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Scissor test implementation. Partially stubbed until geometry shaders… (#556)

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* Scissor test implementation. Partially stubbed until geometry shaders are fixed

* Apply to all viewports when geometry shaders are disabled.

* Also apply enable cap to all viewports when geometry shaders are disabled

* Added fixme as per suggestion

Co-Authored-By: BaronKiko <BaronKiko@users.noreply.github.com>

* Apparently no alignment needed here.

* Comment on new line

* Correct height calculation
This commit is contained in:
BaronKiko 2019-01-13 21:26:42 +00:00 • committed by emmauss
parent 8406ec6272
commit 0cd5ba03fe
4 changed files with 103 additions and 0 deletions
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36
Ryujinx.Graphics/Graphics3d/NvGpuEngine3d.cs
View file

@ -24,6 +24,9 @@ namespace Ryujinx.Graphics.Graphics3d
private ConstBuffer[][] ConstBuffers;
// Height kept for flipping y axis
private int ViewportHeight = 0;
private int CurrentInstance = 0;
public NvGpuEngine3d(NvGpu Gpu)
@ -97,6 +100,7 @@ namespace Ryujinx.Graphics.Graphics3d
SetCullFace(State);
SetDepth(State);
SetStencil(State);
SetScissor(State);
SetBlending(State);
SetColorMask(State);
SetPrimitiveRestart(State);
@ -208,6 +212,8 @@ namespace Ryujinx.Graphics.Graphics3d
Gpu.ResourceManager.SendColorBuffer(Vmm, Key, FbIndex, Image);
ViewportHeight = VpH;
Gpu.Renderer.RenderTarget.SetViewport(FbIndex, VpX, VpY, VpW, VpH);
}
@ -407,6 +413,36 @@ namespace Ryujinx.Graphics.Graphics3d
}
}
private void SetScissor(GalPipelineState State)
{
// FIXME: Stubbed, only the first scissor test is valid without a geometry shader loaded. At time of writing geometry shaders are also stubbed.
// Once geometry shaders are fixed it should be equal to GalPipelineState.RenderTargetCount when shader loaded, otherwise equal to 1
State.ScissorTestCount = 1;
for (int Index = 0; Index < GalPipelineState.RenderTargetsCount; Index++)
{
State.ScissorTestEnabled[Index] = ReadRegisterBool(NvGpuEngine3dReg.ScissorEnable + Index * 4);
if (State.ScissorTestEnabled[Index])
{
uint ScissorHorizontal = (uint)ReadRegister(NvGpuEngine3dReg.ScissorHorizontal + Index * 4);
uint ScissorVertical = (uint)ReadRegister(NvGpuEngine3dReg.ScissorVertical + Index * 4);
State.ScissorTestX[Index] = (int)((ScissorHorizontal & 0xFFFF) * State.FlipX); // X, lower 16 bits
State.ScissorTestWidth[Index] = (int)((ScissorHorizontal >> 16) * State.FlipX) - State.ScissorTestX[Index]; // Width, right side is upper 16 bits
State.ScissorTestY[Index] = (int)((ScissorVertical & 0xFFFF)); // Y, lower 16 bits
State.ScissorTestHeight[Index] = (int)((ScissorVertical >> 16)) - State.ScissorTestY[Index]; // Height, top side is upper 16 bits
// Y coordinates may have to be flipped
if ((int)State.FlipY == -1)
{
State.ScissorTestY[Index] = ViewportHeight - State.ScissorTestY[Index] - State.ScissorTestHeight[Index];
}
}
}
}
private void SetBlending(GalPipelineState State)
{
bool BlendIndependent = ReadRegisterBool(NvGpuEngine3dReg.BlendIndependent);