workbench/libs/mesa/src/gallium/auxiliary/tgsi/tgsi_transform.h

   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
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  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 */