1 files changed, 74 insertions, 0 deletions
diff --git a/engines/sci/engine/kgraphics32.cpp b/engines/sci/engine/kgraphics32.cpp
index 7cfac57675..245c265ba6 100644
--- a/engines/sci/engine/kgraphics32.cpp
+++ b/engines/sci/engine/kgraphics32.cpp
@@ -733,6 +733,80 @@ reg_t kPalCycle(EngineState *s, int argc, reg_t *argv) {
 	return s->r_acc;
 }
 
+reg_t kRemapColors32(EngineState *s, int argc, reg_t *argv) {
+	uint16 operation = argv[0].toUint16();
+
+	switch (operation) {
+	case 0:	{ // Set remapping to base. 0 turns remapping off.
+		int16 base = (argc >= 2) ? argv[1].toSint16() : 0;
+		if (base != 0)	// 0 is the default behavior when changing rooms in GK1, thus silencing the warning
+			warning("kRemapColors: Set remapping to base %d", base);
+		}
+		break;
+	case 1:	{ // unknown
+		//int16 unk1 = argv[1].toSint16();
+		//int16 unk2 = argv[2].toSint16();
+		//int16 unk3 = argv[3].toSint16();
+		//uint16 unk4 = argv[4].toUint16();
+		//uint16 unk5 = (argc >= 6) ? argv[5].toUint16() : 0;
+		kStub(s, argc, argv);
+		}
+		break;
+	case 2:	{ // remap by percent
+		// This adjusts the alpha value of a specific color, and it operates on
+		// an RGBA palette. Since we're operating on an RGB palette, we just
+		// modify the color intensity instead
+		// TODO: From what I understand, palette remapping should be placed
+		// separately, so that it can be reset by case 0 above. Thus, we
+		// should adjust the functionality of the Palette class accordingly.
+		int16 color = argv[1].toSint16();
+		if (color >= 10)
+			color -= 10;
+		uint16 percent = argv[2].toUint16(); // 0 - 100
+		if (argc >= 4)
+			warning("RemapByPercent called with 4 parameters, unknown parameter is %d", argv[3].toUint16());
+		warning("kRemapColors: RemapByPercent color %d by %d percent", color, percent);
+		// TODO: It's not correct to set intensity here
+		//g_sci->_gfxPalette->kernelSetIntensity(color, 255, percent, false);
+		}
+		break;
+	case 3:	{ // remap to gray
+		// NOTE: This adjusts the alpha value of a specific color, and it operates on
+		// an RGBA palette
+		int16 color = argv[1].toSint16();	// this is subtracted from a maximum color value, and can be offset by 10
+		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);
+		}
+		break;
+	case 4:	{ // unknown
+		//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);
+		}
+		break;
+	case 5:	{ // set color intensity
+		// TODO: This isn't right, it should be setting a mapping table instead.
+		// For PQ4, we can emulate this with kernelSetIntensity(). In QFG4, this
+		// won't do.
+		//int16 mapping = argv[1].toSint16();
+		uint16 intensity = argv[2].toUint16();
+		// HACK for PQ4
+		if (g_sci->getGameId() == GID_PQ4)
+			g_sci->_gfxPalette->kernelSetIntensity(0, 255, intensity, true);
+
+		kStub(s, argc, argv);
+		}
+		break;
+	default:
+		break;
+	}
+
+	return s->r_acc;
+}
+
 #endif
 
 } // End of namespace Sci