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/r300/r300_tex.c b/src/mesa/drivers/dri/r300/r300_tex.c
index e316e2d822..27b907019e 100644
--- a/src/mesa/drivers/dri/r300/r300_tex.c
+++ b/src/mesa/drivers/dri/r300/r300_tex.c
@@ -325,6 +325,8 @@ void r300InitTextureFuncs(struct dd_function_table *functions)
 	functions->TexSubImage1D = radeonTexSubImage1D;
 	functions->TexSubImage2D = radeonTexSubImage2D;
 	functions->TexSubImage3D = radeonTexSubImage3D;
+	functions->GetTexImage = radeonGetTexImage;
+	functions->GetCompressedTexImage = radeonGetCompressedTexImage;
 	functions->NewTextureObject = r300NewTextureObject;
 	functions->DeleteTexture = r300DeleteTexture;
 	functions->IsTextureResident = driIsTextureResident;