brw_shader_info.c

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#include "brw_context.h"
#include "brw_state.h"
#include "util/u_memory.h"
#include "pipe/p_shader_tokens.h"
#include "tgsi/tgsi_parse.h"


void brw_shader_info(const struct tgsi_token *tokens,
                     struct brw_shader_info *info )
{
   struct tgsi_parse_context parse;
   int done = 0;

   tgsi_parse_init( &parse, tokens );

   while( !done &&
          !tgsi_parse_end_of_tokens( &parse ) ) 
   {
      tgsi_parse_token( &parse );

      switch( parse.FullToken.Token.Type ) {
      case TGSI_TOKEN_TYPE_DECLARATION:
      {
         const struct tgsi_full_declaration *decl = &parse.FullToken.FullDeclaration;
         unsigned last = decl->DeclarationRange.Last;
      
         // Broken by crazy wpos init:
         //assert( info->nr_regs[decl->Declaration.File] <= last);

         info->nr_regs[decl->Declaration.File] = MAX2(info->nr_regs[decl->Declaration.File],
                                                      last+1);
         break;
      }
      case TGSI_TOKEN_TYPE_IMMEDIATE:
      case TGSI_TOKEN_TYPE_INSTRUCTION:
      default:
         done = 1;
         break;
      }
   }

   tgsi_parse_free (&parse);
   
}

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