private static void EmitTextureMipMapLevel(EmitterContext context, bool isBindless)
{
OpCodeTexture op = (OpCodeTexture)context.CurrOp;
if (op.Rd.IsRZ)
{
return;
}
int raIndex = op.Ra.Index;
int rbIndex = op.Rb.Index;
Operand Ra()
{
if (raIndex > RegisterConsts.RegisterZeroIndex)
{
return(Const(0));
}
return(context.Copy(Register(raIndex++, RegisterType.Gpr)));
}
Operand Rb()
{
if (rbIndex > RegisterConsts.RegisterZeroIndex)
{
return(Const(0));
}
return(context.Copy(Register(rbIndex++, RegisterType.Gpr)));
}
TextureFlags flags = TextureFlags.None;
List <Operand> sourcesList = new List <Operand>();
if (isBindless)
{
sourcesList.Add(Rb());
flags |= TextureFlags.Bindless;
}
SamplerType type = ConvertSamplerType(op.Dimensions);
int coordsCount = type.GetDimensions();
Operand arrayIndex = op.IsArray ? Ra() : null;
for (int index = 0; index < coordsCount; index++)
{
sourcesList.Add(Ra());
}
if (op.IsArray)
{
sourcesList.Add(arrayIndex);
type |= SamplerType.Array;
}
Operand[] sources = sourcesList.ToArray();
int rdIndex = op.Rd.Index;
Operand GetDest()
{
if (rdIndex > RegisterConsts.RegisterZeroIndex)
{
return(Const(0));
}
return(Register(rdIndex++, RegisterType.Gpr));
}
int handle = !isBindless ? op.Immediate : 0;
for (int compMask = op.ComponentMask, compIndex = 0; compMask != 0; compMask >>= 1, compIndex++)
{
if ((compMask & 1) != 0)
{
Operand dest = GetDest();
// Components z and w aren't standard, we return 0 in this case and add a comment.
if (compIndex >= 2)
{
context.Add(new CommentNode("Unsupported component z or w found"));
context.Copy(dest, Const(0));
}
else
{
Operand tempDest = Local();
TextureOperation operation = new TextureOperation(
Instruction.Lod,
type,
flags,
handle,
compIndex,
tempDest,
sources);
context.Add(operation);
tempDest = context.FPMultiply(tempDest, ConstF(256.0f));
Operand finalValue = context.FPConvertToS32(tempDest);
context.Copy(dest, finalValue);
}
}
}
}
private static void EmitTextureSample(EmitterContext context, TextureFlags flags)
{
OpCodeTexture op = (OpCodeTexture)context.CurrOp;
bool isBindless = (flags & TextureFlags.Bindless) != 0;
if (op.Rd.IsRZ)
{
return;
}
int raIndex = op.Ra.Index;
int rbIndex = op.Rb.Index;
Operand Ra()
{
if (raIndex > RegisterConsts.RegisterZeroIndex)
{
return(Const(0));
}
return(context.Copy(Register(raIndex++, RegisterType.Gpr)));
}
Operand Rb()
{
if (rbIndex > RegisterConsts.RegisterZeroIndex)
{
return(Const(0));
}
return(context.Copy(Register(rbIndex++, RegisterType.Gpr)));
}
Operand arrayIndex = op.IsArray ? Ra() : null;
List <Operand> sourcesList = new List <Operand>();
if (isBindless)
{
sourcesList.Add(Rb());
}
SamplerType type = ConvertSamplerType(op.Dimensions);
int coordsCount = type.GetDimensions();
for (int index = 0; index < coordsCount; index++)
{
sourcesList.Add(Ra());
}
if (op.IsArray)
{
sourcesList.Add(arrayIndex);
type |= SamplerType.Array;
}
bool hasLod = op.LodMode > TextureLodMode.LodZero;
Operand lodValue = hasLod ? Rb() : ConstF(0);
Operand packedOffs = op.HasOffset ? Rb() : null;
if (op.HasDepthCompare)
{
sourcesList.Add(Rb());
type |= SamplerType.Shadow;
}
if ((op.LodMode == TextureLodMode.LodZero ||
op.LodMode == TextureLodMode.LodLevel ||
op.LodMode == TextureLodMode.LodLevelA) && !op.IsMultisample)
{
sourcesList.Add(lodValue);
flags |= TextureFlags.LodLevel;
}
if (op.HasOffset)
{
for (int index = 0; index < coordsCount; index++)
{
sourcesList.Add(context.BitfieldExtractS32(packedOffs, Const(index * 4), Const(4)));
}
flags |= TextureFlags.Offset;
}
if (op.LodMode == TextureLodMode.LodBias ||
op.LodMode == TextureLodMode.LodBiasA)
{
sourcesList.Add(lodValue);
flags |= TextureFlags.LodBias;
}
if (op.IsMultisample)
{
sourcesList.Add(Rb());
type |= SamplerType.Multisample;
}
Operand[] sources = sourcesList.ToArray();
int rdIndex = op.Rd.Index;
Operand GetDest()
{
if (rdIndex > RegisterConsts.RegisterZeroIndex)
{
return(Const(0));
}
return(Register(rdIndex++, RegisterType.Gpr));
}
int handle = !isBindless ? op.Immediate : 0;
for (int compMask = op.ComponentMask, compIndex = 0; compMask != 0; compMask >>= 1, compIndex++)
{
if ((compMask & 1) != 0)
{
Operand dest = GetDest();
TextureOperation operation = new TextureOperation(
Instruction.TextureSample,
type,
flags,
handle,
compIndex,
dest,
sources);
context.Add(operation);
}
}
}
private static void EmitTextureSample(EmitterContext context, TextureFlags flags)
{
OpCodeTexture op = (OpCodeTexture)context.CurrOp;
bool isBindless = (flags & TextureFlags.Bindless) != 0;
if (op.Rd.IsRZ)
{
return;
}
int raIndex = op.Ra.Index;
int rbIndex = op.Rb.Index;
Operand Ra()
{
if (raIndex > RegisterConsts.RegisterZeroIndex)
{
return(Const(0));
}
return(context.Copy(Register(raIndex++, RegisterType.Gpr)));
}
Operand Rb()
{
if (rbIndex > RegisterConsts.RegisterZeroIndex)
{
return(Const(0));
}
return(context.Copy(Register(rbIndex++, RegisterType.Gpr)));
}
Operand arrayIndex = op.IsArray ? Ra() : null;
List <Operand> sourcesList = new List <Operand>();
if (isBindless)
{
sourcesList.Add(Rb());
}
SamplerType type = ConvertSamplerType(op.Dimensions);
bool hasLod = op.LodMode > TextureLodMode.LodZero;
if (type == SamplerType.Texture1D && (flags & ~TextureFlags.Bindless) == TextureFlags.IntCoords && !(hasLod ||
op.HasDepthCompare ||
op.HasOffset ||
op.IsArray ||
op.IsMultisample))
{
// For bindless, we don't have any way to know the texture type,
// so we assume it's texture buffer when the sampler type is 1D, since that's more common.
bool isTypeBuffer = isBindless || context.Config.GpuAccessor.QueryIsTextureBuffer(op.Immediate);
if (isTypeBuffer)
{
type = SamplerType.TextureBuffer;
}
}
int coordsCount = type.GetDimensions();
for (int index = 0; index < coordsCount; index++)
{
sourcesList.Add(Ra());
}
if (op.IsArray)
{
sourcesList.Add(arrayIndex);
type |= SamplerType.Array;
}
Operand lodValue = hasLod ? Rb() : ConstF(0);
Operand packedOffs = op.HasOffset ? Rb() : null;
if (op.HasDepthCompare)
{
sourcesList.Add(Rb());
type |= SamplerType.Shadow;
}
if ((op.LodMode == TextureLodMode.LodZero ||
op.LodMode == TextureLodMode.LodLevel ||
op.LodMode == TextureLodMode.LodLevelA) && !op.IsMultisample && type != SamplerType.TextureBuffer)
{
sourcesList.Add(lodValue);
flags |= TextureFlags.LodLevel;
}
if (op.HasOffset)
{
for (int index = 0; index < coordsCount; index++)
{
sourcesList.Add(context.BitfieldExtractS32(packedOffs, Const(index * 4), Const(4)));
}
flags |= TextureFlags.Offset;
}
if (op.LodMode == TextureLodMode.LodBias ||
op.LodMode == TextureLodMode.LodBiasA)
{
sourcesList.Add(lodValue);
flags |= TextureFlags.LodBias;
}
if (op.IsMultisample)
{
sourcesList.Add(Rb());
type |= SamplerType.Multisample;
}
Operand[] sources = sourcesList.ToArray();
int rdIndex = op.Rd.Index;
Operand GetDest()
{
if (rdIndex > RegisterConsts.RegisterZeroIndex)
{
return(Const(0));
}
return(Register(rdIndex++, RegisterType.Gpr));
}
int handle = !isBindless ? op.Immediate : 0;
for (int compMask = op.ComponentMask, compIndex = 0; compMask != 0; compMask >>= 1, compIndex++)
{
if ((compMask & 1) != 0)
{
Operand dest = GetDest();
TextureOperation operation = new TextureOperation(
Instruction.TextureSample,
type,
flags,
handle,
compIndex,
dest,
sources);
context.Add(operation);
}
}
}