YiRenderSystem.h

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// © You i Labs Inc. 2000-2018. All rights reserved.
#ifndef _YI_RENDER_SYSTEM_H_
#define _YI_RENDER_SYSTEM_H_

#include "framework/YiPredef.h"

class CYIRenderSystemPriv;
class CYICapabilities;
class CYIMutex;
class IYIRenderer;
class IYIMaterialFactory;
class CYIMeshFactory;
class IYIBufferFactory;

class CYIRenderSystem
{
public:

    enum YI_BLEND_MODE
    {
        YI_NONE = 0,           
        YI_ALPHA_PREMULT = 1,  
        YI_ALPHA_ERASE = 2,    
        YI_ALPHA_POSTMULT = 3, 
        YI_ADDITIVE = 4,       
        YI_MASK = 5,           
        YI_MASK_APPLY = 6,     
        YI_EFFECT_APPLY = 7,   
        /*
         * The following section is based of HTML5 CanvasRenderingContext2D.globalCompositeOperation
         * https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/globalCompositeOperation
         */

        YI_SOURCE_OVER = YI_ALPHA_PREMULT, 
        YI_SOURCE_IN = 8,                  
        YI_SOURCE_OUT = 9,                 
        YI_SOURCE_ATOP = 10,               
        YI_DESTINATION_OVER = 11,          
        YI_DESTINATION_IN = 12,            
        YI_DESTINATION_OUT = 13,           
        YI_DESTINATION_ATOP = 14,          
        YI_LIGHTER = YI_ADDITIVE,          
        YI_COPY = 15,                      
        YI_XOR = 16,                       
        YI_BLEND_MODE_COUNT
    };

    enum YI_DEPTH_TEST
    {
        YI_NEVER,           
        YI_LESS,            
        YI_EQUAL,           
        YI_LESS_EQUAL,      
        YI_GREATER,         
        YI_NOT_EQUAL,       
        YI_GREATER_EQUAL,   
        YI_ALWAYS,          
        YI_DEPTH_TEST_COUNT
    };

    enum YI_STENCIL_MODE
    {
        YI_STENCIL_OFF,                  
        YI_GLOBAL_MASK_SET,              
        YI_GLOBAL_MASK_CLEAR,            
        YI_STENCIL_CAPTURE,              
        YI_STENCIL_CAPTURE_NO_OVERLAP,   
        YI_STENCIL_MASK_INNER,           
        YI_STENCIL_MASK_OUTER,           
        YI_STENCIL_MASK_INNER_AND_RESET, 
        YI_STENCIL_MASK_OUTER_AND_RESET, 
        YI_STENCIL_MODE_COUNT
    };

    enum YI_WINDING
    {
        YI_CLOCKWISE,           
        YI_COUNTER_CLOCKWISE,   
        YI_WINDING_COUNT
    };

    enum YI_CULL_FACE
    {
        YI_FRONT,           
        YI_BACK,            
        YI_CULL_NONE,       
        YI_CULL_FACE_COUNT
    };

    static CYIRenderSystem *GetInstance();

    virtual ~CYIRenderSystem();

    void            SetScreenFrameBufferBinding();

    const CYICapabilities  *GetCapabilities() const;

    IYIMaterialFactory      *GetMaterialFactory();

    CYIMeshFactory          *GetMeshFactory();

    IYIBufferFactory        *GetBufferFactory();

    IYIRenderer             *GetSceneRenderer();


private:
    CYIRenderSystem();

    static CYIMutex         m_RenderSystemMutex;

    CYIRenderSystemPriv    *m_pPriv;

    YI_DISALLOW_COPY_AND_ASSIGN(CYIRenderSystem)
};

#endif // _YI_RENDER_SYSTEM_H_