[657] | 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 "OgreGLHardwarePixelBuffer.h"
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| 26 | #include "OgreGLTexture.h"
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| 27 | #include "OgreGLSupport.h"
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| 28 | #include "OgreGLPixelFormat.h"
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| 29 | #include "OgreException.h"
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| 30 | #include "OgreLogManager.h"
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| 31 | #include "OgreStringConverter.h"
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| 32 | #include "OgreBitwise.h"
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| 33 |
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| 34 | namespace Ogre {
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| 35 | //-----------------------------------------------------------------------------
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| 36 | GLHardwarePixelBuffer::GLHardwarePixelBuffer(GLenum target, GLuint id, GLint face, GLint level, Usage usage, bool crappyCard):
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| 37 | HardwarePixelBuffer(0, 0, 0, PF_UNKNOWN, usage, false, false),
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| 38 | mType(TYPE_TEXTURE),
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| 39 | mTarget(target), mTextureID(id), mFace(face), mLevel(level), mSoftwareMipmap(crappyCard)
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| 40 | {
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| 41 | // devise mWidth, mHeight and mDepth and mFormat
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| 42 | GLint value;
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| 43 |
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| 44 | glBindTexture( mTarget, mTextureID );
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| 45 |
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| 46 | // Get face identifier
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| 47 | mFaceTarget = mTarget;
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| 48 | if(mTarget == GL_TEXTURE_CUBE_MAP)
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| 49 | mFaceTarget = GL_TEXTURE_CUBE_MAP_POSITIVE_X + face;
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| 50 |
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| 51 | // Get width
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| 52 | glGetTexLevelParameteriv(mFaceTarget, level, GL_TEXTURE_WIDTH, &value);
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| 53 | mWidth = value;
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| 54 |
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| 55 | // Get height
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| 56 | if(target == GL_TEXTURE_1D)
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| 57 | value = 1; // Height always 1 for 1D textures
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| 58 | else
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| 59 | glGetTexLevelParameteriv(mFaceTarget, level, GL_TEXTURE_HEIGHT, &value);
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| 60 | mHeight = value;
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| 61 |
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| 62 | // Get depth
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| 63 | if(target != GL_TEXTURE_3D)
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| 64 | value = 1; // Depth always 1 for non-3D textures
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| 65 | else
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| 66 | glGetTexLevelParameteriv(mFaceTarget, level, GL_TEXTURE_DEPTH, &value);
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| 67 | mDepth = value;
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| 68 |
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| 69 | // Get format
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| 70 | glGetTexLevelParameteriv(mFaceTarget, level, GL_TEXTURE_INTERNAL_FORMAT, &value);
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| 71 | int mGLInternalFormat = value;
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| 72 | mFormat = GLPixelUtil::getClosestOGREFormat(value);
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| 73 |
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| 74 | // Default
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| 75 | mRowPitch = mWidth;
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| 76 | mSlicePitch = mHeight*mWidth;
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| 77 | mSizeInBytes = PixelUtil::getMemorySize(mWidth, mHeight, mDepth, mFormat);
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| 78 |
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| 79 | // Log a message
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| 80 | /*
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| 81 | std::stringstream str;
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| 82 | str << "GLHardwarePixelBuffer constructed for texture " << mTextureID
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| 83 | << " face " << mFace << " level " << mLevel << ": "
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| 84 | << "width=" << mWidth << " height="<< mHeight << " depth=" << mDepth
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| 85 | << "format=" << PixelUtil::getFormatName(mFormat) << "(internal 0x"
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| 86 | << std::hex << value << ")";
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| 87 | LogManager::getSingleton().logMessage(
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| 88 | LML_NORMAL, str.str());
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| 89 | */
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| 90 | // Set up pixel box
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| 91 | mBuffer = PixelBox(mWidth, mHeight, mDepth, mFormat);
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| 92 |
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| 93 | if(mWidth==0 || mHeight==0 || mDepth==0)
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| 94 | /// We are invalid, do not allocate a buffer
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| 95 | return;
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| 96 | // Allocate buffer
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| 97 | if(mUsage & HBU_STATIC)
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| 98 | allocateBuffer();
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| 99 | }
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| 100 |
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| 101 | //-----------------------------------------------------------------------------
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| 102 | GLHardwarePixelBuffer::~GLHardwarePixelBuffer()
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| 103 | {
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| 104 | // Force free buffer
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| 105 | delete [] (uint8*)mBuffer.data;
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| 106 | }
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| 107 | //-----------------------------------------------------------------------------
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| 108 | void GLHardwarePixelBuffer::allocateBuffer()
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| 109 | {
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| 110 | if(mBuffer.data)
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| 111 | // Already allocated
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| 112 | return;
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| 113 | mBuffer.data = new uint8[mSizeInBytes];
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| 114 | // TODO: use PBO if we're HBU_DYNAMIC
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| 115 | }
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| 116 | //-----------------------------------------------------------------------------
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| 117 | void GLHardwarePixelBuffer::freeBuffer()
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| 118 | {
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| 119 | // Free buffer if we're STATIC to save memory
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| 120 | if(mUsage & HBU_STATIC)
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| 121 | {
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| 122 | delete [] (uint8*)mBuffer.data;
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| 123 | mBuffer.data = 0;
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| 124 | }
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| 125 | }
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| 126 | //-----------------------------------------------------------------------------
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| 127 | PixelBox GLHardwarePixelBuffer::lockImpl(const Image::Box lockBox, LockOptions options)
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| 128 | {
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| 129 | allocateBuffer();
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| 130 | //if(!(mUsage & HBU_WRITEONLY) && options!=HBU_DISCARD)
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| 131 | if(options == HBL_READ_ONLY)
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| 132 | // Download the old contents of the texture
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| 133 | download(mBuffer);
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| 134 | return mBuffer.getSubVolume(lockBox);
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| 135 | }
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| 136 | //-----------------------------------------------------------------------------
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| 137 | void GLHardwarePixelBuffer::unlockImpl(void)
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| 138 | {
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| 139 | // From buffer to card
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| 140 | upload(mCurrentLock);
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| 141 |
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| 142 | freeBuffer();
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| 143 | }
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| 144 | //-----------------------------------------------------------------------------
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| 145 | void GLHardwarePixelBuffer::upload(const PixelBox &data)
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| 146 | {
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| 147 | glBindTexture( mTarget, mTextureID );
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| 148 | if(PixelUtil::isCompressed(data.format))
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| 149 | {
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| 150 | if(data.format != mFormat || !data.isConsecutive())
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| 151 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
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| 152 | "Compressed images must be consecutive, in the source format",
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| 153 | "GLHardwarePixelBuffer::upload");
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| 154 | GLenum format = GLPixelUtil::getClosestGLInternalFormat(mFormat);
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| 155 | // Data must be consecutive and at beginning of buffer as PixelStorei not allowed
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| 156 | // for compressed formats
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| 157 | switch(mTarget) {
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| 158 | case GL_TEXTURE_1D:
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| 159 | glCompressedTexSubImage1DARB_ptr(GL_TEXTURE_1D, mLevel,
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| 160 | data.left,
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| 161 | data.getWidth(),
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| 162 | format, data.getConsecutiveSize(),
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| 163 | data.data);
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| 164 | break;
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| 165 | case GL_TEXTURE_2D:
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| 166 | case GL_TEXTURE_CUBE_MAP:
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| 167 | glCompressedTexSubImage2DARB_ptr(mFaceTarget, mLevel,
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| 168 | data.left, data.top,
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| 169 | data.getWidth(), data.getHeight(),
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| 170 | format, data.getConsecutiveSize(),
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| 171 | data.data);
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| 172 | break;
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| 173 | case GL_TEXTURE_3D:
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| 174 | glCompressedTexSubImage3DARB_ptr(GL_TEXTURE_3D, mLevel,
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| 175 | data.left, data.top, data.front,
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| 176 | data.getWidth(), data.getHeight(), data.getDepth(),
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| 177 | format, data.getConsecutiveSize(),
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| 178 | data.data);
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| 179 | break;
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| 180 | }
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| 181 |
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| 182 | }
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| 183 | else if(mSoftwareMipmap)
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| 184 | {
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| 185 | GLint internalFormat;
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| 186 | glGetTexLevelParameteriv(mTarget, mLevel, GL_TEXTURE_INTERNAL_FORMAT, &internalFormat);
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| 187 | if(data.getWidth() != data.rowPitch)
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| 188 | glPixelStorei(GL_UNPACK_ROW_LENGTH, data.rowPitch);
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| 189 | if(data.getHeight()*data.getWidth() != data.slicePitch)
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| 190 | glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, (data.slicePitch/data.getWidth()));
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| 191 | glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
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| 192 |
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| 193 | switch(mTarget)
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| 194 | {
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| 195 | case GL_TEXTURE_1D:
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| 196 | gluBuild1DMipmaps(
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| 197 | GL_TEXTURE_1D, internalFormat,
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| 198 | data.getWidth(),
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| 199 | GLPixelUtil::getGLOriginFormat(data.format), GLPixelUtil::getGLOriginDataType(data.format),
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| 200 | data.data);
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| 201 | break;
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| 202 | case GL_TEXTURE_2D:
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| 203 | case GL_TEXTURE_CUBE_MAP:
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| 204 | gluBuild2DMipmaps(
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| 205 | mFaceTarget,
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| 206 | internalFormat, data.getWidth(), data.getHeight(),
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| 207 | GLPixelUtil::getGLOriginFormat(data.format), GLPixelUtil::getGLOriginDataType(data.format),
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| 208 | data.data);
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| 209 | break;
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| 210 | case GL_TEXTURE_3D:
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| 211 | /* Requires GLU 1.3 which is harder to come by than cards doing hardware mipmapping
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| 212 | Most 3D textures don't need mipmaps?
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| 213 | gluBuild3DMipmaps(
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| 214 | GL_TEXTURE_3D, internalFormat,
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| 215 | data.getWidth(), data.getHeight(), data.getDepth(),
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| 216 | GLPixelUtil::getGLOriginFormat(data.format), GLPixelUtil::getGLOriginDataType(data.format),
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| 217 | data.data);
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| 218 | */
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| 219 | glTexImage3D(
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| 220 | GL_TEXTURE_3D, 0, internalFormat,
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| 221 | data.getWidth(), data.getHeight(), data.getDepth(), 0,
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| 222 | GLPixelUtil::getGLOriginFormat(data.format), GLPixelUtil::getGLOriginDataType(data.format),
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| 223 | data.data );
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| 224 | break;
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| 225 | }
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| 226 | }
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| 227 | else
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| 228 | {
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| 229 | if(data.getWidth() != data.rowPitch)
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| 230 | glPixelStorei(GL_UNPACK_ROW_LENGTH, data.rowPitch);
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| 231 | if(data.getHeight()*data.getWidth() != data.slicePitch)
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| 232 | glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, (data.slicePitch/data.getWidth()));
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| 233 | if((data.getWidth()*PixelUtil::getNumElemBytes(data.format)) & 3) {
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| 234 | // Standard alignment of 4 is not right
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| 235 | glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
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| 236 | }
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| 237 | switch(mTarget) {
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| 238 | case GL_TEXTURE_1D:
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| 239 | glTexSubImage1D(GL_TEXTURE_1D, mLevel,
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| 240 | data.left,
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| 241 | data.getWidth(),
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| 242 | GLPixelUtil::getGLOriginFormat(data.format), GLPixelUtil::getGLOriginDataType(data.format),
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| 243 | data.data);
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| 244 | break;
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| 245 | case GL_TEXTURE_2D:
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| 246 | case GL_TEXTURE_CUBE_MAP:
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| 247 | glTexSubImage2D(mFaceTarget, mLevel,
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| 248 | data.left, data.top,
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| 249 | data.getWidth(), data.getHeight(),
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| 250 | GLPixelUtil::getGLOriginFormat(data.format), GLPixelUtil::getGLOriginDataType(data.format),
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| 251 | data.data);
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| 252 | break;
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| 253 | case GL_TEXTURE_3D:
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| 254 | #if OGRE_PLATFORM == OGRE_PLATFORM_LINUX
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| 255 | // GLX doesn't define it
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| 256 | glTexSubImage3DEXT(
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| 257 | #else
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| 258 | glTexSubImage3D(
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| 259 | #endif
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| 260 | GL_TEXTURE_3D, mLevel,
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| 261 | data.left, data.top, data.front,
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| 262 | data.getWidth(), data.getHeight(), data.getDepth(),
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| 263 | GLPixelUtil::getGLOriginFormat(data.format), GLPixelUtil::getGLOriginDataType(data.format),
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| 264 | data.data);
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| 265 | break;
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| 266 | }
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| 267 | }
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| 268 | // Restore defaults
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| 269 | glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
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| 270 | glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, 0);
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| 271 | glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
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| 272 | }
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| 273 | //-----------------------------------------------------------------------------
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| 274 | void GLHardwarePixelBuffer::download(const PixelBox &data)
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| 275 | {
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| 276 | if(data.getWidth() != getWidth() ||
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| 277 | data.getHeight() != getHeight() ||
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| 278 | data.getDepth() != getDepth())
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| 279 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, "only download of entire buffer is supported by GL",
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| 280 | "GLHardwarePixelBuffer::download");
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| 281 | glBindTexture( mTarget, mTextureID );
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| 282 | if(PixelUtil::isCompressed(data.format))
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| 283 | {
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| 284 | if(data.format != mFormat || !data.isConsecutive())
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| 285 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
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| 286 | "Compressed images must be consecutive, in the source format",
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| 287 | "GLHardwarePixelBuffer::upload");
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| 288 | // Data must be consecutive and at beginning of buffer as PixelStorei not allowed
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| 289 | // for compressed formate
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| 290 | glGetCompressedTexImageARB_ptr(mFaceTarget, mLevel, data.data);
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| 291 | }
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| 292 | else
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| 293 | {
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| 294 | if(data.getWidth() != data.rowPitch)
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| 295 | glPixelStorei(GL_PACK_ROW_LENGTH, data.rowPitch);
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| 296 | if(data.getHeight()*data.getWidth() != data.slicePitch)
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| 297 | glPixelStorei(GL_PACK_IMAGE_HEIGHT, (data.slicePitch/data.getWidth()));
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| 298 | if((data.getWidth()*PixelUtil::getNumElemBytes(data.format)) & 3) {
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| 299 | // Standard alignment of 4 is not right
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| 300 | glPixelStorei(GL_PACK_ALIGNMENT, 1);
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| 301 | }
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| 302 | // We can only get the entire texture
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| 303 | glGetTexImage(mFaceTarget, mLevel,
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| 304 | GLPixelUtil::getGLOriginFormat(data.format), GLPixelUtil::getGLOriginDataType(data.format),
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| 305 | data.data);
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| 306 | // Restore defaults
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| 307 | glPixelStorei(GL_PACK_ROW_LENGTH, 0);
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| 308 | glPixelStorei(GL_PACK_IMAGE_HEIGHT, 0);
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| 309 | glPixelStorei(GL_PACK_ALIGNMENT, 4);
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| 310 | }
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| 311 | }
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| 312 | //-----------------------------------------------------------------------------
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| 313 | void GLHardwarePixelBuffer::blit(HardwarePixelBuffer *src, const Image::Box &srcBox, const Image::Box &dstBox)
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| 314 | {
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| 315 | // this can be sped up with some copy pixels primitive, sometimes, maybe
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| 316 | HardwarePixelBuffer::blit(src, srcBox, dstBox);
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| 317 | }
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| 318 | //-----------------------------------------------------------------------------
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| 319 | void GLHardwarePixelBuffer::blitFromMemory(const PixelBox &src, const Image::Box &dstBox)
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| 320 | {
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| 321 | if(!mBuffer.contains(dstBox))
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| 322 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, "destination box out of range",
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| 323 | "GLHardwarePixelBuffer::blitFromMemory");
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| 324 | PixelBox scaled;
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| 325 |
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| 326 | if(src.getWidth() != dstBox.getWidth() ||
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| 327 | src.getHeight() != dstBox.getHeight() ||
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| 328 | src.getDepth() != dstBox.getDepth())
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| 329 | {
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| 330 | // Scale to destination size. Use DevIL and not iluScale because ILU screws up for
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| 331 | // floating point textures and cannot cope with 3D images.
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| 332 | // This also does pixel format conversion if needed
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| 333 | allocateBuffer();
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| 334 | scaled = mBuffer.getSubVolume(dstBox);
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| 335 | Image::scale(src, scaled, Image::FILTER_BILINEAR);
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| 336 | }
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| 337 | else if(GLPixelUtil::getGLOriginFormat(src.format) == 0)
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| 338 | {
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| 339 | // Extents match, but format is not accepted as valid source format for GL
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| 340 | // do conversion in temporary buffer
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| 341 | allocateBuffer();
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| 342 | scaled = mBuffer.getSubVolume(dstBox);
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| 343 | PixelUtil::bulkPixelConversion(src, scaled);
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| 344 | }
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| 345 | else
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| 346 | {
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| 347 | // No scaling or conversion needed
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| 348 | scaled = src;
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| 349 | // Set extents for upload
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| 350 | scaled.left = dstBox.left;
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| 351 | scaled.right = dstBox.right;
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| 352 | scaled.top = dstBox.top;
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| 353 | scaled.bottom = dstBox.bottom;
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| 354 | scaled.front = dstBox.front;
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| 355 | scaled.back = dstBox.back;
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| 356 | }
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| 357 |
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| 358 | upload(scaled);
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| 359 | freeBuffer();
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| 360 | }
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| 361 | //-----------------------------------------------------------------------------
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| 362 | void GLHardwarePixelBuffer::blitToMemory(const Image::Box &srcBox, const PixelBox &dst)
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| 363 | {
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| 364 | if(!mBuffer.contains(srcBox))
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| 365 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, "source box out of range",
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| 366 | "GLHardwarePixelBuffer::blitToMemory");
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| 367 | if(srcBox.left == 0 && srcBox.right == getWidth() &&
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| 368 | srcBox.top == 0 && srcBox.bottom == getHeight() &&
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| 369 | srcBox.front == 0 && srcBox.back == getDepth() &&
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| 370 | dst.getWidth() == getWidth() &&
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| 371 | dst.getHeight() == getHeight() &&
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| 372 | dst.getDepth() == getDepth() &&
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| 373 | GLPixelUtil::getGLOriginFormat(dst.format) != 0)
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| 374 | {
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| 375 | // The direct case: the user wants the entire texture in a format supported by GL
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| 376 | // so we don't need an intermediate buffer
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| 377 | download(dst);
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| 378 | }
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| 379 | else
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| 380 | {
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| 381 | // Use buffer for intermediate copy
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| 382 | allocateBuffer();
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| 383 | // Download entire buffer
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| 384 | download(mBuffer);
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| 385 | if(srcBox.getWidth() != dst.getWidth() ||
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| 386 | srcBox.getHeight() != dst.getHeight() ||
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| 387 | srcBox.getDepth() != dst.getDepth())
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| 388 | {
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| 389 | // We need scaling
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| 390 | Image::scale(mBuffer.getSubVolume(srcBox), dst, Image::FILTER_BILINEAR);
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| 391 | }
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| 392 | else
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| 393 | {
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| 394 | // Just copy the bit that we need
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| 395 | PixelUtil::bulkPixelConversion(mBuffer.getSubVolume(srcBox), dst);
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| 396 | }
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| 397 | freeBuffer();
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| 398 | }
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| 399 | }
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| 400 |
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| 401 |
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| 402 | };
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