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      1 /**************************************************************************
      2  *
      3  * Copyright 2009 VMware, Inc.
      4  * All Rights Reserved.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the
      8  * "Software"), to deal in the Software without restriction, including
      9  * without limitation the rights to use, copy, modify, merge, publish,
     10  * distribute, sub license, and/or sell copies of the Software, and to
     11  * permit persons to whom the Software is furnished to do so, subject to
     12  * the following conditions:
     13  *
     14  * The above copyright notice and this permission notice (including the
     15  * next paragraph) shall be included in all copies or substantial portions
     16  * of the Software.
     17  *
     18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
     21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
     22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
     23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
     24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     25  *
     26  **************************************************************************/
     27 
     28 /**
     29  * @file
     30  * Helper functions for type conversions.
     31  *
     32  * @author Jose Fonseca <jfonseca (at) vmware.com>
     33  */
     34 
     35 
     36 #ifndef LP_BLD_CONV_H
     37 #define LP_BLD_CONV_H
     38 
     39 
     40 #include "gallivm/lp_bld.h"
     41 
     42 
     43 struct lp_type;
     44 
     45 LLVMValueRef
     46 lp_build_half_to_float(struct gallivm_state *gallivm,
     47                        LLVMValueRef src);
     48 
     49 LLVMValueRef
     50 lp_build_float_to_half(struct gallivm_state *gallivm,
     51                        LLVMValueRef src);
     52 
     53 LLVMValueRef
     54 lp_build_clamped_float_to_unsigned_norm(struct gallivm_state *gallivm,
     55                                         struct lp_type src_type,
     56                                         unsigned dst_width,
     57                                         LLVMValueRef src);
     58 
     59 LLVMValueRef
     60 lp_build_unsigned_norm_to_float(struct gallivm_state *gallivm,
     61                                 unsigned src_width,
     62                                 struct lp_type dst_type,
     63                                 LLVMValueRef src);
     64 
     65 
     66 void
     67 lp_build_conv(struct gallivm_state *gallivm,
     68               struct lp_type src_type,
     69               struct lp_type dst_type,
     70               const LLVMValueRef *srcs, unsigned num_srcs,
     71               LLVMValueRef *dsts, unsigned num_dsts);
     72 
     73 
     74 int
     75 lp_build_conv_auto(struct gallivm_state *gallivm,
     76                    struct lp_type src_type,
     77                    struct lp_type* dst_type,
     78                    const LLVMValueRef *src,
     79                    unsigned num_srcs,
     80                    LLVMValueRef *dst);
     81 
     82 
     83 void
     84 lp_build_conv_mask(struct gallivm_state *gallivm,
     85                    struct lp_type src_type,
     86                    struct lp_type dst_type,
     87                    const LLVMValueRef *src, unsigned num_srcs,
     88                    LLVMValueRef *dst, unsigned num_dsts);
     89 
     90 #endif /* !LP_BLD_CONV_H */
     91