[engine] 支持高 DPI 渲染

engine/cocos2d/core/components/CCLabel.js

@@ -587,6 +587,13 @@ let Label = cc.Class({
             type: RenderComponent.EnableType,
             default: RenderComponent.EnableType.GLOBAL,
         },
+        enableRetina: {
+            type: RenderComponent.EnableType,
+            default: RenderComponent.EnableType.GLOBAL,
+            notify(oldValue) {
+                this.setVertsDirty();
+            }
+        },
     },
 
     statics: {

engine/cocos2d/core/components/CCRichText.js

@@ -439,6 +439,26 @@ let RichText = cc.Class({
                 }
             }
         },
+
+        enableRetina: {
+            type: RenderComponent.EnableType,
+            default: RenderComponent.EnableType.GLOBAL,
+            notify: function (oldValue) {
+                if (this.enableRetina === oldValue) return;
+                for (let i = 0; i < this._labelSegments.length; i++) {
+                    const labelComponent = this._labelSegments[i].getComponent(cc.Label);
+                    if (labelComponent) {
+                        labelComponent.enableRetina = this.enableRetina;
+                    }
+                }
+                for (let i = 0; i < this._labelSegmentsCache.length; i++) {
+                    const labelComponent = this._labelSegmentsCache[i].getComponent(cc.Label);
+                    if (labelComponent) {
+                        labelComponent.enableRetina = this.enableRetina;
+                    }
+                }
+            }
+        },
     },
 
     statics: {
@@ -1053,6 +1073,7 @@ let RichText = cc.Class({
 
         labelComponent.autoSwitchMaterial = this.autoSwitchMaterial;
         labelComponent.allowDynamicAtlas = this.allowDynamicAtlas;
+        labelComponent.enableRetina = this.enableRetina;
 
         // 更新材质
         if (this.customMaterial) {

engine/cocos2d/core/renderer/utils/label/bmfont.js

@@ -75,6 +75,8 @@ let _isWrapText = false;
 let _labelWidth = 0;
 let _labelHeight = 0;
 let _maxLineWidth = 0;
+let _isRetina = false;
+let _retinaScale = 1;
 
 export default class BmfontAssembler extends Assembler2D {
     updateRenderData (comp) {
@@ -112,6 +114,12 @@ export default class BmfontAssembler extends Assembler2D {
         this._updateContent();
         this.updateWorldVerts(comp);
 
+        if (_isRetina) {
+            _contentSize.width /= _retinaScale;
+            _contentSize.height /= _retinaScale;
+            _fontSize /= _retinaScale;
+        }
+
         _comp._actualFontSize = _fontSize;
         _comp.node.setContentSize(_contentSize);
 
@@ -139,8 +147,14 @@ export default class BmfontAssembler extends Assembler2D {
         shareLabelInfo.margin = 0;
     }
 
+    getTTFTextureSizeScale() {
+        return _isRetina ? _retinaScale : 1;
+    }
+
     _updateProperties (comp) {
         _string = comp.string.toString();
+        _isRetina = !(comp.font instanceof cc.BitmapFont) && (cc.sp.enableLabelRetina && comp.enableRetina === 0) || comp.enableRetina === 1;
+        _retinaScale = cc.sp.labelRetinaScale;
         _fontSize = comp.fontSize;
         _originFontSize = _fntConfig ? _fntConfig.fontSize : comp.fontSize;
         _hAlign = comp.horizontalAlign;
@@ -152,6 +166,15 @@ export default class BmfontAssembler extends Assembler2D {
         _contentSize.width = comp.node.width;
         _contentSize.height = comp.node.height;
 
+        if (_isRetina) {
+            _fontSize *= _retinaScale;
+            if (!_fntConfig) _originFontSize *= _retinaScale;
+            _contentSize.width *= _retinaScale;
+            _contentSize.height *= _retinaScale;
+            _lineHeight *= _retinaScale;
+            shareLabelInfo.margin *= _retinaScale;
+        }
+
         // should wrap text
         if (_overflow === Overflow.NONE) {
             _isWrapText = false;

engine/cocos2d/core/renderer/utils/label/ttf.js

@@ -55,6 +55,8 @@ let _fontFamily = '';
 let _overflow = Overflow.NONE;
 let _isWrapText = false;
 let _premultiply = false;
+let _isRetina = false;
+let _retinaScale = 1;
 
 // outline
 let _outlineComp = null;
@@ -117,6 +119,11 @@ export default class TTFAssembler extends Assembler2D {
     }
 
     _aftUpdateRenderData(comp) {
+        if (_isRetina) {
+            _fontSize /= _retinaScale;
+            _nodeContentSize.width /= _retinaScale;
+            _nodeContentSize.height /= _retinaScale;
+        }
         comp._actualFontSize = _fontSize;
         comp.node.setContentSize(_nodeContentSize);
 
@@ -129,6 +136,10 @@ export default class TTFAssembler extends Assembler2D {
         _texture = null;
     }
 
+    getTTFTextureSizeScale() {
+        return _isRetina ? _retinaScale : 1;
+    }
+
     updateVerts () {
     }
 
@@ -138,6 +149,9 @@ export default class TTFAssembler extends Assembler2D {
         _contentSizeExtend.width = _contentSizeExtend.height = 0;
         if (_outlineComp) {
             outlineWidth = _outlineComp.width;
+            if (_isRetina) {
+                outlineWidth *= _retinaScale;
+            }
             top = bottom = left = right = outlineWidth;
             _contentSizeExtend.width = _contentSizeExtend.height = outlineWidth * 2;
         }
@@ -166,15 +180,27 @@ export default class TTFAssembler extends Assembler2D {
         _canvas = assemblerData.canvas;
         _texture = comp._frame._original ? comp._frame._original._texture : comp._frame._texture;
 
+        _isRetina = (cc.sp.enableLabelRetina && comp.enableRetina === 0) || comp.enableRetina === 1;
+        _retinaScale = cc.sp.labelRetinaScale;
         _string = comp.string.toString();
         _fontSize = comp._fontSize;
-        _drawFontSize = _fontSize;
-        _underlineThickness = comp.underlineHeight || _drawFontSize / 8;
-        _overflow = comp.overflow;
-        _canvasSize.width = comp.node.width;
-        _canvasSize.height = comp.node.height;
         _nodeContentSize = comp.node.getContentSize();
         _lineHeight = comp._lineHeight;
+        _drawFontSize = _fontSize;
+        _underlineThickness = comp.underlineHeight || _drawFontSize / 8;
+
+        if (_isRetina) {
+            _fontSize *= _retinaScale;
+            _nodeContentSize.width *= _retinaScale;
+            _nodeContentSize.height *= _retinaScale;
+            _lineHeight *= _retinaScale;
+            if (comp.underlineHeight) _underlineThickness *= _retinaScale;
+            _drawFontSize = _fontSize;
+        }
+
+        _overflow = comp.overflow;
+        _canvasSize.width = _nodeContentSize.width;
+        _canvasSize.height = _nodeContentSize.height;
         _hAlign = comp.horizontalAlign;
         _vAlign = comp.verticalAlign;
         _color = comp.node.color;
@@ -250,14 +276,14 @@ export default class TTFAssembler extends Assembler2D {
 
     _setupOutline () {
         _context.strokeStyle = `rgba(${_outlineColor.r}, ${_outlineColor.g}, ${_outlineColor.b}, ${_outlineColor.a / 255})`;
-        _context.lineWidth = _outlineComp.width * 2;
+        _context.lineWidth = _outlineComp.width * 2 * (_isRetina ? _retinaScale : 1);
     }
 
     _setupShadow () {
         _context.shadowColor = `rgba(${_shadowColor.r}, ${_shadowColor.g}, ${_shadowColor.b}, ${_shadowColor.a / 255})`;
-        _context.shadowBlur = _shadowComp.blur;
+        _context.shadowBlur = _shadowComp.blur * (_isRetina ? _retinaScale : 1);
-        _context.shadowOffsetX = _shadowComp.offset.x;
+        _context.shadowOffsetX = _shadowComp.offset.x * (_isRetina ? _retinaScale : 1);
-        _context.shadowOffsetY = -_shadowComp.offset.y;
+        _context.shadowOffsetY = -_shadowComp.offset.y * (_isRetina ? _retinaScale : 1);
     }
 
     _drawTextEffect (startPosition, lineHeight) {

engine/cocos2d/core/renderer/webgl/assemblers/label/2d/bmfont.js

@@ -121,6 +121,11 @@ export default class WebglBmfontAssembler extends BmfontAssembler {
 
 
         // positions
+        const retinaScale = this.getTTFTextureSizeScale();
+        x /= retinaScale;
+        y /= retinaScale;
+        rectWidth /= retinaScale;
+        rectHeight /= retinaScale;
         l = x;
         r = x + rectWidth * scale;
         b = y - rectHeight * scale;

engine/cocos2d/core/renderer/webgl/assemblers/label/2d/ttf.js

@@ -49,10 +49,11 @@ export default class WebglTTFAssembler extends TTFAssembler {
         super.updateColor(comp, color);
     }
 
-    updateVerts (comp) {
+    updateVerts(comp) {
+        const scale = this.getTTFTextureSizeScale();
         let node = comp.node,
-            canvasWidth = comp._ttfTexture.width,
+            canvasWidth = comp._ttfTexture.width / scale,
-            canvasHeight = comp._ttfTexture.height,
+            canvasHeight = comp._ttfTexture.height / scale,
             appx = node.anchorX * node.width,
             appy = node.anchorY * node.height;