Initial work

Ryujinx.Graphics.OpenGL/HwCapabilities.cs

@@ -0,0 +1,27 @@
+using OpenTK.Graphics.OpenGL;
+using System;
+
+namespace Ryujinx.Graphics.OpenGL
+{
+    static class HwCapabilities
+    {
+        private static Lazy<bool> _astcCompression = new Lazy<bool>(() => HasExtension("GL_KHR_texture_compression_astc_ldr"));
+
+        public static bool SupportsAstcCompression => _astcCompression.Value;
+
+        private static bool HasExtension(string name)
+        {
+            int numExtensions = GL.GetInteger(GetPName.NumExtensions);
+
+            for (int extension = 0; extension < numExtensions; extension++)
+            {
+                if (GL.GetString(StringNameIndexed.Extensions, extension) == name)
+                {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+    }
+}