[Mesa-dev] [PATCH 05/13] nir: expose 'C' wrappers for std430 size/alignment

[Karol Herbst]

it isn't yet. But you would use it in your driver when calculating
your memory offsets for kernel arguments. In OpenCL things are aligned
in memory by the size of the type and we would use those functions to
calculate those.

On Wed, Feb 28, 2018 at 10:39 PM, Jason Ekstrand <jason at jlekstrand.net> wrote:
> Looking through commit titles, I don't see any obvious place where this
> would get used.
>
> On Wed, Feb 28, 2018 at 11:51 AM, Rob Clark <robdclark at gmail.com> wrote:
>>
>> Signed-off-by: Rob Clark <robdclark at gmail.com>
>> ---
>>  src/compiler/nir_types.cpp | 12 ++++++++++++
>>  src/compiler/nir_types.h   |  4 ++++
>>  2 files changed, 16 insertions(+)
>>
>> diff --git a/src/compiler/nir_types.cpp b/src/compiler/nir_types.cpp
>> index cbdd452dc81..0085a19248a 100644
>> --- a/src/compiler/nir_types.cpp
>> +++ b/src/compiler/nir_types.cpp
>> @@ -117,6 +117,18 @@ glsl_get_aoa_size(const struct glsl_type *type)
>>     return type->arrays_of_arrays_size();
>>  }
>>
>> +unsigned
>> +glsl_std430_size(const struct glsl_type *type, bool row_major)
>> +{
>> +   return type->std430_size(row_major);
>> +}
>> +
>> +unsigned
>> +glsl_std430_base_alignment(const struct glsl_type *type, bool row_major)
>> +{
>> +   return type->std430_base_alignment(row_major);
>> +}
>> +
>>  unsigned
>>  glsl_count_attribute_slots(const struct glsl_type *type,
>>                             bool is_vertex_input)
>> diff --git a/src/compiler/nir_types.h b/src/compiler/nir_types.h
>> index e2dfd1ef5b7..5b5e09d137f 100644
>> --- a/src/compiler/nir_types.h
>> +++ b/src/compiler/nir_types.h
>> @@ -71,6 +71,10 @@ unsigned glsl_get_length(const struct glsl_type *type);
>>
>>  unsigned glsl_get_aoa_size(const struct glsl_type *type);
>>
>> +unsigned glsl_std430_size(const struct glsl_type *type, bool row_major);
>> +
>> +unsigned glsl_std430_base_alignment(const struct glsl_type *type, bool
>> row_major);
>> +
>>  unsigned glsl_count_attribute_slots(const struct glsl_type *type,
>>                                      bool is_vertex_input);
>>
>> --
>> 2.14.3
>>
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>
>