From 4458695bdafb13eba639d986e2f20953f0f7445c Mon Sep 17 00:00:00 2001 From: José Fonseca Date: Thu, 22 Oct 2009 18:28:37 +0100 Subject: llvmpipe: Utility function to double the bit width of a type. --- src/gallium/drivers/llvmpipe/lp_bld_type.c | 29 ++++++++++++++++++++++++----- src/gallium/drivers/llvmpipe/lp_bld_type.h | 4 ++++ 2 files changed, 28 insertions(+), 5 deletions(-) (limited to 'src/gallium/drivers') diff --git a/src/gallium/drivers/llvmpipe/lp_bld_type.c b/src/gallium/drivers/llvmpipe/lp_bld_type.c index 606243d6c5..1320a26721 100644 --- a/src/gallium/drivers/llvmpipe/lp_bld_type.c +++ b/src/gallium/drivers/llvmpipe/lp_bld_type.c @@ -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; } diff --git a/src/gallium/drivers/llvmpipe/lp_bld_type.h b/src/gallium/drivers/llvmpipe/lp_bld_type.h index ee5ca3483c..46c298fa20 100644 --- a/src/gallium/drivers/llvmpipe/lp_bld_type.h +++ b/src/gallium/drivers/llvmpipe/lp_bld_type.h @@ -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, -- cgit v1.2.3