ClipmapUpdater.h

#pragma once
 
#include "ClipmapUpsampler.h"
 
#include "Rendering/VertexFormat.h"
 
#include <vector>
 
namespace Cogs
{
  class RasterSource;
  struct RasterSourceSubscription;
  struct RasterTileRegion;
  struct RasterTile;
  struct RasterTileIdentifier;
 
  class NormalUpdater;
  class ClipmapUpdate;
  class ClipmapLevel;
  struct Extent;
 
  struct WorldOptions;
 
  class ClipmapUpdater
  {
  public:
    void initialize(IGraphicsDevice * device, NormalUpdater * normalUpdater);
    VertexFormatHandle initializeGeometry(IGraphicsDevice * device);
    void initializeSamplerStates(IGraphicsDevice * device);
    void initializeShaders(IGraphicsDevice * device, VertexFormatHandle positionFormat);
    void initializeStateObjects(IGraphicsDevice * device);
 
    void preloadTiles(ClipmapLevel & clipmapLevel, const Extent & extent);
 
    void setupRenderingState(RenderContext & renderContext);
 
    size_t applyNewData(RenderContext & context, const WorldOptions & worldOptions, RasterSourceSubscription & subscription, std::vector<ClipmapLevel> & levels, const size_t maxLevel);
 
    void requestTileResidency(ClipmapLevel & level);
 
    size_t updateRasterLevel(RenderContext & context, ClipmapUpdate * update, const size_t numUpdates);
    InputLayoutHandle updateLayoutHandle;
 
  private:
    void requestTileLoad(RasterSource * rasterSource,  ClipmapLevel & level, RasterTile * tile);
 
    void applyNewTiles(RenderContext & context,
      ClipmapLevel * level,
      const RasterTile ** tile,
      const size_t numTiles,
      std::vector<const RasterTile *> & updatedTiles,
      std::vector<ClipmapLevel *> & updatedLevels,
      std::vector<ClipmapUpdate> & normalUpdates);
 
    void applyIfNotLoaded(RenderContext & context, const WorldOptions & worldOptions, ClipmapLevel * level, const RasterTileIdentifier & tile, const size_t maxLevel);
 
    void renderTilesToLevelTexture(RenderContext & context,
      ClipmapLevel * level,
      const RasterTileRegion ** regions,
      const TextureHandle * tileTextures,
      const size_t numRegions);
 
    EffectHandle updateEffectHandle;
 
    BufferHandle levelBufferHandle;
    BufferHandle regionBufferHandle;
 
    ConstantBufferBindingHandle levelBufferBinding;
    ConstantBufferBindingHandle regionBufferBinding;
 
    VertexBufferHandle vertexBufferHandle;
    RasterizerStateHandle rasterizerStateHandle;
    DepthStencilStateHandle depthStencilStateHandle;
    
    SamplerStateHandle nearestClampStateHandle;
 
    TextureBindingHandle textureBinding;
    SamplerStateBindingHandle samplerStateBinding;
 
    NormalUpdater * normalUpdater;
    ClipmapUpsampler upsampler;
  };
}