radeon-common: Fix crash in glGetTexImage

Since texture images are now stored in miptrees, we cannot usually
access them directly via the Data pointer.

So we wrap Mesa's implementation by map/unmap calls.

This crash was triggered by Sauerbraten, Piglit now contains a
regression test.

Signed-off-by: Nicolai Haehnle <nhaehnle@gmail.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/r200/r200_tex.c b/src/mesa/drivers/dri/r200/r200_tex.c
index c0d1723c77..5daacb8c95 100644
--- a/src/mesa/drivers/dri/r200/r200_tex.c
+++ b/src/mesa/drivers/dri/r200/r200_tex.c
@@ -512,6 +512,8 @@ void r200InitTextureFuncs( struct dd_function_table *functions )
 #else
    functions->TexSubImage3D		= _mesa_store_texsubimage3d;
 #endif
+   functions->GetTexImage               = radeonGetTexImage;
+   functions->GetCompressedTexImage     = radeonGetCompressedTexImage;
    functions->NewTextureObject		= r200NewTextureObject;
    //   functions->BindTexture		= r200BindTexture;
    functions->DeleteTexture		= r200DeleteTexture;