1  struct texture_stage_op
       2  {
       3      unsigned int carg1, carg2, carg0;
       4      unsigned int aarg1, aarg2, aarg0;
       5      unsigned int dst;
       6  };
       7  
       8  static const char *debug_register(unsigned int reg) {
       9      switch(reg) {
      10          case 0x8921: return "GL_REG_0_ATI";
      11          case 0x8923: return "GL_REG_2_ATI";
      12          case 0x0: return "GL_ZERO";
      13          case 0x1: return "GL_ONE";
      14          default: return "Unknown register\n";
      15      }
      16  }
      17  
      18  static unsigned int find_tmpreg(struct texture_stage_op op[8]) {
      19      int i;
      20      int tex_used[8];
      21  
      22      for(i = 0; i < 8; i++) {
      23          if(op[i].carg1 == 0x00000002 ) {
      24              tex_used[i] = 1;
      25          }
      26      }
      27  
      28      for(i = 1; i < 6; i++) {
      29          if(!tex_used[i]) {
      30                  return 0x8921 + i;
      31          }
      32      }
      33      return 0;
      34  }
      35  
      36  extern f(const char*);
      37  
      38  void g() {
      39      struct texture_stage_op op[8];
      40      unsigned int tmparg = find_tmpreg(op);
      41      unsigned int dstreg;
      42  
      43      if(tmparg == 0x0) return;
      44      dstreg = tmparg;
      45      f(debug_register(dstreg));
      46      return;
      47  }