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Handle empty clip rectangles in GfxView::drawScaled(). Fixes an assert in the first room of the game

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svn-id: r50503
This commit is contained in:
Filippos Karapetis 2010-06-29 20:13:57 +00:00
parent 42351265f1
commit 3a2ac994d4
1 changed files with 6 additions and 2 deletions
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8
engines/sci/graphics/view.cpp
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@ -660,8 +660,12 @@ void GfxView::drawScaled(const Common::Rect &rect, const Common::Rect &clipRect,
scaledWidth = MIN(clipRect.width(), scaledWidth);
scaledHeight = MIN(clipRect.height(), scaledHeight);
const uint16 offsetY = clipRect.top - rect.top;
const uint16 offsetX = clipRect.left - rect.left;
const int16 offsetY = clipRect.top - rect.top;
const int16 offsetX = clipRect.left - rect.left;
// Happens in SQ6, first room
if (offsetX < 0 || offsetY < 0)
return;
assert(scaledHeight + offsetY <= ARRAYSIZE(scalingY));
assert(scaledWidth + offsetX <= ARRAYSIZE(scalingX));