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Fix AABB culling bug

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This commit is contained in:
Magnus Norddahl 2016-11-21 05:09:53 +01:00
parent 2ba2dc7611
commit e7d64a380a
2 changed files with 36 additions and 50 deletions
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84
src/r_poly_cull.cpp
View file

@ -130,7 +130,7 @@ void PolyCull::MarkSegmentCulled(int x1, int x2)
{
// Find last segment
int merge = cur;
while (merge + 1 != SolidSegments.size() && SolidSegments[merge + 1].X1 <= x2)
while (merge + 1 != (int)SolidSegments.size() && SolidSegments[merge + 1].X1 <= x2)
merge++;
// Apply new merged range
@ -168,57 +168,43 @@ bool PolyCull::CheckBBox(float *bspcoord)
// Occlusion test using solid segments:
int boxx;
int boxy;
int boxpos;
double x1, y1, x2, y2;
// Find the corners of the box
// that define the edges from current viewpoint.
if (ViewPos.X <= bspcoord[BOXLEFT])
boxx = 0;
else if (ViewPos.X < bspcoord[BOXRIGHT])
boxx = 1;
else
boxx = 2;
if (ViewPos.Y >= bspcoord[BOXTOP])
boxy = 0;
else if (ViewPos.Y > bspcoord[BOXBOTTOM])
boxy = 1;
else
boxy = 2;
boxpos = (boxy << 2) + boxx;
if (boxpos == 5)
return true;
static const int checkcoord[12][4] =
static const int lines[4][4] =
{
{ 3,0,2,1 },
{ 3,0,2,0 },
{ 3,1,2,0 },
{ 0 },
{ 2,0,2,1 },
{ 0,0,0,0 },
{ 3,1,3,0 },
{ 0 },
{ 2,0,3,1 },
{ 2,1,3,1 },
{ 2,1,3,0 }
{ BOXLEFT, BOXBOTTOM, BOXRIGHT, BOXBOTTOM },
{ BOXRIGHT, BOXBOTTOM, BOXRIGHT, BOXTOP },
{ BOXRIGHT, BOXTOP, BOXLEFT, BOXTOP },
{ BOXLEFT, BOXTOP, BOXLEFT, BOXBOTTOM }
};
x1 = bspcoord[checkcoord[boxpos][0]];
y1 = bspcoord[checkcoord[boxpos][1]];
x2 = bspcoord[checkcoord[boxpos][2]];
y2 = bspcoord[checkcoord[boxpos][3]];
int sx1, sx2;
if (GetSegmentRangeForLine(x1, y1, x2, y2, sx1, sx2))
return !IsSegmentCulled(sx1, sx2);
else
return true;
bool foundline = false;
int minsx1, maxsx2;
for (int i = 0; i < 4; i++)
{
int j = i < 3 ? i + 1 : 0;
int x1 = bspcoord[lines[i][0]];
int y1 = bspcoord[lines[i][1]];
int x2 = bspcoord[lines[i][2]];
int y2 = bspcoord[lines[i][3]];
int sx1, sx2;
if (GetSegmentRangeForLine(x1, y1, x2, y2, sx1, sx2))
{
if (foundline)
{
minsx1 = MIN(minsx1, sx1);
maxsx2 = MAX(maxsx2, sx2);
}
else
{
minsx1 = sx1;
maxsx2 = sx2;
foundline = true;
}
}
}
if (!foundline)
return false;
return !IsSegmentCulled(minsx1, maxsx2);
}
bool PolyCull::GetSegmentRangeForLine(double x1, double y1, double x2, double y2, int &sx1, int &sx2) const

2
src/r_poly_triangle.h
View file

@ -69,7 +69,7 @@ public:
void SetTexture(FTexture *texture, uint32_t translationID)
{
if (translationID != -1 && translationID != 0)
if (translationID != 0xffffffff && translationID != 0)
{
FRemapTable *table = TranslationToTable(translationID);
if (table != nullptr && !table->Inactive)