From e941687d4c0ebe229415da976c9a830ef0413f70 Mon Sep 17 00:00:00 2001
From: Monster Iestyn <iestynjealous@ntlworld.com>
Date: Fri, 18 Mar 2016 20:33:16 +0000
Subject: [PATCH] R_RenderMaskedSegRange now checks for slopes in the sector
lightlist
in other words, midtexture rendering should now correctly account for slopes from FOFs that could affect lighting/colormap
---
src/r_segs.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/src/r_segs.c b/src/r_segs.c
index fdae62d50..72315982d 100644
--- a/src/r_segs.c
+++ b/src/r_segs.c
@@ -360,10 +360,30 @@ void R_RenderMaskedSegRange(drawseg_t *ds, INT32 x1, INT32 x2)
for (i = 0; i < dc_numlights; i++)
{
+#ifdef ESLOPE
+ fixed_t leftheight, rightheight;
+#endif
light = &frontsector->lightlist[i];
rlight = &dc_lightlist[i];
+#ifdef ESLOPE
+ if (light->slope) {
+ leftheight = P_GetZAt(light->slope, ds->leftpos.x, ds->leftpos.y);
+ rightheight = P_GetZAt(light->slope, ds->rightpos.x, ds->rightpos.y);
+ } else
+ leftheight = rightheight = light->height;
+
+ leftheight -= viewz;
+ rightheight -= viewz;
+
+ rlight->height = (centeryfrac) - FixedMul(leftheight, ds->scale1);
+ rlight->heightstep = (centeryfrac) - FixedMul(rightheight, ds->scale2);
+ rlight->heightstep = (rlight->heightstep-rlight->height)/(ds->x2-ds->x1+1);
+ //if (x1 > ds->x1)
+ //rlight->height -= (x1 - ds->x1)*rlight->heightstep;
+#else
rlight->height = (centeryfrac) - FixedMul((light->height - viewz), spryscale);
rlight->heightstep = -FixedMul(rw_scalestep, (light->height - viewz));
+#endif
rlight->lightlevel = *light->lightlevel;
rlight->extra_colormap = light->extra_colormap;
rlight->flags = light->flags;