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Diffstat (limited to 'src/blitter/32bpp_base.hpp')
| -rw-r--r-- | src/blitter/32bpp_base.hpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/blitter/32bpp_base.hpp b/src/blitter/32bpp_base.hpp index ca58f0353..26c3dee3f 100644 --- a/src/blitter/32bpp_base.hpp +++ b/src/blitter/32bpp_base.hpp @@ -113,6 +113,19 @@ public: } /** + * Make a colour dark grey, for specialized 32bpp remapping. + * @param r red component + * @param g green component + * @param b blue component + * @return the brightness value of the new colour, now dark grey. + */ + static inline uint8 MakeDark(uint8 r, uint8 g, uint8 b) + { + /* Magic-numbers are ~66% of those used in MakeGrey() */ + return ((r * 13063) + (g * 25647) + (b * 4981)) / 65536; + } + + /** * Make a colour grey - based. * @param colour the colour to make grey. * @return the new colour, now grey. |