c# - 如何使用 SharpDX 绘制文本？

Question

我在互联网上四处寻找代码，试图找到允许我从常规字体(而不是 Sprite 字体)绘制文本的代码，但只找到了对我毫无帮助的片段。

有人有完整的源文件可以让我使用 SharpDX 和 D3D11/DirectWrite 轻松绘制文本吗？我想制作一个透明的覆盖窗口来显示一些信息(比如 Fraps)。我找到了一个这样做的教程，但它使用了 sprite 字体，我希望它可以在大小和字体方面进行自定义。

这是我目前所拥有的:

using System;
using SharpDX;
using SharpDX.Direct3D11;
using SharpDX.Windows;
using SharpDX.Direct2D1;
using SharpDX.DirectWrite;
using SharpDX.DXGI;

namespace SharpDXRenderer
{
    static class Program
    {

        [STAThread]
        static void Main()
        {
            SharpDX.DirectWrite.TextFormat directWriteTextFormat;
            SharpDX.DirectWrite.Factory directWriteFactory;
            SharpDX.Direct2D1.SolidColorBrush directWriteFontColor;
            SharpDX.Direct2D1.RenderTarget direct2DRenderTarget;
            Surface d2dSurface;

            RenderForm form = new RenderForm("Example");

            var desc = new SwapChainDescription()
            {
                BufferCount = 1,//buffer count
                ModeDescription = new ModeDescription(form.ClientSize.Width,     form.ClientSize.Height, new Rational(60, 1), Format.R8G8B8A8_UNorm),//sview
                IsWindowed = true,
                OutputHandle = form.Handle,
                SampleDescription = new SampleDescription(1, 0),
                SwapEffect = SwapEffect.Discard,
                Usage = Usage.RenderTargetOutput
            };



            var d2dFactory = new SharpDX.Direct2D1.Factory();
            d2dSurface = backBuffer.QueryInterface<Surface>();

            direct2DRenderTarget = new SharpDX.Direct2D1.RenderTarget(d2dFactory, d2dSurface, new     SharpDX.Direct2D1.RenderTargetProperties(new     SharpDX.Direct2D1.PixelFormat(Format.Unknown,     SharpDX.Direct2D1.AlphaMode.Premultiplied)));

            directWriteFactory = new SharpDX.DirectWrite.Factory();

            directWriteTextFormat = new SharpDX.DirectWrite.TextFormat(directWriteFactory, "Calibri", 12) {     TextAlignment = SharpDX.DirectWrite.TextAlignment.Leading, ParagraphAlignment =     SharpDX.DirectWrite.ParagraphAlignment.Near };

            directWriteFontColor = new SharpDX.Direct2D1.SolidColorBrush(direct2DRenderTarget, Color.White);
        }
    }
}

我知道我缺少一个 SwapChain、一个 Device 和一个 Texture，但我不确定我是否需要更多东西。这个 backBuffer 是我所缺少的，但我不知道它是什么类型。

d2dSurface = backBuffer.QueryInterface<Surface>();

感谢任何有关文本和基本形状绘图的帮助。

提前致谢。

Answer 1

我是 SharpDx 的新手，所以对我的建议持保留态度，但我正在使用 SharpDX.Direct2D1.DeviceContext 在我的应用程序中呈现文本。我的理解是 Direct2D 使文本相对容易呈现。 (至少在 2d 中)https://github.com/spazzarama/Direct3D-Rendering-Cookbook 有很多例子/细节。 (与同名的 SharpDx 书籍相关联)

context2D.DrawText("myTextHere", _textFormat, new RectangleF(0, 0, 100, 100), _gradeLines[ii].ForegroundBrush);