[Bug 89210] GS statistics fail on SNB

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89210

--- Comment #12 from Iago Toral <itoral at igalia.com> ---
Fixed in master with:

commit 2a06728ba0da5e4175843b1b53919d6167ca0aea
Author: Iago Toral Quiroga <itoral at igalia.com>
Date:   Fri Feb 20 08:21:25 2015 +0100

    i965/gen6: Fix GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED_ARB

    In gen6 we need to compute the primitive count in the generated GS program.
    The current implementation only counts full primitives, that is, if the
    output primitive type is a triangle strip, it won't count individual
    triangles in the strip, only complete strips.

    If we want to count basic primitives instead we have two options: rework
    the assembly code we generate for strip primitives or simply use
    CL_INVOCATION_COUNT to resolve the query and let the hardware do that work
    for us. This patch implements the latter approach.

    Fixes the following piglit test:
    bin/arb_pipeline_statistics_query-geom -auto

    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89210
    Tested-by: Mark Janes <mark.a.janes at intel.com>
    Reviewed-by: Ben Widawsky <ben at bwidawsk.net>

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