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Make "[Press ENTER to return to editor]" fade out after a bit

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This makes the "[Press ENTER to return to editor]" fade out after a few frames, allowing screenshots of custom levels to be cleaner and to make sure nothing is obscured while the user is editing their level.
This commit also adds alpha support in BlitSurfaceColoured, where it takes into account the alpha of the pixel *and* the alpha of the color.
`graphics::getRGBA(r,g,b,a)` was added to help with this.
This commit is contained in:
AllyTally
2020-02-09 22:23:12 -04:00
parent 3273b4ab55
commit 6b1a7ebce6
6 changed files with 50 additions and 13 deletions
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6
desktop_version/src/GraphicsUtil.cpp
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@@ -300,7 +300,11 @@ void BlitSurfaceColoured(
Uint32 pixel = ReadPixel(_src, x, y);
Uint32 Alpha = pixel & fmt.Amask;
Uint32 result = ct.colour & 0x00FFFFFF;
DrawPixel(tempsurface, x, y, result | Alpha);
Uint32 CTAlpha = ct.colour & fmt.Amask;
float div1 = ((Alpha >> 24) / 255.0f);
float div2 = ((CTAlpha >> 24) / 255.0f);
Uint32 UseAlpha = (div1 * div2) * 255.0f;
DrawPixel(tempsurface, x, y, result | (UseAlpha << 24));
}
}