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GUI: Fix black rectangle around cursor in modern remastered them without RGB

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Modern remastered uses cursor with alpha. It's not correctly converted and
so we get black rectangle around it when using --disable-16bit
This commit is contained in:
Vladimir Serbinenko 2023-01-31 01:39:27 +01:00
parent d3f87c97ee
commit ef3eda01e0
1 changed files with 5 additions and 2 deletions
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7
gui/ThemeEngine.cpp
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@ -1596,7 +1596,8 @@ bool ThemeEngine::createCursor(const Common::String &filename, int hotspotX, int
memset(_cursor, 0xFF, sizeof(byte) * _cursorWidth * _cursorHeight);
// the transparent color is 0xFF00FF
const uint32 colTransparent = _overlayFormat.RGBToColor(0xFF, 0, 0xFF);
const uint32 colTransparent = cursor->format.RGBToColor(0xFF, 0, 0xFF);
const uint32 alphaMask = cursor->format.ARGBToColor(0x80, 0, 0, 0);
// Now, scan the bitmap. We have to convert it from 16 bit color mode
// to 8 bit mode, and have to create a suitable palette on the fly.
@ -1617,7 +1618,9 @@ bool ThemeEngine::createCursor(const Common::String &filename, int hotspotX, int
src += cursor->format.bytesPerPixel;
// Skip transparency
if (color == colTransparent)
if (color == colTransparent
// Replace with transparent is alpha is present and < 50%
|| (alphaMask != 0 && (color & alphaMask) == 0))
continue;
cursor->format.colorToRGB(color, r, g, b);