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Revise polymost HOM issue workaround in Duke's E1L1. Add code to remove very thin spans.

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This commit does not gain noticeable rendering performance, but at least should prevent weird polygon leakages
This commit is contained in:
nukeykt 2019-07-30 16:55:31 +09:00 committed by Christoph Oelckers
parent e999e2058c
commit d3994b0801
1 changed files with 11 additions and 0 deletions
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11
source/build/src/polymost.cpp
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@ -2850,6 +2850,9 @@ static void polymost_domost(float x0, float y0, float x1, float y1, float y0top
dm1.x = xbr;
}
dm0.x -= DOMOST_OFFSET;
dm1.x += DOMOST_OFFSET;
drawpoly_alpha = 0.f;
drawpoly_blend = 0;
@ -2923,6 +2926,14 @@ static void polymost_domost(float x0, float y0, float x1, float y1, float y0top
float const rdx = 1.f/dx;
for (bssize_t i = 0; i < scnt; i++)
{
if (spx[i] < x0)
spx[i] = x0;
else if (spx[i] > x1)
spx[i] = x1;
}
for (bssize_t z=0, vcnt=0; z<=scnt; z++,i=vcnt)
{
float t;