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mesa: added some assertions in BNGLOOP/ENDLOOP cases

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This commit is contained in:
Brian Paul 2009-12-22 12:57:31 -07:00
parent d186079520
commit e8ea2d26cd
1 changed files with 4 additions and 0 deletions
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4
src/mesa/shader/prog_execute.c
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@ -684,9 +684,13 @@ _mesa_execute_program(GLcontext * ctx,
break;
case OPCODE_BGNLOOP:
/* no-op */
ASSERT(program->Instructions[inst->BranchTarget].Opcode
== OPCODE_ENDLOOP);
break;
case OPCODE_ENDLOOP:
/* subtract 1 here since pc is incremented by for(pc) loop */
ASSERT(program->Instructions[inst->BranchTarget].Opcode
== OPCODE_BGNLOOP);
pc = inst->BranchTarget - 1; /* go to matching BNGLOOP */
break;
case OPCODE_BGNSUB: /* begin subroutine */