From: Nicolai Haehnle <nhaehnle@gmail.com>
Date: Sun, 27 Jul 2008 19:40:17 +0000 (+0200)
Subject: r300: Fix a crash related to depth textures (triggered by Glest w/ shadowmaps)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c1fb448ce8dd98f8e5fd5a39707f96cc14535bd4;p=mesa.git

r300: Fix a crash related to depth textures (triggered by Glest w/ shadowmaps)
---

diff --git a/src/mesa/drivers/dri/r300/r300_tex.c b/src/mesa/drivers/dri/r300/r300_tex.c
index c8f02c4ef5b..f7f49729bc8 100644
--- a/src/mesa/drivers/dri/r300/r300_tex.c
+++ b/src/mesa/drivers/dri/r300/r300_tex.c
@@ -944,6 +944,8 @@ static void r300TexParameter(GLcontext * ctx, GLenum target,
 		break;
 
 	case GL_DEPTH_TEXTURE_MODE:
+		if (!texObj->Image[0][texObj->BaseLevel])
+			return;
 		if (texObj->Image[0][texObj->BaseLevel]->TexFormat->BaseFormat
 		    == GL_DEPTH_COMPONENT) {
 			r300SetDepthTexMode(texObj);