diff options
| -rw-r--r-- | drmhwctwo.cpp | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drmhwctwo.cpp b/drmhwctwo.cpp index 8743b14..8338f59 100644 --- a/drmhwctwo.cpp +++ b/drmhwctwo.cpp @@ -910,9 +910,14 @@ HWC2::Error DrmHwcTwo::HwcDisplay::ValidateDisplay(uint32_t *num_types, if (avail_planes < layers_.size()) avail_planes--; - std::map<uint32_t, DrmHwcTwo::HwcLayer *> z_map; + std::map<uint32_t, DrmHwcTwo::HwcLayer *> z_map, z_map_tmp; + uint32_t z_index = 0; + // First create a map of layers and z_order values for (std::pair<const hwc2_layer_t, DrmHwcTwo::HwcLayer> &l : layers_) - z_map.emplace(std::make_pair(l.second.z_order(), &l.second)); + z_map_tmp.emplace(std::make_pair(l.second.z_order(), &l.second)); + // normalise the map so that the lowest z_order layer has key 0 + for (std::pair<const uint32_t, DrmHwcTwo::HwcLayer *> &l : z_map_tmp) + z_map.emplace(std::make_pair(z_index++, l.second)); uint32_t total_pixops = CalcPixOps(z_map, 0, z_map.size()), gpu_pixops = 0; |