[Mesa-dev] [PATCH 6/8] nir: Add nir_texop_samples_identical opcode

[Kenneth Graunke]

On Wednesday, November 18, 2015 03:46:52 PM Ian Romanick wrote:
> From: Ian Romanick <ian.d.romanick at intel.com>
> 
> This is the NIR analog to GLSL IR ir_samples_identical.  However, the
> NIR has an extra source.  This is a fake sample index with a type
> nir_tex_src_ms_index.  This enables backends to (likely) share more code
> with the existing nir_texop_txf_ms implementation.
> 
> Signed-off-by: Ian Romanick <ian.d.romanick at intel.com>

The extra source is a little weird, but I see why you did it - it makes
it really easy to fall through to the existing code.  Seems okay.
Fortunately, none of this is baked in stone, so we can always change it
later if we really want :)
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