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////////////////////////////////////////////////////////////////////////////////////////////////////

#ifndef __TEXTURE_H__

#define __TEXTURE_H__

#include "compute_types.h"

#include <OpenGL/gl.h>

class Texture

{

public:

    Texture();

    ~Texture();

    void enable(GLenum eUnit = GL_TEXTURE0);

    void update();

    void disable();

    void render();

    bool loadCubeMap(

        const char* acFilenames[6],

        GLenum eTarget = GL_TEXTURE_CUBE_MAP, 

        GLenum eInternal = GL_RGB8, 

        GLenum eFormat = GL_RGB, 

        GLenum eDataType = GL_UNSIGNED_BYTE, 

        GLenum eFilterMode = GL_LINEAR, 

        GLenum eWrapMode = GL_REPEAT);

    bool load(

        const char* acFilename, 

        GLenum eTarget = GL_TEXTURE_2D, 

        GLenum eInternal = GL_RGB8, 

        GLenum eFormat = GL_RGB, 

        GLenum eDataType = GL_UNSIGNED_BYTE, 

        GLenum eFilterMode = GL_LINEAR, 

        GLenum eWrapMode = GL_REPEAT, 

        bool bUseMipMaps = true);

    bool setup(

        uint uiWidth, 

        uint uiHeight, 

        GLenum eTarget,           // = GL_TEXTURE_2D,

        GLenum eInternal,         // = GL_RGBA_FLOAT32_APPLE, 

        GLenum eFormat,           // = GL_RGBA, 

        GLenum eDataType,         // = GL_FLOAT,

        bool bUseMipMaps = false,

        void* pvData = 0);   

    bool setup(

        uint uiWidth, 

        uint uiHeight,

        uint uiDepth, 

        GLenum eTarget,           // = GL_TEXTURE_2D,

        GLenum eInternal,         // = GL_RGBA_FLOAT32_APPLE, 

        GLenum eFormat,           // = GL_RGBA, 

        GLenum eDataType,         // = GL_FLOAT

        bool bUseMipMaps = false,

        void* pvData = 0);   

    void capture();

    void setTextureMatrix(const float16 &rkM)           { m_kTextureMatrix = rkM;   }

    void setTextureUnit(GLenum eUnit)                   { m_eTextureUnit = eUnit;   }

    void setFilterMode(GLenum eMode)                    { m_eFilterMode = eMode;    }

    void setWrapMode(GLenum eMode)                      { m_eWrapMode = eMode;      }

    void setCompareMode(GLenum eMode)                   { m_eCompareMode = eMode;   }

    void setCompareFunc(GLenum eFunc)                   { m_eCompareFunc = eFunc;   }

    void setDepthMode(GLenum eMode)                     { m_eDepthMode = eMode;     }

    void setEnvMode(GLenum eMode)                       { m_eEnvMode = eMode;       }

    bool isEnabled() const                              { return m_bIsEnabled;      }

    uint getWidth() const                               { return m_uiWidth;         }

    uint getHeight() const                              { return m_uiHeight;        }

    uint getTextureId() const                           { return m_uiTextureId;     }

    GLenum getTarget() const                            { return m_eTarget;         }

    GLenum getTextureUnit() const                       { return m_eTextureUnit;    }

    GLenum getInternal() const                          { return m_eInternal;       }

    GLenum getFormat() const                            { return m_eFormat;         }

    GLenum getDataType() const                          { return m_eDataType;       }

    GLenum getFilterMode() const                        { return m_eFilterMode;     }

    GLenum getWrapMode() const                          { return m_eWrapMode;       }

    GLenum getCompareMode() const                       { return m_eCompareMode;    }

    GLenum getCompareFunc() const                       { return m_eCompareFunc;    }

    GLenum getEnvMode() const                           { return m_eEnvMode;        }

    GLenum getDepthMode() const                         { return m_eDepthMode;      }

protected:

    void destroy();

    uint createTexture(

        uint uiWidth, 

        uint uiHeight, 

        uint uiDepth, 

        GLenum eTarget,      // = GL_TEXTURE_2D,

        GLenum eInternal,    // = GL_RGBA_FLOAT32_APPLE, 

        GLenum eFormat,      // = GL_RGBA, 

        GLenum eDataType,    // = GL_FLOAT

        void* pvData = 0);

    void checkStatus(const char* acMessage=0);

protected:

    bool m_bIsEnabled;

    uint m_uiWidth;

    uint m_uiHeight;

    uint m_uiDepth;

    uint m_uiTextureId;

    GLenum m_eTarget;

    GLenum m_eTextureUnit;

    GLenum m_eInternal;

    GLenum m_eFormat;

    GLenum m_eDataType;

    GLenum m_eFilterMode;

    GLenum m_eWrapMode;

    GLenum m_eCompareMode;

    GLenum m_eCompareFunc;

    GLenum m_eEnvMode;

    GLenum m_eDepthMode;

    float16 m_kTextureMatrix;

};

#endif