libretro/scummvm
1
0
Fork 0
mirror of https://github.com/libretro/scummvm.git synced 2025-03-04 01:07:22 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

SCI: More work on kRemapColors

Browse Source 
This implements some more color remap-based palette effects, found in QFG4
This commit is contained in:
Filippos Karapetis 2012-08-21 03:31:00 +03:00
parent 1a61056b06
commit 7d436622a8
3 changed files with 34 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
engines/sci/engine/kgraphics32.cpp
View File

@ -771,20 +771,23 @@ reg_t kRemapColors32(EngineState *s, int argc, reg_t *argv) {
}
break;
case 3: { // remap to gray
// Example call: QFG4 room 490 (Baba Yaga's hut) - params are color 253, 75% and 0
// Example call: QFG4 room 490 (Baba Yaga's hut) - params are color 253, 75% and 0.
// In this room, it's used for the cloud before Baba Yaga appears.
int16 color = argv[1].toSint16();
int16 percent = argv[2].toSint16(); // 0 - 100
uint16 unk3 = (argc >= 4) ? argv[3].toUint16() : 0;
warning("kRemapColors: RemapToGray color %d by %d percent (unk3 = %d)", color, percent, unk3);
// TODO
if (argc >= 4)
warning("RemapToGray called with 4 parameters, unknown parameter is %d", argv[3].toUint16());
g_sci->_gfxPalette->setRemappingPercentGray(color, percent);
}
break;
case 4: { // remap to percent gray
//int16 unk1 = argv[1].toSint16();
//uint16 unk2 = argv[2].toUint16();
//uint16 unk3 = argv[3].toUint16();
//uint16 unk4 = (argc >= 5) ? argv[4].toUint16() : 0;
kStub(s, argc, argv);
// Example call: QFG4 rooms 530/535 (swamp) - params are 253, 100%, 200
int16 color = argv[1].toSint16();
int16 percent = argv[2].toSint16(); // 0 - 100
// argv[3] is unknown (a number, e.g. 200) - start color, perhaps?
if (argc >= 5)
warning("RemapToGrayPercent called with 5 parameters, unknown parameter is %d", argv[4].toUint16());
g_sci->_gfxPalette->setRemappingPercentGray(color, percent);
}
break;
case 5: { // don't map to range

21
engines/sci/graphics/palette.cpp
View File

@ -375,6 +375,27 @@ void GfxPalette::setRemappingPercent(byte color, byte percent) {
_remappingType[color] = kRemappingByPercent;
}
void GfxPalette::setRemappingPercentGray(byte color, byte percent) {
_remapOn = true;
// We need to defer the setup of the remapping table every time the screen
// palette is changed, so that kernelFindColor() can find the correct
// colors. Set it once here, in case the palette stays the same and update
// it on each palette change by copySysPaletteToScreen().
_remappingPercentToSet = percent;
// Note: This is not what the original does, but the results are the same visually
for (int i = 0; i < 256; i++) {
byte rComponent = _sysPalette.colors[i].r * _remappingPercentToSet * 0.30 / 100;
byte gComponent = _sysPalette.colors[i].g * _remappingPercentToSet * 0.59 / 100;
byte bComponent = _sysPalette.colors[i].b * _remappingPercentToSet * 0.11 / 100;
byte luminosity = rComponent + gComponent + bComponent;
_remappingByPercent[i] = kernelFindColor(luminosity, luminosity, luminosity);
}
_remappingType[color] = kRemappingByPercent;
}
void GfxPalette::setRemappingRange(byte color, byte from, byte to, byte base) {
_remapOn = true;

1
engines/sci/graphics/palette.h
View File

@ -61,6 +61,7 @@ public:
void resetRemapping();
void setRemappingPercent(byte color, byte percent);
void setRemappingPercentGray(byte color, byte percent);
void setRemappingRange(byte color, byte from, byte to, byte base);
bool isRemapped(byte color) const {
return _remapOn && (_remappingType[color] != kRemappingNone);