internal void DrawString(SpriteFont font, string text, ref SpriteFont.InternalUIDrawCommand drawCommand)
{
if (font == null)
{
throw new ArgumentNullException(nameof(font));
}
if (text == null)
{
throw new ArgumentNullException(nameof(text));
}
var proxy = new SpriteFont.StringProxy(text);
// shift the string position so that it is written from the left/top corner of the element
var leftTopCornerOffset = drawCommand.TextBoxSize / 2f;
drawCommand.Matrix.M41 -= drawCommand.Matrix.M11 * leftTopCornerOffset.X + drawCommand.Matrix.M21 * leftTopCornerOffset.Y;
drawCommand.Matrix.M42 -= drawCommand.Matrix.M12 * leftTopCornerOffset.X + drawCommand.Matrix.M22 * leftTopCornerOffset.Y;
drawCommand.Matrix.M43 -= drawCommand.Matrix.M13 * leftTopCornerOffset.X + drawCommand.Matrix.M23 * leftTopCornerOffset.Y;
// do not snap static fonts when real/virtual resolution does not match.
if (!drawCommand.IsFullscreen)
{
// we are drawing in 3D, don't snap or scale
drawCommand.SnapText = false;
drawCommand.RealVirtualResolutionRatio.X = 1f;
drawCommand.RealVirtualResolutionRatio.Y = 1f;
}
else if (font.FontType == SpriteFontType.SDF)
{
drawCommand.SnapText = false;
float scaling = drawCommand.RequestedFontSize / font.Size;
drawCommand.RealVirtualResolutionRatio = 1 / new Vector2(scaling, scaling);
}
else if ((font.FontType == SpriteFontType.Static))
{
if ((drawCommand.RealVirtualResolutionRatio.X != 1 || drawCommand.RealVirtualResolutionRatio.Y != 1))
{
drawCommand.SnapText = false; // we don't want snapping of the resolution of the screen does not match virtual resolution. (character alignment problems)
}
drawCommand.RealVirtualResolutionRatio = Vector2.One; // ensure that static font are not scaled internally
}
// snap draw start position to prevent characters to be drawn in between two pixels
if (drawCommand.SnapText)
{
var invW = 1.0f / drawCommand.Matrix.M44;
var backBufferHalfWidth = GraphicsContext.CommandList.RenderTarget.ViewWidth / 2;
var backBufferHalfHeight = GraphicsContext.CommandList.RenderTarget.ViewHeight / 2;
drawCommand.Matrix.M41 *= invW;
drawCommand.Matrix.M42 *= invW;
drawCommand.Matrix.M41 = (float)(Math.Round(drawCommand.Matrix.M41 * backBufferHalfWidth) / backBufferHalfWidth);
drawCommand.Matrix.M42 = (float)(Math.Round(drawCommand.Matrix.M42 * backBufferHalfHeight) / backBufferHalfHeight);
drawCommand.Matrix.M41 /= invW;
drawCommand.Matrix.M42 /= invW;
}
font.InternalUIDraw(GraphicsContext.CommandList, ref proxy, ref drawCommand);
}
internal void DrawString(SpriteFont font, string text, ref SpriteFont.InternalUIDrawCommand drawCommand)
{
if (font == null)
{
throw new ArgumentNullException(nameof(font));
}
if (text == null)
{
throw new ArgumentNullException(nameof(text));
}
var proxy = new SpriteFont.StringProxy(text);
// shift the string position so that it is written from the left/top corner of the element
var leftTopCornerOffset = drawCommand.TextBoxSize / 2f;
var worldMatrix = drawCommand.Matrix;
worldMatrix.M41 -= worldMatrix.M11 * leftTopCornerOffset.X + worldMatrix.M21 * leftTopCornerOffset.Y;
worldMatrix.M42 -= worldMatrix.M12 * leftTopCornerOffset.X + worldMatrix.M22 * leftTopCornerOffset.Y;
worldMatrix.M43 -= worldMatrix.M13 * leftTopCornerOffset.X + worldMatrix.M23 * leftTopCornerOffset.Y;
// transform the world matrix into the world view project matrix
Matrix.MultiplyTo(ref worldMatrix, ref viewProjectionMatrix, out drawCommand.Matrix);
drawCommand.SnapText = false;
float scaling = drawCommand.RequestedFontSize / font.Size;
drawCommand.RealVirtualResolutionRatio = 1 / new Vector2(scaling, scaling);
// snap draw start position to prevent characters to be drawn in between two pixels
if (drawCommand.SnapText)
{
var invW = 1.0f / drawCommand.Matrix.M44;
var backBufferHalfWidth = GraphicsContext.CommandList.RenderTarget.ViewWidth / 2;
var backBufferHalfHeight = GraphicsContext.CommandList.RenderTarget.ViewHeight / 2;
drawCommand.Matrix.M41 *= invW;
drawCommand.Matrix.M42 *= invW;
drawCommand.Matrix.M41 = (float)(Math.Round(drawCommand.Matrix.M41 * backBufferHalfWidth) / backBufferHalfWidth);
drawCommand.Matrix.M42 = (float)(Math.Round(drawCommand.Matrix.M42 * backBufferHalfHeight) / backBufferHalfHeight);
drawCommand.Matrix.M41 /= invW;
drawCommand.Matrix.M42 /= invW;
}
font.InternalUIDraw(GraphicsContext.CommandList, ref proxy, ref drawCommand);
}