diff options
| -rw-r--r-- | source/blender/render/intern/source/zbuf.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/source/blender/render/intern/source/zbuf.c b/source/blender/render/intern/source/zbuf.c index 1cbe015731a..608b274de41 100644 --- a/source/blender/render/intern/source/zbuf.c +++ b/source/blender/render/intern/source/zbuf.c @@ -1569,25 +1569,30 @@ static void clipp(float *v1, float *v2, int b1, int *b2, int *b3, int a) static int clipline(float *v1, float *v2) /* return 0: do not draw */ { float dz,dw, u1=0.0, u2=1.0; - float dx, dy; + float dx, dy, v13; dz= v2[2]-v1[2]; dw= v2[3]-v1[3]; + /* this 1.01 is for clipping x and y just a tinsy larger. that way it is + filled in with zbufwire correctly when rendering in parts. otherwise + you see line endings at edges... */ + if(cliptestf(-dz-dw, v1[3]+v1[2], &u1,&u2)) { if(cliptestf(dz-dw, v1[3]-v1[2], &u1,&u2)) { dx= v2[0]-v1[0]; - dz= v2[3]-v1[3]; - - if(cliptestf(-dx-dz, v1[0]+v1[3], &u1,&u2)) { - if(cliptestf(dx-dz, v1[3]-v1[0], &u1,&u2)) { + dz= 1.01*(v2[3]-v1[3]); + v13= 1.01*v1[3]; + + if(cliptestf(-dx-dz, v1[0]+v13, &u1,&u2)) { + if(cliptestf(dx-dz, v13-v1[0], &u1,&u2)) { dy= v2[1]-v1[1]; - if(cliptestf(-dy-dz,v1[1]+v1[3],&u1,&u2)) { - if(cliptestf(dy-dz,v1[3]-v1[1],&u1,&u2)) { - + if(cliptestf(-dy-dz, v1[1]+v13, &u1,&u2)) { + if(cliptestf(dy-dz, v13-v1[1], &u1,&u2)) { + if(u2<1.0) { v2[0]= v1[0]+u2*dx; v2[1]= v1[1]+u2*dy; |