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author | Paul Gilbert | 2015-06-21 13:59:01 -0400 |
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committer | Paul Gilbert | 2015-06-21 13:59:01 -0400 |
commit | beb74228be303e00b072440d0f514e5ef060433e (patch) | |
tree | 05ea0924a36c203552b1dcb7497bd2fa526d4512 /engines/sherlock | |
parent | 6b01a11a398b6366cdf810a31648e371ea6146ca (diff) | |
download | scummvm-rg350-beb74228be303e00b072440d0f514e5ef060433e.tar.gz scummvm-rg350-beb74228be303e00b072440d0f514e5ef060433e.tar.bz2 scummvm-rg350-beb74228be303e00b072440d0f514e5ef060433e.zip |
SHERLOCK: RT: Implement makeBGArea for converting to greyscale
Diffstat (limited to 'engines/sherlock')
-rw-r--r-- | engines/sherlock/tattoo/tattoo_user_interface.cpp | 12 | ||||
-rw-r--r-- | engines/sherlock/tattoo/tattoo_user_interface.h | 5 |
2 files changed, 17 insertions, 0 deletions
diff --git a/engines/sherlock/tattoo/tattoo_user_interface.cpp b/engines/sherlock/tattoo/tattoo_user_interface.cpp index 771c22c46e..84ebfe7837 100644 --- a/engines/sherlock/tattoo/tattoo_user_interface.cpp +++ b/engines/sherlock/tattoo/tattoo_user_interface.cpp @@ -863,6 +863,18 @@ void TattooUserInterface::drawMaskArea(bool mode) { } } +void TattooUserInterface::makeBGArea(const Common::Rect &r) { + Screen &screen = *_vm->_screen; + + for (int yp = r.top; yp < r.bottom; ++yp) { + byte *ptr = screen._backBuffer1.getBasePtr(r.left, yp); + + for (int xp = r.left; xp < r.right; ++xp, ++ptr) + *ptr = _lookupTable[*ptr]; + } +} + + } // End of namespace Tattoo } // End of namespace Sherlock diff --git a/engines/sherlock/tattoo/tattoo_user_interface.h b/engines/sherlock/tattoo/tattoo_user_interface.h index 6eeae2dfd9..27039d9e4b 100644 --- a/engines/sherlock/tattoo/tattoo_user_interface.h +++ b/engines/sherlock/tattoo/tattoo_user_interface.h @@ -208,6 +208,11 @@ public: void doBgAnimEraseBackground(); void drawMaskArea(bool mode); + + /** + * Translate a given area of the back buffer to greyscale shading + */ + void makeBGArea(const Common::Rect &r); public: /** * Resets the user interface |