From 2db850514745da30d5d51246cf5c626e81b8e0bc Mon Sep 17 00:00:00 2001
From: lordhavoc <lordhavoc@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Fri, 18 Jan 2002 20:21:55 +0000
Subject: [PATCH] minor optimization to fogged decal rendering
git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@1364 d7cf8633-e32d-0410-b094-e92efae38249
---
r_decals.c | 76 ++++++++++++++++++++++++++++--------------------------
1 file changed, 39 insertions(+), 37 deletions(-)
diff --git a/r_decals.c b/r_decals.c
index 84b9d842..07a350fc 100644
--- a/r_decals.c
+++ b/r_decals.c
@@ -287,49 +287,51 @@ void R_DrawDecals (void)
VectorCopy(r->dir, dir);
}
- dist = -PlaneDiff(r->org, surf->plane);
- VectorMA(r->org, dist, surf->plane->normal, impact);
-
- ds = (int) (DotProduct(impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3]) - surf->texturemins[0];
- dt = (int) (DotProduct(impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3]) - surf->texturemins[1];
+ m.ca = r->color[3] * exp(fogdensity/DotProduct(v,v));
- if (ds < 0 || dt < 0 || ds > surf->extents[0] || dt > surf->extents[1])
+ if (m.ca >= 0.01f)
{
- // this should never happen
- continue;
- }
+ dist = -PlaneDiff(r->org, surf->plane);
+ VectorMA(r->org, dist, surf->plane->normal, impact);
- tex = &particletexture[r->tex][1];
- VectorVectors(dir, right, up);
- VectorScale(right, r->scale, right);
- VectorScale(up, r->scale, up);
- tvertex[0][0] = org[0] - right[0] - up[0];
- tvertex[0][1] = org[1] - right[1] - up[1];
- tvertex[0][2] = org[2] - right[2] - up[2];
- tvertex[0][3] = tex->s1;
- tvertex[0][4] = tex->t1;
- tvertex[1][0] = org[0] - right[0] + up[0];
- tvertex[1][1] = org[1] - right[1] + up[1];
- tvertex[1][2] = org[2] - right[2] + up[2];
- tvertex[1][3] = tex->s1;
- tvertex[1][4] = tex->t2;
- tvertex[2][0] = org[0] + right[0] + up[0];
- tvertex[2][1] = org[1] + right[1] + up[1];
- tvertex[2][2] = org[2] + right[2] + up[2];
- tvertex[2][3] = tex->s2;
- tvertex[2][4] = tex->t2;
- tvertex[3][0] = org[0] + right[0] - up[0];
- tvertex[3][1] = org[1] + right[1] - up[1];
- tvertex[3][2] = org[2] + right[2] - up[2];
- tvertex[3][3] = tex->s2;
- tvertex[3][4] = tex->t1;
+ ds = (int) (DotProduct(impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3]) - surf->texturemins[0];
+ dt = (int) (DotProduct(impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3]) - surf->texturemins[1];
- // if the surface is transparent, render as transparent
- m.transparent = !(surf->flags & SURF_CLIPSOLID);
- m.ca = r->color[3] * exp(fogdensity/DotProduct(v,v));
+ if (ds < 0 || dt < 0 || ds > surf->extents[0] || dt > surf->extents[1])
+ {
+ // this should never happen
+ continue;
+ }
- if (m.ca >= (1.0f / 255.0f))
+ tex = &particletexture[r->tex][1];
+ VectorVectors(dir, right, up);
+ VectorScale(right, r->scale, right);
+ VectorScale(up, r->scale, up);
+ tvertex[0][0] = org[0] - right[0] - up[0];
+ tvertex[0][1] = org[1] - right[1] - up[1];
+ tvertex[0][2] = org[2] - right[2] - up[2];
+ tvertex[0][3] = tex->s1;
+ tvertex[0][4] = tex->t1;
+ tvertex[1][0] = org[0] - right[0] + up[0];
+ tvertex[1][1] = org[1] - right[1] + up[1];
+ tvertex[1][2] = org[2] - right[2] + up[2];
+ tvertex[1][3] = tex->s1;
+ tvertex[1][4] = tex->t2;
+ tvertex[2][0] = org[0] + right[0] + up[0];
+ tvertex[2][1] = org[1] + right[1] + up[1];
+ tvertex[2][2] = org[2] + right[2] + up[2];
+ tvertex[2][3] = tex->s2;
+ tvertex[2][4] = tex->t2;
+ tvertex[3][0] = org[0] + right[0] - up[0];
+ tvertex[3][1] = org[1] + right[1] - up[1];
+ tvertex[3][2] = org[2] + right[2] - up[2];
+ tvertex[3][3] = tex->s2;
+ tvertex[3][4] = tex->t1;
+
+ // if the surface is transparent, render as transparent
+ m.transparent = !(surf->flags & SURF_CLIPSOLID);
R_Mesh_Draw(&m);
+ }
}
}
--
2.39.5