[Mesa-dev] [PATCH 5/7] i965/gen7: Add support for rasterization discard.

[Paul Berry]

On 22 December 2011 16:54, Eric Anholt <eric at anholt.net> wrote:

> Fixes the piglit discard-* tests.
>
> Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
> ---
>  src/mesa/drivers/dri/i965/gen7_sol_state.c |    8 +++++++-
>  1 files changed, 7 insertions(+), 1 deletions(-)
>
> diff --git a/src/mesa/drivers/dri/i965/gen7_sol_state.c
> b/src/mesa/drivers/dri/i965/gen7_sol_state.c
> index fcda08d..650f625 100644
> --- a/src/mesa/drivers/dri/i965/gen7_sol_state.c
> +++ b/src/mesa/drivers/dri/i965/gen7_sol_state.c
> @@ -37,6 +37,12 @@ static void
>  upload_sol_state(struct brw_context *brw)
>  {
>    struct intel_context *intel = &brw->intel;
> +   struct gl_context *ctx = &intel->ctx;
> +   uint32_t dw1 = 0;
> +
> +   /* _NEW_RASTERIZER_DISCARD */
> +   if (ctx->RasterDiscard)
> +      dw1 |= SO_RENDERING_DISABLE;
>

It looks like dw1 is set here but not used until patch 6/7.


>
>    /* Disable the SOL stage */
>    BEGIN_BATCH(3);
> @@ -48,7 +54,7 @@ upload_sol_state(struct brw_context *brw)
>
>  const struct brw_tracked_state gen7_sol_state = {
>    .dirty = {
> -      .mesa  = 0,
> +      .mesa  = _NEW_RASTERIZER_DISCARD,
>       .brw   = BRW_NEW_BATCH,
>       .cache = 0,
>    },
> --
> 1.7.7.3
>
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