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Improve depth fighting mitigation for floor aligned sprites.

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git-svn-id: https://svn.eduke32.com/eduke32@5403 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
terminx 2015-10-23 23:00:10 +00:00
parent c57be0fbdd
commit 5b24fc4f42
1 changed files with 9 additions and 6 deletions
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15
polymer/eduke32/build/src/polymost.c
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@ -4500,13 +4500,16 @@ void polymost_drawsprite(int32_t snum)
// Project rotated 3D points to screen
const int foff_sign = (tspr->z > globalposz) ? -1 : 1;
float fadjust = 0.f;
int fadjust = 0;
if (tspr->z == sec->ceilingz) tspr->z++, fadjust = .001f * tspr->owner;
if (tspr->z == sec->floorz) tspr->z--, fadjust = .001f * tspr->owner;
// unfortunately, offsetting by only 1 isn't enough on most Android devices
if (tspr->z == sec->ceilingz || tspr->z == sec->ceilingz + 1)
tspr->z = sec->ceilingz + 2, fadjust = (tspr->owner & 31);
float f = (fadjust + (float) (tspr->z - globalposz) + foff_sign) * gyxscale;
if (tspr->z == sec->floorz || tspr->z == sec->floorz - 1)
tspr->z = sec->floorz - 2, fadjust = -((tspr->owner & 31));
float f = (float)(tspr->z - globalposz + fadjust) * gyxscale;
for (int j = 0; j < npoints; j++)
{
@ -4518,7 +4521,7 @@ void polymost_drawsprite(int32_t snum)
// gd? Copied from floor rendering code
xtex.d = 0;
ytex.d = gxyaspect / (double)(tspr->z - globalposz + foff_sign);
ytex.d = gxyaspect / (double)(tspr->z - globalposz + fadjust);
otex.d = -ghoriz * ytex.d;
// copied&modified from relative alignment