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TilemapLayer - {missing changes}

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Paul 2015-01-24 18:37:28 -08:00
parent 818d5bcdcc
commit ad9245caeb
1 changed files with 9 additions and 54 deletions
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63
src/tilemap/TilemapLayer.js
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@ -133,17 +133,12 @@ Phaser.TilemapLayer = function (game, tilemap, index, width, height) {
* Using a canvas bitblt/copy when the source and destinations region overlap produces unexpected behavior
* in some browsers, notably Safari.
*
* @property {integer} copySliceCount - [Internal] The number of vertical slices to copy when using a `copyCanvas`.
* This is ratio of the pixel count of the primary canvas to the copy canvas.
* *Note*: Safari 7 based canvas implemenations do not work correctly if slices are used.
*
* @default
*/
this.renderSettings = {
enableScrollDelta: true,
overdrawRatio: 0.20,
copyCanvas: null,
copySliceCount: 1
copyCanvas: null
};
/**
@ -716,16 +711,7 @@ Phaser.TilemapLayer.prototype.shiftCanvas = function (context, x, y)
}
var copyCanvas = this.renderSettings.copyCanvas;
if (!copyCanvas)
{
// Avoids a second copy but flickers in Safari / Safari Mobile
// Ref. https://github.com/photonstorm/phaser/issues/1439
context.save();
context.globalCompositeOperation = 'copy';
context.drawImage(canvas, dx, dy, copyW, copyH, sx, sy, copyW, copyH);
context.restore();
}
else if (this.renderSettings.copySliceCount === 1)
if (copyCanvas)
{
// Use a second copy buffer, without slice support, for Safari .. again.
// Ensure copy canvas is large enough
@ -744,45 +730,14 @@ Phaser.TilemapLayer.prototype.shiftCanvas = function (context, x, y)
}
else
{
// Copying happens in slices to minimize copy canvas size overhead
// (This does not work correctly in Safari 7 under move-region-up.)
var sliceCount = this.renderSettings.copySliceCount;
var sH = Math.ceil(copyH / sliceCount);
// Ensure copy canvas is large enough
if (copyCanvas.width < copyW || copyCanvas.height < sH)
{
copyCanvas.width = copyW;
copyCanvas.height = sH;
}
var vShift;
if (dy >= sy)
{
// move old region up, or don't change vertically - copy top to bottom
vShift = sH;
}
else
{
// move old region down - copy segments from bottom to top
vShift = -sH;
dy += (sH * (sliceCount - 1));
sy += (sH * (sliceCount - 1));
}
var copyContext = copyCanvas.getContext('2d');
while (sliceCount--)
{
copyContext.clearRect(0, 0, copyW, sH);
copyContext.drawImage(canvas, dx, dy, copyW, sH, 0, 0, copyW, sH);
// clear allows default 'source-over' semantics
context.clearRect(sx, sy, copyW, sH);
context.drawImage(copyCanvas, 0, 0, copyW, sH, sx, sy, copyW, sH);
dy += vShift;
sy += vShift;
}
// Avoids a second copy but flickers in Safari / Safari Mobile
// Ref. https://github.com/photonstorm/phaser/issues/1439
context.save();
context.globalCompositeOperation = 'copy';
context.drawImage(canvas, dx, dy, copyW, copyH, sx, sy, copyW, copyH);
context.restore();
}
};
/**