Add support for bigger UBOs, fix sRGB regression, small improvement t… (#503)

* Add support for bigger UBOs, fix sRGB regression, small improvement to the 2D copy engine

* Break into multiple lines

* Read fractions for source/step values on the 2d copy engine aswell

* Use fixed point math for more speed

* Fix reinterpret when texture sizes are different

Ryujinx.Graphics/Gal/OpenGL/OGLLimit.cs

@@ -0,0 +1,12 @@
+using OpenTK.Graphics.OpenGL;
+using System;
+
+namespace Ryujinx.Graphics.Gal.OpenGL
+{
+    static class OGLLimit
+    {
+        private static Lazy<int> s_MaxUboSize = new Lazy<int>(() => GL.GetInteger(GetPName.MaxUniformBlockSize));
+
+        public static int MaxUboSize => s_MaxUboSize.Value;
+    }
+}