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;
}
