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-rw-r--r--src/mesa/main/fbobject.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mesa/main/fbobject.c b/src/mesa/main/fbobject.c
index aa8ba1882ce..792a92da35c 100644
--- a/src/mesa/main/fbobject.c
+++ b/src/mesa/main/fbobject.c
@@ -2564,6 +2564,8 @@ _mesa_GenerateMipmapEXT(GLenum target)
srcImage = _mesa_select_tex_image(ctx, texObj, target, texObj->BaseLevel);
if (!srcImage) {
_mesa_unlock_texture(ctx, texObj);
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glGenerateMipmap(zero size base image)");
return;
}