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Fix transparency for WMS layers (fixes #12300)

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This commit is contained in:
Martin Dobias 2015-06-18 23:36:01 +08:00
parent 78708159b2
commit dbfbc69283
1 changed files with 7 additions and 5 deletions
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12
src/core/raster/qgssinglebandcolordatarenderer.cpp
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@ -87,13 +87,15 @@ QgsRasterBlock* QgsSingleBandColorDataRenderer::block( int bandNo, QgsRectangle
return outputBlock;
}
// make sure input is also premultiplied!
inputBlock->convert( QGis::ARGB32_Premultiplied );
QRgb* inputBits = ( QRgb* )inputBlock->bits();
QRgb* outputBits = ( QRgb* )outputBlock->bits();
for ( qgssize i = 0; i < ( qgssize )width*height; i++ )
{
QRgb pixelColor;
QRgb c = inputBlock->color( i );
double alpha = qAlpha( c );
pixelColor = qRgba( mOpacity * qRed( c ), mOpacity * qGreen( c ), mOpacity * qBlue( c ), mOpacity * alpha );
outputBlock->setColor( i, pixelColor );
QRgb c = inputBits[i];
outputBits[i] = qRgba( mOpacity * qRed( c ), mOpacity * qGreen( c ), mOpacity * qBlue( c ), mOpacity * qAlpha( c ) );
}
delete inputBlock;