disable use of scissor when stencil is not available (sure seems like a driver bug...

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 84a1484cd78122d6dd2eefba69b890beb860fefd..058d5589b96c125b7e19b444ae747487b6b80f49 100644 (file)
--- 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;