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- avoid integer math for wall sprites.

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This commit is contained in:
Christoph Oelckers 2022-08-22 18:18:05 +02:00
parent c59e4f8a10
commit 7a45738d7e
1 changed files with 7 additions and 7 deletions
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14
source/core/rendering/scene/hw_walls.cpp
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@ -1127,7 +1127,6 @@ void HWWall::ProcessWallSprite(HWDrawInfo* di, tspritetype* spr, sectortype* sec
seg = nullptr;
Sprite = spr;
DVector2 pos[2];
int sprz = spr->int_pos().Z;
GetWallSpritePosition(spr, spr->pos.XY(), pos, true);
glseg.x1 = pos[0].X;
@ -1187,13 +1186,14 @@ void HWWall::ProcessWallSprite(HWDrawInfo* di, tspritetype* spr, sectortype* sec
if (spr->cstat & CSTAT_SPRITE_YFLIP)
topofs = -topofs;
sprz -= ((topofs * spr->yrepeat) << 2);
float yrepeat = spr->yrepeat * (1.f / 64.f);
float sprz = spr->pos.Z - topofs * yrepeat;
if (spr->cstat & CSTAT_SPRITE_YCENTER)
{
sprz += ((height * spr->yrepeat) << 1);
if (height & 1) sprz += (spr->yrepeat << 1); // Odd yspans (taken from polymost as-is)
sprz += height * yrepeat * 0.5f;
if (height & 1) sprz += yrepeat * 0.5f; // Odd yspans
}
glseg.fracleft = 0;
@ -1203,8 +1203,8 @@ void HWWall::ProcessWallSprite(HWDrawInfo* di, tspritetype* spr, sectortype* sec
tcs[UPLFT].v = tcs[UPRGT].v = (spr->cstat & CSTAT_SPRITE_YFLIP) ? 1.f : 0.f;
tcs[LOLFT].v = tcs[LORGT].v = (spr->cstat & CSTAT_SPRITE_YFLIP) ? 0.f : 1.f;
zbottom[0] = zbottom[1] = (sprz) * (1 / -256.);
ztop[0] = ztop[1] = (sprz - ((height * spr->yrepeat) << 2)) * (1 / -256.);
zbottom[0] = zbottom[1] = -sprz;
ztop[0] = ztop[1] = -sprz + height * yrepeat;
if (zbottom[0] > ztop[0])
{
// reorder coordinates to make the clipping code below behave.