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 */
41struct 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
89extern int
90tgsi_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