On 2018-09-12 09:05:44, wrote:
> From: Andrii Simiklit <andrii.simik...@globallogic.com>
>
> There's no point reverting to the last saved point if that save point is
> the empty batch, we will just repeat ourselves.
>
> CC: Chris Wilson <ch...@chris-wilson.co.uk>
> Fixes: 3faf56ffbdeb "intel: Add an interface for saving/restoring
> the batchbuffer state."
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107626
> ---
> src/mesa/drivers/dri/i965/brw_compute.c | 3 ++-
> src/mesa/drivers/dri/i965/brw_draw.c | 3 ++-
> src/mesa/drivers/dri/i965/genX_blorp_exec.c | 3 ++-
> src/mesa/drivers/dri/i965/intel_batchbuffer.c | 7 +++++++
> src/mesa/drivers/dri/i965/intel_batchbuffer.h | 1 +
> 5 files changed, 14 insertions(+), 3 deletions(-)
>
> diff --git a/src/mesa/drivers/dri/i965/brw_compute.c
> b/src/mesa/drivers/dri/i965/brw_compute.c
> index de08fc3..5c8e3a5 100644
> --- a/src/mesa/drivers/dri/i965/brw_compute.c
> +++ b/src/mesa/drivers/dri/i965/brw_compute.c
> @@ -167,7 +167,7 @@ static void
> brw_dispatch_compute_common(struct gl_context *ctx)
> {
> struct brw_context *brw = brw_context(ctx);
> - bool fail_next = false;
> + bool fail_next;
>
> if (!_mesa_check_conditional_render(ctx))
> return;
> @@ -185,6 +185,7 @@ brw_dispatch_compute_common(struct gl_context *ctx)
> intel_batchbuffer_require_space(brw, 600);
> brw_require_statebuffer_space(brw, 2500);
> intel_batchbuffer_save_state(brw);
> + fail_next = intel_batchbuffer_saved_state_is_empty(brw);
>
> retry:
> brw->batch.no_wrap = true;
> diff --git a/src/mesa/drivers/dri/i965/brw_draw.c
> b/src/mesa/drivers/dri/i965/brw_draw.c
> index 8536c04..19ee396 100644
> --- a/src/mesa/drivers/dri/i965/brw_draw.c
> +++ b/src/mesa/drivers/dri/i965/brw_draw.c
> @@ -885,7 +885,7 @@ brw_draw_single_prim(struct gl_context *ctx,
> {
> struct brw_context *brw = brw_context(ctx);
> const struct gen_device_info *devinfo = &brw->screen->devinfo;
> - bool fail_next = false;
> + bool fail_next;
>
> /* Flag BRW_NEW_DRAW_CALL on every draw. This allows us to have
> * atoms that happen on every draw call.
> @@ -898,6 +898,7 @@ brw_draw_single_prim(struct gl_context *ctx,
> intel_batchbuffer_require_space(brw, 1500);
> brw_require_statebuffer_space(brw, 2400);
> intel_batchbuffer_save_state(brw);
> + fail_next = intel_batchbuffer_saved_state_is_empty(brw);
It seems like this will cause the WARN_ONCE to be hit incorrectly.
What about adding a 'bool empty_state', and checking that before
fail_next in the code that follows. If empty_state is true, I guess
you want to flush, but not emit the WARN_ONCE?
With that change,
series Reviewed-by: Jordan Justen <jordan.l.jus...@intel.com>
As always, it could be nice to get an r-b, or acked-by from Ken. :)
-Jordan
>
> if (brw->num_instances != prim->num_instances ||
> brw->basevertex != prim->basevertex ||
> diff --git a/src/mesa/drivers/dri/i965/genX_blorp_exec.c
> b/src/mesa/drivers/dri/i965/genX_blorp_exec.c
> index 34bfcad..fd9ce93 100644
> --- a/src/mesa/drivers/dri/i965/genX_blorp_exec.c
> +++ b/src/mesa/drivers/dri/i965/genX_blorp_exec.c
> @@ -268,7 +268,7 @@ genX(blorp_exec)(struct blorp_batch *batch,
> assert(batch->blorp->driver_ctx == batch->driver_batch);
> struct brw_context *brw = batch->driver_batch;
> struct gl_context *ctx = &brw->ctx;
> - bool check_aperture_failed_once = false;
> + bool check_aperture_failed_once;
>
> #if GEN_GEN >= 11
> /* The PIPE_CONTROL command description says:
> @@ -309,6 +309,7 @@ retry:
> intel_batchbuffer_require_space(brw, 1400);
> brw_require_statebuffer_space(brw, 600);
> intel_batchbuffer_save_state(brw);
> + check_aperture_failed_once = intel_batchbuffer_saved_state_is_empty(brw);
> brw->batch.no_wrap = true;
>
> #if GEN_GEN == 6
> diff --git a/src/mesa/drivers/dri/i965/intel_batchbuffer.c
> b/src/mesa/drivers/dri/i965/intel_batchbuffer.c
> index 4363b14..2dc6eb8 100644
> --- a/src/mesa/drivers/dri/i965/intel_batchbuffer.c
> +++ b/src/mesa/drivers/dri/i965/intel_batchbuffer.c
> @@ -299,6 +299,13 @@ intel_batchbuffer_save_state(struct brw_context *brw)
> brw->batch.saved.exec_count = brw->batch.exec_count;
> }
>
> +bool
> +intel_batchbuffer_saved_state_is_empty(struct brw_context *brw)
> +{
> + struct intel_batchbuffer *batch = &brw->batch;
> + return (batch->saved.map_next == batch->batch.map);
> +}
> +
> void
> intel_batchbuffer_reset_to_saved(struct brw_context *brw)
> {
> diff --git a/src/mesa/drivers/dri/i965/intel_batchbuffer.h
> b/src/mesa/drivers/dri/i965/intel_batchbuffer.h
> index 0632142..91720da 100644
> --- a/src/mesa/drivers/dri/i965/intel_batchbuffer.h
> +++ b/src/mesa/drivers/dri/i965/intel_batchbuffer.h
> @@ -24,6 +24,7 @@ struct intel_batchbuffer;
> void intel_batchbuffer_init(struct brw_context *brw);
> void intel_batchbuffer_free(struct intel_batchbuffer *batch);
> void intel_batchbuffer_save_state(struct brw_context *brw);
> +bool intel_batchbuffer_saved_state_is_empty(struct brw_context *brw);
> void intel_batchbuffer_reset_to_saved(struct brw_context *brw);
> void intel_batchbuffer_require_space(struct brw_context *brw, GLuint sz);
> int _intel_batchbuffer_flush_fence(struct brw_context *brw,
> --
> 2.7.4
>
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