diff options
Diffstat (limited to 'engines/adl/display.cpp')
| -rw-r--r-- | engines/adl/display.cpp | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/engines/adl/display.cpp b/engines/adl/display.cpp index 6342504bc3..37959735fd 100644 --- a/engines/adl/display.cpp +++ b/engines/adl/display.cpp @@ -219,9 +219,24 @@ void Display::loadFrameBuffer(Common::ReadStream &stream) { error("Failed to read frame buffer"); } +void Display::putPixelRaw(const Common::Point &p, byte color) { + byte *b = _frameBuf + p.y * DISPLAY_PITCH + (p.x / 7); + color ^= *b; + color &= 0x80 | (1 << (p.x % 7)); + *b ^= color; +} + void Display::putPixel(const Common::Point &p, byte color) { byte offset = p.x / 7; + byte mask = 0x80 | (1 << (p.x % 7)); + // Since white and black are in both palettes, we leave + // the palette bit alone + if ((color & 0x7f) == 0x7f || (color & 0x7f) == 0) + mask &= 0x7f; + + // Adjust colors starting with bits '01' or '10' for + // odd offsets if (offset & 1) { byte c = color << 1; if (c >= 0x40 && c < 0xc0) @@ -230,10 +245,15 @@ void Display::putPixel(const Common::Point &p, byte color) { byte *b = _frameBuf + p.y * DISPLAY_PITCH + offset; color ^= *b; - color &= 1 << (p.x % 7); + color &= mask; *b ^= color; } +bool Display::getPixelBit(const Common::Point &p) const { + byte *b = _frameBuf + p.y * DISPLAY_PITCH + (p.x / 7); + return *b & (1 << (p.x % 7)); +} + void Display::clear(byte color) { byte val = 0; |