From: havoc <havoc@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Mon, 7 Apr 2003 06:40:44 +0000 (+0000)
Subject: disable use of scissor when stencil is not available (sure seems like a driver bug... 
X-Git-Tag: xonotic-v0.1.0preview~6672
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=6e3e978789b8d76be70bf3e00585991381d5aab4;p=xonotic%2Fdarkplaces.git

disable use of scissor when stencil is not available (sure seems like a driver bug, scissor should work)


git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@2929 d7cf8633-e32d-0410-b094-e92efae38249
---

diff --git a/r_shadow.c b/r_shadow.c
index 84a1484c..058d5589 100644
--- a/r_shadow.c
+++ b/r_shadow.c
@@ -542,6 +542,7 @@ void R_Shadow_Stage_Begin(void)
 	m.blendfunc2 = GL_ZERO;
 	R_Mesh_State(&m);
 	GL_Color(0, 0, 0, 1);
+	qglDisable(GL_SCISSOR_TEST);
 	r_shadowstage = SHADOWSTAGE_NONE;
 
 	c_rt_lights = c_rt_clears = c_rt_scissored = 0;
@@ -816,7 +817,9 @@ int R_Shadow_ScissorForBBox(const float *mins, const float *maxs)
 	if (!r_shadow_scissor.integer)
 		return false;
 	// if view is inside the box, just say yes it's visible
-	if (BoxesOverlap(r_origin, r_origin, mins, maxs))
+	// LordHavoc: for some odd reason scissor seems broken without stencil
+	// (?!?  seems like a driver bug) so abort if gl_stencil is false
+	if (!gl_stencil || BoxesOverlap(r_origin, r_origin, mins, maxs))
 	{
 		qglDisable(GL_SCISSOR_TEST);
 		return false;