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Replace per-color font caches with tinted rendering.

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This commit is contained in:
Paul Chote
2020-08-23 17:58:44 +01:00
committed by teinarss
parent a405969199
commit 6cfa27c33b
1 changed files with 40 additions and 47 deletions
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87
OpenRA.Game/Graphics/SpriteFont.cs
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@@ -23,8 +23,8 @@ namespace OpenRA.Graphics
readonly SheetBuilder builder;
readonly Func<string, float> lineWidth;
readonly IFont font;
readonly Cache<(char C, Color Color), GlyphInfo> glyphs;
readonly Cache<(char, Color, int), Sprite> contrastGlyphs;
readonly Cache<char, GlyphInfo> glyphs;
readonly Cache<(char C, int Radius), Sprite> contrastGlyphs;
readonly Cache<int, float[]> dilationElements;
float deviceScale;
@@ -39,17 +39,20 @@ namespace OpenRA.Graphics
this.builder = builder;
font = Game.Renderer.CreateFont(data);
glyphs = new Cache<(char, Color), GlyphInfo>(CreateGlyph);
contrastGlyphs = new Cache<(char, Color, int), Sprite>(CreateContrastGlyph);
glyphs = new Cache<char, GlyphInfo>(CreateGlyph);
contrastGlyphs = new Cache<(char, int), Sprite>(CreateContrastGlyph);
dilationElements = new Cache<int, float[]>(CreateCircularWeightMap);
// PERF: Cache these delegates for Measure calls.
Func<char, float> characterWidth = character => glyphs[(character, Color.White)].Advance;
Func<char, float> characterWidth = character => glyphs[character].Advance;
lineWidth = line => line.Sum(characterWidth) / deviceScale;
// Pre-cache small font sizes so glyphs are immediately available when we need them
if (size <= 24)
PrecacheColor(Color.White, name);
using (new PerfTimer("Precache {0} {1}px".F(name, size)))
for (var n = (char)0x20; n < (char)0x7f; n++)
if (glyphs[n] == null)
throw new InvalidOperationException();
TopOffset = size - ascender;
}
@@ -61,14 +64,6 @@ namespace OpenRA.Graphics
contrastGlyphs.Clear();
}
void PrecacheColor(Color c, string name)
{
using (new PerfTimer("PrecacheColor {0} {1}px {2}".F(name, size, c)))
for (var n = (char)0x20; n < (char)0x7f; n++)
if (glyphs[(n, c)] == null)
throw new InvalidOperationException();
}
void DrawTextContrast(string text, float2 location, Color contrastColor, int contrastOffset)
{
// Offset from the baseline position to the top-left of the glyph for rendering
@@ -78,6 +73,7 @@ namespace OpenRA.Graphics
var screenContrast = (int)(contrastOffset * deviceScale);
var screen = new int2((int)(location.X * deviceScale + 0.5f), (int)(location.Y * deviceScale + 0.5f));
var contrastVector = new float2(screenContrast, screenContrast);
var tint = new float3(contrastColor.R / 255f, contrastColor.G / 255f, contrastColor.B / 255f);
foreach (var s in text)
{
if (s == '\n')
@@ -87,15 +83,16 @@ namespace OpenRA.Graphics
continue;
}
var g = glyphs[(s, Color.Black)];
var g = glyphs[s];
// Convert screen coordinates back to UI coordinates for drawing
if (g.Sprite != null)
{
var contrastSprite = contrastGlyphs[(s, contrastColor, screenContrast)];
Game.Renderer.RgbaSpriteRenderer.DrawSprite(contrastSprite,
var contrastSprite = contrastGlyphs[(s, screenContrast)];
Game.Renderer.RgbaSpriteRenderer.DrawSpriteWithTint(contrastSprite,
(screen + g.Offset - contrastVector) / deviceScale,
contrastSprite.Size / deviceScale);
contrastSprite.Size / deviceScale,
tint);
}
screen += new int2((int)(g.Advance + 0.5f), 0);
@@ -109,6 +106,7 @@ namespace OpenRA.Graphics
// Calculate positions in screen pixel coordinates
var screen = new int2((int)(location.X * deviceScale + 0.5f), (int)(location.Y * deviceScale + 0.5f));
var tint = new float3(c.R / 255f, c.G / 255f, c.B / 255f);
foreach (var s in text)
{
if (s == '\n')
@@ -118,13 +116,14 @@ namespace OpenRA.Graphics
continue;
}
var g = glyphs[(s, c)];
var g = glyphs[s];
// Convert screen coordinates back to UI coordinates for drawing
if (g.Sprite != null)
Game.Renderer.RgbaSpriteRenderer.DrawSprite(g.Sprite,
Game.Renderer.RgbaSpriteRenderer.DrawSpriteWithTint(g.Sprite,
(screen + g.Offset).ToFloat2() / deviceScale,
g.Sprite.Size / deviceScale);
g.Sprite.Size / deviceScale,
tint);
screen += new int2((int)(g.Advance + 0.5f), 0);
}
@@ -144,6 +143,7 @@ namespace OpenRA.Graphics
var offset = new float2(0, size);
var cosa = (float)Math.Cos(-angle);
var sina = (float)Math.Sin(-angle);
var tint = new float3(c.R / 255f, c.G / 255f, c.B / 255f);
var p = offset;
foreach (var s in text)
@@ -155,7 +155,7 @@ namespace OpenRA.Graphics
continue;
}
var g = glyphs[(s, c)];
var g = glyphs[s];
if (g.Sprite != null)
{
var tl = new float2(
@@ -172,11 +172,12 @@ namespace OpenRA.Graphics
// Offset rotated glyph to align the top-left corner with the screen pixel grid
var screenOffset = new float2((int)(ra.X * deviceScale + 0.5f), (int)(ra.Y * deviceScale + 0.5f)) / deviceScale - ra;
Game.Renderer.RgbaSpriteRenderer.DrawSprite(g.Sprite,
Game.Renderer.RgbaSpriteRenderer.DrawSpriteWithTint(g.Sprite,
ra + screenOffset,
rb + screenOffset,
rc + screenOffset,
rd + screenOffset);
rd + screenOffset,
tint);
}
p += new float2(g.Advance / deviceScale, 0);
@@ -241,10 +242,9 @@ namespace OpenRA.Graphics
return new int2((int)Math.Ceiling(lines.Max(lineWidth)), lines.Length * size);
}
GlyphInfo CreateGlyph((char C, Color Color) c)
GlyphInfo CreateGlyph(char c)
{
var glyph = font.CreateGlyph(c.C, size, deviceScale);
var glyph = font.CreateGlyph(c, size, deviceScale);
if (glyph.Data == null)
{
return new GlyphInfo
@@ -274,12 +274,10 @@ namespace OpenRA.Graphics
if (p != 0)
{
var q = destStride * (j + s.Bounds.Top) + 4 * (i + s.Bounds.Left);
var pmc = Util.PremultiplyAlpha(Color.FromArgb(p, c.Color));
dest[q] = pmc.B;
dest[q + 1] = pmc.G;
dest[q + 2] = pmc.R;
dest[q + 3] = pmc.A;
dest[q] = p;
dest[q + 1] = p;
dest[q + 2] = p;
dest[q + 3] = p;
}
}
}
@@ -347,16 +345,12 @@ namespace OpenRA.Graphics
return elem;
}
Sprite CreateContrastGlyph((char, Color, int) c)
Sprite CreateContrastGlyph((char C, int Radius) c)
{
// Source glyph color doesn't matter, so use black
var glyph = glyphs[(c.Item1, Color.Black)];
var color = c.Item2;
var r = c.Item3;
var glyph = glyphs[c.C];
var r = c.Radius;
var size = new Size(glyph.Sprite.Bounds.Width + 2 * r, glyph.Sprite.Bounds.Height + 2 * r);
var s = builder.Allocate(size);
var s = builder.Allocate(new Size(glyph.Sprite.Bounds.Width + 2 * r, glyph.Sprite.Bounds.Height + 2 * r));
var dest = s.Sheet.GetData();
var destStride = s.Sheet.Size.Width * 4;
@@ -398,11 +392,10 @@ namespace OpenRA.Graphics
if (alpha > 0)
{
var q = destStride * (j + s.Bounds.Top) + 4 * (i + s.Bounds.Left);
var pmc = Util.PremultiplyAlpha(Color.FromArgb(alpha, color));
dest[q] = pmc.B;
dest[q + 1] = pmc.G;
dest[q + 2] = pmc.R;
dest[q + 3] = pmc.A;
dest[q] = alpha;
dest[q + 1] = alpha;
dest[q + 2] = alpha;
dest[q + 3] = alpha;
}
}
}