Ryujinx/Ryujinx.Graphics/Gal/Shader/ShaderDecoder.cs

50 lines
No EOL
1.3 KiB
C#

namespace Ryujinx.Graphics.Gal.Shader
{
static class ShaderDecoder
{
public static ShaderIrBlock DecodeBasicBlock(int[] Code, int Offset, GalShaderType ShaderType)
{
ShaderIrBlock Block = new ShaderIrBlock();
while (Offset + 2 <= Code.Length)
{
//Ignore scheduling instructions, which are
//written every 32 bytes.
if ((Offset & 7) == 0)
{
Offset += 2;
continue;
}
uint Word0 = (uint)Code[Offset++];
uint Word1 = (uint)Code[Offset++];
long OpCode = Word0 | (long)Word1 << 32;
ShaderDecodeFunc Decode = ShaderOpCodeTable.GetDecoder(OpCode);
if (Decode == null)
{
continue;
}
Decode(Block, OpCode);
if (Block.GetLastNode() is ShaderIrOp Op && IsFlowChange(Op.Inst))
{
break;
}
}
Block.RunOptimizationPasses(ShaderType);
return Block;
}
private static bool IsFlowChange(ShaderIrInst Inst)
{
return Inst == ShaderIrInst.Exit;
}
}
}