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Implement some GPU features (#209)

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* Implement stencil testing

* Implement depth testing

* Implement face culling

* Implement front face

* Comparison functions now take OGL enums too

* Fix front facing when flipping was used

* Add depth and stencil clear values
This commit is contained in:
ReinUsesLisp 2018-07-05 15:47:29 -03:00 • committed by gdkchan
parent c99b2884e4
commit 97ca974213
9 changed files with 334 additions and 18 deletions
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157
Ryujinx.HLE/Gpu/Engines/NvGpuEngine3d.cs
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@ -79,8 +79,10 @@ namespace Ryujinx.HLE.Gpu.Engines
Gpu.Renderer.Shader.BindProgram();
SetFrontFace();
SetCullFace();
SetDepth();
SetStencil();
SetAlphaBlending();
UploadTextures(Vmm, Keys);
@ -173,14 +175,8 @@ namespace Ryujinx.HLE.Gpu.Engines
Gpu.Renderer.Shader.Bind(Key);
}
int RawSX = ReadRegister(NvGpuEngine3dReg.ViewportScaleX);
int RawSY = ReadRegister(NvGpuEngine3dReg.ViewportScaleY);
float SX = BitConverter.Int32BitsToSingle(RawSX);
float SY = BitConverter.Int32BitsToSingle(RawSY);
float SignX = MathF.Sign(SX);
float SignY = MathF.Sign(SY);
float SignX = GetFlipSign(NvGpuEngine3dReg.ViewportScaleX);
float SignY = GetFlipSign(NvGpuEngine3dReg.ViewportScaleY);
Gpu.Renderer.Shader.SetFlip(SignX, SignY);
@ -202,14 +198,145 @@ namespace Ryujinx.HLE.Gpu.Engines
throw new ArgumentOutOfRangeException(nameof(Program));
}
private void SetFrontFace()
{
float SignX = GetFlipSign(NvGpuEngine3dReg.ViewportScaleX);
float SignY = GetFlipSign(NvGpuEngine3dReg.ViewportScaleY);
GalFrontFace FrontFace = (GalFrontFace)ReadRegister(NvGpuEngine3dReg.FrontFace);
//Flipping breaks facing. Flipping front facing too fixes it
if (SignX != SignY)
{
switch (FrontFace)
{
case GalFrontFace.CW:
FrontFace = GalFrontFace.CCW;
break;
case GalFrontFace.CCW:
FrontFace = GalFrontFace.CW;
break;
}
}
Gpu.Renderer.Rasterizer.SetFrontFace(FrontFace);
}
private void SetCullFace()
{
//TODO.
bool Enable = (ReadRegister(NvGpuEngine3dReg.CullFaceEnable) & 1) != 0;
if (Enable)
{
Gpu.Renderer.Rasterizer.EnableCullFace();
}
else
{
Gpu.Renderer.Rasterizer.DisableCullFace();
}
if (!Enable)
{
return;
}
GalCullFace CullFace = (GalCullFace)ReadRegister(NvGpuEngine3dReg.CullFace);
Gpu.Renderer.Rasterizer.SetCullFace(CullFace);
}
private void SetDepth()
{
//TODO.
float ClearDepth = ReadRegisterFloat(NvGpuEngine3dReg.ClearDepth);
Gpu.Renderer.Rasterizer.SetClearDepth(ClearDepth);
bool Enable = (ReadRegister(NvGpuEngine3dReg.DepthTestEnable) & 1) != 0;
if (Enable)
{
Gpu.Renderer.Rasterizer.EnableDepthTest();
}
else
{
Gpu.Renderer.Rasterizer.DisableDepthTest();
}
if (!Enable)
{
return;
}
GalComparisonOp Func = (GalComparisonOp)ReadRegister(NvGpuEngine3dReg.DepthTestFunction);
Gpu.Renderer.Rasterizer.SetDepthFunction(Func);
}
private void SetStencil()
{
int ClearStencil = ReadRegister(NvGpuEngine3dReg.ClearStencil);
Gpu.Renderer.Rasterizer.SetClearStencil(ClearStencil);
bool Enable = (ReadRegister(NvGpuEngine3dReg.StencilEnable) & 1) != 0;
if (Enable)
{
Gpu.Renderer.Rasterizer.EnableStencilTest();
}
else
{
Gpu.Renderer.Rasterizer.DisableStencilTest();
}
if (!Enable)
{
return;
}
void SetFaceStencil(
bool IsFrontFace,
NvGpuEngine3dReg Func,
NvGpuEngine3dReg FuncRef,
NvGpuEngine3dReg FuncMask,
NvGpuEngine3dReg OpFail,
NvGpuEngine3dReg OpZFail,
NvGpuEngine3dReg OpZPass,
NvGpuEngine3dReg Mask)
{
Gpu.Renderer.Rasterizer.SetStencilFunction(
IsFrontFace,
(GalComparisonOp)ReadRegister(Func),
ReadRegister(FuncRef),
ReadRegister(FuncMask));
Gpu.Renderer.Rasterizer.SetStencilOp(
IsFrontFace,
(GalStencilOp)ReadRegister(OpFail),
(GalStencilOp)ReadRegister(OpZFail),
(GalStencilOp)ReadRegister(OpZPass));
Gpu.Renderer.Rasterizer.SetStencilMask(IsFrontFace, ReadRegister(Mask));
}
SetFaceStencil(false,
NvGpuEngine3dReg.StencilBackFuncFunc,
NvGpuEngine3dReg.StencilBackFuncRef,
NvGpuEngine3dReg.StencilBackFuncMask,
NvGpuEngine3dReg.StencilBackOpFail,
NvGpuEngine3dReg.StencilBackOpZFail,
NvGpuEngine3dReg.StencilBackOpZPass,
NvGpuEngine3dReg.StencilBackMask);
SetFaceStencil(true,
NvGpuEngine3dReg.StencilFrontFuncFunc,
NvGpuEngine3dReg.StencilFrontFuncRef,
NvGpuEngine3dReg.StencilFrontFuncMask,
NvGpuEngine3dReg.StencilFrontOpFail,
NvGpuEngine3dReg.StencilFrontOpZFail,
NvGpuEngine3dReg.StencilFrontOpZPass,
NvGpuEngine3dReg.StencilFrontMask);
}
private void SetAlphaBlending()
@ -549,6 +676,11 @@ namespace Ryujinx.HLE.Gpu.Engines
ConstBuffers[Stage][Index].Size = ReadRegister(NvGpuEngine3dReg.ConstBufferSize);
}
private float GetFlipSign(NvGpuEngine3dReg Reg)
{
return MathF.Sign(ReadRegisterFloat(Reg));
}
private long MakeInt64From2xInt32(NvGpuEngine3dReg Reg)
{
return
@ -571,6 +703,11 @@ namespace Ryujinx.HLE.Gpu.Engines
return Registers[(int)Reg];
}
private float ReadRegisterFloat(NvGpuEngine3dReg Reg)
{
return BitConverter.Int32BitsToSingle(ReadRegister(Reg));
}
private void WriteRegister(NvGpuEngine3dReg Reg, int Value)
{
Registers[(int)Reg] = Value;