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_shader_tokens.h"
  32
  33 #if defined __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 struct tgsi_full_version
  38 {
  39    struct tgsi_version  Version;
  40 };
  41
  42 struct tgsi_full_header
  43 {
  44    struct tgsi_header      Header;
  45    struct tgsi_processor   Processor;
  46 };
  47
  48 struct tgsi_full_dst_register
  49 {
  50    struct tgsi_dst_register               DstRegister;
  51    struct tgsi_src_register               DstRegisterInd;
  52    struct tgsi_dst_register_ext_concode   DstRegisterExtConcode;
  53    struct tgsi_dst_register_ext_modulate  DstRegisterExtModulate;
  54 };
  55
  56 struct tgsi_full_src_register
  57 {
  58    struct tgsi_src_register         SrcRegister;
  59    struct tgsi_src_register_ext_swz SrcRegisterExtSwz;
  60    struct tgsi_src_register_ext_mod SrcRegisterExtMod;
  61    struct tgsi_src_register         SrcRegisterInd;
  62    struct tgsi_dimension            SrcRegisterDim;
  63    struct tgsi_src_register         SrcRegisterDimInd;
  64 };
  65
  66 struct tgsi_full_declaration
  67 {
  68    struct tgsi_declaration Declaration;
  69    struct tgsi_declaration_range DeclarationRange;
  70    struct tgsi_declaration_semantic Semantic;
  71 };
  72
  73 struct tgsi_full_immediate
  74 {
  75    struct tgsi_immediate   Immediate;
  76    union tgsi_immediate_data u[4];
  77 };
  78
  79 #define TGSI_FULL_MAX_DST_REGISTERS 2
  80 #define TGSI_FULL_MAX_SRC_REGISTERS 4 /* TXD has 4 */
  81
  82 struct tgsi_full_instruction
  83 {
  84    struct tgsi_instruction             Instruction;
  85    struct tgsi_instruction_ext_nv      InstructionExtNv;
  86    struct tgsi_instruction_ext_label   InstructionExtLabel;
  87    struct tgsi_instruction_ext_texture InstructionExtTexture;
  88    struct tgsi_full_dst_register       FullDstRegisters[TGSI_FULL_MAX_DST_REGISTERS];
  89    struct tgsi_full_src_register       FullSrcRegisters[TGSI_FULL_MAX_SRC_REGISTERS];
  90    uint Flags;  /**< user-defined usage */
  91 };
  92
  93 union tgsi_full_token
  94 {
  95    struct tgsi_token             Token;
  96    struct tgsi_full_declaration  FullDeclaration;
  97    struct tgsi_full_immediate    FullImmediate;
  98    struct tgsi_full_instruction  FullInstruction;
  99 };
 100
 101 void
 102 tgsi_full_token_init(
 103    union tgsi_full_token *full_token );
 104
 105 void
 106 tgsi_full_token_free(
 107    union tgsi_full_token *full_token );
 108
 109 struct tgsi_parse_context
 110 {
 111    const struct tgsi_token    *Tokens;
 112    unsigned                   Position;
 113    struct tgsi_full_version   FullVersion;
 114    struct tgsi_full_header    FullHeader;
 115    union tgsi_full_token      FullToken;
 116 };
 117
 118 #define TGSI_PARSE_OK      0
 119 #define TGSI_PARSE_ERROR   1
 120
 121 unsigned
 122 tgsi_parse_init(
 123    struct tgsi_parse_context *ctx,
 124    const struct tgsi_token *tokens );
 125
 126 void
 127 tgsi_parse_free(
 128    struct tgsi_parse_context *ctx );
 129
 130 boolean
 131 tgsi_parse_end_of_tokens(
 132    struct tgsi_parse_context *ctx );
 133
 134 void
 135 tgsi_parse_token(
 136    struct tgsi_parse_context *ctx );
 137
 138 unsigned
 139 tgsi_num_tokens(const struct tgsi_token *tokens);
 140
 141 struct tgsi_token *
 142 tgsi_dup_tokens(const struct tgsi_token *tokens);
 143
 144 #if defined __cplusplus
 145 }
 146 #endif
 147
 148 #endif /* TGSI_PARSE_H */
 149