$#include "Renderer.h"

/// High-level rendering subsystem. Manages drawing of 3D views.
class Renderer
{
public:
    /// Set number of backbuffer viewports to render.
    void SetNumViewports(unsigned num);
    /// Set a backbuffer viewport.
    void SetViewport(unsigned index, Viewport* viewport);
    /// Set default renderpath.
    void SetDefaultRenderPath(RenderPath* renderPath);
    /// Set default renderpath from an XML file.
    void SetDefaultRenderPath(XMLFile* file);
    /// Set specular lighting on/off.
    void SetSpecularLighting(bool enable);
    /// Set texture anisotropy.
    void SetTextureAnisotropy(int level);
    /// Set texture filtering.
    void SetTextureFilterMode(TextureFilterMode mode);
    /// Set texture quality level.
    void SetTextureQuality(int quality);
    /// Set material quality level.
    void SetMaterialQuality(int quality);
    /// Set shadows on/off.
    void SetDrawShadows(bool enable);
    /// Set shadow map resolution.
    void SetShadowMapSize(int size);
    /// Set shadow quality (amount of samples and bit depth.)
    void SetShadowQuality(int quality);
    /// Set reuse of shadow maps. Default is true. If disabled, also transparent geometry can be shadowed.
    void SetReuseShadowMaps(bool enable);
    /// Set maximum number of shadow maps created for one resolution. Only has effect if reuse of shadow maps is disabled.
    void SetMaxShadowMaps(int shadowMaps);
    /// Set maximum number of directional light shadow map cascades. Affects the size of directional light shadow maps.
    void SetMaxShadowCascades(int cascades);
    /// Set dynamic instancing on/off.
    void SetDynamicInstancing(bool enable);
    /// Set minimum number of instances required in a batch group to render as instanced.
    void SetMinInstances(int instances);
    /// Set maximum number of triangles per object for instancing.
    void SetMaxInstanceTriangles(int triangles);
    /// Set maximum number of sorted instances per batch group. If exceeded, instances are rendered unsorted.
    void SetMaxSortedInstances(int instances);
    /// Set maximum number of occluder trianges.
    void SetMaxOccluderTriangles(int triangles);
    /// Set occluder buffer width.
    void SetOcclusionBufferSize(int size);
    /// Set required screen size (1.0 = full screen) for occluders.
    void SetOccluderSizeThreshold(float screenSize);
    /// Force reload of shaders.
    void ReloadShaders();
    
    /// Return number of backbuffer viewports.
    unsigned GetNumViewports() const { return viewports_.Size(); }
    /// Return backbuffer viewport by index.
    Viewport* GetViewport(unsigned index) const;
    /// Return default renderpath.
    RenderPath* GetDefaultRenderPath() const;
    /// Return whether specular lighting is enabled.
    bool GetSpecularLighting() const { return specularLighting_; }
    /// Return whether drawing shadows is enabled.
    bool GetDrawShadows() const { return drawShadows_; }
    /// Return texture anisotropy.
    int GetTextureAnisotropy() const { return textureAnisotropy_; }
    /// Return texture filtering.
    TextureFilterMode GetTextureFilterMode() const { return textureFilterMode_; }
    /// Return texture quality level.
    int GetTextureQuality() const { return textureQuality_; }
    /// Return material quality level.
    int GetMaterialQuality() const { return materialQuality_; }
    /// Return shadow map resolution.
    int GetShadowMapSize() const { return shadowMapSize_; }
    /// Return shadow quality.
    int GetShadowQuality() const { return shadowQuality_; }
    /// Return whether shadow maps are reused.
    bool GetReuseShadowMaps() const { return reuseShadowMaps_; }
    /// Return maximum number of shadow maps per resolution.
    int GetMaxShadowMaps() const { return maxShadowMaps_; }
    /// Return maximum number of directional light shadow map cascades.
    int GetMaxShadowCascades() const { return maxShadowCascades_; }
    /// Return whether dynamic instancing is in use.
    bool GetDynamicInstancing() const { return dynamicInstancing_; }
    /// Return minimum number of instances required in a batch group to render as instanced.
    int GetMinInstances() const { return minInstances_; }
    /// Return maximum number of triangles per object for instancing.
    int GetMaxInstanceTriangles() const { return maxInstanceTriangles_; }
    /// Return maximum number of sorted instances per batch group.
    int GetMaxSortedInstances() const { return maxSortedInstances_; }
    /// Return maximum number of occluder triangles.
    int GetMaxOccluderTriangles() const { return maxOccluderTriangles_; }
    /// Return occlusion buffer width.
    int GetOcclusionBufferSize() const { return occlusionBufferSize_; }
    /// Return occluder screen size threshold.
    float GetOccluderSizeThreshold() const { return occluderSizeThreshold_; }
    /// Return number of views rendered.
    unsigned GetNumViews() const { return numViews_; }
    /// Return number of primitives rendered.
    unsigned GetNumPrimitives() const { return numPrimitives_; }
    /// Return number of batches rendered.
    unsigned GetNumBatches() const { return numBatches_; }
    /// Return number of geometries rendered.
    unsigned GetNumGeometries(bool allViews = false) const;
    /// Return number of lights rendered.
    unsigned GetNumLights(bool allViews = false) const;
    /// Return number of shadow maps rendered.
    unsigned GetNumShadowMaps(bool allViews = false) const;
    /// Return number of occluders rendered.
    unsigned GetNumOccluders(bool allViews = false) const;
    /// Return the default zone.
    Zone* GetDefaultZone() const { return defaultZone_; }
    /// Return the directional light for fullscreen quad rendering.
    Light* GetQuadDirLight() const { return quadDirLight_; }
    /// Return the default material.
    Material* GetDefaultMaterial() const { return defaultMaterial_; }
    /// Return the default range attenuation texture.
    Texture2D* GetDefaultLightRamp() const { return defaultLightRamp_; }
    /// Return the default spotlight attenuation texture.
    Texture2D* GetDefaultLightSpot() const { return defaultLightSpot_; }
    /// Return the shadowed pointlight face selection cube map.
    TextureCube* GetFaceSelectCubeMap() const { return faceSelectCubeMap_; }
    /// Return the shadowed pointlight indirection cube map.
    TextureCube* GetIndirectionCubeMap() const { return indirectionCubeMap_; }
    /// Return the instancing vertex buffer
    VertexBuffer* GetInstancingBuffer() const { return dynamicInstancing_ ? instancingBuffer_ : (VertexBuffer*)0; }
    /// Return a vertex shader by name.
    ShaderVariation* GetVertexShader(const String& name, bool checkExists = false) const;
    /// Return a pixel shader by name.
    ShaderVariation* GetPixelShader(const String& name, bool checkExists = false) const;
    /// Return the stencil vertex shader.
    ShaderVariation* GetStencilVS() const { return stencilVS_; }
    /// Return the stencil pixel shader.
    ShaderVariation* GetStencilPS() const { return stencilPS_; }
    /// Return the frame update parameters.
    const FrameInfo& GetFrameInfo() { return frame_; }
    
    /// Add debug geometry to the debug renderer.
    void DrawDebugGeometry(bool depthTest);
};