Re: [Mesa3d-users] tnl/t_draw.c:205: bind_inputs: Assertion `inputs[i]->BufferObj->Pointer' failed.

[Brian P. <bri...@tu...>]

Utkarsh Ayachit wrote:
> Hi Brian,
> 
> I am trying to come up with a small test case that reproduces this issue 
> that we are having with ParaView using Mesa 7.1 (as well as git-Mesa) on 
> a 64 bit debian box.
> 
> The assertion fails following repeated creation/deletion of display 
> lists (ofcourse when display lists are not used, everything is peachy).
> 
> For debugging purposes I put a printf as follows in tnl/t_draw.c:
> 
> static void bind_inputs( GLcontext *ctx,
> 			 const struct gl_client_array *inputs[],
> 			 GLint count,
> 			 struct gl_buffer_object **bo,
> 			 GLuint *nr_bo )
> {
>     ...
>     for (i = 0; i < VERT_ATTRIB_MAX; i++) {
>        const void *ptr;
> 
>        if (inputs[i]->BufferObj->Name) {
> 	 if (!inputs[i]->BufferObj->Pointer) {
> 	    ...
> 	
> 	    printf("i : %i\n", i);
> 	    printf("name: %i\n", inputs[i]->BufferObj->Name);
> 	    assert(inputs[i]->BufferObj->Pointer);
> 	 }
>     ...
> }
> 
> On successful runs it looks like:
> i : 0
> name: 1
> i : 0
> name: 1
> i : 31
> name: 1
> 
> However when the assertion fails, the output is:
> i : 0
> name: 1
> i : 31
> name: 10999
> 
> Not sure that's very helpful, perhaps you can point me in the right 
> direction for producing more relevant debug output.

I haven't seen that one before.  Do you happen to have a small test 
program that I could try here?  I think I've got a 64-bit Linux install 
here somewhere...

You might also try running with valgrind to see if it finds anything.

-Brian