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Implement SSY/SYNC shader instructions (#382)

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* Use a program counter to control shaders' flow

* Cleanup

* Implement SSY/SYNC

* Address feedback

* Fixup commentary

* Fixup Ssy instruction
This commit is contained in:
ReinUsesLisp 2018-08-31 13:14:04 -03:00 • committed by gdkchan
parent 7cb6fd8090
commit 42dc925c3d
11 changed files with 313 additions and 268 deletions
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31
Ryujinx.Graphics/Gal/Shader/ShaderDecodeFlow.cs
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@ -6,7 +6,7 @@ namespace Ryujinx.Graphics.Gal.Shader
{
static partial class ShaderDecode
{
public static void Bra(ShaderIrBlock Block, long OpCode)
public static void Bra(ShaderIrBlock Block, long OpCode, long Position)
{
if ((OpCode & 0x20) != 0)
{
@ -22,7 +22,7 @@ namespace Ryujinx.Graphics.Gal.Shader
Block.AddNode(GetPredNode(new ShaderIrOp(ShaderIrInst.Bra, Imm), OpCode));
}
public static void Exit(ShaderIrBlock Block, long OpCode)
public static void Exit(ShaderIrBlock Block, long OpCode, long Position)
{
int CCode = (int)OpCode & 0x1f;
@ -34,9 +34,34 @@ namespace Ryujinx.Graphics.Gal.Shader
}
public static void Kil(ShaderIrBlock Block, long OpCode)
public static void Kil(ShaderIrBlock Block, long OpCode, long Position)
{
Block.AddNode(GetPredNode(new ShaderIrOp(ShaderIrInst.Kil), OpCode));
}
public static void Ssy(ShaderIrBlock Block, long OpCode, long Position)
{
if ((OpCode & 0x20) != 0)
{
//This reads the target offset from the constant buffer.
//Almost impossible to support with GLSL.
throw new NotImplementedException();
}
int Offset = ((int)(OpCode >> 20) << 8) >> 8;
int Target = (int)(Position + Offset);
ShaderIrOperImm Imm = new ShaderIrOperImm(Target);
Block.AddNode(new ShaderIrOp(ShaderIrInst.Ssy, Imm));
}
public static void Sync(ShaderIrBlock Block, long OpCode, long Position)
{
//TODO: Implement Sync condition codes
Block.AddNode(GetPredNode(new ShaderIrOp(ShaderIrInst.Sync), OpCode));
}
}
}