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SwRasterizer: Flip the vertex quaternions before clipping (if necessary).

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Subv 2017-06-11 11:55:35 -05:00 • committed by wwylele
parent 2a75837bc3
commit 73566ff7a9
3 changed files with 16 additions and 21 deletions
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24
src/video_core/swrasterizer/rasterizer.cpp
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@ -362,13 +362,6 @@ std::tuple<Math::Vec4<u8>, Math::Vec4<u8>> ComputeFragmentsColors(const Math::Qu
};
}
static bool AreQuaternionsOpposite(Math::Vec4<Pica::float24> qa, Math::Vec4<Pica::float24> qb) {
Math::Vec4f a{ qa.x.ToFloat32(), qa.y.ToFloat32(), qa.z.ToFloat32(), qa.w.ToFloat32() };
Math::Vec4f b{ qb.x.ToFloat32(), qb.y.ToFloat32(), qb.z.ToFloat32(), qb.w.ToFloat32() };
return (Math::Dot(a, b) < 0.f);
}
MICROPROFILE_DEFINE(GPU_Rasterization, "GPU", "Rasterization", MP_RGB(50, 50, 240));
/**
@ -462,15 +455,6 @@ static void ProcessTriangleInternal(const Vertex& v0, const Vertex& v1, const Ve
int bias2 =
IsRightSideOrFlatBottomEdge(vtxpos[2].xy(), vtxpos[0].xy(), vtxpos[1].xy()) ? -1 : 0;
// Flip the quaternions if they are opposite to prevent interpolating them over the wrong direction.
auto v1_quat = v1.quat;
auto v2_quat = v2.quat;
if (AreQuaternionsOpposite(v0.quat, v1.quat))
v1_quat = v1_quat * float24::FromFloat32(-1.0f);
if (AreQuaternionsOpposite(v0.quat, v2.quat))
v2_quat = v2_quat * float24::FromFloat32(-1.0f);
auto w_inverse = Math::MakeVec(v0.pos.w, v1.pos.w, v2.pos.w);
auto textures = regs.texturing.GetTextures();
@ -571,11 +555,11 @@ static void ProcessTriangleInternal(const Vertex& v0, const Vertex& v1, const Ve
Math::Quaternion<float> normquat{
{
GetInterpolatedAttribute(v0.quat.x, v1_quat.x, v2_quat.x).ToFloat32(),
GetInterpolatedAttribute(v0.quat.y, v1_quat.y, v2_quat.y).ToFloat32(),
GetInterpolatedAttribute(v0.quat.z, v1_quat.z, v2_quat.z).ToFloat32()
GetInterpolatedAttribute(v0.quat.x, v1.quat.x, v2.quat.x).ToFloat32(),
GetInterpolatedAttribute(v0.quat.y, v1.quat.y, v2.quat.y).ToFloat32(),
GetInterpolatedAttribute(v0.quat.z, v1.quat.z, v2.quat.z).ToFloat32()
},
GetInterpolatedAttribute(v0.quat.w, v1_quat.w, v2_quat.w).ToFloat32(),
GetInterpolatedAttribute(v0.quat.w, v1.quat.w, v2.quat.w).ToFloat32(),
};
Math::Vec3<float> fragment_position{