void BuildTexture()
{
FontDef font = ThemeManager.FetchFont(this.font);
PxVector tsize = font.MeasureLine(text);
if (texture != null) texture.Dispose();
if (tsize.X == 0 || tsize.Y == 0) {
texture = new Texture2D(GraphicsManager.device, 1, 1);
return;
}
RenderTarget2D rt = new RenderTarget2D(GraphicsManager.device, tsize.X, tsize.Y, false, SurfaceFormat.Color, DepthFormat.None, 1, RenderTargetUsage.PreserveContents);
RenderTarget2D pop = DrawBatch.Target;
PxVector popOff = DrawBatch.drawOffset;
DrawBatch.Target = rt;
DrawBatch.drawOffset = new PxVector(0, 0);
DrawBatch.Clear(rt, new DrawColor(0f, 0f, 0f, 0f));
float cursor = 0;
for (int i = 0; i < text.Length; i++) {
Vector2 cpos = new Vector2((float)Math.Round(cursor), 0); // pixel align on draw, but retain float accumulation
DrawBatch.Draw(font.Atlas, cpos.FxVector(), new FxVector(0, 0), font.GetGlyph(text[i]).PxRect(), Microsoft.Xna.Framework.Color.White.DrawColor(), 0f, new FxVector(1, 1));
cursor += font.MeasureGlyph(text, i);
}
DrawBatch.Target = null;
DrawBatch.Target = pop;
DrawBatch.drawOffset = popOff;
texture = rt;
}