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DM: Improve upon blitShrink

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This commit is contained in:
Bendegúz Nagy 2016-08-05 17:19:17 +02:00
parent 65e4098080
commit 9cd5732b03
1 changed files with 5 additions and 4 deletions
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9
engines/dm/gfx.cpp
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@ -1035,7 +1035,8 @@ void DisplayMan::f110_drawDoorButton(int16 doorButtonOrdinal, int16 viewDoorButt
byte *bitmapNative = f489_getNativeBitmapOrGraphic(nativeBitmapIndex);
f129_blitToBitmapShrinkWithPalChange(bitmapNative, f492_getDerivedBitmap(doorButtonOrdinal),
coordSetBlueGoat[4] << 1, coordSetBlueGoat[5],
coordSetRedEagle[1] - coordSetRedEagle[0] + 1,
// modified code line
coordSetRedEagle[4] << 1,
coordSetRedEagle[5],
(viewDoorButtonIndex == k2_viewDoorButton_D2C) ? g199_PalChangesDoorButtonAndWallOrn_D2 : g198_PalChangesDoorButtonAndWallOrn_D3);
@ -2644,15 +2645,15 @@ T0107031:
void DisplayMan::f129_blitToBitmapShrinkWithPalChange(byte *srcBitmap, byte *destBitmap,
int16 srcPixelWidth, int16 srcHeight,
int16 destPixelWidth, int16 destHeight, byte *palChange) {
if (destPixelWidth % 8)
destPixelWidth = (destPixelWidth / 8) * 8 + 8;
const uint32 SCALE_THRESHOLD = 32768;
uint32 scaleX = (SCALE_THRESHOLD * srcPixelWidth) / destPixelWidth;
uint32 scaleY = (SCALE_THRESHOLD * srcHeight) / destHeight;
warning(false, "MISSING CODE: No palette change takes place in f129_blitToBitmapShrinkWithPalChange");
if (destPixelWidth % 2)
destPixelWidth++;
// Loop through drawing output lines
for (uint32 destY = 0, scaleYCtr = 0; destY < (uint32)destHeight; ++destY, scaleYCtr += scaleY) {