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render: more loop re-arrangement in R_LeadingEdge

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Signed-off-by: Kevin Shanahan <kmshanah@disenchant.net>
This commit is contained in:
Kevin Shanahan 2013-01-10 13:28:21 +10:30
parent c117cbbb7f
commit 03796f9042
1 changed files with 19 additions and 22 deletions
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41
common/r_edge.c
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@ -453,31 +453,28 @@ R_LeadingEdge(edge_t *edge)
surf2 = surf2->next;
} while (surf->key > surf2->key);
if (surf->key == surf2->key) {
// if it's two surfaces on the same plane, the one that's already
// active is in front, so keep going unless it's a bmodel
if (!surf->insubmodel)
goto continue_search;
// must be two bmodels in the same leaf; sort on 1/z
fu = (float)(edge->u - 0xFFFFF) * (1.0 / 0x100000);
newzi = surf->d_ziorigin + fv * surf->d_zistepv + fu * surf->d_zistepu;
newzibottom = newzi * 0.99;
testzi = surf2->d_ziorigin + fv * surf2->d_zistepv +
fu * surf2->d_zistepu;
if (newzibottom >= testzi)
goto gotposition;
newzitop = newzi * 1.01;
if (newzitop >= testzi && surf->d_zistepu >= surf2->d_zistepu)
goto gotposition;
if (surf->key != surf2->key)
goto gotposition;
// if it's two surfaces on the same plane, the one that's already
// active is in front, so keep going unless it's a bmodel
if (!surf->insubmodel)
goto continue_search;
}
goto gotposition;
// must be two bmodels in the same leaf; sort on 1/z
fu = (float)(edge->u - 0xFFFFF) * (1.0 / 0x100000);
newzi = surf->d_ziorigin + fv * surf->d_zistepv + fu * surf->d_zistepu;
newzibottom = newzi * 0.99;
testzi = surf2->d_ziorigin + fv * surf2->d_zistepv + fu * surf2->d_zistepu;
if (newzibottom >= testzi)
goto gotposition;
newzitop = newzi * 1.01;
if (newzitop >= testzi && surf->d_zistepu >= surf2->d_zistepu)
goto gotposition;
goto continue_search;
newtop:
// emit a span (obscures current top)