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/*
* Copyright 2010 Inalogic® Inc.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License, as
* published by the Free Software Foundation; either version 2.1 or 3.0
* of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranties of
* MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the applicable version of the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of both the GNU Lesser General Public
* License along with this program. If not, see <http://www.gnu.org/licenses/>
*
* Authored by: Jay Taoko <jaytaoko@inalogic.com>
*
*/
#ifndef IOPENGLBASETEXTURE_H
#define IOPENGLBASETEXTURE_H
#include "GLResource.h"
#include "IOpenGLResource.h"
#include "GLShaderParameter.h"
#include "GLTextureStates.h"
namespace nux
{
class IOpenGLResource;
class IOpenGLBaseTexture;
int GetTextureSize(IOpenGLBaseTexture *pTexture);
// todo: It should not be possible to create an object of type IOpenGLBaseTexture directly.
class IOpenGLBaseTexture: public IOpenGLResource
{
NUX_DECLARE_OBJECT_TYPE(IOpenGLBaseTexture, IOpenGLResource);
public:
IOpenGLBaseTexture(OpenGLResourceType ResourceType,
unsigned int Width,
unsigned int Height,
unsigned int Depth,
unsigned int NumMipLevel,
BitmapFormat PixelFormat, NUX_FILE_LINE_PROTO);
virtual ~IOpenGLBaseTexture();
BitmapFormat GetPixelFormat() const
{
return _PixelFormat;
}
int GetNumMipLevel() const
{
return _NumMipLevel;
}
bool IsPowerOfTwo() const
{
return _IsPOT;
}
int GetWidth() const
{
if (_ResourceType == RTTEXTURE)
return _Width;
if (_ResourceType == RTTEXTURERECTANGLE)
return _Width;
if (_ResourceType == RTCUBETEXTURE)
return _Width;
return 0;
}
int GetHeight() const
{
if (_ResourceType == RTTEXTURE)
return _Height;
if (_ResourceType == RTTEXTURERECTANGLE)
return _Height;
if (_ResourceType == RTCUBETEXTURE)
return _Width;
return 0;
}
int GetDepth() const
{
if (_ResourceType == RTTEXTURE)
return 1;
if (_ResourceType == RTTEXTURERECTANGLE)
return 1;
if (_ResourceType == RTCUBETEXTURE)
return 1;
if (_ResourceType == RTVOLUMETEXTURE)
return _Depth;
if (_ResourceType == RTANIMATEDTEXTURE)
return _Depth;
return 0;
}
int GetFormatRowMemoryAlignment() const
{
return _RowMemoryAlignment;
}
//GLTextureStates& GetTextureStates() {return _TextureStates;}
void SetRenderStates();
void SetFiltering(unsigned int MIN = GL_NEAREST, unsigned int MAG = GL_NEAREST/*, unsigned int MIP = GL_NEAREST*/);
void SetWrap(unsigned int U = GL_REPEAT, unsigned int V = GL_REPEAT, unsigned int W = GL_REPEAT);
void SetLOD(float MinLod = -1000.0f, float MaxLod = +1000.0f);
void SetMipLevel(unsigned int MinMip = 0, unsigned int MaxMip = 1000);
void SetBorderColor(float R, float G, float B, float A);
int BindTexture();
int BindTextureToUnit(int TextureUnitIndex);
virtual void GetSurfaceLevel(int Level, ObjectPtr<IOpenGLSurface>& surface);
virtual ObjectPtr<IOpenGLSurface> GetSurfaceLevel(int Level);
virtual int LockRect(
int Level,
SURFACE_LOCKED_RECT *pLockedRect,
const SURFACE_RECT *pRect);
virtual int UnlockRect(int Level);
//! Return a pointer to a mipmap level data.
/*!
Return a pointer to a mipmap level data. The data is in the RGBA format.\n
@param level The requested texture mipmap level data.
@param width Returns the width in pixel of the image data.
@param height Returns the height in pixel of the image data.
@param stride Returns the row stride of the image data.
@return A pointer to RGBA data. The caller must delete the data by calling delete [].
*/
virtual unsigned char* GetSurfaceData(int level, int &width, int &height, int &stride);
protected:
GLTextureStates _TextureStates;
bool _IsPOT; // is power of two?
int _NumMipLevel;
BitmapFormat _PixelFormat;
// These parameters are scalable across textures, cube textures and volume textures.
// For texture and cube texture _Depth is equal to 1.
// For cube texture, _Width = _Height
int _Width;
int _Height;
int _Depth;
int _RowMemoryAlignment;
friend class IOpenGLSurface;
friend class IOpenGLVolume;
friend void GetTextureDesc(
IOpenGLBaseTexture *pTexture,
unsigned int Level,
TEXTURE_DESC *pDesc
);
friend int GetTextureSize(IOpenGLBaseTexture *pTexture);
};
}
#endif // IOPENGLBASETEXTURE_H
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