src/gallium/auxiliary/gallivm/lp_bld_tgsi.h

   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
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  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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  25  *
  26  **************************************************************************/
  27
  28 /**
  29  * @file
  30  * TGSI to LLVM IR translation.
  31  *
  32  * @author Jose Fonseca <jfonseca@vmware.com>
  33  */
  34
  35 #ifndef LP_BLD_TGSI_H
  36 #define LP_BLD_TGSI_H
  37
  38 #include "gallivm/lp_bld.h"
  39
  40
  41 struct tgsi_token;
  42 struct lp_type;
  43 struct lp_build_context;
  44 struct lp_build_mask_context;
  45
  46
  47 /**
  48  * Sampler code generation interface.
  49  *
  50  * Although texture sampling is a requirement for TGSI translation, it is
  51  * a very different problem with several different approaches to it. This
  52  * structure establishes an interface for texture sampling code generation, so
  53  * that we can easily use different texture sampling strategies.
  54  */
  55 struct lp_build_sampler_soa
  56 {
  57    void
  58    (*destroy)( struct lp_build_sampler_soa *sampler );
  59
  60    void
  61    (*emit_fetch_texel)( struct lp_build_sampler_soa *sampler,
  62                         LLVMBuilderRef builder,
  63                         struct lp_type type,
  64                         unsigned unit,
  65                         unsigned num_coords,
  66                         const LLVMValueRef *coords,
  67                         LLVMValueRef lodbias,
  68                         LLVMValueRef *texel);
  69 };
  70
  71
  72 void
  73 lp_build_tgsi_soa(LLVMBuilderRef builder,
  74                   const struct tgsi_token *tokens,
  75                   struct lp_type type,
  76                   struct lp_build_mask_context *mask,
  77                   LLVMValueRef consts_ptr,
  78                   const LLVMValueRef *pos,
  79                   const LLVMValueRef (*inputs)[4],
  80                   LLVMValueRef (*outputs)[4],
  81                   struct lp_build_sampler_soa *sampler);
  82
  83
  84 #endif /* LP_BLD_TGSI_H */