[Piglit] [PATCH] generator: clear before rendering with the builtin tests

[Ian Romanick]

On 04/05/2015 04:00 PM, Dave Airlie wrote:
> On 27 March 2015 at 12:18, Ilia Mirkin <imirkin at alum.mit.edu> wrote:
>> Can we just make shader_runner do a clear automatically? This has
>> happened to me a number of times.
> 
> I'm not sure we should do that though, I don't really like the idea of shader
> runner doing an implicit behavioural change,
> 
> but anyone else have an opinion?

We have a lot of tests that do multiple draws and checks to different
parts of the same window.  It's not obvious how we could do an automatic
clear without breaking those tests.

> Dave.
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