[Mesa-dev] [PATCH] gallium: add geometry shader output limits

[Grigori Goronzy]

On 06.02.2014 02:46, Michel Dänzer wrote:
>> +	case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
>> +		return 16384;
>
> radeonsi currently can't handle more than 4095 total output components,
> as the buffer resource for writing to the GSVS ring only has 14 bits for
> the stride in bytes. This limit could be lifted in the future by falling
> back to the pre-SI (supposedly slower) organization of the GSVS buffer
> for larger numbers of total output components.
>

OK. It probably was a bit naive to assume the limits are similar to r600g.

>
> Also, might it make more sense for these to be shader caps than screen
> caps?
>

shader caps are for capabilities not specific to a single shader stage.

Grigori