[Mesa-dev] [PATCH] st/mesa: skip draw calls with pipe_draw_info::count == 0

[Dieter Nützel]

Hello Marek,

go ahead.

This is:
Tested-by: Alexandre Demers <alexandre.f.demers at gmail.com>
Tested-by: Dieter Nützel <Dieter at nuetzel-hh.de>

Solve:
https://bugs.freedesktop.org/show_bug.cgi?id=102502

Dieter

Am 07.09.2017 00:37, schrieb Marek Olšák:
> Ping.
> 
> On Sat, Sep 2, 2017 at 1:34 AM, Marek Olšák <maraeo at gmail.com> wrote:
>> From: Marek Olšák <marek.olsak at amd.com>
>> 
>> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102502
>> 
>> Cc: 17.2 <mesa-stable at lists.freedesktop.org>
>> ---
>>  src/mesa/state_tracker/st_draw.c | 7 ++++++-
>>  1 file changed, 6 insertions(+), 1 deletion(-)
>> 
>> diff --git a/src/mesa/state_tracker/st_draw.c 
>> b/src/mesa/state_tracker/st_draw.c
>> index fe03a4a..2fe7070 100644
>> --- a/src/mesa/state_tracker/st_draw.c
>> +++ b/src/mesa/state_tracker/st_draw.c
>> @@ -191,23 +191,28 @@ st_draw_vbo(struct gl_context *ctx,
>>        if (tfb_vertcount) {
>>           if (!st_transform_feedback_draw_init(tfb_vertcount, stream, 
>> &info))
>>              return;
>>        }
>>     }
>> 
>>     assert(!indirect);
>> 
>>     /* do actual drawing */
>>     for (i = 0; i < nr_prims; i++) {
>> +      info.count = prims[i].count;
>> +
>> +      /* Skip no-op draw calls. */
>> +      if (!info.count && !tfb_vertcount)
>> +         continue;
>> +
>>        info.mode = translate_prim(ctx, prims[i].mode);
>>        info.start = start + prims[i].start;
>> -      info.count = prims[i].count;
>>        info.start_instance = prims[i].base_instance;
>>        info.instance_count = prims[i].num_instances;
>>        info.index_bias = prims[i].basevertex;
>>        info.drawid = prims[i].draw_id;
>>        if (!ib) {
>>           info.min_index = info.start;
>>           info.max_index = info.start + info.count - 1;
>>        }
>> 
>>        if (ST_DEBUG & DEBUG_DRAW) {
>> --
>> 2.7.4
>> 
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