Ryujinx/Ryujinx.Graphics.Gpu/Engine/Threed/Blender/UcodeAssembler.cs

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using System;
using System.Collections.Generic;
namespace Ryujinx.Graphics.Gpu.Engine.Threed.Blender
{
/// <summary>
/// Blend microcode instruction.
/// </summary>
enum Instruction
{
Mmadd = 0,
Mmsub = 1,
Min = 2,
Max = 3,
Rcp = 4,
Add = 5,
Sub = 6
}
/// <summary>
/// Blend microcode condition code.
/// </summary>
enum CC
{
F = 0,
T = 1,
EQ = 2,
NE = 3,
LT = 4,
LE = 5,
GT = 6,
GE = 7
}
/// <summary>
/// Blend microcode opend B or D value.
/// </summary>
enum OpBD
{
ConstantZero = 0x0,
ConstantOne = 0x1,
SrcRGB = 0x2,
SrcAAA = 0x3,
OneMinusSrcAAA = 0x4,
DstRGB = 0x5,
DstAAA = 0x6,
OneMinusDstAAA = 0x7,
Temp0 = 0x9,
Temp1 = 0xa,
Temp2 = 0xb,
PBR = 0xc,
ConstantRGB = 0xd
}
/// <summary>
/// Blend microcode operand A or C value.
/// </summary>
enum OpAC
{
SrcRGB = 0,
DstRGB = 1,
SrcAAA = 2,
DstAAA = 3,
Temp0 = 4,
Temp1 = 5,
Temp2 = 6,
PBR = 7
}
/// <summary>
/// Blend microcode destination operand.
/// </summary>
enum OpDst
{
Temp0 = 0,
Temp1 = 1,
Temp2 = 2,
PBR = 3
}
/// <summary>
/// Blend microcode input swizzle.
/// </summary>
enum Swizzle
{
RGB = 0,
GBR = 1,
RRR = 2,
GGG = 3,
BBB = 4,
RToA = 5
}
/// <summary>
/// Blend microcode output components.
/// </summary>
enum WriteMask
{
RGB = 0,
R = 1,
G = 2,
B = 3
}
/// <summary>
/// Floating-point RGB color values.
/// </summary>
struct RgbFloat
{
/// <summary>
/// Red component value.
/// </summary>
public float R { get; }
/// <summary>
/// Green component value.
/// </summary>
public float G { get; }
/// <summary>
/// Blue component value.
/// </summary>
public float B { get; }
/// <summary>
/// Creates a new floating-point RGB value.
/// </summary>
/// <param name="r">Red component value</param>
/// <param name="g">Green component value</param>
/// <param name="b">Blue component value</param>
public RgbFloat(float r, float g, float b)
{
R = r;
G = g;
B = b;
}
}
/// <summary>
/// Blend microcode destination operand, including swizzle, write mask and condition code update flag.
/// </summary>
struct Dest
{
public static Dest Temp0 => new Dest(OpDst.Temp0, Swizzle.RGB, WriteMask.RGB, false);
public static Dest Temp1 => new Dest(OpDst.Temp1, Swizzle.RGB, WriteMask.RGB, false);
public static Dest Temp2 => new Dest(OpDst.Temp2, Swizzle.RGB, WriteMask.RGB, false);
public static Dest PBR => new Dest(OpDst.PBR, Swizzle.RGB, WriteMask.RGB, false);
public Dest GBR => new Dest(Dst, Swizzle.GBR, WriteMask, WriteCC);
public Dest RRR => new Dest(Dst, Swizzle.RRR, WriteMask, WriteCC);
public Dest GGG => new Dest(Dst, Swizzle.GGG, WriteMask, WriteCC);
public Dest BBB => new Dest(Dst, Swizzle.BBB, WriteMask, WriteCC);
public Dest RToA => new Dest(Dst, Swizzle.RToA, WriteMask, WriteCC);
public Dest R => new Dest(Dst, Swizzle, WriteMask.R, WriteCC);
public Dest G => new Dest(Dst, Swizzle, WriteMask.G, WriteCC);
public Dest B => new Dest(Dst, Swizzle, WriteMask.B, WriteCC);
public Dest CC => new Dest(Dst, Swizzle, WriteMask, true);
public OpDst Dst { get; }
public Swizzle Swizzle { get; }
public WriteMask WriteMask { get; }
public bool WriteCC { get; }
/// <summary>
/// Creates a new blend microcode destination operand.
/// </summary>
/// <param name="dst">Operand</param>
/// <param name="swizzle">Swizzle</param>
/// <param name="writeMask">Write maks</param>
/// <param name="writeCC">Indicates if condition codes should be updated</param>
public Dest(OpDst dst, Swizzle swizzle, WriteMask writeMask, bool writeCC)
{
Dst = dst;
Swizzle = swizzle;
WriteMask = writeMask;
WriteCC = writeCC;
}
}
/// <summary>
/// Blend microcode operaiton.
/// </summary>
struct UcodeOp
{
public readonly uint Word;
/// <summary>
/// Creates a new blend microcode operation.
/// </summary>
/// <param name="cc">Condition code that controls whenever the operation is executed or not</param>
/// <param name="inst">Instruction</param>
/// <param name="constIndex">Index on the constant table of the constant used by any constant operand</param>
/// <param name="dest">Destination operand</param>
/// <param name="srcA">First input operand</param>
/// <param name="srcB">Second input operand</param>
/// <param name="srcC">Third input operand</param>
/// <param name="srcD">Fourth input operand</param>
public UcodeOp(CC cc, Instruction inst, int constIndex, Dest dest, OpAC srcA, OpBD srcB, OpAC srcC, OpBD srcD)
{
Word = (uint)cc |
((uint)inst << 3) |
((uint)constIndex << 6) |
((uint)srcA << 9) |
((uint)srcB << 12) |
((uint)srcC << 16) |
((uint)srcD << 19) |
((uint)dest.Swizzle << 23) |
((uint)dest.WriteMask << 26) |
((uint)dest.Dst << 28) |
(dest.WriteCC ? (1u << 31) : 0);
}
}
/// <summary>
/// Blend microcode assembler.
/// </summary>
struct UcodeAssembler
{
private List<uint> _code;
private RgbFloat[] _constants;
private int _constantIndex;
public void Mul(CC cc, Dest dest, OpAC srcA, OpBD srcB)
{
Assemble(cc, Instruction.Mmadd, dest, srcA, srcB, OpAC.SrcRGB, OpBD.ConstantZero);
}
public void Madd(CC cc, Dest dest, OpAC srcA, OpBD srcB, OpAC srcC)
{
Assemble(cc, Instruction.Mmadd, dest, srcA, srcB, srcC, OpBD.ConstantOne);
}
public void Mmadd(CC cc, Dest dest, OpAC srcA, OpBD srcB, OpAC srcC, OpBD srcD)
{
Assemble(cc, Instruction.Mmadd, dest, srcA, srcB, srcC, srcD);
}
public void Mmsub(CC cc, Dest dest, OpAC srcA, OpBD srcB, OpAC srcC, OpBD srcD)
{
Assemble(cc, Instruction.Mmsub, dest, srcA, srcB, srcC, srcD);
}
public void Min(CC cc, Dest dest, OpAC srcA, OpBD srcB)
{
Assemble(cc, Instruction.Min, dest, srcA, srcB, OpAC.SrcRGB, OpBD.ConstantZero);
}
public void Max(CC cc, Dest dest, OpAC srcA, OpBD srcB)
{
Assemble(cc, Instruction.Max, dest, srcA, srcB, OpAC.SrcRGB, OpBD.ConstantZero);
}
public void Rcp(CC cc, Dest dest, OpAC srcA)
{
Assemble(cc, Instruction.Rcp, dest, srcA, OpBD.ConstantZero, OpAC.SrcRGB, OpBD.ConstantZero);
}
public void Mov(CC cc, Dest dest, OpBD srcB)
{
Assemble(cc, Instruction.Add, dest, OpAC.SrcRGB, srcB, OpAC.SrcRGB, OpBD.ConstantZero);
}
public void Add(CC cc, Dest dest, OpBD srcB, OpBD srcD)
{
Assemble(cc, Instruction.Add, dest, OpAC.SrcRGB, srcB, OpAC.SrcRGB, srcD);
}
public void Sub(CC cc, Dest dest, OpBD srcB, OpBD srcD)
{
Assemble(cc, Instruction.Sub, dest, OpAC.SrcRGB, srcB, OpAC.SrcRGB, srcD);
}
private void Assemble(CC cc, Instruction inst, Dest dest, OpAC srcA, OpBD srcB, OpAC srcC, OpBD srcD)
{
(_code ??= new List<uint>()).Add(new UcodeOp(cc, inst, _constantIndex, dest, srcA, srcB, srcC, srcD).Word);
}
public void SetConstant(int index, float r, float g, float b)
{
if (_constants == null)
{
_constants = new RgbFloat[index + 1];
}
else if (_constants.Length <= index)
{
Array.Resize(ref _constants, index + 1);
}
_constants[index] = new RgbFloat(r, g, b);
_constantIndex = index;
}
public uint[] GetCode()
{
return _code?.ToArray();
}
public RgbFloat[] GetConstants()
{
return _constants;
}
}
}