161 lines
2.8 KiB
C++
161 lines
2.8 KiB
C++
// Copyright (C) 2002-2007 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#include "IrrCompileConfig.h"
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#ifdef _IRR_COMPILE_WITH_SOFTWARE_
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#include "CSoftwareTexture.h"
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#include "os.h"
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namespace irr
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{
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namespace video
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{
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//! constructor
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CSoftwareTexture::CSoftwareTexture(IImage* image, const char* name)
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: ITexture(name), Texture(0)
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{
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#ifdef _DEBUG
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setDebugName("CSoftwareTexture");
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#endif
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if (image)
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{
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core::dimension2d<s32> optSize;
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OrigSize = image->getDimension();
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optSize.Width = getTextureSizeFromSurfaceSize(OrigSize.Width);
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optSize.Height = getTextureSizeFromSurfaceSize(OrigSize.Height);
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Image = new CImage(ECF_A1R5G5B5, image);
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if (optSize == OrigSize)
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{
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Texture = Image;
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Texture->grab();
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}
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else
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{
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Texture = new CImage(ECF_A1R5G5B5, optSize);
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Image->copyToScaling(Texture);
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}
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}
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}
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//! destructor
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CSoftwareTexture::~CSoftwareTexture()
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{
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if (Image)
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Image->drop();
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if (Texture)
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Texture->drop();
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}
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//! lock function
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void* CSoftwareTexture::lock()
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{
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return Image->lock();
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}
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//! unlock function
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void CSoftwareTexture::unlock()
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{
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if (Image != Texture)
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{
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os::Printer::log("Performance warning, slow unlock of non power of 2 texture.", ELL_WARNING);
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Image->copyToScaling(Texture);
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}
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Image->unlock();
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}
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//! Returns original size of the texture.
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const core::dimension2d<s32>& CSoftwareTexture::getOriginalSize()
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{
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return OrigSize;
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}
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//! Returns (=size) of the texture.
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const core::dimension2d<s32>& CSoftwareTexture::getSize()
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{
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return Image->getDimension();
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}
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//! returns unoptimized surface
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CImage* CSoftwareTexture::getImage()
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{
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return Image;
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}
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//! returns texture surface
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CImage* CSoftwareTexture::getTexture()
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{
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return Texture;
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}
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//! returns the size of a texture which would be the optimize size for rendering it
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inline s32 CSoftwareTexture::getTextureSizeFromSurfaceSize(s32 size)
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{
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s32 ts = 0x01;
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while(ts < size)
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ts <<= 1;
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return ts;
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}
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//! returns driver type of texture (=the driver, who created the texture)
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E_DRIVER_TYPE CSoftwareTexture::getDriverType()
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{
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return EDT_SOFTWARE;
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}
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//! returns color format of texture
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ECOLOR_FORMAT CSoftwareTexture::getColorFormat() const
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{
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return ECF_A1R5G5B5;
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}
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//! returns pitch of texture (in bytes)
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u32 CSoftwareTexture::getPitch() const
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{
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return Image->getDimension().Width * 2;
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}
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//! Regenerates the mip map levels of the texture. Useful after locking and
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//! modifying the texture
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void CSoftwareTexture::regenerateMipMapLevels()
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{
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// our software textures don't have mip maps
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}
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} // end namespace video
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} // end namespace irr
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#endif // _IRR_COMPILE_WITH_SOFTWARE_
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