322 lines
12 KiB
C++
322 lines
12 KiB
C++
#pragma once
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#include <cstdint>
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#include <optional>
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#include <set>
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#include <string>
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#include <unordered_map>
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#include <vector>
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namespace mln {
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enum class RenderSegmentStrategy : uint8_t { Retained, Continuous };
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inline const char* renderSegmentStrategyText(RenderSegmentStrategy strategy) noexcept {
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return strategy == RenderSegmentStrategy::Retained ? "RETAINED" : "CONTINUOUS";
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}
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struct RenderSegmentDefinition {
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RenderSegmentStrategy strategy = RenderSegmentStrategy::Continuous;
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std::optional<std::string> startLayerId;
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bool operator==(const RenderSegmentDefinition&) const = default;
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};
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struct RenderSegmentPlan {
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uint32_t schemaVersion = 1;
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std::vector<RenderSegmentDefinition> segments;
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bool operator==(const RenderSegmentPlan&) const = default;
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};
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struct StyleLayerDiagnostics {
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int32_t layerIndex = -1;
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std::string layerId;
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std::string layerType;
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bool visible = false;
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std::optional<std::string> sourceId;
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std::optional<std::string> sourceLayer;
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bool operator==(const StyleLayerDiagnostics&) const = default;
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};
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// The style layer list is the single dependency source for diagnostics and rendering.
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struct RenderSegmentDependencies {
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std::vector<std::string> sourceIds;
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std::vector<std::string> globalPrerequisites;
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bool unknown = false;
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};
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inline RenderSegmentDependencies renderSegmentDependencies(const std::vector<StyleLayerDiagnostics>& layers,
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int32_t begin,
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int32_t endExclusive) {
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RenderSegmentDependencies result;
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if (begin < 0 || endExclusive < begin || endExclusive > static_cast<int32_t>(layers.size())) {
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result.unknown = true;
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return result;
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}
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std::set<std::string> sources;
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std::set<std::string> prerequisites;
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for (int32_t i = begin; i < endExclusive; ++i) {
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const auto& layer = layers[static_cast<std::size_t>(i)];
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if (layer.sourceId) sources.insert(*layer.sourceId);
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if (layer.layerType == "symbol") prerequisites.insert("symbol/glyph/image/placement");
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if (layer.layerType == "custom" || layer.layerType == "custom-drawable") result.unknown = true;
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if (layer.layerType != "background" && layer.layerType != "custom" &&
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layer.layerType != "custom-drawable" && !layer.sourceId) result.unknown = true;
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}
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result.sourceIds.assign(sources.begin(), sources.end());
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result.globalPrerequisites.assign(prerequisites.begin(), prerequisites.end());
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return result;
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}
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// Placement capability is a property of the style layer, not of this frame's
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// buckets or placementData. Invalid ranges fail closed.
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inline bool renderSegmentHasPlacementCapableLayer(const std::vector<StyleLayerDiagnostics>& layers,
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int32_t begin,
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int32_t endExclusive) {
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if (begin < 0 || endExclusive < begin || endExclusive > static_cast<int32_t>(layers.size())) return true;
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for (int32_t i = begin; i < endExclusive; ++i) {
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if (layers[static_cast<std::size_t>(i)].layerType == "symbol") return true;
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}
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return false;
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}
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inline bool renderSegmentPlacementGatePassed(bool placementCapable,
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bool placementChanged,
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float symbolFadeChange,
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bool placementTransitionActive) noexcept {
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return !placementCapable ||
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(!placementChanged && symbolFadeChange == 0.0f && !placementTransitionActive);
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}
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struct RenderSegmentGlobalLiveGates {
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bool retainedMode = false;
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bool has3D = false;
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bool debugOptions = false;
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bool continuousMode = false;
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bool spriteLoaded = false;
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bool globalResourcesReady = false;
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bool globalLightTransition = false;
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};
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inline const char* renderSegmentGlobalLiveFallbackReason(const RenderSegmentGlobalLiveGates& gates) noexcept {
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if (!gates.retainedMode) return "no-boundary";
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if (gates.has3D) return "3d";
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if (gates.debugOptions) return "debug-options";
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if (!gates.continuousMode) return "map-mode";
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if (!gates.spriteLoaded) return "sprite-not-loaded";
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if (!gates.globalResourcesReady) return "global-resource-not-ready";
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if (gates.globalLightTransition) return "global-light-transition";
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return "none";
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}
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class RenderSegmentRevisionBook {
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public:
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void advanceGlobal() noexcept { ++globalEpoch; }
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void advanceSource(const std::string& sourceId) { sourceRevisions[sourceId] = ++sequence; }
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std::optional<uint64_t> revisionFor(const RenderSegmentDependencies& dependencies) const {
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if (dependencies.unknown) return std::nullopt;
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uint64_t revision = globalEpoch;
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for (const auto& id : dependencies.sourceIds) {
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const auto found = sourceRevisions.find(id);
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if (found == sourceRevisions.end()) return std::nullopt;
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for (const unsigned char ch : id) revision = (revision ^ ch) * 1099511628211ULL;
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revision = (revision ^ found->second) * 1099511628211ULL;
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}
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return revision;
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}
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private:
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uint64_t globalEpoch = 1;
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uint64_t sequence = 1;
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// Retain tombstones: remove + recreate of the same ID always receives a newer identity.
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std::unordered_map<std::string, uint64_t> sourceRevisions;
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};
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struct RenderSegmentSourceStatus { bool loaded = false; bool fading = false; };
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struct RenderSegmentSourceAssessment {
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bool ready = false;
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bool stable = false;
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const char* reason = "unknown-dependency";
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};
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template <typename Lookup>
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RenderSegmentSourceAssessment assessRenderSegmentSources(const RenderSegmentDependencies& dependencies,
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Lookup lookup) {
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RenderSegmentSourceAssessment result;
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if (dependencies.unknown) return result;
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for (const auto& id : dependencies.sourceIds) {
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const std::optional<RenderSegmentSourceStatus> source = lookup(id);
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if (!source) { result.reason = "missing-source"; return result; }
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if (!source->loaded) { result.reason = "source-not-loaded"; return result; }
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if (source->fading) { result.ready = true; result.reason = "source-fading"; return result; }
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}
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result.ready = true;
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result.stable = true;
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result.reason = "none";
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return result;
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}
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struct RenderSourceReadinessDiagnostics {
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std::string sourceId;
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std::string sourceType;
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bool enabled = false;
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bool isLoaded = false;
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bool tileBacked = false;
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std::optional<uint32_t> tileCount;
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std::optional<uint32_t> incompleteTileCount;
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std::optional<uint32_t> loadedTileCount;
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bool hasFadingTiles = false;
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uint64_t lastSourceMutationSequence = 0;
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uint64_t lastTileChangedSequence = 0;
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uint64_t lastTileActionSequence = 0;
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std::string lastTileAction{"none"};
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std::string lastMutationReason{"none"};
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bool operator==(const RenderSourceReadinessDiagnostics&) const = default;
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};
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struct RenderMutationDiagnostics {
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uint64_t sequence = 0;
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uint64_t contentRevision = 0;
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std::string eventType{"none"};
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std::string reason{"none"};
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std::optional<std::string> sourceId;
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std::vector<uint32_t> affectedSegmentIndices;
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std::string dependencyScope{"none"};
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bool operator==(const RenderMutationDiagnostics&) const = default;
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};
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struct RendererReadinessDiagnostics {
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bool styleLoaded = false;
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bool imageManagerLoaded = false;
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bool renderOrchestratorLoaded = false;
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bool spriteLoaded = false;
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bool hasFadingTiles = false;
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uint64_t contentRevision = 0;
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std::vector<RenderSourceReadinessDiagnostics> sources;
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RenderMutationDiagnostics lastMutation;
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bool operator==(const RendererReadinessDiagnostics&) const = default;
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};
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struct RenderSegmentCacheDiagnostics {
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std::string cacheState{"disabled"};
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uint64_t contentRevision = 0;
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uint64_t build = 0;
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uint64_t reuse = 0;
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uint64_t invalidation = 0;
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uint64_t fallbackCount = 0;
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std::string finalDecision{"disabled"};
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std::string lastFallbackReason{"none"};
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bool sourceReady = false;
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bool sourceStable = false;
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bool supported = false;
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uint64_t sourceRevision = 0;
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std::string lastInvalidationReason{"none"};
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uint64_t textureCreate = 0;
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uint64_t compositeCreate = 0;
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uint64_t resourceRelease = 0;
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};
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struct RenderSegmentDiagnosticsEntry {
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uint32_t segmentIndex = 0;
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RenderSegmentStrategy strategy = RenderSegmentStrategy::Continuous;
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std::optional<std::string> configuredStartLayerId;
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int32_t beginIndex = -1;
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int32_t endExclusive = -1;
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std::optional<std::string> resolvedStartLayerId;
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std::optional<std::string> resolvedEndLayerId;
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std::vector<StyleLayerDiagnostics> layers;
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std::vector<std::string> dependentSourceIds;
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std::vector<std::string> unknownDependencies;
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bool placementCapable = false;
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bool placementGatePassed = false;
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std::string actualExecution{"not-rendered"};
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std::optional<RenderSegmentCacheDiagnostics> cache;
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};
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struct RenderSegmentDiagnostics {
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uint32_t schemaVersion = 1;
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bool enabled = true;
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bool configured = false;
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bool valid = false;
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std::string configSource{"unconfigured/legacy"};
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uint64_t configRevision = 0;
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uint64_t topologyRevision = 0;
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uint32_t styleLayerCount = 0;
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uint32_t segmentCount = 0;
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uint32_t retainedSegmentCount = 0;
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uint32_t continuousSegmentCount = 0;
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bool coverageComplete = false;
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bool fallback = false;
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std::string lastReason{"not-configured"};
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bool fastPathEligible = false;
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bool fastPathActive = false;
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std::string fastPathFallbackReason{"no-prepared-tree"};
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uint64_t fastPathHit = 0;
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uint64_t fastPathMiss = 0;
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uint64_t fullCpuFrame = 0;
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bool placementChanged = false;
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float symbolFadeChange = 0.0f;
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bool placementTransitionActive = false;
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bool crossSourceCollisions = true;
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std::string mainBufferExecutionMode{"not-rendered"};
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std::string globalLiveFallbackReason{"none"};
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bool styleLoaded = false;
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bool imageManagerLoaded = false;
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bool renderOrchestratorLoaded = false;
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bool spriteLoaded = false;
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bool hasFadingTiles = false;
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uint64_t contentRevision = 0;
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std::vector<RenderSourceReadinessDiagnostics> sources;
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RenderMutationDiagnostics lastMutation;
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std::vector<StyleLayerDiagnostics> styleLayers;
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std::vector<RenderSegmentDiagnosticsEntry> segments;
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};
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struct ResolvedRenderSegment {
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uint32_t segmentIndex = 0;
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RenderSegmentStrategy strategy = RenderSegmentStrategy::Continuous;
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std::optional<std::string> configuredStartLayerId;
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int32_t beginIndex = 0;
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int32_t endExclusive = 0;
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bool operator==(const ResolvedRenderSegment&) const = default;
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};
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struct ResolvedRenderSegmentPlan {
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bool configured = false;
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bool valid = false;
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std::string configSource{"unconfigured/legacy"};
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uint64_t configRevision = 0;
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std::string reason{"not-configured"};
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int32_t layerCount = 0;
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std::vector<ResolvedRenderSegment> segments;
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bool operator==(const ResolvedRenderSegmentPlan&) const = default;
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};
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// This is the main-buffer traversal used by the renderer. A failed retained range
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// is drawn live exactly once; neighboring cached ranges remain composites.
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template <typename Cached, typename Composite, typename Live>
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void visitRenderSegmentExecution(const ResolvedRenderSegmentPlan& plan,
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Cached cached,
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Composite composite,
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Live live) {
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if (!plan.valid) {
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live(0, plan.layerCount);
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return;
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}
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for (const auto& segment : plan.segments) {
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if (segment.strategy == RenderSegmentStrategy::Retained && cached(segment.segmentIndex)) {
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composite(segment.segmentIndex);
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} else {
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live(segment.beginIndex, segment.endExclusive);
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}
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}
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}
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} // namespace mln
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