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Cull walls

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This commit is contained in:
Magnus Norddahl 2016-11-13 13:24:36 +01:00
parent 27eb8e36ae
commit c914a7a7fe
2 changed files with 19 additions and 6 deletions
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22
src/r_poly.cpp
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@ -46,10 +46,7 @@ void RenderPolyBsp::Render()
// Setup working buffers
PolyVertexBuffer::Clear();
SolidSegments.clear();
SolidSegments.reserve(SolidCullScale + 2);
SolidSegments.push_back({ -0x7fff, -SolidCullScale });
SolidSegments.push_back({ SolidCullScale , 0x7fff });
ClearSolidSegments();
SectorSpriteRanges.clear();
SectorSpriteRanges.resize(numsectors);
SortedSprites.clear();
@ -92,6 +89,7 @@ void RenderPolyBsp::Render()
}
// Render front to back
ClearSolidSegments();
if (r_debug_cull)
{
for (auto it = PvsSectors.rbegin(); it != PvsSectors.rend(); ++it)
@ -363,6 +361,12 @@ void RenderPolyBsp::AddLine(seg_t *line, sector_t *frontsector, uint32_t subsect
if (pt1.Y * (pt1.X - pt2.X) + pt1.X * (pt2.Y - pt1.Y) >= 0)
return;
// Cull wall if not visible
int sx1, sx2;
bool hasSegmentRange = GetSegmentRangeForLine(line->v1->fX(), line->v1->fY(), line->v2->fX(), line->v2->fY(), sx1, sx2);
if (hasSegmentRange && IsSegmentCulled(sx1, sx2))
return;
double frontceilz1 = frontsector->ceilingplane.ZatPoint(line->v1);
double frontfloorz1 = frontsector->floorplane.ZatPoint(line->v1);
double frontceilz2 = frontsector->ceilingplane.ZatPoint(line->v2);
@ -384,6 +388,8 @@ void RenderPolyBsp::AddLine(seg_t *line, sector_t *frontsector, uint32_t subsect
wall.UnpeggedCeil = frontceilz1;
wall.Texpart = side_t::mid;
wall.Render(worldToClip);
if (hasSegmentRange)
MarkSegmentCulled(sx1, sx2);
}
}
else
@ -972,6 +978,14 @@ void RenderPolyBsp::RenderPlayerSprite(DPSprite *sprite, AActor *owner, float bo
//R_DrawVisSprite(vis);
}
void RenderPolyBsp::ClearSolidSegments()
{
SolidSegments.clear();
SolidSegments.reserve(SolidCullScale + 2);
SolidSegments.push_back({ -0x7fff, -SolidCullScale });
SolidSegments.push_back({ SolidCullScale , 0x7fff });
}
bool RenderPolyBsp::IsSegmentCulled(int x1, int x2) const
{
int next = 0;

3
src/r_poly.h
View file

@ -132,11 +132,10 @@ private:
// Checks BSP node/subtree bounding box.
// Returns true if some part of the bbox might be visible.
bool CheckBBox(float *bspcoord);
bool GetSegmentRangeForLine(double x1, double y1, double x2, double y2, int &sx1, int &sx2) const;
void MarkSegmentCulled(int x1, int x2);
bool IsSegmentCulled(int x1, int x2) const;
void ClearSolidSegments();
std::vector<subsector_t *> PvsSectors;
uint32_t NextSubsectorDepth = 0;