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Use client composition for dGPU rendered layers #124

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Use client composition for dGPU rendered layers #124

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9 changes: 8 additions & 1 deletion backend/Backend.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -123,7 +123,14 @@ bool Backend::IsClientLayer(HwcDisplay *display, HwcLayer *layer) {
!layer->IsLayerUsableAsDevice() ||
display->color_transform_hint() != HAL_COLOR_TRANSFORM_IDENTITY ||
(layer->GetLayerData().pi.RequireScalingOrPhasing() &&
display->GetHwc2()->GetResMan().ForcedScalingWithGpu()) ||
display->GetHwc2()->GetResMan().ForcedScalingWithGpu()) ||
// Optimize performance in multi-plane mode when use dGPU rendering
// and iGPU display: use client composition to avoid blitting multiple
// layers to shadow buffers.
(intel_dgpu_fd() >= 0 &&
!display->GetPipe().crtc->Get()->GetAllowP2P() &&
display->GetPipe().GetUsablePlanes().size() > 1 &&
!IsVideoLayer(layer)) ||
(!display->IsInHeadlessMode() && display->GetPipe().device->IsIvshmDev());
}

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