font scaling tweaks

lib/WellspringCS

@@ -1 +1 @@
-Subproject commit 0ffacd6aec80d94cf45a871bd50c9a9321f4ec0d
+Subproject commit 82093d2b0d4ee8510820213cbcd248418528a88c

src/Graphics/Font/Font.cs

@@ -8,6 +8,7 @@ namespace MoonWorks.Graphics.Font
 	public unsafe class Font : IDisposable
 	{
 		public Texture Texture { get; }
+		public float PixelsPerEm { get; }
 
 		internal IntPtr Handle { get; }
 
@@ -37,7 +38,8 @@ namespace MoonWorks.Graphics.Font
 				(IntPtr) fontFileByteBuffer,
 				(uint) fontFileByteSpan.Length,
 				(IntPtr) atlasFileByteBuffer,
-				(uint) atlasFileByteSpan.Length
+				(uint) atlasFileByteSpan.Length,
+				out float pixelsPerEm
 			);
 
 			var texture = Texture.FromImageFile(graphicsDevice, commandBuffer, Path.ChangeExtension(fontPath, ".png"));
@@ -45,13 +47,14 @@ namespace MoonWorks.Graphics.Font
 			NativeMemory.Free(fontFileByteBuffer);
 			NativeMemory.Free(atlasFileByteBuffer);
 
-			return new Font(handle, texture);
+			return new Font(handle, texture, pixelsPerEm);
 		}
 
-		private Font(IntPtr handle, Texture texture)
+		private Font(IntPtr handle, Texture texture, float pixelsPerEm)
 		{
 			Handle = handle;
 			Texture = texture;
+			PixelsPerEm = pixelsPerEm;
 
 			StringBytesLength = 32;
 			StringBytes = (byte*) NativeMemory.Alloc((nuint) StringBytesLength);
@@ -59,8 +62,7 @@ namespace MoonWorks.Graphics.Font
 
 		public unsafe bool TextBounds(
 			string text,
-			float x,
-			float y,
+			int pixelSize,
 			HorizontalAlignment horizontalAlignment,
 			VerticalAlignment verticalAlignment,
 			out Wellspring.Rectangle rectangle
@@ -78,8 +80,7 @@ namespace MoonWorks.Graphics.Font
 
 				var result = Wellspring.Wellspring_TextBounds(
 					Handle,
-					x,
-					y,
+					pixelSize,
 					(Wellspring.HorizontalAlignment) horizontalAlignment,
 					(Wellspring.VerticalAlignment) verticalAlignment,
 					(IntPtr) StringBytes,

src/Graphics/Font/TextBatch.cs

@@ -17,7 +17,7 @@ namespace MoonWorks.Graphics.Font
 		public Buffer IndexBuffer { get; protected set; } = null;
 		public uint PrimitiveCount { get; protected set; }
 
-		private Font CurrentFont;
+		public Font CurrentFont { get; private set; }
 
 		private byte* StringBytes;
 		private int StringBytesLength;
@@ -47,6 +47,7 @@ namespace MoonWorks.Graphics.Font
 			string text,
 			float x,
 			float y,
+			int pixelSize,
 			float depth,
 			Color color,
 			HorizontalAlignment horizontalAlignment = HorizontalAlignment.Left,
@@ -67,6 +68,7 @@ namespace MoonWorks.Graphics.Font
 					Handle,
 					x,
 					y,
+					pixelSize,
 					depth,
 					new Wellspring.Color { R = color.R, G = color.G, B = color.B, A = color.A },
 					(Wellspring.HorizontalAlignment) horizontalAlignment,