[Mesa-dev] [PATCH 1/3] i965: Fix instanced geometry shaders on Gen8+.

[Jordan Justen]

On 2015-04-04 03:46:31, Kenneth Graunke wrote:
> Jordan added this in commit 741782b5948bb3d01d699f062a37513c2e73b076 for
> Gen7 platforms.  Embarassingly, this was missed for well over a year.

:( I'm not sure why I didn't enable gen8 at the same time back then.

Reviewed-by: Jordan Justen <jordan.l.justen at intel.com>

> Fixes Piglit's spec/arb_gpu_shader5/invocation-id-{basic,in-separate-gs}
> with MESA_EXTENSION_OVERRIDE=GL_ARB_gpu_shader5 set.
> 
> Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
> Cc: mesa-stable at lists.freedesktop.org
> ---
>  src/mesa/drivers/dri/i965/gen8_gs_state.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> Mini-series also available in the 'gen8sol' branch of ~kwg/mesa.
> 
> diff --git a/src/mesa/drivers/dri/i965/gen8_gs_state.c b/src/mesa/drivers/dri/i965/gen8_gs_state.c
> index 95cc123..46b9713 100644
> --- a/src/mesa/drivers/dri/i965/gen8_gs_state.c
> +++ b/src/mesa/drivers/dri/i965/gen8_gs_state.c
> @@ -82,6 +82,8 @@ gen8_upload_gs_state(struct brw_context *brw)
>        uint32_t dw7 = (brw->gs.prog_data->control_data_header_size_hwords <<
>                        GEN7_GS_CONTROL_DATA_HEADER_SIZE_SHIFT) |
>                        brw->gs.prog_data->dispatch_mode |
> +                     ((brw->gs.prog_data->invocations - 1) <<
> +                      GEN7_GS_INSTANCE_CONTROL_SHIFT) |
>                        GEN6_GS_STATISTICS_ENABLE |
>                        (brw->gs.prog_data->include_primitive_id ?
>                         GEN7_GS_INCLUDE_PRIMITIVE_ID : 0) |
> -- 
> 2.3.4
> 
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