Hey Rob, On Fri, May 18, 2018 at 12:08 AM, Rob Herring <r...@kernel.org> wrote: > In order to assign planes to layers in ValidateDisplay, testing > compositing with a DRM atomic modeset test is needed as PresentDisplay > is too late. This means most of PresentDisplay needs to be run from > ValidateDisplay, so refactor PresentDisplay and plumb a test flag down > the stack. > > Signed-off-by: Rob Herring <r...@kernel.org> > --- > Based on my GL comp removal work. Adding atomic test path turned out to > be easier than using the Planner directly. > > drmdisplaycompositor.cpp | 4 +- > drmdisplaycompositor.h | 2 +- > drmhwctwo.cpp | 79 ++++++++++++++++++++++++++++++++++------ > drmhwctwo.h | 1 + > 4 files changed, 73 insertions(+), 13 deletions(-) > > diff --git a/drmdisplaycompositor.cpp b/drmdisplaycompositor.cpp > index 2f9f6c6772da..ceee6b1a4bd6 100644 > --- a/drmdisplaycompositor.cpp > +++ b/drmdisplaycompositor.cpp > @@ -469,7 +469,7 @@ void DrmDisplayCompositor::ApplyFrame( > } > > int DrmDisplayCompositor::ApplyComposition( > - std::unique_ptr<DrmDisplayComposition> composition) { > + std::unique_ptr<DrmDisplayComposition> composition, bool test) {
Since ApplyComposition just calls CommitFrame which already has test support, can we reuse that for a TestComposition function? > int ret = 0; > switch (composition->type()) { > case DRM_COMPOSITION_TYPE_FRAME: > @@ -481,6 +481,8 @@ int DrmDisplayCompositor::ApplyComposition( > ALOGE("Commit test failed for display %d, FIXME", display_); > return ret; > } > + if (test) > + return 0; Then we could also drop this hunk. > } > > ApplyFrame(std::move(composition), ret); > diff --git a/drmdisplaycompositor.h b/drmdisplaycompositor.h > index ed46873c3409..7c5ebb005dc4 100644 > --- a/drmdisplaycompositor.h > +++ b/drmdisplaycompositor.h > @@ -43,7 +43,7 @@ class DrmDisplayCompositor { > int Init(DrmResources *drm, int display); > > std::unique_ptr<DrmDisplayComposition> CreateComposition() const; > - int ApplyComposition(std::unique_ptr<DrmDisplayComposition> composition); > + int ApplyComposition(std::unique_ptr<DrmDisplayComposition> composition, > bool test); And this one. > int Composite(); > void Dump(std::ostringstream *out) const; > > diff --git a/drmhwctwo.cpp b/drmhwctwo.cpp > index deaf14363e8c..19f73e721154 100644 > --- a/drmhwctwo.cpp > +++ b/drmhwctwo.cpp > @@ -480,8 +480,7 @@ void DrmHwcTwo::HwcDisplay::AddFenceToRetireFence(int fd) > { > } > } > > -HWC2::Error DrmHwcTwo::HwcDisplay::PresentDisplay(int32_t *retire_fence) { > - supported(__func__); > +HWC2::Error DrmHwcTwo::HwcDisplay::CreateComposition(bool test) { This is called CreateComposition, but it also tests and even commits. If this only sets up the DrmDisplayComposition, we could just have the test and commit in Validate/Present respectively and drop the flag. Unfortunately it also uses and mutates the layer state, and moving that into Present/Validate from here looks more difficult. > std::vector<DrmCompositionDisplayLayersMap> layers_map; > layers_map.emplace_back(); > DrmCompositionDisplayLayersMap &map = layers_map.back(); > @@ -494,7 +493,13 @@ HWC2::Error > DrmHwcTwo::HwcDisplay::PresentDisplay(int32_t *retire_fence) { > uint32_t client_z_order = 0; > std::map<uint32_t, DrmHwcTwo::HwcLayer *> z_map; > for (std::pair<const hwc2_layer_t, DrmHwcTwo::HwcLayer> &l : layers_) { > - switch (l.second.validated_type()) { > + HWC2::Composition comp_type; > + if (test) > + comp_type = l.second.sf_type(); > + else > + comp_type = l.second.validated_type(); > + > + switch (comp_type) { > case HWC2::Composition::Device: > z_map.emplace(std::make_pair(l.second.z_order(), &l.second)); > break; > @@ -510,6 +515,10 @@ HWC2::Error > DrmHwcTwo::HwcDisplay::PresentDisplay(int32_t *retire_fence) { > if (use_client_layer) > z_map.emplace(std::make_pair(client_z_order, &client_layer_)); > > + if (z_map.empty()) > + return HWC2::Error::BadLayer; > + > + Extra newline. > // now that they're ordered by z, add them to the composition > for (std::pair<const uint32_t, DrmHwcTwo::HwcLayer *> &l : z_map) { > DrmHwcLayer layer; > @@ -521,10 +530,6 @@ HWC2::Error > DrmHwcTwo::HwcDisplay::PresentDisplay(int32_t *retire_fence) { > } > map.layers.emplace_back(std::move(layer)); > } > - if (map.layers.empty()) { > - *retire_fence = -1; > - return HWC2::Error::None; > - } > > std::unique_ptr<DrmDisplayComposition> composition = > compositor_.CreateComposition(); > @@ -555,13 +560,29 @@ HWC2::Error > DrmHwcTwo::HwcDisplay::PresentDisplay(int32_t *retire_fence) { > i = overlay_planes.erase(i); > } > > - AddFenceToRetireFence(composition->take_out_fence()); > + if (!test) > + AddFenceToRetireFence(composition->take_out_fence()); > > - ret = compositor_.ApplyComposition(std::move(composition)); > + ret = compositor_.ApplyComposition(std::move(composition), test); > if (ret) { > ALOGE("Failed to apply the frame composition ret=%d", ret); > return HWC2::Error::BadParameter; > } > + return HWC2::Error::None; > +} > + > +HWC2::Error DrmHwcTwo::HwcDisplay::PresentDisplay(int32_t *retire_fence) { > + supported(__func__); > + HWC2::Error ret; > + > + ret = CreateComposition(false); > + if (ret == HWC2::Error::BadLayer) { > + // Can we really have no client or device layers? > + *retire_fence = -1; > + return HWC2::Error::None; > + } > + if (ret != HWC2::Error::None) > + return ret; > > // The retire fence returned here is for the last frame, so return it and > // promote the next retire fence > @@ -586,7 +607,7 @@ HWC2::Error > DrmHwcTwo::HwcDisplay::SetActiveConfig(hwc2_config_t config) { > compositor_.CreateComposition(); > composition->Init(drm_, crtc_, importer_.get(), planner_.get(), frame_no_); > int ret = composition->SetDisplayMode(*mode); > - ret = compositor_.ApplyComposition(std::move(composition)); > + ret = compositor_.ApplyComposition(std::move(composition), false); > if (ret) { > ALOGE("Failed to queue dpms composition on %d", ret); > return HWC2::Error::BadConfig; > @@ -666,7 +687,7 @@ HWC2::Error DrmHwcTwo::HwcDisplay::SetPowerMode(int32_t > mode_in) { > compositor_.CreateComposition(); > composition->Init(drm_, crtc_, importer_.get(), planner_.get(), frame_no_); > composition->SetDpmsMode(dpms_value); > - int ret = compositor_.ApplyComposition(std::move(composition)); > + int ret = compositor_.ApplyComposition(std::move(composition), false); With a TestComposition we can drop the two hunks here. > if (ret) { > ALOGE("Failed to apply the dpms composition ret=%d", ret); > return HWC2::Error::BadParameter; > @@ -683,11 +704,47 @@ HWC2::Error > DrmHwcTwo::HwcDisplay::SetVsyncEnabled(int32_t enabled) { > HWC2::Error DrmHwcTwo::HwcDisplay::ValidateDisplay(uint32_t *num_types, > uint32_t *num_requests) { > supported(__func__); > + size_t plane_count = 0; > *num_types = 0; > *num_requests = 0; > + size_t avail_planes = primary_planes_.size() + overlay_planes_.size(); > + > + HWC2::Error ret; > + > + for (std::pair<const hwc2_layer_t, DrmHwcTwo::HwcLayer> &l : layers_) > + l.second.set_validated_type(HWC2::Composition::Invalid); > + > + ret = CreateComposition(true); > + if (ret != HWC2::Error::None) > + // Assume the test failed due to overlay planes > + avail_planes = 1; > + > + std::map<uint32_t, DrmHwcTwo::HwcLayer *> z_map; > + for (std::pair<const hwc2_layer_t, DrmHwcTwo::HwcLayer> &l : layers_) { > + if (l.second.sf_type() == HWC2::Composition::Device) > + z_map.emplace(std::make_pair(l.second.z_order(), &l.second)); > + } > + > + /* > + * If more layers then planes, save one plane > + * for client composited layers > + */ > + if (avail_planes < layers_.size()) > + avail_planes--; > + > + for (std::pair<const uint32_t, DrmHwcTwo::HwcLayer *> &l : z_map) { > + if (!avail_planes--) > + break; > + l.second->set_validated_type(HWC2::Composition::Device); > + } > + > for (std::pair<const hwc2_layer_t, DrmHwcTwo::HwcLayer> &l : layers_) { > DrmHwcTwo::HwcLayer &layer = l.second; > switch (layer.sf_type()) { > + case HWC2::Composition::Device: > + if (layer.validated_type() == HWC2::Composition::Device) > + break; > + // fall thru > case HWC2::Composition::SolidColor: > case HWC2::Composition::Cursor: > case HWC2::Composition::Sideband: > diff --git a/drmhwctwo.h b/drmhwctwo.h > index 0490e2ac7f85..bbf55d9a08bc 100644 > --- a/drmhwctwo.h > +++ b/drmhwctwo.h > @@ -171,6 +171,7 @@ class DrmHwcTwo : public hwc2_device_t { > float *min_luminance); > HWC2::Error GetReleaseFences(uint32_t *num_elements, hwc2_layer_t > *layers, > int32_t *fences); > + HWC2::Error CreateComposition(bool test); This is more of a private function than a HWC2 hook. > HWC2::Error PresentDisplay(int32_t *retire_fence); > HWC2::Error SetActiveConfig(hwc2_config_t config); > HWC2::Error SetClientTarget(buffer_handle_t target, int32_t > acquire_fence, > -- > 2.17.0 > Thanks for working on this! Fixup for the nits above: https://gitlab.freedesktop.org/stschake/drm-hwcomposer/commit/3aa0eb88 Took a short look at isolating the composition, too, but it's pretty interwoven with the layer state. Regards, Stefan _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel