st/mesa: fill in stImage->level in st_generate_mipmap()

Before, this field was always zero for all the new mipmap levels.
Fixes problems with glGetTexImage() from a generated mipmap.

diff --git a/src/mesa/state_tracker/st_gen_mipmap.c b/src/mesa/state_tracker/st_gen_mipmap.c
index f67d7b4..4a3e38d 100644 (file)
--- a/src/mesa/state_tracker/st_gen_mipmap.c
+++ b/src/mesa/state_tracker/st_gen_mipmap.c
@@ -297,7 +297,9 @@ st_generate_mipmap(GLcontext *ctx, GLenum target,
 
       dstImage->TexFormat = srcImage->TexFormat;
 
-      stImage = (struct st_texture_image *) dstImage;
+      stImage = st_texture_image(dstImage);
+      stImage->level = dstLevel;
+
       pipe_texture_reference(&stImage->pt, pt);
    }
 }