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Oct. 22nd, 2009|11:40 pm |
Incanti. A tu paskaties, kā tas nokompilējas asemblerā - droši vien tām videokartēm priekš lūpošanās ir specifiski reģistri un instrukcijas, kam varētu būt savi ierobežojumi. Atradu gūglē: "LOOP/ENDLOOP and REP/ENDREP blocks involve a loop counter that indicates the number of times the instructions between the LOOP/REP and ENDLOOP/ENDREP are executed. Looping blocks have a number of significant imitations. First, the loop counter can not be computed at run time; it must be specified as a program parameter. Second, the number of loop iterations is limited to the value MAX_PROGRAM_LOOP_COUNT_NV, which must be at least 255. Third, only a limited amount of nesting is supported -- a fragment program will fail to load if a LOOP or REP instruction is nested inside MAX_PROGRAM_LOOP_DEPTH_NV or more LOOP/ENDLOOP or REP/ENDREP blocks." |
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