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* override fully transparent alpha of tga images by fully opaque

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This commit is contained in:
Garux 2019-04-23 18:16:00 +03:00
parent 8d1015c7c8
commit bbaa57176b
1 changed files with 12 additions and 1 deletions
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13
plugins/image/tga.cpp
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@ -87,6 +87,15 @@ void image_decode( PointerInputStream& istream, PixelDecoder& decode, RGBAImage&
}
}
void image_fix_fully_transparent_alpha( RGBAImage& image ){
const RGBAPixel* end = image.pixels + ( image.height * image.width );
for( RGBAPixel* pixel = image.pixels; pixel != end; ++pixel )
if( pixel->alpha != 0 )
return;
for( RGBAPixel* pixel = image.pixels; pixel != end; ++pixel )
pixel->alpha = 0xff;
}
inline void istream_read_gray( PointerInputStream& istream, RGBAPixel& pixel ){
istream.read( &pixel.blue, 1 );
pixel.red = pixel.green = pixel.blue;
@ -147,6 +156,7 @@ template<typename Flip>
void targa_decode_rgba( PointerInputStream& istream, RGBAImage& image, const Flip& flip ){
TargaDecodeRGBAPixel decode;
image_decode( istream, decode, image, flip );
image_fix_fully_transparent_alpha( image );
}
typedef byte TargaPacket;
@ -271,6 +281,7 @@ template<typename Flip>
void targa_decode_rle_rgba( PointerInputStream& istream, RGBAImage& image, const Flip& flip ){
TargaDecodeRGBAPixelRLE decode;
image_decode( istream, decode, image, flip );
image_fix_fully_transparent_alpha( image );
}
struct TargaHeader
@ -413,4 +424,4 @@ Image* LoadTGABuff( const byte* buffer ){
Image* LoadTGA( ArchiveFile& file ){
ScopedArchiveBuffer buffer( file );
return LoadTGABuff( buffer.buffer );
}
}