From: havoc <havoc@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Thu, 13 Jan 2005 18:26:26 +0000 (+0000)
Subject: now skips entire rtlight rendering process if light is too dark or does not emit... 
X-Git-Tag: xonotic-v0.1.0preview~5217
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=f55c4a9648c260b8855a8fa8e166de101d521df4;p=xonotic%2Fdarkplaces.git

now skips entire rtlight rendering process if light is too dark or does not emit any surface light - another 30% speed gain


git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@4932 d7cf8633-e32d-0410-b094-e92efae38249
---

diff --git a/r_shadow.c b/r_shadow.c
index 780159ed..fde1b98e 100644
--- a/r_shadow.c
+++ b/r_shadow.c
@@ -2331,6 +2331,22 @@ void R_DrawRTLight(rtlight_t *rtlight, int visiblevolumes)
 	shadowmesh_t *mesh;
 	rmeshstate_t m;
 
+	// skip lights that don't light (corona only lights)
+	if (rtlight->ambientscale + rtlight->diffusescale + rtlight->specularscale < 0.01)
+		return;
+
+	f = (rtlight->style >= 0 ? d_lightstylevalue[rtlight->style] : 128) * (1.0f / 256.0f);
+	VectorScale(rtlight->color, f, lightcolor);
+	if (VectorLength2(lightcolor) < 0.01)
+		return;
+	/*
+	if (rtlight->selected)
+	{
+		f = 2 + sin(realtime * M_PI * 4.0);
+		VectorScale(lightcolor, f, lightcolor);
+	}
+	*/
+
 	// loading is done before visibility checks because loading should happen
 	// all at once at the start of a level, not when it stalls gameplay.
 	// (especially important to benchmarks)
@@ -2394,16 +2410,6 @@ void R_DrawRTLight(rtlight_t *rtlight, int visiblevolumes)
 	if (R_Shadow_ScissorForBBox(cullmins, cullmaxs))
 		return;
 
-	f = (rtlight->style >= 0 ? d_lightstylevalue[rtlight->style] : 128) * (1.0f / 256.0f);
-	VectorScale(rtlight->color, f, lightcolor);
-	/*
-	if (rtlight->selected)
-	{
-		f = 2 + sin(realtime * M_PI * 4.0);
-		VectorScale(lightcolor, f, lightcolor);
-	}
-	*/
-
 	shadow = rtlight->shadow && (rtlight->isstatic ? r_rtworldshadows : r_rtdlightshadows);
 
 	if (shadow && (gl_stencil || visiblevolumes))