src/dawn/replay/SurfaceDiscovery.h

// Copyright 2026 The Dawn & Tint Authors
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#ifndef SRC_DAWN_REPLAY_SURFACEDISCOVERY_H_
#define SRC_DAWN_REPLAY_SURFACEDISCOVERY_H_

#include <map>
#include <vector>

#include "dawn/replay/Replay.h"
#include "src/dawn/replay/CaptureWalker.h"

namespace dawn::replay {

class SurfaceDiscoveryVisitor : public RootCommandVisitor {
  public:
    using RootCommandVisitor::operator();
    VisitResult operator()(const schema::RootCommandSurfaceConfigureCmdData& data) override;
    VisitResult operator()(const schema::RootCommandSurfaceUnconfigureCmdData& data) override;
    VisitResult operator()(const schema::RootCommandSurfacePresentCmdData& data) override;
    VisitResult operator()(const schema::RootCommandSurfaceGetCurrentTextureCmdData& data) override;
    VisitResult operator()(const schema::RootCommandSetLabelCmdData& data) override;

    VisitResult operator()(const CreateResourceData& data) override;
    VisitResult operator()(const schema::RootCommandWriteBufferCmdData& data) override;
    VisitResult operator()(const schema::RootCommandWriteTextureCmdData& data) override;
    VisitResult operator()(const schema::RootCommandQueueSubmitCmdData& data) override;
    VisitResult operator()(const schema::RootCommandInitTextureCmdData& data) override;
    VisitResult operator()(const schema::RootCommandEndCmdData& data) override;

    ResourceVisitor& GetResourceVisitor() override;
    void SetContentReadHead(ReadHead* readHead) override;

    std::vector<schema::ObjectId> GetSurfaceIds() const;
    std::vector<SurfaceInfo> GetSurfaceInfos() const;

  private:
    struct NoopResourceVisitor : ResourceVisitor {
        using ResourceVisitor::operator();

        template <typename T>
        VisitResult SkipResourceData(const T& data) {
            if constexpr (std::is_same_v<T, CommandBufferData>) {
                return SkipEncoderCommands(data.readHead);
            } else if constexpr (std::is_same_v<T, RenderBundleData>) {
                return SkipRenderBundleCommands(data.readHead);
            } else {
                return VisitStatus::Continue;
            }
        }

#define DAWN_REPLAY_RESOURCE_VISITOR_OVERRIDE(ENUM, TYPE) \
    VisitResult operator()(const TYPE& data) override { return SkipResourceData(data); }
        DAWN_REPLAY_RESOURCE_DATA_MAP(DAWN_REPLAY_RESOURCE_VISITOR_OVERRIDE)
#undef DAWN_REPLAY_RESOURCE_VISITOR_OVERRIDE
        VisitResult operator()(const std::monostate&) override { return VisitStatus::Continue; }
    };

    NoopResourceVisitor mResourceVisitor;
    std::map<schema::ObjectId, SurfaceInfo> mSurfaceInfos;
};

}  // namespace dawn::replay

#endif  // SRC_DAWN_REPLAY_SURFACEDISCOVERY_H_