127 lines
2.7 KiB
C++
127 lines
2.7 KiB
C++
// Copyright (C) 2002-2007 Nikolaus Gebhardt / Thomas Alten
|
|
// This file is part of the "Irrlicht Engine".
|
|
// For conditions of distribution and use, see copyright notice in irrlicht.h
|
|
|
|
#include "IrrCompileConfig.h"
|
|
#ifdef _IRR_COMPILE_WITH_BURNINGSVIDEO_
|
|
|
|
#include "SoftwareDriver2_compile_config.h"
|
|
#include "SoftwareDriver2_helper.h"
|
|
#include "CSoftwareTexture2.h"
|
|
#include "os.h"
|
|
|
|
namespace irr
|
|
{
|
|
namespace video
|
|
{
|
|
|
|
//! constructor
|
|
CSoftwareTexture2::CSoftwareTexture2(IImage* image, const char* name, bool generateMipLevels)
|
|
: ITexture(name), MipMapLOD(0), HasMipMaps(generateMipLevels)
|
|
{
|
|
#ifndef SOFTWARE_DRIVER_2_MIPMAPPING
|
|
HasMipMaps = false;
|
|
#endif
|
|
|
|
memset32 ( MipMap, 0, sizeof ( MipMap ) );
|
|
|
|
if (image)
|
|
{
|
|
|
|
core::dimension2d<s32> optSize;
|
|
core::dimension2d<s32> origSize = image->getDimension();
|
|
OrigSize = origSize;
|
|
|
|
optSize.Width = getTextureSizeFromSurfaceSize(origSize.Width);
|
|
optSize.Height = getTextureSizeFromSurfaceSize(origSize.Height);
|
|
|
|
if ( origSize == optSize )
|
|
{
|
|
MipMap[0] = new CImage(ECF_SOFTWARE2, image);
|
|
}
|
|
else
|
|
{
|
|
MipMap[0] = new CImage(ECF_SOFTWARE2, optSize);
|
|
|
|
// temporary CImage needed
|
|
CImage * temp = new CImage ( ECF_SOFTWARE2, image );
|
|
temp->copyToScaling(MipMap[0]);
|
|
temp->drop ();
|
|
}
|
|
|
|
|
|
}
|
|
|
|
regenerateMipMapLevels ();
|
|
setCurrentMipMapLOD ( 0 );
|
|
}
|
|
|
|
|
|
|
|
//! destructor
|
|
CSoftwareTexture2::~CSoftwareTexture2()
|
|
{
|
|
for ( s32 i = 0; i!= SOFTWARE_DRIVER_2_MIPMAPPING_MAX; ++i )
|
|
{
|
|
if ( MipMap[i] )
|
|
MipMap[i]->drop ();
|
|
}
|
|
}
|
|
|
|
|
|
//! returns the size of a texture which would be the optimize size for rendering it
|
|
inline s32 CSoftwareTexture2::getTextureSizeFromSurfaceSize(s32 size)
|
|
{
|
|
s32 ts = 0x01;
|
|
while(ts < size)
|
|
ts <<= 1;
|
|
|
|
/*
|
|
if (ts > size && ts > 256 )
|
|
ts >>= 1;
|
|
*/
|
|
return ts;
|
|
}
|
|
|
|
|
|
|
|
//! Regenerates the mip map levels of the texture. Useful after locking and
|
|
//! modifying the texture
|
|
void CSoftwareTexture2::regenerateMipMapLevels()
|
|
{
|
|
if ( !HasMipMaps )
|
|
return;
|
|
|
|
s32 i;
|
|
|
|
// release
|
|
for ( i = 1; i!= SOFTWARE_DRIVER_2_MIPMAPPING_MAX; ++i )
|
|
{
|
|
if ( MipMap[i] )
|
|
MipMap[i]->drop ();
|
|
}
|
|
|
|
core::dimension2d<s32> newSize;
|
|
core::dimension2d<s32> currentSize;
|
|
|
|
i = 1;
|
|
CImage * c = MipMap[0];
|
|
while ( i < SOFTWARE_DRIVER_2_MIPMAPPING_MAX )
|
|
{
|
|
currentSize = c->getDimension();
|
|
newSize.Width = core::s32_max ( 1, currentSize.Width >> 1 );
|
|
newSize.Height = core::s32_max ( 1, currentSize.Height >> 1 );
|
|
|
|
MipMap[i] = new CImage(ECF_SOFTWARE2, newSize);
|
|
MipMap[0]->copyToScalingBoxFilter ( MipMap[i], 0 );
|
|
c = MipMap[i];
|
|
i += 1;
|
|
}
|
|
}
|
|
|
|
|
|
} // end namespace video
|
|
} // end namespace irr
|
|
|
|
#endif // _IRR_COMPILE_WITH_BURNINGSVIDEO_
|