MoonWorks/src/Graphics/Font/Packer.cs

77 lines
2.1 KiB
C#

using System;
using System.IO;
using System.Runtime.InteropServices;
using WellspringCS;
namespace MoonWorks.Graphics.Font
{
public class Packer : IDisposable
{
public IntPtr Handle { get; }
public Texture Texture { get; }
private bool IsDisposed;
public unsafe Packer(GraphicsDevice graphicsDevice, string path, uint textureWidth, uint textureHeight, uint padding = 1)
{
var bytes = File.ReadAllBytes(path);
fixed (byte* pByte = &bytes[0])
{
Handle = Wellspring.Wellspring_CreatePacker((IntPtr) pByte, (uint) bytes.Length, textureWidth, textureHeight, 0, padding);
}
Texture = Texture.CreateTexture2D(graphicsDevice, textureWidth, textureHeight, TextureFormat.R8, TextureUsageFlags.Sampler);
}
public unsafe bool PackFontRanges(params FontRange[] fontRanges)
{
fixed (FontRange *pFontRanges = &fontRanges[0])
{
var nativeSize = fontRanges.Length * Marshal.SizeOf<Wellspring.FontRange>();
void* fontRangeMemory = NativeMemory.Alloc((nuint) fontRanges.Length, (nuint) Marshal.SizeOf<Wellspring.FontRange>());
System.Buffer.MemoryCopy(pFontRanges, fontRangeMemory, nativeSize, nativeSize);
var result = Wellspring.Wellspring_PackFontRanges(Handle, (IntPtr) fontRangeMemory, (uint) fontRanges.Length);
NativeMemory.Free(fontRangeMemory);
return result > 0;
}
}
public unsafe void SetTextureData(CommandBuffer commandBuffer)
{
var pixelDataPointer = Wellspring.Wellspring_GetPixelDataPointer(Handle);
commandBuffer.SetTextureData(Texture, pixelDataPointer, Texture.Width * Texture.Height);
}
protected virtual void Dispose(bool disposing)
{
if (!IsDisposed)
{
if (disposing)
{
Texture.Dispose();
}
Wellspring.Wellspring_DestroyPacker(Handle);
IsDisposed = true;
}
}
~Packer()
{
// Do not change this code. Put cleanup code in 'Dispose(bool disposing)' method
Dispose(disposing: false);
}
public void Dispose()
{
// Do not change this code. Put cleanup code in 'Dispose(bool disposing)' method
Dispose(disposing: true);
GC.SuppressFinalize(this);
}
}
}