {
         if (m_texId == 0)
         {
@@ -50,7 +53,11 @@ public class GLCheckerTexture
             uint TSIZE = 64;
             int[] data = new int[TSIZE * TSIZE];
 
-            _gl.GenTextures(1, out m_texId);
+            fixed (uint* p = &m_texId)
+            {
+                _gl.GenTextures(1, p);
+            }
+
             _gl.BindTexture(GLEnum.Texture2D, m_texId);
 
             int level = 0;
@@ -70,8 +77,10 @@ public class GLCheckerTexture
                 level++;
             }
 
-            _gl.TexParameterI(GLEnum.Texture2D, GLEnum.TextureMinFilter, (uint)GLEnum.LinearMipmapNearest);
-            _gl.TexParameterI(GLEnum.Texture2D, GLEnum.TextureMagFilter, (uint)GLEnum.Linear);
+            uint linearMipmapNearest = (uint)GLEnum.LinearMipmapNearest;
+            uint linear = (uint)GLEnum.Linear;
+            _gl.TexParameterI(GLEnum.Texture2D, GLEnum.TextureMinFilter, &linearMipmapNearest);
+            _gl.TexParameterI(GLEnum.Texture2D, GLEnum.TextureMagFilter, &linear);
         }
         else
         {