From: havoc <havoc@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Thu, 27 Jun 2013 06:20:52 +0000 (+0000)
Subject: fix severe (crashing) bugs with two calls to qglDrawElements when using
X-Git-Tag: xonotic-v0.8.0~177
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=21a8b727a5bbc5ef0c7e7a48c49a16163e8cd50e;p=xonotic%2Fdarkplaces.git

fix severe (crashing) bugs with two calls to qglDrawElements when using
index buffers (this bug was hidden by gl_mesh_drawrangeelements being 1
by default)

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@11961 d7cf8633-e32d-0410-b094-e92efae38249
::stable-branch::merge=48aa8723e4e82f2329a6053f95075af8cbf37444
---

diff --git a/gl_backend.c b/gl_backend.c
index 81e71c3b..a03060c1 100644
--- a/gl_backend.c
+++ b/gl_backend.c
@@ -3112,7 +3112,7 @@ void R_Mesh_Draw(int firstvertex, int numvertices, int firsttriangle, int numtri
 				else
 #endif
 				{
-					qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_SHORT, (void *)(firsttriangle * sizeof(unsigned short[3])));
+					qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_SHORT, (void *)bufferoffset3s);
 					CHECKGLERROR
 				}
 			}
@@ -3128,7 +3128,7 @@ void R_Mesh_Draw(int firstvertex, int numvertices, int firsttriangle, int numtri
 				else
 #endif
 				{
-					qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_INT, (void *)(firsttriangle * sizeof(unsigned int[3])));
+					qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_INT, (void *)bufferoffset3i);
 					CHECKGLERROR
 				}
 			}