[Piglit] [PATCH] readpix-z: asst. test improvements

[Brian Paul]

On 10/17/2012 05:43 PM, Eric Anholt wrote:
> Brian Paul<brianp at vmware.com>  writes:
>
>> 1. Do a simple test that glClear(GL_DEPTH_BUFFER_BIT) works as expected.
>> 2. Display the depth buffer contents as a grayscale image when not
>>     running in automatic mode to aid debugging.
>
> Since we've got lots of tests that clear the depth buffer and rely on it
> being cleared, this test doesn't make much sense to me -- if you're
> trying to sanity check bit quality of just depth glClear on window
> system framebuffers because fbo-clear-formats isn't covering your case,
> it seems like you'd want a cross of fbo-clear-formats and
> glx-visuals-depth.

I'm interested in the specific case of glClear(GL_DEPTH_BUFFER_BIT) 
followed by glReadPixels() with nothing in between.  It might not make 
sense to you but it's a case I'm specifically interested in for some 
specific wgl testing ATM.

-Brian