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fix(renderer): optimize font caching in G2DDrawFont for improved performance

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extio-de
2026-01-04 14:11:49 +01:00
parent e821f824b4
commit 54f457fb67
1 changed files with 9 additions and 1 deletions
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10
src/main/java/de/extio/game_engine/renderer/g2d/bo/rendering/G2DDrawFont.java
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@@ -7,6 +7,7 @@ import java.awt.Shape;
import java.awt.font.TextAttribute;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.atomic.AtomicReference;
import org.springframework.context.annotation.Conditional;
import org.springframework.stereotype.Component;
@@ -214,6 +215,8 @@ public class G2DDrawFont extends G2DAbstractRenderingBo implements DrawFontRende
graphics.drawString(text, (int) (x * scaleFactor), (int) (y * scaleFactor) + textDim.getY());
}
private static final AtomicReference<Font> cachedFontRef = new AtomicReference<>();
public static CoordI2 getTextDimensions(final String text, final Graphics graphics, final int size_, final double scaleFactor) {
if (text == null) {
return ImmutableCoordI2.one();
@@ -221,7 +224,12 @@ public class G2DDrawFont extends G2DAbstractRenderingBo implements DrawFontRende
final var size = size_ == 0 ? FONT_SIZE_DEFAULT : size_;
final var sizeScaled = Math.max(FONT_SIZE_MIN, (float) (size * scaleFactor));
final var font = baseFont.deriveFont(sizeScaled);
final var font = cachedFontRef.updateAndGet(existingFont -> {
if (existingFont == null || existingFont.getSize2D() != sizeScaled) {
return baseFont.deriveFont(sizeScaled);
}
return existingFont;
});
final var gv = font.layoutGlyphVector(((Graphics2D) graphics).getFontRenderContext(), text.toCharArray(), 0, text.length(), Font.LAYOUT_LEFT_TO_RIGHT);
final var pixBounds = gv.getPixelBounds(((Graphics2D) graphics).getFontRenderContext(), 0, 0);
return MutableCoordI2.create(pixBounds.x + pixBounds.width, pixBounds.height - (int) pixBounds.getMaxY());