private unsafe DynamicAtlas <Color> .Reservation Upload(FTBitmap bitmap)
{
bool foundRoom = false;
DynamicAtlas <Color> .Reservation result = default(DynamicAtlas <Color> .Reservation);
int width = bitmap.Width, rows = bitmap.Rows, pitch = bitmap.Pitch;
var widthW = width + (Font.GlyphMargin * 2);
var heightW = rows + (Font.GlyphMargin * 2);
foreach (var atlas in Atlases)
{
if (atlas.TryReserve(widthW, heightW, out result))
{
foundRoom = true;
break;
}
}
var surfaceFormat = Font.sRGB ? Evil.TextureUtils.ColorSrgbEXT : SurfaceFormat.Color;
if (!foundRoom)
{
var isFirstAtlas = (Atlases.Count == 0) && (_SizePoints < SmallFirstAtlasThreshold);
var newAtlas = new DynamicAtlas <Color>(
Font.RenderCoordinator, isFirstAtlas ? FirstAtlasWidth : AtlasWidth, isFirstAtlas ? FirstAtlasHeight : AtlasHeight,
surfaceFormat, 4, Font.MipMapping ? PickMipGenerator(Font) : null, tag: $"{Font.Face.FamilyName} {SizePoints}pt"
);
Atlases.Add(newAtlas);
if (!newAtlas.TryReserve(widthW, heightW, out result))
{
throw new InvalidOperationException("Character too large for atlas");
}
}
var pSrc = (byte *)bitmap.Buffer;
fixed(Color *pPixels = result.Atlas.Pixels)
{
var pDest = (byte *)pPixels;
switch (bitmap.PixelMode)
{
case PixelMode.Gray:
var table = Font.GammaRamp?.GammaTable;
var srgb = (surfaceFormat != SurfaceFormat.Color);
for (var y = 0; y < rows; y++)
{
var rowOffset = result.Atlas.Width * (y + result.Y + Font.GlyphMargin) + (result.X + Font.GlyphMargin);
var pDestRow = pDest + (rowOffset * 4);
int yPitch = y * pitch;
if (table == null)
{
for (var x = 0; x < width; x++)
{
var a = pSrc[x + yPitch];
var g = srgb ? ColorSpace.LinearByteTosRGBByteTable[a] : a;
pDestRow[3] = a;
pDestRow[2] = pDestRow[1] = pDestRow[0] = g;
pDestRow += 4;
}
}
else
{
for (var x = 0; x < width; x++)
{
var a = table[pSrc[x + yPitch]];
var g = srgb ? ColorSpace.LinearByteTosRGBByteTable[a] : a;
pDestRow[3] = a;
pDestRow[2] = pDestRow[1] = pDestRow[0] = g;
pDestRow += 4;
}
}
}
break;
case PixelMode.Mono:
for (var y = 0; y < rows; y++)
{
var rowOffset = result.Atlas.Width * (y + result.Y + Font.GlyphMargin) + (result.X + Font.GlyphMargin);
var pDestRow = pDest + (rowOffset * 4);
int yPitch = y * pitch;
for (int x = 0; x < pitch; x++, pDestRow += (8 * 4))
{
var bits = pSrc[x + yPitch];
for (int i = 0; i < 8; i++)
{
int iy = 7 - i;
byte g = ((bits & (1 << iy)) != 0) ? (byte)255 : (byte)0;
var pElt = pDestRow + (i * 4);
pElt[3] = pElt[2] = pElt[1] = pElt[0] = g;
}
}
}
break;
default:
throw new NotImplementedException("Unsupported pixel mode: " + bitmap.PixelMode);
}
}
result.Invalidate();
return(result);
}
private unsafe DynamicAtlas <Color> .Reservation Upload(FTBitmap bitmap)
{
bool foundRoom = false;
DynamicAtlas <Color> .Reservation result = default(DynamicAtlas <Color> .Reservation);
int width = bitmap.Width, rows = bitmap.Rows, pitch = bitmap.Pitch;
var widthW = width + (Font.GlyphMargin * 2);
var heightW = rows + (Font.GlyphMargin * 2);
foreach (var atlas in Atlases)
{
if (atlas.TryReserve(widthW, heightW, out result))
{
foundRoom = true;
break;
}
}
if (!foundRoom)
{
var newAtlas = new DynamicAtlas <Color>(
Font.RenderCoordinator, AtlasWidth, AtlasHeight,
SurfaceFormat.Color, 4, Font.MipMapping ? PickMipGenerator(Font) : null
);
Atlases.Add(newAtlas);
if (!newAtlas.TryReserve(widthW, heightW, out result))
{
throw new InvalidOperationException("Character too large for atlas");
}
}
var pSrc = (byte *)bitmap.Buffer;
fixed(Color *pPixels = result.Atlas.Pixels)
{
var pDest = (byte *)pPixels;
switch (bitmap.PixelMode)
{
case PixelMode.Gray:
var table = Font.GammaTable;
for (var y = 0; y < rows; y++)
{
var rowOffset = result.Atlas.Width * (y + result.Y + Font.GlyphMargin) + (result.X + Font.GlyphMargin);
var pDestRow = pDest + (rowOffset * 4);
int yPitch = y * pitch;
for (var x = 0; x < width; x++)
{
var g = table[pSrc[x + yPitch]];
pDestRow[3] = pDestRow[2] = pDestRow[1] = pDestRow[0] = g;
pDestRow += 4;
}
}
break;
case PixelMode.Mono:
for (var y = 0; y < rows; y++)
{
var rowOffset = result.Atlas.Width * (y + result.Y + Font.GlyphMargin) + (result.X + Font.GlyphMargin);
var pDestRow = pDest + (rowOffset * 4);
int yPitch = y * pitch;
for (int x = 0; x < pitch; x++, pDestRow += (8 * 4))
{
var bits = pSrc[x + yPitch];
for (int i = 0; i < 8; i++)
{
int iy = 7 - i;
byte g = ((bits & (1 << iy)) != 0) ? (byte)255 : (byte)0;
var pElt = pDestRow + (i * 4);
pElt[3] = pElt[2] = pElt[1] = pElt[0] = g;
}
}
}
break;
default:
throw new NotImplementedException("Unsupported pixel mode: " + bitmap.PixelMode);
}
}
return(result);
}