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/**************************************************************************
*
* Copyright 2009 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/**
* @file
* Helper functions for swizzling/shuffling.
*
* @author Jose Fonseca <jfonseca@vmware.com>
*/
#ifndef LP_BLD_SWIZZLE_H
#define LP_BLD_SWIZZLE_H
#include "gallivm/lp_bld.h"
struct lp_type;
struct lp_build_context;
#define LP_BLD_SWIZZLE_DONTCARE 0xFF
LLVMValueRef
lp_build_broadcast(struct gallivm_state *gallivm,
LLVMTypeRef vec_type,
LLVMValueRef scalar);
LLVMValueRef
lp_build_broadcast_scalar(struct lp_build_context *bld,
LLVMValueRef scalar);
LLVMValueRef
lp_build_extract_broadcast(struct gallivm_state *gallivm,
struct lp_type src_type,
struct lp_type dst_type,
LLVMValueRef vector,
LLVMValueRef index);
/**
* Broadcast one channel of a vector composed of arrays of XYZW structures into
* all four channel.
*/
LLVMValueRef
lp_build_swizzle_scalar_aos(struct lp_build_context *bld,
LLVMValueRef a,
unsigned channel);
/**
* Swizzle a vector consisting of an array of XYZW structs.
*
* @param swizzles is the in [0,4[ range.
*/
LLVMValueRef
lp_build_swizzle_aos(struct lp_build_context *bld,
LLVMValueRef a,
const unsigned char swizzles[4]);
LLVMValueRef
lp_build_swizzle_soa_channel(struct lp_build_context *bld,
const LLVMValueRef *unswizzled,
unsigned swizzle);
void
lp_build_swizzle_soa(struct lp_build_context *bld,
const LLVMValueRef *unswizzled,
const unsigned char swizzles[4],
LLVMValueRef *swizzled);
void
lp_build_swizzle_soa_inplace(struct lp_build_context *bld,
LLVMValueRef *values,
const unsigned char swizzles[4]);
void
lp_build_transpose_aos(struct gallivm_state *gallivm,
struct lp_type type,
const LLVMValueRef src[4],
LLVMValueRef dst[4]);
LLVMValueRef
lp_build_pack_aos_scalars(struct gallivm_state *gallivm,
struct lp_type src_type,
struct lp_type dst_type,
const LLVMValueRef src);
LLVMValueRef
lp_build_unpack_broadcast_aos_scalars(struct gallivm_state *gallivm,
struct lp_type src_type,
struct lp_type dst_type,
const LLVMValueRef src);
#endif /* !LP_BLD_SWIZZLE_H */
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