static GLboolean Parse_AddressInstruction(struct parse_state *parseState, struct prog_instruction *inst) { inst->Opcode = OPCODE_ARL; inst->StringPos = parseState->curLine - parseState->start; /* Make ARB_vp backends happy */ inst->DstReg.File = PROGRAM_ADDRESS; inst->DstReg.WriteMask = WRITEMASK_X; inst->DstReg.Index = 0; /* dest A0 reg */ if (!Parse_AddrReg(parseState)) RETURN_ERROR; /* comma */ if (!Parse_String(parseState, ",")) RETURN_ERROR; /* parse src reg */ if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[0])) RETURN_ERROR; /* semicolon */ if (!Parse_String(parseState, ";")) RETURN_ERROR; return GL_TRUE; }
static GLboolean Parse_AddressInstruction(struct parse_state *parseState, struct vp_instruction *inst) { inst->Opcode = VP_OPCODE_ARL; inst->StringPos = parseState->curLine - parseState->start; /* dest A0 reg */ if (!Parse_AddrReg(parseState)) RETURN_ERROR; /* comma */ if (!Parse_String(parseState, ",")) RETURN_ERROR; /* parse src reg */ if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[0])) RETURN_ERROR; /* semicolon */ if (!Parse_String(parseState, ";")) RETURN_ERROR; return GL_TRUE; }
static GLboolean Parse_ParamReg(struct parse_state *parseState, struct vp_src_register *srcReg) { GLubyte token[100]; if (!Parse_String(parseState, "c")) RETURN_ERROR; if (!Parse_String(parseState, "[")) RETURN_ERROR; if (!Peek_Token(parseState, token)) RETURN_ERROR; if (IsDigit(token[0])) { /* a numbered program parameter register */ GLint reg; (void) Parse_Token(parseState, token); reg = _mesa_atoi((char *) token); if (reg >= MAX_NV_VERTEX_PROGRAM_PARAMS) RETURN_ERROR1("Bad program parameter number"); srcReg->File = PROGRAM_ENV_PARAM; srcReg->Index = reg; } else if (_mesa_strcmp((const char *) token, "A0") == 0) { /* address register "A0.x" */ if (!Parse_AddrReg(parseState)) RETURN_ERROR; srcReg->RelAddr = GL_TRUE; srcReg->File = PROGRAM_ENV_PARAM; /* Look for +/-N offset */ if (!Peek_Token(parseState, token)) RETURN_ERROR; if (token[0] == '-' || token[0] == '+') { const GLubyte sign = token[0]; (void) Parse_Token(parseState, token); /* consume +/- */ /* an integer should be next */ if (!Parse_Token(parseState, token)) RETURN_ERROR; if (IsDigit(token[0])) { const GLint k = _mesa_atoi((char *) token); if (sign == '-') { if (k > 64) RETURN_ERROR1("Bad address offset"); srcReg->Index = -k; } else { if (k > 63) RETURN_ERROR1("Bad address offset"); srcReg->Index = k; } } else { RETURN_ERROR; } } else { /* probably got a ']', catch it below */ } } else { RETURN_ERROR; } /* Match closing ']' */ if (!Parse_String(parseState, "]")) RETURN_ERROR; return GL_TRUE; }