src/gallium/auxiliary/gallivm/lp_bld_tgsi.h

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 *
 * Copyright 2009 VMware, Inc.
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/**
 * @file
 * TGSI to LLVM IR translation.
 *
 * @author Jose Fonseca <jfonseca@vmware.com>
 */

#ifndef LP_BLD_TGSI_H
#define LP_BLD_TGSI_H

#include <llvm-c/Core.h>


struct tgsi_token;
struct lp_type;
struct lp_build_context;
struct lp_build_mask_context;


/**
 * Sampler code generation interface.
 *
 * Although texture sampling is a requirement for TGSI translation, it is
 * a very different problem with several different approaches to it. This
 * structure establishes an interface for texture sampling code generation, so
 * that we can easily use different texture sampling strategies.
 */
struct lp_build_sampler_soa
{
   void
   (*destroy)( struct lp_build_sampler_soa *sampler );

   void
   (*emit_fetch_texel)( struct lp_build_sampler_soa *sampler,
                        LLVMBuilderRef builder,
                        struct lp_type type,
                        unsigned unit,
                        unsigned num_coords,
                        const LLVMValueRef *coords,
                        LLVMValueRef lodbias,
                        LLVMValueRef *texel);
};


void
lp_build_tgsi_soa(LLVMBuilderRef builder,
                  const struct tgsi_token *tokens,
                  struct lp_type type,
                  struct lp_build_mask_context *mask,
                  LLVMValueRef consts_ptr,
                  const LLVMValueRef *pos,
                  const LLVMValueRef (*inputs)[4],
                  LLVMValueRef (*outputs)[4],
                  struct lp_build_sampler_soa *sampler);


#endif /* LP_BLD_TGSI_H */