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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
  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 TUNGSTEN GRAPHICS 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. #ifndef TGSI_TRANSFORM_H
  29. #define TGSI_TRANSFORM_H
  30.  
  31.  
  32. #include "pipe/p_shader_tokens.h"
  33. #include "tgsi/tgsi_parse.h"
  34. #include "tgsi/tgsi_build.h"
  35.  
  36.  
  37.  
  38. /**
  39.  * Subclass this to add caller-specific data
  40.  */
  41. struct tgsi_transform_context
  42. {
  43. /**** PUBLIC ***/
  44.  
  45.    /**
  46.     * User-defined callbacks invoked per instruction.
  47.     */
  48.    void (*transform_instruction)(struct tgsi_transform_context *ctx,
  49.                                  struct tgsi_full_instruction *inst);
  50.  
  51.    void (*transform_declaration)(struct tgsi_transform_context *ctx,
  52.                                  struct tgsi_full_declaration *decl);
  53.  
  54.    void (*transform_immediate)(struct tgsi_transform_context *ctx,
  55.                                struct tgsi_full_immediate *imm);
  56.    void (*transform_property)(struct tgsi_transform_context *ctx,
  57.                               struct tgsi_full_property *prop);
  58.  
  59.    /**
  60.     * Called at end of input program to allow caller to append extra
  61.     * instructions.  Return number of tokens emitted.
  62.     */
  63.    void (*epilog)(struct tgsi_transform_context *ctx);
  64.  
  65.  
  66. /*** PRIVATE ***/
  67.  
  68.    /**
  69.     * These are setup by tgsi_transform_shader() and cannot be overridden.
  70.     * Meant to be called from in the above user callback functions.
  71.     */
  72.    void (*emit_instruction)(struct tgsi_transform_context *ctx,
  73.                             const struct tgsi_full_instruction *inst);
  74.    void (*emit_declaration)(struct tgsi_transform_context *ctx,
  75.                             const struct tgsi_full_declaration *decl);
  76.    void (*emit_immediate)(struct tgsi_transform_context *ctx,
  77.                           const struct tgsi_full_immediate *imm);
  78.    void (*emit_property)(struct tgsi_transform_context *ctx,
  79.                          const struct tgsi_full_property *prop);
  80.  
  81.    struct tgsi_header *header;
  82.    uint max_tokens_out;
  83.    struct tgsi_token *tokens_out;
  84.    uint ti;
  85. };
  86.  
  87.  
  88.  
  89. extern int
  90. tgsi_transform_shader(const struct tgsi_token *tokens_in,
  91.                       struct tgsi_token *tokens_out,
  92.                       uint max_tokens_out,
  93.                       struct tgsi_transform_context *ctx);
  94.  
  95.  
  96. #endif /* TGSI_TRANSFORM_H */
  97.