static GLboolean
Parse_ScalarInstruction(struct parse_state *parseState,
struct vp_instruction *inst, enum vp_opcode opcode)
{
if (opcode == VP_OPCODE_RCC && !parseState->isVersion1_1)
RETURN_ERROR1("RCC illegal for vertex program 1.0");
inst->Opcode = opcode;
inst->StringPos = parseState->curLine - parseState->start;
/* dest reg */
if (!Parse_MaskedDstReg(parseState, &inst->DstReg))
RETURN_ERROR;
/* comma */
if (!Parse_String(parseState, ","))
RETURN_ERROR;
/* first src arg */
if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[0]))
RETURN_ERROR;
/* semicolon */
if (!Parse_String(parseState, ";"))
RETURN_ERROR;
return GL_TRUE;
}
static GLint
Parse_UnaryOpInstruction(struct parse_state *parseState,
struct prog_instruction *inst,
enum prog_opcode opcode)
{
if (opcode == OPCODE_ABS && !parseState->isVersion1_1)
RETURN_ERROR1("ABS illegal for vertex program 1.0");
inst->Opcode = opcode;
inst->StringPos = parseState->curLine - parseState->start;
/* dest reg */
if (!Parse_MaskedDstReg(parseState, &inst->DstReg))
RETURN_ERROR;
/* comma */
if (!Parse_String(parseState, ","))
RETURN_ERROR;
/* src arg */
if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[0]))
RETURN_ERROR;
/* semicolon */
if (!Parse_String(parseState, ";"))
RETURN_ERROR;
return GL_TRUE;
}
static GLboolean
Parse_BiOpInstruction(struct parse_state *parseState,
struct prog_instruction *inst,
enum prog_opcode opcode)
{
if (opcode == OPCODE_DPH && !parseState->isVersion1_1)
RETURN_ERROR1("DPH illegal for vertex program 1.0");
if (opcode == OPCODE_SUB && !parseState->isVersion1_1)
RETURN_ERROR1("SUB illegal for vertex program 1.0");
inst->Opcode = opcode;
inst->StringPos = parseState->curLine - parseState->start;
/* dest reg */
if (!Parse_MaskedDstReg(parseState, &inst->DstReg))
RETURN_ERROR;
/* comma */
if (!Parse_String(parseState, ","))
RETURN_ERROR;
/* first src arg */
if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[0]))
RETURN_ERROR;
/* comma */
if (!Parse_String(parseState, ","))
RETURN_ERROR;
/* second src arg */
if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[1]))
RETURN_ERROR;
/* semicolon */
if (!Parse_String(parseState, ";"))
RETURN_ERROR;
/* make sure we don't reference more than one program parameter register */
if (inst->SrcReg[0].File == PROGRAM_ENV_PARAM &&
inst->SrcReg[1].File == PROGRAM_ENV_PARAM &&
inst->SrcReg[0].Index != inst->SrcReg[1].Index)
RETURN_ERROR1("Can't reference two program parameter registers");
/* make sure we don't reference more than one vertex attribute register */
if (inst->SrcReg[0].File == PROGRAM_INPUT &&
inst->SrcReg[1].File == PROGRAM_INPUT &&
inst->SrcReg[0].Index != inst->SrcReg[1].Index)
RETURN_ERROR1("Can't reference two vertex attribute registers");
return GL_TRUE;
}
static GLboolean
Parse_TriOpInstruction(struct parse_state *parseState,
struct vp_instruction *inst, enum vp_opcode opcode)
{
inst->Opcode = opcode;
inst->StringPos = parseState->curLine - parseState->start;
/* dest reg */
if (!Parse_MaskedDstReg(parseState, &inst->DstReg))
RETURN_ERROR;
/* comma */
if (!Parse_String(parseState, ","))
RETURN_ERROR;
/* first src arg */
if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[0]))
RETURN_ERROR;
/* comma */
if (!Parse_String(parseState, ","))
RETURN_ERROR;
/* second src arg */
if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[1]))
RETURN_ERROR;
/* comma */
if (!Parse_String(parseState, ","))
RETURN_ERROR;
/* third src arg */
if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[2]))
RETURN_ERROR;
/* semicolon */
if (!Parse_String(parseState, ";"))
RETURN_ERROR;
/* make sure we don't reference more than one program parameter register */
if ((inst->SrcReg[0].File == PROGRAM_ENV_PARAM &&
inst->SrcReg[1].File == PROGRAM_ENV_PARAM &&
inst->SrcReg[0].Index != inst->SrcReg[1].Index) ||
(inst->SrcReg[0].File == PROGRAM_ENV_PARAM &&
inst->SrcReg[2].File == PROGRAM_ENV_PARAM &&
inst->SrcReg[0].Index != inst->SrcReg[2].Index) ||
(inst->SrcReg[1].File == PROGRAM_ENV_PARAM &&
inst->SrcReg[2].File == PROGRAM_ENV_PARAM &&
inst->SrcReg[1].Index != inst->SrcReg[2].Index))
RETURN_ERROR1("Can only reference one program register");
/* make sure we don't reference more than one vertex attribute register */
if ((inst->SrcReg[0].File == PROGRAM_INPUT &&
inst->SrcReg[1].File == PROGRAM_INPUT &&
inst->SrcReg[0].Index != inst->SrcReg[1].Index) ||
(inst->SrcReg[0].File == PROGRAM_INPUT &&
inst->SrcReg[2].File == PROGRAM_INPUT &&
inst->SrcReg[0].Index != inst->SrcReg[2].Index) ||
(inst->SrcReg[1].File == PROGRAM_INPUT &&
inst->SrcReg[2].File == PROGRAM_INPUT &&
inst->SrcReg[1].Index != inst->SrcReg[2].Index))
RETURN_ERROR1("Can only reference one input register");
return GL_TRUE;
}
static GLboolean
Parse_InstructionSequence(struct parse_state *parseState,
struct prog_instruction program[])
{
while (1) {
struct prog_instruction *inst = program + parseState->numInst;
struct instruction_pattern instMatch;
GLubyte token[100];
/* Initialize the instruction */
_mesa_init_instructions(inst, 1);
/* special instructions */
if (Parse_String(parseState, "DEFINE")) {
GLubyte id[100];
GLfloat value[7]; /* yes, 7 to be safe */
if (!Parse_Identifier(parseState, id))
RETURN_ERROR;
/* XXX make sure id is not a reserved identifer, like R9 */
if (!Parse_String(parseState, "="))
RETURN_ERROR1("Expected =");
if (!Parse_VectorOrScalarConstant(parseState, value))
RETURN_ERROR;
if (!Parse_String(parseState, ";"))
RETURN_ERROR1("Expected ;");
if (_mesa_lookup_parameter_index(parseState->parameters,
-1, (const char *) id) >= 0) {
RETURN_ERROR2(id, "already defined");
}
_mesa_add_named_parameter(parseState->parameters,
(const char *) id, value);
}
else if (Parse_String(parseState, "DECLARE")) {
GLubyte id[100];
GLfloat value[7] = {0, 0, 0, 0, 0, 0, 0}; /* yes, to be safe */
if (!Parse_Identifier(parseState, id))
RETURN_ERROR;
/* XXX make sure id is not a reserved identifer, like R9 */
if (Parse_String(parseState, "=")) {
if (!Parse_VectorOrScalarConstant(parseState, value))
RETURN_ERROR;
}
if (!Parse_String(parseState, ";"))
RETURN_ERROR1("Expected ;");
if (_mesa_lookup_parameter_index(parseState->parameters,
-1, (const char *) id) >= 0) {
RETURN_ERROR2(id, "already declared");
}
_mesa_add_named_parameter(parseState->parameters,
(const char *) id, value);
}
else if (Parse_String(parseState, "END")) {
inst->Opcode = OPCODE_END;
parseState->numInst++;
if (Parse_Token(parseState, token)) {
RETURN_ERROR1("Code after END opcode.");
}
break;
}
else {
/* general/arithmetic instruction */
/* get token */
if (!Parse_Token(parseState, token)) {
RETURN_ERROR1("Missing END instruction.");
}
/* try to find matching instuction */
instMatch = MatchInstruction(token);
if (instMatch.opcode >= MAX_OPCODE) {
/* bad instruction name */
RETURN_ERROR2("Unexpected token: ", token);
}
inst->Opcode = instMatch.opcode;
inst->Precision = instMatch.suffixes & (_R | _H | _X);
inst->SaturateMode = (instMatch.suffixes & (_S))
? SATURATE_ZERO_ONE : SATURATE_OFF;
inst->CondUpdate = (instMatch.suffixes & (_C)) ? GL_TRUE : GL_FALSE;
/*
* parse the input and output operands
*/
if (instMatch.outputs == OUTPUT_S || instMatch.outputs == OUTPUT_V) {
if (!Parse_MaskedDstReg(parseState, &inst->DstReg))
RETURN_ERROR;
if (!Parse_String(parseState, ","))
RETURN_ERROR1("Expected ,");
}
else if (instMatch.outputs == OUTPUT_NONE) {
if (instMatch.opcode == OPCODE_KIL_NV) {
/* This is a little weird, the cond code info is in
* the dest register.
*/
if (!Parse_CondCodeMask(parseState, &inst->DstReg))
RETURN_ERROR;
}
else {
ASSERT(instMatch.opcode == OPCODE_PRINT);
}
}
if (instMatch.inputs == INPUT_1V) {
if (!Parse_VectorSrc(parseState, &inst->SrcReg[0]))
RETURN_ERROR;
}
else if (instMatch.inputs == INPUT_2V) {
if (!Parse_VectorSrc(parseState, &inst->SrcReg[0]))
RETURN_ERROR;
if (!Parse_String(parseState, ","))
RETURN_ERROR1("Expected ,");
if (!Parse_VectorSrc(parseState, &inst->SrcReg[1]))
RETURN_ERROR;
}
else if (instMatch.inputs == INPUT_3V) {
if (!Parse_VectorSrc(parseState, &inst->SrcReg[0]))
RETURN_ERROR;
if (!Parse_String(parseState, ","))
RETURN_ERROR1("Expected ,");
if (!Parse_VectorSrc(parseState, &inst->SrcReg[1]))
RETURN_ERROR;
if (!Parse_String(parseState, ","))
RETURN_ERROR1("Expected ,");
if (!Parse_VectorSrc(parseState, &inst->SrcReg[2]))
RETURN_ERROR;
}
else if (instMatch.inputs == INPUT_1S) {
if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[0]))
RETURN_ERROR;
}
else if (instMatch.inputs == INPUT_2S) {
if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[0]))
RETURN_ERROR;
if (!Parse_String(parseState, ","))
RETURN_ERROR1("Expected ,");
if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[1]))
RETURN_ERROR;
}
else if (instMatch.inputs == INPUT_CC) {
/* XXX to-do */
}
else if (instMatch.inputs == INPUT_1V_T) {
GLubyte unit, idx;
if (!Parse_VectorSrc(parseState, &inst->SrcReg[0]))
RETURN_ERROR;
if (!Parse_String(parseState, ","))
RETURN_ERROR1("Expected ,");
if (!Parse_TextureImageId(parseState, &unit, &idx))
RETURN_ERROR;
inst->TexSrcUnit = unit;
inst->TexSrcTarget = idx;
}
else if (instMatch.inputs == INPUT_3V_T) {
GLubyte unit, idx;
if (!Parse_VectorSrc(parseState, &inst->SrcReg[0]))
RETURN_ERROR;
if (!Parse_String(parseState, ","))
RETURN_ERROR1("Expected ,");
if (!Parse_VectorSrc(parseState, &inst->SrcReg[1]))
RETURN_ERROR;
if (!Parse_String(parseState, ","))
RETURN_ERROR1("Expected ,");
if (!Parse_VectorSrc(parseState, &inst->SrcReg[2]))
RETURN_ERROR;
if (!Parse_String(parseState, ","))
RETURN_ERROR1("Expected ,");
if (!Parse_TextureImageId(parseState, &unit, &idx))
RETURN_ERROR;
inst->TexSrcUnit = unit;
inst->TexSrcTarget = idx;
}
else if (instMatch.inputs == INPUT_1V_S) {
if (!Parse_PrintInstruction(parseState, inst))
RETURN_ERROR;
}
/* end of statement semicolon */
if (!Parse_String(parseState, ";"))
RETURN_ERROR1("Expected ;");
parseState->numInst++;
if (parseState->numInst >= MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS)
RETURN_ERROR1("Program too long");
}
}
return GL_TRUE;
}