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st: add st_glsl_type_dword_size() helper

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This will be used to support uniform packing.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Timothy Arceri 2018-03-13 12:34:50 +11:00
parent 5488166730
commit a80cf442d9
2 changed files with 44 additions and 0 deletions
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43
src/mesa/state_tracker/st_glsl_types.cpp
View file

@ -108,3 +108,46 @@ st_glsl_storage_type_size(const struct glsl_type *type, bool is_bindless)
}
return 0;
}
int
st_glsl_type_dword_size(const struct glsl_type *type)
{
unsigned int size, i;
switch (type->base_type) {
case GLSL_TYPE_UINT:
case GLSL_TYPE_INT:
case GLSL_TYPE_FLOAT:
case GLSL_TYPE_BOOL:
return type->components();
case GLSL_TYPE_UINT16:
case GLSL_TYPE_INT16:
case GLSL_TYPE_FLOAT16:
return DIV_ROUND_UP(type->components(), 2);
case GLSL_TYPE_DOUBLE:
case GLSL_TYPE_UINT64:
case GLSL_TYPE_INT64:
return type->components() * 2;
case GLSL_TYPE_ARRAY:
return st_glsl_type_dword_size(type->fields.array) * type->length;
case GLSL_TYPE_STRUCT:
size = 0;
for (i = 0; i < type->length; i++) {
size += st_glsl_type_dword_size(type->fields.structure[i].type);
}
return size;
case GLSL_TYPE_IMAGE:
case GLSL_TYPE_SAMPLER:
case GLSL_TYPE_ATOMIC_UINT:
return 0;
case GLSL_TYPE_SUBROUTINE:
return 1;
case GLSL_TYPE_VOID:
case GLSL_TYPE_ERROR:
case GLSL_TYPE_INTERFACE:
case GLSL_TYPE_FUNCTION:
unreachable("not reached");
}
return 0;
}

1
src/mesa/state_tracker/st_glsl_types.h
View file

@ -36,6 +36,7 @@ extern "C" {
int st_glsl_storage_type_size(const struct glsl_type *type,
bool is_bindless);
int st_glsl_type_dword_size(const struct glsl_type *type);
#ifdef __cplusplus
}