diff options
| -rw-r--r-- | engines/wintermute/base/font/base_font_truetype.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/engines/wintermute/base/font/base_font_truetype.cpp b/engines/wintermute/base/font/base_font_truetype.cpp index b6f372f377..cc0b9d340a 100644 --- a/engines/wintermute/base/font/base_font_truetype.cpp +++ b/engines/wintermute/base/font/base_font_truetype.cpp @@ -286,6 +286,26 @@ BaseSurface *BaseFontTT::renderTextToTexture(const WideString &text, int width, BaseSurface *retSurface = _gameRef->_renderer->createSurface(); Graphics::Surface *convertedSurface = surface->convertTo(_gameRef->_renderer->getPixelFormat()); + + if (_deletableFont) { + // Reconstruct the alpha channel of the font. + + // Since we painted it with color 0xFFFFFFFF onto a black background, + // the alpha channel is gone, but the colour value of each pixel corresponds + // to its original alpha value. + + Graphics::PixelFormat format = _gameRef->_renderer->getPixelFormat(); + uint32 *pixels = (uint32 *)convertedSurface->getPixels(); + + // This is a Surface we created ourselves, so no emtpy space between rows. + for (int i = 0; i < surface->w * surface->h; ++i) { + uint8 a, r, g, b; + format.colorToRGB(*pixels, r, g, b); + a = r; + *pixels++ = format.ARGBToColor(a, r, g, b); + } + } + retSurface->putSurface(*convertedSurface, true); convertedSurface->free(); surface->free(); |