src/gallium/auxiliary/tgsi/tgsi_parse.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 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_PARSE_H
  29 #define TGSI_PARSE_H
  30
  31 #include "pipe/p_compiler.h"
  32 #include "pipe/p_shader_tokens.h"
  33
  34 #if defined __cplusplus
  35 extern "C" {
  36 #endif
  37
  38 struct tgsi_full_header
  39 {
  40    struct tgsi_header      Header;
  41    struct tgsi_processor   Processor;
  42 };
  43
  44 struct tgsi_full_dst_register
  45 {
  46    struct tgsi_dst_register               Register;
  47    struct tgsi_src_register               Indirect;
  48    struct tgsi_dimension                  Dimension;
  49    struct tgsi_src_register               DimIndirect;
  50 };
  51
  52 struct tgsi_full_src_register
  53 {
  54    struct tgsi_src_register         Register;
  55    struct tgsi_src_register         Indirect;
  56    struct tgsi_dimension            Dimension;
  57    struct tgsi_src_register         DimIndirect;
  58 };
  59
  60 struct tgsi_full_declaration
  61 {
  62    struct tgsi_declaration Declaration;
  63    struct tgsi_declaration_range Range;
  64    struct tgsi_declaration_dimension Dim;
  65    struct tgsi_declaration_interp Interp;
  66    struct tgsi_declaration_semantic Semantic;
  67    struct tgsi_declaration_resource Resource;
  68    struct tgsi_declaration_sampler_view SamplerView;
  69 };
  70
  71 struct tgsi_full_immediate
  72 {
  73    struct tgsi_immediate   Immediate;
  74    union tgsi_immediate_data u[4];
  75 };
  76
  77 struct tgsi_full_property
  78 {
  79    struct tgsi_property   Property;
  80    struct tgsi_property_data u[8];
  81 };
  82
  83 #define TGSI_FULL_MAX_DST_REGISTERS 2
  84 #define TGSI_FULL_MAX_SRC_REGISTERS 5 /* SAMPLE_D has 5 */
  85 #define TGSI_FULL_MAX_TEX_OFFSETS 4
  86
  87 struct tgsi_full_instruction
  88 {
  89    struct tgsi_instruction             Instruction;
  90    struct tgsi_instruction_predicate   Predicate;
  91    struct tgsi_instruction_label       Label;
  92    struct tgsi_instruction_texture     Texture;
  93    struct tgsi_full_dst_register       Dst[TGSI_FULL_MAX_DST_REGISTERS];
  94    struct tgsi_full_src_register       Src[TGSI_FULL_MAX_SRC_REGISTERS];
  95    struct tgsi_texture_offset          TexOffsets[TGSI_FULL_MAX_TEX_OFFSETS];
  96 };
  97
  98 union tgsi_full_token
  99 {
 100    struct tgsi_token             Token;
 101    struct tgsi_full_declaration  FullDeclaration;
 102    struct tgsi_full_immediate    FullImmediate;
 103    struct tgsi_full_instruction  FullInstruction;
 104    struct tgsi_full_property     FullProperty;
 105 };
 106
 107 struct tgsi_parse_context
 108 {
 109    const struct tgsi_token    *Tokens;
 110    unsigned                   Position;
 111    struct tgsi_full_header    FullHeader;
 112    union tgsi_full_token      FullToken;
 113 };
 114
 115 #define TGSI_PARSE_OK      0
 116 #define TGSI_PARSE_ERROR   1
 117
 118 unsigned
 119 tgsi_parse_init(
 120    struct tgsi_parse_context *ctx,
 121    const struct tgsi_token *tokens );
 122
 123 void
 124 tgsi_parse_free(
 125    struct tgsi_parse_context *ctx );
 126
 127 boolean
 128 tgsi_parse_end_of_tokens(
 129    struct tgsi_parse_context *ctx );
 130
 131 void
 132 tgsi_parse_token(
 133    struct tgsi_parse_context *ctx );
 134
 135 static INLINE unsigned
 136 tgsi_num_tokens(const struct tgsi_token *tokens)
 137 {
 138    struct tgsi_header header;
 139    memcpy(&header, tokens, sizeof(header));
 140    return header.HeaderSize + header.BodySize;
 141 }
 142
 143 void
 144 tgsi_dump_tokens(const struct tgsi_token *tokens);
 145
 146 struct tgsi_token *
 147 tgsi_dup_tokens(const struct tgsi_token *tokens);
 148
 149 struct tgsi_token *
 150 tgsi_alloc_tokens(unsigned num_tokens);
 151
 152
 153 #if defined __cplusplus
 154 }
 155 #endif
 156
 157 #endif /* TGSI_PARSE_H */
 158