From b2748740dbf5c9a8d7b648428d005e102ae41d7e Mon Sep 17 00:00:00 2001
From: Bertrand Augereau
Date: Sat, 30 Jul 2011 15:04:25 +0200
Subject: DREAMWEB: Better API for 'showframe' and no more registers used
 (expect es:bx for diffdest blitting)

---
 engines/dreamweb/vgagrafx.cpp | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

(limited to 'engines/dreamweb/vgagrafx.cpp')

diff --git a/engines/dreamweb/vgagrafx.cpp b/engines/dreamweb/vgagrafx.cpp
index b10ef811b3..e1622d69af 100644
--- a/engines/dreamweb/vgagrafx.cpp
+++ b/engines/dreamweb/vgagrafx.cpp
@@ -317,11 +317,8 @@ void DreamGenContext::frameoutv(uint8 *dst, const uint8 *src, uint16 pitch, uint
 	}
 }
 
-void DreamGenContext::showframe(uint16 src, uint16 x, uint16 y, uint16 frameNumber, uint8 effectsFlag, uint8 *width, uint8 *height) {
-	ds = src;
-	ah = effectsFlag;
-
-	const Frame *frame = (const Frame *)ds.ptr(frameNumber * sizeof(Frame), 6);
+void DreamGenContext::showframe(const void *frameData, uint16 x, uint16 y, uint16 frameNumber, uint8 effectsFlag, uint8 *width, uint8 *height) {
+	const Frame *frame = ((const Frame *)frameData) + frameNumber;
 	if ((frame->width == 0) && (frame->height == 0)) {
 		*width = 0;
 		*height = 0;
@@ -337,8 +334,7 @@ void DreamGenContext::showframe(uint16 src, uint16 x, uint16 y, uint16 frameNumb
 
 	*width = frame->width;
 	*height = frame->height;
-	si = frame->ptr() + 2080;
-	const uint8 *pSrc = ds.ptr(si, *width * *height);
+	const uint8 *pSrc = ((const uint8 *)frameData) + frame->ptr() + 2080;
 
 	if (effectsFlag) {
 		if (effectsFlag & 128) { //centred
@@ -378,7 +374,7 @@ void DreamGenContext::showframe(uint16 src, uint16 x, uint16 y, uint16 frameNumb
 
 void DreamGenContext::showframe() {
 	uint8 width, height;
-	showframe(ds, di, bx, ax & 0x1ff, ah & 0xfe, &width, &height);
+	showframe(ds.ptr(0, 0), di, bx, ax & 0x1ff, ah & 0xfe, &width, &height);
 	cl = width;
 	ch = height;
 }
-- 
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