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llvmpipe: Utility function to double the bit width of a type.

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This commit is contained in:
José Fonseca 2009-10-22 18:28:37 +01:00
parent 421507de06
commit 4458695bda
2 changed files with 28 additions and 5 deletions
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29
src/gallium/drivers/llvmpipe/lp_bld_type.c
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@ -160,12 +160,31 @@ lp_build_int_vec_type(struct lp_type type)
struct lp_type
lp_int_type(struct lp_type type)
{
struct lp_type int_type;
struct lp_type res_type;
memset(&int_type, 0, sizeof int_type);
int_type.width = type.width;
int_type.length = type.length;
return int_type;
memset(&res_type, 0, sizeof res_type);
res_type.width = type.width;
res_type.length = type.length;
return res_type;
}
/**
* Return the type with twice the bit width (hence half the number of elements).
*/
struct lp_type
lp_wider_type(struct lp_type type)
{
struct lp_type res_type;
memcpy(&res_type, &type, sizeof res_type);
res_type.width *= 2;
res_type.length /= 2;
assert(res_type.length);
return res_type;
}

4
src/gallium/drivers/llvmpipe/lp_bld_type.h
View file

@ -166,6 +166,10 @@ struct lp_type
lp_int_type(struct lp_type type);
struct lp_type
lp_wider_type(struct lp_type type);
void
lp_build_context_init(struct lp_build_context *bld,
LLVMBuilderRef builder,