Am 22.04.2016 um 18:22 schrieb Nicolai Hähnle:
> On 22.04.2016 08:56, Roland Scheidegger wrote:
>> I don't quite understand why this is necessary.
>> Couldn't you just handle such failures in the driver easily?
>
> How? When we need a new query buffer due to command buffer flush, and
> that buffer allocation fails, there's no easy way out (that still
> produces correct results). I suppose we could try to stall everything,
> store results so far off to the side on the CPU, and then try to
> continue by re-using the already allocated buffer.
But if you couldn't end the query due to this failure, how are you going
to return correct results anyway? That's what I don't understand. I
don't think the gl error will really help an app much.
There's likely more functions which potentially do allocation as a side
effect somewhere in the driver, and we don't really care about that neither.
Roland
>
> But that seems like an awful lot of work + a lot of code that won't
> really ever be tested for handling what is an out of memory condition
> that will soon lead to failures elsewhere anyway.
>
> Nicolai
>
>> I can't
>> quite see why informing the state tracker of it really helps.
>>
>> Roland
>>
>> Am 20.04.2016 um 17:43 schrieb Nicolai Hähnle:
>>> From: Nicolai Hähnle <nicolai.haeh...@amd.com>
>>>
>>> Even when begin_query succeeds, there can still be failures in query
>>> handling.
>>> For example for radeon, additional buffers may have to be allocated when
>>> queries span multiple command buffers.
>>> ---
>>> src/gallium/drivers/ddebug/dd_context.c | 4 ++--
>>> src/gallium/drivers/freedreno/freedreno_query.c | 3 ++-
>>> src/gallium/drivers/i915/i915_query.c | 3 ++-
>>> src/gallium/drivers/ilo/ilo_query.c | 6 ++++--
>>> src/gallium/drivers/llvmpipe/lp_query.c | 4 +++-
>>> src/gallium/drivers/noop/noop_pipe.c | 3 ++-
>>> src/gallium/drivers/nouveau/nv30/nv30_query.c | 3 ++-
>>> src/gallium/drivers/nouveau/nv50/nv50_query.c | 3 ++-
>>> src/gallium/drivers/nouveau/nvc0/nvc0_query.c | 3 ++-
>>> src/gallium/drivers/r300/r300_query.c | 8 +++++---
>>> src/gallium/drivers/radeon/r600_query.c | 3 ++-
>>> src/gallium/drivers/rbug/rbug_context.c | 9 ++++++---
>>> src/gallium/drivers/softpipe/sp_query.c | 3 ++-
>>> src/gallium/drivers/svga/svga_pipe_query.c | 3 ++-
>>> src/gallium/drivers/swr/swr_query.cpp | 3 ++-
>>> src/gallium/drivers/trace/tr_context.c | 6 ++++--
>>> src/gallium/drivers/vc4/vc4_query.c | 3 ++-
>>> src/gallium/drivers/virgl/virgl_query.c | 3 ++-
>>> src/gallium/include/pipe/p_context.h | 2 +-
>>> 19 files changed, 49 insertions(+), 26 deletions(-)
>>>
>>> diff --git a/src/gallium/drivers/ddebug/dd_context.c
>>> b/src/gallium/drivers/ddebug/dd_context.c
>>> index 72a950a..d06efbc 100644
>>> --- a/src/gallium/drivers/ddebug/dd_context.c
>>> +++ b/src/gallium/drivers/ddebug/dd_context.c
>>> @@ -104,13 +104,13 @@ dd_context_begin_query(struct pipe_context
>>> *_pipe, struct pipe_query *query)
>>> return pipe->begin_query(pipe, dd_query_unwrap(query));
>>> }
>>>
>>> -static void
>>> +static bool
>>> dd_context_end_query(struct pipe_context *_pipe, struct pipe_query
>>> *query)
>>> {
>>> struct dd_context *dctx = dd_context(_pipe);
>>> struct pipe_context *pipe = dctx->pipe;
>>>
>>> - pipe->end_query(pipe, dd_query_unwrap(query));
>>> + return pipe->end_query(pipe, dd_query_unwrap(query));
>>> }
>>>
>>> static boolean
>>> diff --git a/src/gallium/drivers/freedreno/freedreno_query.c
>>> b/src/gallium/drivers/freedreno/freedreno_query.c
>>> index a942705..18e0c79 100644
>>> --- a/src/gallium/drivers/freedreno/freedreno_query.c
>>> +++ b/src/gallium/drivers/freedreno/freedreno_query.c
>>> @@ -66,11 +66,12 @@ fd_begin_query(struct pipe_context *pctx, struct
>>> pipe_query *pq)
>>> return q->funcs->begin_query(fd_context(pctx), q);
>>> }
>>>
>>> -static void
>>> +static bool
>>> fd_end_query(struct pipe_context *pctx, struct pipe_query *pq)
>>> {
>>> struct fd_query *q = fd_query(pq);
>>> q->funcs->end_query(fd_context(pctx), q);
>>> + return true;
>>> }
>>>
>>> static boolean
>>> diff --git a/src/gallium/drivers/i915/i915_query.c
>>> b/src/gallium/drivers/i915/i915_query.c
>>> index fa1b01d..d6015a6 100644
>>> --- a/src/gallium/drivers/i915/i915_query.c
>>> +++ b/src/gallium/drivers/i915/i915_query.c
>>> @@ -60,8 +60,9 @@ static boolean i915_begin_query(struct pipe_context
>>> *ctx,
>>> return true;
>>> }
>>>
>>> -static void i915_end_query(struct pipe_context *ctx, struct
>>> pipe_query *query)
>>> +static bool i915_end_query(struct pipe_context *ctx, struct
>>> pipe_query *query)
>>> {
>>> + return true;
>>> }
>>>
>>> static boolean i915_get_query_result(struct pipe_context *ctx,
>>> diff --git a/src/gallium/drivers/ilo/ilo_query.c
>>> b/src/gallium/drivers/ilo/ilo_query.c
>>> index 8a42f58..3088c96 100644
>>> --- a/src/gallium/drivers/ilo/ilo_query.c
>>> +++ b/src/gallium/drivers/ilo/ilo_query.c
>>> @@ -128,7 +128,7 @@ ilo_begin_query(struct pipe_context *pipe, struct
>>> pipe_query *query)
>>> return true;
>>> }
>>>
>>> -static void
>>> +static bool
>>> ilo_end_query(struct pipe_context *pipe, struct pipe_query *query)
>>> {
>>> struct ilo_query *q = ilo_query(query);
>>> @@ -136,7 +136,7 @@ ilo_end_query(struct pipe_context *pipe, struct
>>> pipe_query *query)
>>> if (!q->active) {
>>> /* require ilo_begin_query() first */
>>> if (q->in_pairs)
>>> - return;
>>> + return false;
>>>
>>> ilo_begin_query(pipe, query);
>>> }
>>> @@ -144,6 +144,8 @@ ilo_end_query(struct pipe_context *pipe, struct
>>> pipe_query *query)
>>> q->active = false;
>>>
>>> ilo_query_table[q->type].end(ilo_context(pipe), q);
>>> +
>>> + return true;
>>> }
>>>
>>> /**
>>> diff --git a/src/gallium/drivers/llvmpipe/lp_query.c
>>> b/src/gallium/drivers/llvmpipe/lp_query.c
>>> index 2fddc90..d5ed656 100644
>>> --- a/src/gallium/drivers/llvmpipe/lp_query.c
>>> +++ b/src/gallium/drivers/llvmpipe/lp_query.c
>>> @@ -239,7 +239,7 @@ llvmpipe_begin_query(struct pipe_context *pipe,
>>> struct pipe_query *q)
>>> }
>>>
>>>
>>> -static void
>>> +static bool
>>> llvmpipe_end_query(struct pipe_context *pipe, struct pipe_query *q)
>>> {
>>> struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
>>> @@ -298,6 +298,8 @@ llvmpipe_end_query(struct pipe_context *pipe,
>>> struct pipe_query *q)
>>> default:
>>> break;
>>> }
>>> +
>>> + return true;
>>> }
>>>
>>> boolean
>>> diff --git a/src/gallium/drivers/noop/noop_pipe.c
>>> b/src/gallium/drivers/noop/noop_pipe.c
>>> index 55aca74..99e5f1a 100644
>>> --- a/src/gallium/drivers/noop/noop_pipe.c
>>> +++ b/src/gallium/drivers/noop/noop_pipe.c
>>> @@ -63,8 +63,9 @@ static boolean noop_begin_query(struct pipe_context
>>> *ctx, struct pipe_query *que
>>> return true;
>>> }
>>>
>>> -static void noop_end_query(struct pipe_context *ctx, struct
>>> pipe_query *query)
>>> +static bool noop_end_query(struct pipe_context *ctx, struct
>>> pipe_query *query)
>>> {
>>> + return true;
>>> }
>>>
>>> static boolean noop_get_query_result(struct pipe_context *ctx,
>>> diff --git a/src/gallium/drivers/nouveau/nv30/nv30_query.c
>>> b/src/gallium/drivers/nouveau/nv30/nv30_query.c
>>> index cb53a36..aa9a12f 100644
>>> --- a/src/gallium/drivers/nouveau/nv30/nv30_query.c
>>> +++ b/src/gallium/drivers/nouveau/nv30/nv30_query.c
>>> @@ -175,7 +175,7 @@ nv30_query_begin(struct pipe_context *pipe,
>>> struct pipe_query *pq)
>>> return true;
>>> }
>>>
>>> -static void
>>> +static bool
>>> nv30_query_end(struct pipe_context *pipe, struct pipe_query *pq)
>>> {
>>> struct nv30_context *nv30 = nv30_context(pipe);
>>> @@ -194,6 +194,7 @@ nv30_query_end(struct pipe_context *pipe, struct
>>> pipe_query *pq)
>>> PUSH_DATA (push, 0);
>>> }
>>> PUSH_KICK (push);
>>> + return true;
>>> }
>>>
>>> static boolean
>>> diff --git a/src/gallium/drivers/nouveau/nv50/nv50_query.c
>>> b/src/gallium/drivers/nouveau/nv50/nv50_query.c
>>> index fa70fb6..9a1397a 100644
>>> --- a/src/gallium/drivers/nouveau/nv50/nv50_query.c
>>> +++ b/src/gallium/drivers/nouveau/nv50/nv50_query.c
>>> @@ -54,11 +54,12 @@ nv50_begin_query(struct pipe_context *pipe,
>>> struct pipe_query *pq)
>>> return q->funcs->begin_query(nv50_context(pipe), q);
>>> }
>>>
>>> -static void
>>> +static bool
>>> nv50_end_query(struct pipe_context *pipe, struct pipe_query *pq)
>>> {
>>> struct nv50_query *q = nv50_query(pq);
>>> q->funcs->end_query(nv50_context(pipe), q);
>>> + return true;
>>> }
>>>
>>> static boolean
>>> diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_query.c
>>> b/src/gallium/drivers/nouveau/nvc0/nvc0_query.c
>>> index b34271c..91fb72f 100644
>>> --- a/src/gallium/drivers/nouveau/nvc0/nvc0_query.c
>>> +++ b/src/gallium/drivers/nouveau/nvc0/nvc0_query.c
>>> @@ -58,11 +58,12 @@ nvc0_begin_query(struct pipe_context *pipe,
>>> struct pipe_query *pq)
>>> return q->funcs->begin_query(nvc0_context(pipe), q);
>>> }
>>>
>>> -static void
>>> +static bool
>>> nvc0_end_query(struct pipe_context *pipe, struct pipe_query *pq)
>>> {
>>> struct nvc0_query *q = nvc0_query(pq);
>>> q->funcs->end_query(nvc0_context(pipe), q);
>>> + return true;
>>> }
>>>
>>> static boolean
>>> diff --git a/src/gallium/drivers/r300/r300_query.c
>>> b/src/gallium/drivers/r300/r300_query.c
>>> index 7603985..8557eb7 100644
>>> --- a/src/gallium/drivers/r300/r300_query.c
>>> +++ b/src/gallium/drivers/r300/r300_query.c
>>> @@ -110,7 +110,7 @@ void r300_stop_query(struct r300_context *r300)
>>> r300->query_current = NULL;
>>> }
>>>
>>> -static void r300_end_query(struct pipe_context* pipe,
>>> +static bool r300_end_query(struct pipe_context* pipe,
>>> struct pipe_query* query)
>>> {
>>> struct r300_context* r300 = r300_context(pipe);
>>> @@ -120,16 +120,18 @@ static void r300_end_query(struct pipe_context*
>>> pipe,
>>> pb_reference(&q->buf, NULL);
>>> r300_flush(pipe, RADEON_FLUSH_ASYNC,
>>> (struct pipe_fence_handle**)&q->buf);
>>> - return;
>>> + return true;
>>> }
>>>
>>> if (q != r300->query_current) {
>>> fprintf(stderr, "r300: end_query: Got invalid query.\n");
>>> assert(0);
>>> - return;
>>> + return false;
>>> }
>>>
>>> r300_stop_query(r300);
>>> +
>>> + return true;
>>> }
>>>
>>> static boolean r300_get_query_result(struct pipe_context* pipe,
>>> diff --git a/src/gallium/drivers/radeon/r600_query.c
>>> b/src/gallium/drivers/radeon/r600_query.c
>>> index de6e37b..813885b 100644
>>> --- a/src/gallium/drivers/radeon/r600_query.c
>>> +++ b/src/gallium/drivers/radeon/r600_query.c
>>> @@ -725,12 +725,13 @@ boolean r600_query_hw_begin(struct
>>> r600_common_context *rctx,
>>> return true;
>>> }
>>>
>>> -static void r600_end_query(struct pipe_context *ctx, struct
>>> pipe_query *query)
>>> +static bool r600_end_query(struct pipe_context *ctx, struct
>>> pipe_query *query)
>>> {
>>> struct r600_common_context *rctx = (struct r600_common_context
>>> *)ctx;
>>> struct r600_query *rquery = (struct r600_query *)query;
>>>
>>> rquery->ops->end(rctx, rquery);
>>> + return true;
>>> }
>>>
>>> void r600_query_hw_end(struct r600_common_context *rctx,
>>> diff --git a/src/gallium/drivers/rbug/rbug_context.c
>>> b/src/gallium/drivers/rbug/rbug_context.c
>>> index 1280c45..38dee74 100644
>>> --- a/src/gallium/drivers/rbug/rbug_context.c
>>> +++ b/src/gallium/drivers/rbug/rbug_context.c
>>> @@ -178,17 +178,20 @@ rbug_begin_query(struct pipe_context *_pipe,
>>> return ret;
>>> }
>>>
>>> -static void
>>> +static bool
>>> rbug_end_query(struct pipe_context *_pipe,
>>> struct pipe_query *query)
>>> {
>>> struct rbug_context *rb_pipe = rbug_context(_pipe);
>>> struct pipe_context *pipe = rb_pipe->pipe;
>>> + bool ret;
>>>
>>> pipe_mutex_lock(rb_pipe->call_mutex);
>>> - pipe->end_query(pipe,
>>> - query);
>>> + ret = pipe->end_query(pipe,
>>> + query);
>>> pipe_mutex_unlock(rb_pipe->call_mutex);
>>> +
>>> + return ret;
>>> }
>>>
>>> static boolean
>>> diff --git a/src/gallium/drivers/softpipe/sp_query.c
>>> b/src/gallium/drivers/softpipe/sp_query.c
>>> index 81e9710..bec0116 100644
>>> --- a/src/gallium/drivers/softpipe/sp_query.c
>>> +++ b/src/gallium/drivers/softpipe/sp_query.c
>>> @@ -134,7 +134,7 @@ softpipe_begin_query(struct pipe_context *pipe,
>>> struct pipe_query *q)
>>> }
>>>
>>>
>>> -static void
>>> +static bool
>>> softpipe_end_query(struct pipe_context *pipe, struct pipe_query *q)
>>> {
>>> struct softpipe_context *softpipe = softpipe_context( pipe );
>>> @@ -201,6 +201,7 @@ softpipe_end_query(struct pipe_context *pipe,
>>> struct pipe_query *q)
>>> break;
>>> }
>>> softpipe->dirty |= SP_NEW_QUERY;
>>> + return true;
>>> }
>>>
>>>
>>> diff --git a/src/gallium/drivers/svga/svga_pipe_query.c
>>> b/src/gallium/drivers/svga/svga_pipe_query.c
>>> index 75bc9ce..05b756a 100644
>>> --- a/src/gallium/drivers/svga/svga_pipe_query.c
>>> +++ b/src/gallium/drivers/svga/svga_pipe_query.c
>>> @@ -945,7 +945,7 @@ svga_begin_query(struct pipe_context *pipe,
>>> struct pipe_query *q)
>>> }
>>>
>>>
>>> -static void
>>> +static bool
>>> svga_end_query(struct pipe_context *pipe, struct pipe_query *q)
>>> {
>>> struct svga_context *svga = svga_context(pipe);
>>> @@ -1057,6 +1057,7 @@ svga_end_query(struct pipe_context *pipe,
>>> struct pipe_query *q)
>>> assert(!"unexpected query type in svga_end_query()");
>>> }
>>> svga->sq[sq->type] = NULL;
>>> + return true;
>>> }
>>>
>>>
>>> diff --git a/src/gallium/drivers/swr/swr_query.cpp
>>> b/src/gallium/drivers/swr/swr_query.cpp
>>> index e4b8b68..ff4d9b3 100644
>>> --- a/src/gallium/drivers/swr/swr_query.cpp
>>> +++ b/src/gallium/drivers/swr/swr_query.cpp
>>> @@ -281,7 +281,7 @@ swr_begin_query(struct pipe_context *pipe, struct
>>> pipe_query *q)
>>> return true;
>>> }
>>>
>>> -static void
>>> +static bool
>>> swr_end_query(struct pipe_context *pipe, struct pipe_query *q)
>>> {
>>> struct swr_context *ctx = swr_context(pipe);
>>> @@ -295,6 +295,7 @@ swr_end_query(struct pipe_context *pipe, struct
>>> pipe_query *q)
>>> pq->result = &pq->end;
>>> pq->enable_stats = FALSE;
>>> swr_gather_stats(pipe, pq);
>>> + return true;
>>> }
>>>
>>>
>>> diff --git a/src/gallium/drivers/trace/tr_context.c
>>> b/src/gallium/drivers/trace/tr_context.c
>>> index b575f2c..7ed4f49 100644
>>> --- a/src/gallium/drivers/trace/tr_context.c
>>> +++ b/src/gallium/drivers/trace/tr_context.c
>>> @@ -218,12 +218,13 @@ trace_context_begin_query(struct pipe_context
>>> *_pipe,
>>> }
>>>
>>>
>>> -static void
>>> +static bool
>>> trace_context_end_query(struct pipe_context *_pipe,
>>> struct pipe_query *query)
>>> {
>>> struct trace_context *tr_ctx = trace_context(_pipe);
>>> struct pipe_context *pipe = tr_ctx->pipe;
>>> + bool ret;
>>>
>>> query = trace_query_unwrap(query);
>>>
>>> @@ -232,9 +233,10 @@ trace_context_end_query(struct pipe_context *_pipe,
>>> trace_dump_arg(ptr, pipe);
>>> trace_dump_arg(ptr, query);
>>>
>>> - pipe->end_query(pipe, query);
>>> + ret = pipe->end_query(pipe, query);
>>>
>>> trace_dump_call_end();
>>> + return ret;
>>> }
>>>
>>>
>>> diff --git a/src/gallium/drivers/vc4/vc4_query.c
>>> b/src/gallium/drivers/vc4/vc4_query.c
>>> index 17400a3..ddf8f8f 100644
>>> --- a/src/gallium/drivers/vc4/vc4_query.c
>>> +++ b/src/gallium/drivers/vc4/vc4_query.c
>>> @@ -56,9 +56,10 @@ vc4_begin_query(struct pipe_context *ctx, struct
>>> pipe_query *query)
>>> return true;
>>> }
>>>
>>> -static void
>>> +static bool
>>> vc4_end_query(struct pipe_context *ctx, struct pipe_query *query)
>>> {
>>> + return true;
>>> }
>>>
>>> static boolean
>>> diff --git a/src/gallium/drivers/virgl/virgl_query.c
>>> b/src/gallium/drivers/virgl/virgl_query.c
>>> index 5173bd3..4ddb925 100644
>>> --- a/src/gallium/drivers/virgl/virgl_query.c
>>> +++ b/src/gallium/drivers/virgl/virgl_query.c
>>> @@ -107,7 +107,7 @@ static boolean virgl_begin_query(struct
>>> pipe_context *ctx,
>>> return true;
>>> }
>>>
>>> -static void virgl_end_query(struct pipe_context *ctx,
>>> +static bool virgl_end_query(struct pipe_context *ctx,
>>> struct pipe_query *q)
>>> {
>>> struct virgl_context *vctx = virgl_context(ctx);
>>> @@ -121,6 +121,7 @@ static void virgl_end_query(struct pipe_context
>>> *ctx,
>>>
>>>
>>> virgl_encoder_end_query(vctx, query->handle);
>>> + return true;
>>> }
>>>
>>> static boolean virgl_get_query_result(struct pipe_context *ctx,
>>> diff --git a/src/gallium/include/pipe/p_context.h
>>> b/src/gallium/include/pipe/p_context.h
>>> index 82efaf5..9d7a8eb 100644
>>> --- a/src/gallium/include/pipe/p_context.h
>>> +++ b/src/gallium/include/pipe/p_context.h
>>> @@ -140,7 +140,7 @@ struct pipe_context {
>>> struct pipe_query *q);
>>>
>>> boolean (*begin_query)(struct pipe_context *pipe, struct
>>> pipe_query *q);
>>> - void (*end_query)(struct pipe_context *pipe, struct pipe_query *q);
>>> + bool (*end_query)(struct pipe_context *pipe, struct pipe_query *q);
>>>
>>> /**
>>> * Get results of a query.
>>>
>>
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