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Fix haxe part of issue https://github.com/openfl/openfl/issues/635

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MrCdK
2015-04-28 00:51:49 +02:00
parent 803538e4da
commit 2f902dd072
1 changed files with 13 additions and 8 deletions
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21
lime/graphics/utils/ImageDataUtil.hx
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@@ -182,9 +182,9 @@ class ImageDataUtil {
}
#if ((cpp || neko) && !disable_cffi)
if (!System.disableCFFI) lime_image_data_util_copy_pixels (image, sourceImage, sourceRect, destPoint, mergeAlpha); else
#end
//#if ((cpp || neko) && !disable_cffi)
//if (!System.disableCFFI) lime_image_data_util_copy_pixels (image, sourceImage, sourceRect, destPoint, mergeAlpha); else
//#end
{
var rowOffset = Std.int (destPoint.y + image.offsetY - sourceRect.y - sourceImage.offsetY);
@@ -228,6 +228,8 @@ class ImageDataUtil {
} else {
var sourceAlpha:Float;
var destAlpha:Float;
var outA:Float;
var oneMinusSourceAlpha:Float;
for (row in Std.int (sourceRect.top + sourceImage.offsetY)...Std.int (sourceRect.bottom + sourceImage.offsetY)) {
@@ -237,13 +239,16 @@ class ImageDataUtil {
sourceOffset = (row * sourceStride) + (column * 4);
offset = ((row + rowOffset) * stride) + ((column + columnOffset) * 4);
sourceAlpha = sourceData[sourceOffset + 3] / 255;
sourceAlpha = sourceData[sourceOffset + 3] / 255.0;
destAlpha = data[offset + 3] / 255.0;
oneMinusSourceAlpha = (1 - sourceAlpha);
data[offset] = __clamp[Std.int (sourceData[sourceOffset] * sourceAlpha)] + __clamp[Std.int(data[offset] * oneMinusSourceAlpha)];
data[offset + 1] = __clamp[Std.int (sourceData[sourceOffset + 1] * sourceAlpha)] + __clamp[Std.int(data[offset + 1] * oneMinusSourceAlpha)];
data[offset + 2] = __clamp[Std.int (sourceData[sourceOffset + 2] * sourceAlpha)] + __clamp[Std.int(data[offset + 2] * oneMinusSourceAlpha)];
data[offset + 3] = __clamp[Std.int (sourceData[sourceOffset + 3] * sourceAlpha)] + __clamp[Std.int(data[offset + 3] * oneMinusSourceAlpha)];
outA = sourceAlpha + destAlpha * oneMinusSourceAlpha;
data[offset + 0] = __clamp[Math.round ((sourceData[sourceOffset + 0] * sourceAlpha + data[offset + 0] * destAlpha * oneMinusSourceAlpha) / outA)];
data[offset + 1] = __clamp[Math.round ((sourceData[sourceOffset + 1] * sourceAlpha + data[offset + 1] * destAlpha * oneMinusSourceAlpha) / outA)];
data[offset + 2] = __clamp[Math.round ((sourceData[sourceOffset + 2] * sourceAlpha + data[offset + 2] * destAlpha * oneMinusSourceAlpha) / outA)];
data[offset + 3] = __clamp[Math.round (outA * 255.0)];
}