| 1 | /*
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| 2 | -----------------------------------------------------------------------------
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| 3 | This source file is part of OGRE
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| 4 | (Object-oriented Graphics Rendering Engine)
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| 5 | For the latest info, see http://www.ogre3d.org/
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| 6 |
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| 7 | Copyright (c) 2000-2005 The OGRE Team
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| 8 | Also see acknowledgements in Readme.html
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| 9 |
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| 10 | This program is free software; you can redistribute it and/or modify it under
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| 11 | the terms of the GNU Lesser General Public License as published by the Free Software
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| 12 | Foundation; either version 2 of the License, or (at your option) any later
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| 13 | version.
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| 14 |
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| 15 | This program is distributed in the hope that it will be useful, but WITHOUT
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| 16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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| 17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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| 18 |
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| 19 | You should have received a copy of the GNU Lesser General Public License along with
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| 20 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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| 21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to
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| 22 | http://www.gnu.org/copyleft/lesser.txt.
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| 23 | -----------------------------------------------------------------------------
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| 24 | */
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| 25 | #include "OgreStableHeaders.h"
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| 26 | #include "OgreLogManager.h"
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| 27 | #include "OgreHardwarePixelBuffer.h"
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| 28 | #include "OgreImage.h"
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| 29 | #include "OgreTexture.h"
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| 30 | #include "OgreException.h"
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| 31 | #include "OgreResourceManager.h"
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| 32 |
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| 33 | namespace Ogre {
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| 34 | //--------------------------------------------------------------------------
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| 35 | Texture::Texture(ResourceManager* creator, const String& name,
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| 36 | ResourceHandle handle, const String& group, bool isManual,
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| 37 | ManualResourceLoader* loader)
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| 38 | : Resource(creator, name, handle, group, isManual, loader),
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| 39 | // init defaults; can be overridden before load()
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| 40 | mHeight(512),
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| 41 | mWidth(512),
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| 42 | mDepth(1),
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| 43 | mNumRequestedMipmaps(0),
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| 44 | mNumMipmaps(0),
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| 45 | mMipmapsHardwareGenerated(false),
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| 46 | mGamma(1.0f),
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| 47 | mTextureType(TEX_TYPE_2D),
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| 48 | mFormat(PF_A8R8G8B8),
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| 49 | mUsage(TU_DEFAULT),
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| 50 | // mSrcBpp inited later on
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| 51 | mSrcWidth(0),
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| 52 | mSrcHeight(0),
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| 53 | mSrcDepth(0), mInternalResourcesCreated(false),
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| 54 | // mFinalBpp inited later on by enable32bit
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| 55 | mHasAlpha(false)
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| 56 | {
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| 57 |
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| 58 | enable32Bit(false);
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| 59 |
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| 60 | if (createParamDictionary("Texture"))
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| 61 | {
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| 62 | // Define the parameters that have to be present to load
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| 63 | // from a generic source; actually there are none, since when
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| 64 | // predeclaring, you use a texture file which includes all the
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| 65 | // information required.
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| 66 | }
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| 67 |
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| 68 |
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| 69 | }
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| 70 | //-------------------------------------------------------------------------- //--------------------------------------------------------------------------
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| 71 | void Texture::loadRawData( DataStreamPtr& stream,
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| 72 | ushort uWidth, ushort uHeight, PixelFormat eFormat)
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| 73 | {
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| 74 | Image img;
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| 75 | img.loadRawData(stream, uWidth, uHeight, eFormat);
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| 76 | loadImage(img);
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| 77 | }
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| 78 | //--------------------------------------------------------------------------
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| 79 | void Texture::setFormat(PixelFormat pf)
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| 80 | {
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| 81 | mFormat = pf;
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| 82 | // This should probably change with new texture access methods, but
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| 83 | // no changes made for now
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| 84 | mSrcBpp = PixelUtil::getNumElemBytes(mFormat);
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| 85 | mHasAlpha = PixelUtil::getFlags(mFormat) & PFF_HASALPHA;
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| 86 | }
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| 87 | //--------------------------------------------------------------------------
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| 88 | size_t Texture::calculateSize(void) const
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| 89 | {
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| 90 | return getNumFaces() * PixelUtil::getMemorySize(mWidth, mHeight, mDepth, mFormat);
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| 91 | }
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| 92 | //--------------------------------------------------------------------------
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| 93 | size_t Texture::getNumFaces(void) const
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| 94 | {
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| 95 | return getTextureType() == TEX_TYPE_CUBE_MAP ? 6 : 1;
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| 96 | }
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| 97 | //--------------------------------------------------------------------------
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| 98 | void Texture::_loadImages( const std::vector<const Image*>& images )
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| 99 | {
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| 100 | if(images.size() < 1)
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| 101 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, "Cannot load empty vector of images",
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| 102 | "Texture::loadImages");
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| 103 |
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| 104 | if( mIsLoaded )
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| 105 | {
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| 106 | LogManager::getSingleton().logMessage(
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| 107 | LML_NORMAL, "Texture: "+mName+": Unloading Image");
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| 108 | unload();
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| 109 | }
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| 110 |
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| 111 | // Set desired texture size and properties from images[0]
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| 112 | mSrcWidth = mWidth = images[0]->getWidth();
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| 113 | mSrcHeight = mHeight = images[0]->getHeight();
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| 114 | mSrcDepth = mDepth = images[0]->getDepth();
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| 115 | if (mHasAlpha && images[0]->getFormat() == PF_L8)
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| 116 | {
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| 117 | mFormat = PF_A8;
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| 118 | mSrcBpp = 8;
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| 119 | }
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| 120 | else
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| 121 | {
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| 122 | mFormat = images[0]->getFormat();
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| 123 | mSrcBpp = PixelUtil::getNumElemBits(mFormat);
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| 124 | mHasAlpha = PixelUtil::hasAlpha(mFormat);
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| 125 | }
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| 126 |
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| 127 | if (mFinalBpp == 16)
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| 128 | {
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| 129 | // Drop down texture internal format
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| 130 | switch (mFormat)
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| 131 | {
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| 132 | case PF_R8G8B8:
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| 133 | case PF_X8R8G8B8:
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| 134 | mFormat = PF_R5G6B5;
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| 135 | break;
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| 136 |
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| 137 | case PF_B8G8R8:
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| 138 | case PF_X8B8G8R8:
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| 139 | mFormat = PF_B5G6R5;
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| 140 | break;
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| 141 |
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| 142 | case PF_A8R8G8B8:
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| 143 | case PF_R8G8B8A8:
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| 144 | case PF_A8B8G8R8:
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| 145 | case PF_B8G8R8A8:
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| 146 | mFormat = PF_A4R4G4B4;
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| 147 | break;
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| 148 | }
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| 149 | }
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| 150 |
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| 151 | // The custom mipmaps in the image have priority over everything
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| 152 | size_t imageMips = images[0]->getNumMipmaps();
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| 153 |
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| 154 | if(imageMips > 0) {
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| 155 | mNumMipmaps = images[0]->getNumMipmaps();
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| 156 | // Disable flag for auto mip generation
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| 157 | mUsage &= ~TU_AUTOMIPMAP;
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| 158 | }
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| 159 |
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| 160 | // Create the texture
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| 161 | createInternalResources();
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| 162 | // Check if we're loading one image with multiple faces
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| 163 | // or a vector of images representing the faces
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| 164 | size_t faces;
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| 165 | bool multiImage; // Load from multiple images?
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| 166 | if(images.size() > 1)
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| 167 | {
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| 168 | faces = images.size();
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| 169 | multiImage = true;
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| 170 | }
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| 171 | else
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| 172 | {
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| 173 | faces = images[0]->getNumFaces();
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| 174 | multiImage = false;
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| 175 | }
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| 176 |
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| 177 | // Check wether number of faces in images exceeds number of faces
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| 178 | // in this texture. If so, clamp it.
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| 179 | if(faces > getNumFaces())
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| 180 | faces = getNumFaces();
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| 181 |
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| 182 | // Say what we're doing
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| 183 | StringUtil::StrStreamType str;
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| 184 | str << "Texture: " << mName << ": Loading " << faces << " faces"
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| 185 | << "(" << PixelUtil::getFormatName(images[0]->getFormat()) << "," <<
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| 186 | images[0]->getWidth() << "x" << images[0]->getHeight() << "x" << images[0]->getDepth() <<
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| 187 | ") with ";
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| 188 | if (!(mMipmapsHardwareGenerated && mNumMipmaps == 0))
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| 189 | str << mNumMipmaps;
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| 190 | if(mUsage & TU_AUTOMIPMAP)
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| 191 | {
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| 192 | if (mMipmapsHardwareGenerated)
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| 193 | str << " hardware";
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| 194 |
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| 195 | str << " generated mipmaps";
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| 196 | }
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| 197 | else
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| 198 | {
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| 199 | str << " custom mipmaps";
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| 200 | }
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| 201 | if(multiImage)
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| 202 | str << " from multiple Images.";
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| 203 | else
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| 204 | str << " from Image.";
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| 205 | // Scoped
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| 206 | {
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| 207 | // Print data about first destination surface
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| 208 | HardwarePixelBufferSharedPtr buf = getBuffer(0, 0);
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| 209 | str << " Internal format is " << PixelUtil::getFormatName(buf->getFormat()) <<
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| 210 | "," << buf->getWidth() << "x" << buf->getHeight() << "x" << buf->getDepth() << ".";
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| 211 | }
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| 212 | LogManager::getSingleton().logMessage(
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| 213 | LML_NORMAL, str.str());
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| 214 |
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| 215 | // Main loading loop
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| 216 | // imageMips == 0 if the image has no custom mipmaps, otherwise contains the number of custom mips
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| 217 | for(size_t mip = 0; mip<=imageMips; ++mip)
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| 218 | {
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| 219 | for(size_t i = 0; i < faces; ++i)
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| 220 | {
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| 221 | PixelBox src;
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| 222 | if(multiImage)
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| 223 | {
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| 224 | // Load from multiple images
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| 225 | src = images[i]->getPixelBox(0, mip);
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| 226 | }
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| 227 | else
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| 228 | {
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| 229 | // Load from faces of images[0]
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| 230 | src = images[0]->getPixelBox(i, mip);
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| 231 |
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| 232 | if (mHasAlpha && src.format == PF_L8)
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| 233 | src.format = PF_A8;
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| 234 | }
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| 235 |
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| 236 | if(mGamma != 1.0f) {
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| 237 | // Apply gamma correction
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| 238 | // Do not overwrite original image but do gamma correction in temporary buffer
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| 239 | MemoryDataStreamPtr buf; // for scoped deletion of conversion buffer
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| 240 | buf.bind(new MemoryDataStream(
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| 241 | PixelUtil::getMemorySize(
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| 242 | src.getWidth(), src.getHeight(), src.getDepth(), src.format)));
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| 243 |
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| 244 | PixelBox corrected = PixelBox(src.getWidth(), src.getHeight(), src.getDepth(), src.format, buf->getPtr());
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| 245 | PixelUtil::bulkPixelConversion(src, corrected);
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| 246 |
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| 247 | Image::applyGamma(static_cast<uint8*>(corrected.data), mGamma, corrected.getConsecutiveSize(),
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| 248 | PixelUtil::getNumElemBits(src.format));
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| 249 |
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| 250 | // Destination: entire texture. blitFromMemory does the scaling to
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| 251 | // a power of two for us when needed
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| 252 | getBuffer(i, mip)->blitFromMemory(corrected);
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| 253 | }
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| 254 | else
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| 255 | {
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| 256 | // Destination: entire texture. blitFromMemory does the scaling to
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| 257 | // a power of two for us when needed
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| 258 | getBuffer(i, mip)->blitFromMemory(src);
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| 259 | }
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| 260 |
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| 261 | }
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| 262 | }
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| 263 | // Update size (the final size, not including temp space)
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| 264 | mSize = getNumFaces() * PixelUtil::getMemorySize(mWidth, mHeight, mDepth, mFormat);
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| 265 |
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| 266 | mIsLoaded = true;
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| 267 | }
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| 268 | //-----------------------------------------------------------------------------
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| 269 | void Texture::createInternalResources(void)
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| 270 | {
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| 271 | if (!mInternalResourcesCreated)
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| 272 | {
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| 273 | createInternalResourcesImpl();
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| 274 | mInternalResourcesCreated = true;
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| 275 | }
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| 276 | }
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| 277 | //-----------------------------------------------------------------------------
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| 278 | void Texture::freeInternalResources(void)
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| 279 | {
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| 280 | if (mInternalResourcesCreated)
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| 281 | {
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| 282 | freeInternalResourcesImpl();
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| 283 | mInternalResourcesCreated = false;
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| 284 | }
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| 285 | }
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| 286 | //-----------------------------------------------------------------------------
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| 287 | void Texture::unloadImpl(void)
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| 288 | {
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| 289 | freeInternalResources();
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| 290 | }
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| 291 | //-----------------------------------------------------------------------------
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| 292 | void Texture::copyToTexture( TexturePtr& target )
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| 293 | {
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| 294 | if(target->getNumFaces() != getNumFaces())
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| 295 | {
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| 296 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
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| 297 | "Texture types must match",
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| 298 | "Texture::copyToTexture");
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| 299 | }
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| 300 | size_t numMips = std::min(getNumMipmaps(), target->getNumMipmaps());
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| 301 | if((mUsage & TU_AUTOMIPMAP) || (target->getUsage()&TU_AUTOMIPMAP))
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| 302 | numMips = 0;
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| 303 | for(int face=0; face<getNumFaces(); face++)
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| 304 | {
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| 305 | for(int mip=0; mip<=numMips; mip++)
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| 306 | {
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| 307 | target->getBuffer(face, mip)->blit(getBuffer(face, mip));
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| 308 | }
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| 309 | }
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| 310 | }
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| 311 |
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| 312 |
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| 313 | }
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