From 4717d11862a45991b56f367cc6616ffb1379e8c6 Mon Sep 17 00:00:00 2001
From: Filippos Karapetis
Date: Tue, 27 Sep 2011 16:45:17 +0300
Subject: SCI: Added support for the halfbrite palette used in Longbow Amiga

This fixes the remaining palette problems in the game (bug #3309036)
---
 engines/sci/graphics/palette.cpp | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'engines/sci')

diff --git a/engines/sci/graphics/palette.cpp b/engines/sci/graphics/palette.cpp
index c667e3313f..5f703b90e3 100644
--- a/engines/sci/graphics/palette.cpp
+++ b/engines/sci/graphics/palette.cpp
@@ -206,6 +206,14 @@ bool GfxPalette::setAmiga() {
 			_sysPalette.colors[curColor].r = (byte1 & 0x0F) * 0x11;
 			_sysPalette.colors[curColor].g = ((byte2 & 0xF0) >> 4) * 0x11;
 			_sysPalette.colors[curColor].b = (byte2 & 0x0F) * 0x11;
+
+			if (_totalScreenColors == 64) {
+				// Set the associated color from the Amiga halfbrite colors
+				_sysPalette.colors[curColor + 32].used = 1;
+				_sysPalette.colors[curColor + 32].r = _sysPalette.colors[curColor].r >> 1;
+				_sysPalette.colors[curColor + 32].g = _sysPalette.colors[curColor].g >> 1;
+				_sysPalette.colors[curColor + 32].b = _sysPalette.colors[curColor].b >> 1;
+			}
 		}
 
 		// Directly set the palette, because setOnScreen() wont do a thing for amiga
@@ -226,6 +234,13 @@ void GfxPalette::modifyAmigaPalette(byte *data) {
 		_sysPalette.colors[curColor].r = (byte1 & 0x0F) * 0x11;
 		_sysPalette.colors[curColor].g = ((byte2 & 0xF0) >> 4) * 0x11;
 		_sysPalette.colors[curColor].b = (byte2 & 0x0F) * 0x11;
+
+		if (_totalScreenColors == 64) {
+			// Set the associated color from the Amiga halfbrite colors
+			_sysPalette.colors[curColor + 32].r = _sysPalette.colors[curColor].r >> 1;
+			_sysPalette.colors[curColor + 32].g = _sysPalette.colors[curColor].g >> 1;
+			_sysPalette.colors[curColor + 32].b = _sysPalette.colors[curColor].b >> 1;
+		}
 	}
 
 	copySysPaletteToScreen();
-- 
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