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_modulate  DstRegisterExtModulate;
  53 };
  54
  55 struct tgsi_full_src_register
  56 {
  57    struct tgsi_src_register         SrcRegister;
  58    struct tgsi_src_register_ext_mod SrcRegisterExtMod;
  59    struct tgsi_src_register         SrcRegisterInd;
  60    struct tgsi_dimension            SrcRegisterDim;
  61    struct tgsi_src_register         SrcRegisterDimInd;
  62 };
  63
  64 struct tgsi_full_declaration
  65 {
  66    struct tgsi_declaration Declaration;
  67    struct tgsi_declaration_range DeclarationRange;
  68    struct tgsi_declaration_semantic Semantic;
  69 };
  70
  71 struct tgsi_full_immediate
  72 {
  73    struct tgsi_immediate   Immediate;
  74    union tgsi_immediate_data u[4];
  75 };
  76
  77 #define TGSI_FULL_MAX_DST_REGISTERS 2
  78 #define TGSI_FULL_MAX_SRC_REGISTERS 4 /* TXD has 4 */
  79
  80 struct tgsi_full_instruction
  81 {
  82    struct tgsi_instruction             Instruction;
  83    struct tgsi_instruction_ext_label   InstructionExtLabel;
  84    struct tgsi_instruction_ext_texture InstructionExtTexture;
  85    struct tgsi_instruction_ext_predicate InstructionExtPredicate;
  86    struct tgsi_full_dst_register       FullDstRegisters[TGSI_FULL_MAX_DST_REGISTERS];
  87    struct tgsi_full_src_register       FullSrcRegisters[TGSI_FULL_MAX_SRC_REGISTERS];
  88    uint Flags;  /**< user-defined usage */
  89 };
  90
  91 union tgsi_full_token
  92 {
  93    struct tgsi_token             Token;
  94    struct tgsi_full_declaration  FullDeclaration;
  95    struct tgsi_full_immediate    FullImmediate;
  96    struct tgsi_full_instruction  FullInstruction;
  97 };
  98
  99 void
 100 tgsi_full_token_init(
 101    union tgsi_full_token *full_token );
 102
 103 void
 104 tgsi_full_token_free(
 105    union tgsi_full_token *full_token );
 106
 107 struct tgsi_parse_context
 108 {
 109    const struct tgsi_token    *Tokens;
 110    unsigned                   Position;
 111    struct tgsi_full_version   FullVersion;
 112    struct tgsi_full_header    FullHeader;
 113    union tgsi_full_token      FullToken;
 114 };
 115
 116 #define TGSI_PARSE_OK      0
 117 #define TGSI_PARSE_ERROR   1
 118
 119 unsigned
 120 tgsi_parse_init(
 121    struct tgsi_parse_context *ctx,
 122    const struct tgsi_token *tokens );
 123
 124 void
 125 tgsi_parse_free(
 126    struct tgsi_parse_context *ctx );
 127
 128 boolean
 129 tgsi_parse_end_of_tokens(
 130    struct tgsi_parse_context *ctx );
 131
 132 void
 133 tgsi_parse_token(
 134    struct tgsi_parse_context *ctx );
 135
 136 unsigned
 137 tgsi_num_tokens(const struct tgsi_token *tokens);
 138
 139 struct tgsi_token *
 140 tgsi_dup_tokens(const struct tgsi_token *tokens);
 141
 142 #if defined __cplusplus
 143 }
 144 #endif
 145
 146 #endif /* TGSI_PARSE_H */
 147