Mesa/u_Fix-crash-in-swrast-when-setting-a-texture-for-a-pix.patch

From 26de08de6f27a5fe5fc6aaeee0ebedf40626ab04 Mon Sep 17 00:00:00 2001
From: Tobias Johannes Klausmann <tobias.johannes.klausmann@mni.thm.de>
Date: Fri, 20 Apr 2012 11:52:31 +0200
Subject: [PATCH] When glXBindTexImageEXT is called and SWrast is used there
 will be a crash when sPriv->swrast_loader->getImage() is
 called from swrastSetTexBuffer2(). Reason: no memory has
 been allocated for the destination thus texImage->Data is
 NULL. Call ctx->Driver.TexImage2D() to initialize this. If
 memory has been allocated in a previous call free it first.

Signed-off-by: Egbert Eich <eich@freedesktop.org>

for 8.0.1

Ported to 8.0.2
---
 src/mesa/drivers/dri/swrast/swrast.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/swrast/swrast.c b/src/mesa/drivers/dri/swrast/swrast.c
index d18dd09..dd7d0c0 100644
--- a/src/mesa/drivers/dri/swrast/swrast.c
+++ b/src/mesa/drivers/dri/swrast/swrast.c
@@ -63,6 +63,7 @@
 static void swrastSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
 				GLint texture_format, __DRIdrawable *dPriv)
 {
+    GET_CURRENT_CONTEXT(ctx);
     struct dri_context *dri_ctx;
     int x, y, w, h;
     __DRIscreen *sPriv = dPriv->driScreenPriv;
@@ -93,6 +94,13 @@ static void swrastSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
 
     _mesa_init_teximage_fields(&dri_ctx->Base, texImage,
 			       w, h, 1, 0, internalFormat, texFormat);
+    
+    if (texImage->Data)
+	ctx->Driver.FreeTexImageData(ctx, texImage);
+    
+    ctx->Driver.TexImage2D(ctx, target, 0, internalFormat,
+			   w, h, 0, texture_format, GL_UNSIGNED_INT_8_8_8_8,
+			   NULL, &ctx->Unpack, texObj, texImage);
 
     sPriv->swrast_loader->getImage(dPriv, x, y, w, h, (char *)swImage->Buffer,
 				   dPriv->loaderPrivate);
-- 
1.7.7