public static void Ald(EmitterContext context)
{
InstAld op = context.GetOp <InstAld>();
Operand primVertex = context.Copy(GetSrcReg(context, op.SrcB));
for (int index = 0; index < (int)op.AlSize + 1; index++)
{
Register rd = new Register(op.Dest + index, RegisterType.Gpr);
if (rd.IsRZ)
{
break;
}
if (op.Phys)
{
Operand userAttrOffset = context.ISubtract(GetSrcReg(context, op.SrcA), Const(AttributeConsts.UserAttributeBase));
Operand userAttrIndex = context.ShiftRightU32(userAttrOffset, Const(2));
context.Copy(Register(rd), context.LoadAttribute(Const(AttributeConsts.UserAttributeBase), userAttrIndex, primVertex));
context.Config.SetUsedFeature(FeatureFlags.IaIndexing);
}
else if (op.SrcB == RegisterConsts.RegisterZeroIndex || op.P)
{
int offset = FixedFuncToUserAttribute(context.Config, op.Imm11 + index * 4, op.O);
context.FlagAttributeRead(offset);
if (op.O)
{
offset |= AttributeConsts.LoadOutputMask;
}
Operand src = op.P ? AttributePerPatch(offset) : Attribute(offset);
context.Copy(Register(rd), src);
}
else
{
int offset = FixedFuncToUserAttribute(context.Config, op.Imm11 + index * 4, op.O);
context.FlagAttributeRead(offset);
if (op.O)
{
offset |= AttributeConsts.LoadOutputMask;
}
Operand src = Const(offset);
context.Copy(Register(rd), context.LoadAttribute(src, Const(0), primVertex));
}
}
}
private static void SetUserAttributeUses(ShaderConfig config, InstName name, ulong opCode)
{
int offset;
int count = 1;
bool isStore = false;
bool indexed = false;
bool perPatch = false;
if (name == InstName.Ast)
{
InstAst opAst = new InstAst(opCode);
count = (int)opAst.AlSize + 1;
offset = opAst.Imm11;
indexed = opAst.Phys;
perPatch = opAst.P;
isStore = true;
}
else if (name == InstName.Ald)
{
InstAld opAld = new InstAld(opCode);
count = (int)opAld.AlSize + 1;
offset = opAld.Imm11;
indexed = opAld.Phys;
perPatch = opAld.P;
isStore = opAld.O;
}
else /* if (name == InstName.Ipa) */
{
InstIpa opIpa = new InstIpa(opCode);
offset = opIpa.Imm10;
indexed = opIpa.Idx;
}
if (indexed)
{
if (isStore)
{
config.SetAllOutputUserAttributes();
}
else
{
config.SetAllInputUserAttributes();
}
}
else
{
for (int elemIndex = 0; elemIndex < count; elemIndex++)
{
int attr = offset + elemIndex * 4;
if (attr >= AttributeConsts.UserAttributeBase && attr < AttributeConsts.UserAttributeEnd)
{
int index = (attr - AttributeConsts.UserAttributeBase) / 16;
if (isStore)
{
config.SetOutputUserAttribute(index, perPatch);
}
else
{
config.SetInputUserAttribute(index, perPatch);
}
}
if (!isStore &&
((attr >= AttributeConsts.FrontColorDiffuseR && attr < AttributeConsts.ClipDistance0) ||
(attr >= AttributeConsts.TexCoordBase && attr < AttributeConsts.TexCoordEnd)))
{
config.SetUsedFeature(FeatureFlags.FixedFuncAttr);
}
}
}
}
