From: lordhavoc <lordhavoc@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Fri, 18 Jan 2002 20:21:55 +0000 (+0000)
Subject: minor optimization to fogged decal rendering
X-Git-Tag: RELEASE_0_2_0_RC1~715
X-Git-Url: https://de.git.xonotic.org/?a=commitdiff_plain;h=2db850514745da30d5d51246cf5c626e81b8e0bc;p=xonotic%2Fdarkplaces.git

minor optimization to fogged decal rendering


git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@1364 d7cf8633-e32d-0410-b094-e92efae38249
---

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);
+		}
 	}
 }