decalcontext.h

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#pragma once
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
#include "graphics/graphicscontext.h"
namespace Decals
{
 
class DecalContext : public Graphics::GraphicsContext
{
    __DeclareContext();
public:
    DecalContext();
    virtual ~DecalContext();

    static void Create();
    static void Discard();

    static void SetupDecalPBR(
        const Graphics::GraphicsEntityId id, 
        const Math::mat4 transform,
        const Resources::ResourceId albedo, 
        const Resources::ResourceId normal, 
        const Resources::ResourceId material,
        const Graphics::StageMask stageMask = Graphics::PRIMARY_STAGE_MASK
    );
    static void SetupDecalEmissive(
        const Graphics::GraphicsEntityId id,
        const Math::mat4 transform,
        const Resources::ResourceId emissive,
        const Graphics::StageMask stageMask = Graphics::PRIMARY_STAGE_MASK
    );

    static void SetAlbedoTexture(const Graphics::GraphicsEntityId id, const Resources::ResourceId albedo);
    static void SetNormalTexture(const Graphics::GraphicsEntityId id, const Resources::ResourceId normal);
    static void SetMaterialTexture(const Graphics::GraphicsEntityId id, const Resources::ResourceId material);
    static void SetEmissiveTexture(const Graphics::GraphicsEntityId id, const Resources::ResourceId emissive);

    static void SetTransform(const Graphics::GraphicsEntityId id, const Math::mat4 transform);
    static Math::mat4 GetTransform(const Graphics::GraphicsEntityId id);

    static void UpdateDecals(const Graphics::FrameContext& ctx);
 
#ifndef PUBLIC_BUILD
    static void OnRenderDebug(uint32_t flags);
#endif
 
private:
 
    enum DecalType
    {
        PBRDecal,
        EmissiveDecal
    };
    enum
    {
        Decal_Transform,
        Decal_Type,
        Decal_TypedId,
        Decal_StageMask
    };
    typedef Ids::IdAllocator<
        Math::mat4,
        DecalType,
        Ids::Id32,
        Graphics::StageMask
    > GenericDecalAllocator;
    static GenericDecalAllocator genericDecalAllocator;
 
    enum
    {
        DecalPBR_Albedo,
        DecalPBR_Normal,
        DecalPBR_Material,
    };
    typedef Ids::IdAllocator<
        Resources::ResourceId,
        Resources::ResourceId,
        Resources::ResourceId
    > PBRDecalAllocator;
    static PBRDecalAllocator pbrDecalAllocator;
 
    enum
    {
        DecalEmissive_Emissive,
    };
    typedef Ids::IdAllocator<
        Resources::ResourceId
    > EmissiveDecalAllocator;
    static EmissiveDecalAllocator emissiveDecalAllocator;

    static Graphics::ContextEntityId Alloc();
    static void Dealloc(Graphics::ContextEntityId id);
 
};
} // namespace Decals