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using ChocolArm64.Memory;
using Ryujinx.Graphics.Gal;
using System.Collections.Generic;
namespace Ryujinx.Graphics.Gpu
{
public class NvGpuEngine2d : INvGpuEngine
{
private enum CopyOperation
{
SrcCopyAnd,
RopAnd,
Blend,
SrcCopy,
Rop,
SrcCopyPremult,
BlendPremult
}
public int[] Registers { get; private set; }
private NsGpu Gpu;
private Dictionary<int, NvGpuMethod> Methods;
public NvGpuEngine2d(NsGpu Gpu)
{
this.Gpu = Gpu;
Registers = new int[0xe00];
Methods = new Dictionary<int, NvGpuMethod>();
void AddMethod(int Meth, int Count, int Stride, NvGpuMethod Method)
{
while (Count-- > 0)
{
Methods.Add(Meth, Method);
Meth += Stride;
}
}
AddMethod(0xb5, 1, 1, TextureCopy);
}
public void CallMethod(AMemory Memory, NsGpuPBEntry PBEntry)
{
if (Methods.TryGetValue(PBEntry.Method, out NvGpuMethod Method))
{
Method(Memory, PBEntry);
}
else
{
WriteRegister(PBEntry);
}
}
private void TextureCopy(AMemory Memory, NsGpuPBEntry PBEntry)
{
CopyOperation Operation = (CopyOperation)ReadRegister(NvGpuEngine2dReg.CopyOperation);
bool SrcLinear = ReadRegister(NvGpuEngine2dReg.SrcLinear) != 0;
int SrcWidth = ReadRegister(NvGpuEngine2dReg.SrcWidth);
int SrcHeight = ReadRegister(NvGpuEngine2dReg.SrcHeight);
bool DstLinear = ReadRegister(NvGpuEngine2dReg.DstLinear) != 0;
int DstWidth = ReadRegister(NvGpuEngine2dReg.DstWidth);
int DstHeight = ReadRegister(NvGpuEngine2dReg.DstHeight);
int DstPitch = ReadRegister(NvGpuEngine2dReg.DstPitch);
int DstBlkDim = ReadRegister(NvGpuEngine2dReg.DstBlockDimensions);
TextureSwizzle DstSwizzle = DstLinear
? TextureSwizzle.Pitch
: TextureSwizzle.BlockLinear;
int DstBlockHeight = 1 << ((DstBlkDim >> 4) & 0xf);
long Tag = MakeInt64From2xInt32(NvGpuEngine2dReg.SrcAddress);
TryGetCpuAddr(NvGpuEngine2dReg.SrcAddress, out long SrcAddress);
TryGetCpuAddr(NvGpuEngine2dReg.DstAddress, out long DstAddress);
bool IsFbTexture = Gpu.Engine3d.IsFrameBufferPosition(Tag);
if (IsFbTexture && DstLinear)
{
DstSwizzle = TextureSwizzle.BlockLinear;
}
Texture DstTexture = new Texture(
DstAddress,
DstWidth,
DstHeight,
DstBlockHeight,
DstBlockHeight,
DstSwizzle,
GalTextureFormat.A8B8G8R8);
if (IsFbTexture)
{
Gpu.Renderer.GetFrameBufferData(Tag, (byte[] Buffer) =>
{
CopyTexture(Memory, DstTexture, Buffer);
});
}
else
{
long Size = SrcWidth * SrcHeight * 4;
byte[] Buffer = AMemoryHelper.ReadBytes(Memory, SrcAddress, Size);
CopyTexture(Memory, DstTexture, Buffer);
}
}
private void CopyTexture(AMemory Memory, Texture Texture, byte[] Buffer)
{
TextureWriter.Write(Memory, Texture, Buffer);
}
private bool TryGetCpuAddr(NvGpuEngine2dReg Reg, out long Position)
{
Position = MakeInt64From2xInt32(Reg);
Position = Gpu.GetCpuAddr(Position);
return Position != -1;
}
private long MakeInt64From2xInt32(NvGpuEngine2dReg Reg)
{
return
(long)Registers[(int)Reg + 0] << 32 |
(uint)Registers[(int)Reg + 1];
}
private void WriteRegister(NsGpuPBEntry PBEntry)
{
int ArgsCount = PBEntry.Arguments.Count;
if (ArgsCount > 0)
{
Registers[PBEntry.Method] = PBEntry.Arguments[ArgsCount - 1];
}
}
private int ReadRegister(NvGpuEngine2dReg Reg)
{
return Registers[(int)Reg];
}
private void WriteRegister(NvGpuEngine2dReg Reg, int Value)
{
Registers[(int)Reg] = Value;
}
}
}
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