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perf: Render ground-aligned particles without sorting #2831

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perf: Render ground-aligned particles without sorting #2831

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8 changes: 7 additions & 1 deletion Core/Libraries/Source/WWVegas/WW3D2/pointgr.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -926,8 +926,14 @@ void PointGroupClass::Render(RenderInfoClass &rinfo)
DX8Wrapper::Set_Shader(Shader);
DX8Wrapper::Set_Texture(0,Texture);

// TheSuperHackers @perf stephanmeesters 27/06/2026
// Enable sorting if the primitives are translucent and alpha testing is not enabled.
const bool sort = (Shader.Get_Dst_Blend_Func() != ShaderClass::DSTBLEND_ZERO) && (Shader.Get_Alpha_Test() == ShaderClass::ALPHATEST_DISABLE) && (WW3D::Is_Sorting_Enabled());
// However, do not apply sorting for ground-aligned (i.e. non-billboard) particles.
// This is for performance reasons and because ground-aligned particles do not generally benefit from back-to-front sorting.
const bool sort = Billboard &&
(Shader.Get_Dst_Blend_Func() != ShaderClass::DSTBLEND_ZERO) &&
(Shader.Get_Alpha_Test() == ShaderClass::ALPHATEST_DISABLE) &&
(WW3D::Is_Sorting_Enabled());

IndexBufferClass *indexbuffer;
int verticesperprimitive;/// lorenzen fixed
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