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Fixed an issue where grid background images were drawn upside down and moved in the wrong direction on the Y axis when scrolling

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This commit is contained in:
biwa 2020-01-07 22:26:21 +01:00
parent dfc3089b9f
commit a14fc7cafd
1 changed files with 14 additions and 14 deletions
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28
Source/Core/Rendering/Renderer2D.cs
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@ -759,23 +759,23 @@ namespace CodeImp.DoomBuilder.Rendering
backimageverts = CreateScreenVerts(windowsize);
// Determine map coordinates for view window
Vector2D ltpos = DisplayToMap(new Vector2D(0f, 0f));
Vector2D rbpos = DisplayToMap(new Vector2D(windowsize.Width, windowsize.Height));
Vector2D lbpos = DisplayToMap(new Vector2D(0f, windowsize.Height));
Vector2D rtpos = DisplayToMap(new Vector2D(windowsize.Width, 0));
// Offset by given background offset
ltpos -= backoffset;
rbpos -= backoffset;
lbpos -= backoffset;
rtpos -= backoffset;
// Calculate UV coordinates
// NOTE: backimagesize.y is made negative to match Doom's coordinate system
backimageverts[0].u = ltpos.x / backimagesize.x;
backimageverts[0].v = ltpos.y / -backimagesize.y;
backimageverts[1].u = rbpos.x / backimagesize.x;
backimageverts[1].v = ltpos.y / -backimagesize.y;
backimageverts[2].u = ltpos.x / backimagesize.x;
backimageverts[2].v = rbpos.y / -backimagesize.y;
backimageverts[3].u = rbpos.x / backimagesize.x;
backimageverts[3].v = rbpos.y / -backimagesize.y;
backimageverts[0].u = lbpos.x / backimagesize.x;
backimageverts[0].v = lbpos.y / -backimagesize.y;
backimageverts[1].u = rtpos.x / backimagesize.x;
backimageverts[1].v = lbpos.y / -backimagesize.y;
backimageverts[2].u = lbpos.x / backimagesize.x;
backimageverts[2].v = rtpos.y / -backimagesize.y;
backimageverts[3].u = rtpos.x / backimagesize.x;
backimageverts[3].v = rtpos.y / -backimagesize.y;
}
else
{