public DrawableFontAtlas GetAtlas(int fontSize, bool pixelFont = false)
{
int hash = HashCode.Combine(fontSize, GlyphRasterizer);
// Check if the atlas is already loaded.
bool found = _loadedAtlases.TryGetValue(hash, out DrawableFontAtlas atlas);
if (found)
{
return(atlas);
}
lock (_loadedAtlases)
{
// Recheck as another thread could have built the atlas while waiting on lock.
found = _loadedAtlases.TryGetValue(hash, out atlas);
if (found)
{
return(atlas);
}
// Get atlas of specified type.
switch (GlyphRasterizer)
{
case GlyphRasterizer.StbTrueType:
atlas = new StbDrawableFontAtlas(Font, fontSize, pixelFont);
break;
case GlyphRasterizer.Emotion:
atlas = new EmotionRendererDrawableFontAtlas(Font, fontSize, pixelFont);
break;
case GlyphRasterizer.EmotionSDFVer3:
atlas = new EmotionSDF3DrawableFontAtlas(Font, fontSize, pixelFont);
break;
case GlyphRasterizer.EmotionSDFVer4:
atlas = new EmotionSDFDrawableFontAtlas(Font, fontSize, pixelFont);
break;
default:
return(null);
}
// Cache default ascii set
atlas.CacheGlyphs(" !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~");
_loadedAtlases.Add(hash, atlas);
}
return(atlas);
}
public void VerifyFontRendering()
{
var fonts = new[]
{
"Junction-Bold.otf", // Cff
"CaslonOS.otf", // Cff 2 (covers other cases)
"1980XX.ttf", // Ttf
"LatoWeb-Regular.ttf", // Composite
"Junction-Bold.otf", // 14 font size
"Junction-Bold.otf" // 11 font size
};
var names = new[]
{
"Junction-Bold",
"CaslonOS-Regular",
"1980XX",
"Lato Regular",
"Junction-Bold",
"Junction-Bold"
};
var unitsPerEm = new[]
{
1000,
1000,
1024,
2000,
1000,
1000
};
int[] descender =
{
-250,
-360,
-128,
-426,
-250,
-250
};
var ascender = new[]
{
750,
840,
682,
1974,
750,
750
};
var glyphs = new[]
{
270,
279,
141,
2164,
270,
270
};
string[] cachedRender =
{
ResultDb.EmotionCffAtlas,
"",
ResultDb.EmotionTtAtlas,
ResultDb.EmotionCompositeAtlas,
"",
""
};
int[] fontSizes =
{
17,
17,
17,
17,
14,
11
};
FrameBuffer b = null;
for (var i = 0; i < fonts.Length; i++)
{
Engine.Log.Info($"Running font {fonts[i]} ({i})...", TestRunnerLogger.TestRunnerSrc);
ReadOnlyMemory <byte> data = Engine.AssetLoader.Get <OtherAsset>($"Fonts/{fonts[i]}")?.Content ?? ReadOnlyMemory <byte> .Empty;
var f = new Font(data);
// Verify basic font data.
Assert.True(f.Valid);
Assert.True(f.FullName == names[i]);
Assert.True(f.UnitsPerEm == unitsPerEm[i]);
Assert.True(f.Descender == descender[i]);
Assert.True(f.Ascender == ascender[i]);
Assert.True(f.CharToGlyph.Count == glyphs[i]);
// Get atlases.
int fontSize = fontSizes[i];
var emotionAtlas = new StbDrawableFontAtlas(f, fontSize, false);
Runner.ExecuteAsLoop(_ =>
{
var str = "";
for (uint j = emotionAtlas.Font.FirstCharIndex; j < emotionAtlas.Font.LastCharIndex; j++)
{
str += (char)j;
}
emotionAtlas.CacheGlyphs(str);
}).WaitOne();
DrawableFontAtlas packedStbAtlas = RenderFontStbPacked(data.ToArray(), fontSize, emotionAtlas.Texture.Size * 3, (int)f.LastCharIndex + 1, f, out StbTrueType.stbtt_fontinfo stbFont);
// Compare glyph parsing.
CompareMetricsWithStb(f, emotionAtlas, stbFont);
// Compare render metrics.
foreach (KeyValuePair <char, DrawableGlyph> g in emotionAtlas.Glyphs)
{
DrawableGlyph glyph = packedStbAtlas.Glyphs[g.Key];
Assert.Equal(glyph.XAdvance, g.Value.XAdvance);
var fontGlyph = g.Value.FontGlyph;
int width = (int)(MathF.Ceiling(fontGlyph.Max.X * emotionAtlas.RenderScale) - MathF.Floor(fontGlyph.Min.X * emotionAtlas.RenderScale));
int height = (int)(MathF.Ceiling(-fontGlyph.Min.Y * emotionAtlas.RenderScale) - MathF.Floor(-fontGlyph.Max.Y * emotionAtlas.RenderScale));
Assert.Equal(glyph.Width, width);
Assert.Equal(glyph.Height, height);
}
// Check if there's a verified render.
if (string.IsNullOrEmpty(cachedRender[i]))
{
continue;
}
// Compare with cached render.
// ReSharper disable AccessToModifiedClosure
Runner.ExecuteAsLoop(_ =>
{
if (b == null)
{
b = new FrameBuffer(emotionAtlas.Texture.Size).WithColor();
}
else
{
b.Resize(emotionAtlas.Texture.Size, true);
}
RenderComposer composer = Engine.Renderer.StartFrame();
composer.RenderToAndClear(b);
composer.RenderSprite(Vector3.Zero, emotionAtlas.Texture.Size, Color.White, emotionAtlas.Texture);
composer.RenderTo(null);
Engine.Renderer.EndFrame();
Runner.VerifyScreenshot(cachedRender[i], b);
}).WaitOne();
}
}
