diff options
| author | Brecht Van Lommel <brechtvanlommel@pandora.be> | 2012-02-03 01:46:11 +0400 |
|---|---|---|
| committer | Brecht Van Lommel <brechtvanlommel@pandora.be> | 2012-02-03 01:46:11 +0400 |
| commit | 5c9ad8653a99d8a0aa247e63ba25d0291328535e (patch) | |
| tree | e8f527c55ef190e4d04123be7f9c0b0b365cb989 /source/blender/render/intern | |
| parent | e3958015db99927329604044094be1e6d3453e2d (diff) | |
Fix #29921: render rasterization error in a corner case, only happened on 32bit
builds because of extended float precision, slightly tweaked code to avoid that,
so that it works the same as on 64bit.
Diffstat (limited to 'source/blender/render/intern')
| -rw-r--r-- | source/blender/render/intern/source/zbuf.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/source/blender/render/intern/source/zbuf.c b/source/blender/render/intern/source/zbuf.c index a46b3791693..0d5aed7dadb 100644 --- a/source/blender/render/intern/source/zbuf.c +++ b/source/blender/render/intern/source/zbuf.c @@ -212,9 +212,9 @@ void fillrect(int *rect, int x, int y, int val) } /* based on Liang&Barsky, for clipping of pyramidical volume */ -static short cliptestf(float p, float q, float *u1, float *u2) +static short cliptestf(float a, float b, float c, float d, float *u1, float *u2) { - float r; + float p= a + b, q= c + d, r; if(p<0.0f) { if(q<p) return 0; @@ -854,20 +854,20 @@ static int clipline(float v1[4], float v2[4]) /* return 0: do not draw */ 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)) { + 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= 1.01f*(v2[3]-v1[3]); v13= 1.01f*v1[3]; - if(cliptestf(-dx-dz, v1[0]+v13, &u1,&u2)) { - if(cliptestf(dx-dz, v13-v1[0], &u1,&u2)) { + 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]+v13, &u1,&u2)) { - if(cliptestf(dy-dz, v13-v1[1], &u1,&u2)) { + if(cliptestf(-dy, -dz, v1[1], v13, &u1,&u2)) { + if(cliptestf(dy, -dz, v13, -v1[1], &u1,&u2)) { if(u2<1.0f) { v2[0]= v1[0]+u2*dx; @@ -1628,8 +1628,8 @@ static void clippyra(float *labda, float *v1, float *v2, int *b2, int *b3, int a * who would have thought that of L&B! */ - if(cliptestf(-da-dw, v13+v1[a], &u1,&u2)) { - if(cliptestf(da-dw, v13-v1[a], &u1,&u2)) { + if(cliptestf(-da, -dw, v13, v1[a], &u1,&u2)) { + if(cliptestf(da, -dw, v13, -v1[a], &u1,&u2)) { *b3=1; if(u2<1.0f) { labda[1]= u2; |