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- small but important optimization: Two-sided lines with both sides in the same sector don't really require vertex splitting for precise rendering.

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This commit is contained in:
Christoph Oelckers 2014-08-04 23:00:40 +02:00
parent 00e4d4e2df
commit b9ffb51d0c
3 changed files with 3 additions and 1 deletions
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1
src/gl/scene/gl_wall.h
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@ -99,6 +99,7 @@ public:
GLWF_GLOW=8, // illuminated by glowing flats GLWF_GLOW=8, // illuminated by glowing flats
GLWF_NOSPLITUPPER=16, GLWF_NOSPLITUPPER=16,
GLWF_NOSPLITLOWER=32, GLWF_NOSPLITLOWER=32,
GLWF_NOSPLIT=64,
}; };
enum enum

1
src/gl/scene/gl_walls.cpp
View file

@ -984,6 +984,7 @@ void GLWall::DoMidTexture(seg_t * seg, bool drawfogboundary,
// //
FloatRect *splitrect; FloatRect *splitrect;
int v = gltexture->GetAreas(&splitrect); int v = gltexture->GetAreas(&splitrect);
if (seg->frontsector == seg->backsector) flags |= GLWF_NOSPLIT; // we don't need to do vertex splits if a line has both sides in the same sector
if (v>0 && !drawfogboundary && !(seg->linedef->flags&ML_WRAP_MIDTEX)) if (v>0 && !drawfogboundary && !(seg->linedef->flags&ML_WRAP_MIDTEX))
{ {
// split the poly! // split the poly!

2
src/gl/scene/gl_walls_draw.cpp
View file

@ -166,7 +166,7 @@ void GLWall::SetupLights()
void GLWall::RenderWall(int textured, unsigned int *store) void GLWall::RenderWall(int textured, unsigned int *store)
{ {
static texcoord tcs[4]; // making this variable static saves us a relatively costly stack integrity check. static texcoord tcs[4]; // making this variable static saves us a relatively costly stack integrity check.
bool split = (gl_seamless && !(textured&RWF_NOSPLIT) && seg->sidedef != NULL && !(seg->sidedef->Flags & WALLF_POLYOBJ)); bool split = (gl_seamless && !(textured&RWF_NOSPLIT) && seg->sidedef != NULL && !(seg->sidedef->Flags & WALLF_POLYOBJ) && !(flags & GLWF_NOSPLIT));
tcs[0]=lolft; tcs[0]=lolft;
tcs[1]=uplft; tcs[1]=uplft;