| 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 "OgreILUtil.h"
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| 27 | #include "OgrePixelFormat.h"
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| 28 | #include "OgreBitwise.h"
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| 29 | #include "OgreColourValue.h"
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| 30 | #include "OgreException.h"
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| 31 |
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| 32 | #include <IL/il.h>
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| 33 | #include <IL/ilu.h>
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| 34 |
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| 35 | namespace Ogre {
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| 36 |
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| 37 | /*************************************************************************
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| 38 | * IL specific functions
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| 39 | */
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| 40 | PixelFormat ILUtil::ilFormat2OgreFormat( int ImageFormat, int ImageType )
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| 41 | {
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| 42 | PixelFormat fmt = PF_UNKNOWN;
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| 43 | switch( ImageFormat )
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| 44 | {
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| 45 | /* Compressed formats -- ignore type */
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| 46 | case IL_DXT1: fmt = PF_DXT1; break;
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| 47 | case IL_DXT2: fmt = PF_DXT2; break;
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| 48 | case IL_DXT3: fmt = PF_DXT3; break;
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| 49 | case IL_DXT4: fmt = PF_DXT4; break;
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| 50 | case IL_DXT5: fmt = PF_DXT5; break;
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| 51 | /* Normal formats */
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| 52 | case IL_RGB:
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| 53 | switch(ImageType)
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| 54 | {
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| 55 | case IL_FLOAT: fmt = PF_FLOAT32_RGB; break;
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| 56 | case IL_UNSIGNED_SHORT:
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| 57 | case IL_SHORT: fmt = PF_SHORT_RGBA; break;
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| 58 | default: fmt = PF_BYTE_RGB; break;
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| 59 | }
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| 60 | break;
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| 61 | case IL_BGR:
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| 62 | switch(ImageType)
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| 63 | {
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| 64 | case IL_FLOAT: fmt = PF_FLOAT32_RGB; break;
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| 65 | case IL_UNSIGNED_SHORT:
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| 66 | case IL_SHORT: fmt = PF_SHORT_RGBA; break;
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| 67 | default: fmt = PF_BYTE_BGR; break;
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| 68 | }
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| 69 | break;
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| 70 | case IL_RGBA:
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| 71 | switch(ImageType)
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| 72 | {
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| 73 | case IL_FLOAT: fmt = PF_FLOAT32_RGBA; break;
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| 74 | case IL_UNSIGNED_SHORT:
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| 75 | case IL_SHORT: fmt = PF_SHORT_RGBA; break;
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| 76 | default: fmt = PF_BYTE_RGBA; break;
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| 77 | }
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| 78 | break;
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| 79 | case IL_BGRA:
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| 80 | switch(ImageType)
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| 81 | {
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| 82 | case IL_FLOAT: fmt = PF_FLOAT32_RGBA; break;
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| 83 | case IL_UNSIGNED_SHORT:
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| 84 | case IL_SHORT: fmt = PF_SHORT_RGBA; break;
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| 85 | default: fmt = PF_BYTE_BGRA; break;
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| 86 | }
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| 87 | break;
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| 88 | case IL_LUMINANCE:
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| 89 | switch(ImageType)
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| 90 | {
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| 91 | case IL_BYTE:
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| 92 | case IL_UNSIGNED_BYTE:
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| 93 | fmt = PF_L8;
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| 94 | break;
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| 95 | default:
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| 96 | fmt = PF_L16;
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| 97 | }
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| 98 | break;
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| 99 | case IL_LUMINANCE_ALPHA:
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| 100 | fmt = PF_BYTE_LA;
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| 101 | break;
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| 102 | }
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| 103 | return fmt;
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| 104 | }
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| 105 |
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| 106 | //-----------------------------------------------------------------------
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| 107 |
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| 108 | ILUtil::ILFormat ILUtil::OgreFormat2ilFormat( PixelFormat format )
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| 109 | {
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| 110 | switch(format) {
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| 111 | case PF_BYTE_L: return ILFormat(1, IL_LUMINANCE, IL_UNSIGNED_BYTE);
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| 112 | case PF_BYTE_A: return ILFormat(1, IL_LUMINANCE, IL_UNSIGNED_BYTE);
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| 113 | case PF_SHORT_L: return ILFormat(1, IL_LUMINANCE, IL_UNSIGNED_SHORT);
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| 114 | case PF_BYTE_LA: return ILFormat(2, IL_LUMINANCE_ALPHA, IL_UNSIGNED_BYTE);
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| 115 | case PF_BYTE_RGB: return ILFormat(3, IL_RGB, IL_UNSIGNED_BYTE);
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| 116 | case PF_BYTE_RGBA: return ILFormat(4, IL_RGBA, IL_UNSIGNED_BYTE);
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| 117 | case PF_BYTE_BGR: return ILFormat(3, IL_BGR, IL_UNSIGNED_BYTE);
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| 118 | case PF_BYTE_BGRA: return ILFormat(4, IL_BGRA, IL_UNSIGNED_BYTE);
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| 119 | case PF_SHORT_RGBA: return ILFormat(4, IL_RGBA, IL_UNSIGNED_SHORT);
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| 120 | case PF_FLOAT32_RGB: return ILFormat(3, IL_RGB, IL_FLOAT);
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| 121 | case PF_FLOAT32_RGBA: return ILFormat(4, IL_RGBA, IL_FLOAT);
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| 122 | case PF_DXT1: return ILFormat(0, IL_DXT1);
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| 123 | case PF_DXT2: return ILFormat(0, IL_DXT2);
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| 124 | case PF_DXT3: return ILFormat(0, IL_DXT3);
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| 125 | case PF_DXT4: return ILFormat(0, IL_DXT4);
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| 126 | case PF_DXT5: return ILFormat(0, IL_DXT5);
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| 127 | default: return ILFormat();
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| 128 | }
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| 129 | }
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| 130 |
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| 131 | //-----------------------------------------------------------------------
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| 132 | /// Helper functions for DevIL to Ogre conversion
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| 133 | inline void packI(uint8 r, uint8 g, uint8 b, uint8 a, PixelFormat pf, void* dest)
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| 134 | {
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| 135 | PixelUtil::packColour(r, g, b, a, pf, dest);
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| 136 | }
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| 137 | inline void packI(uint16 r, uint16 g, uint16 b, uint16 a, PixelFormat pf, void* dest)
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| 138 | {
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| 139 | PixelUtil::packColour((float)r/65535.0f, (float)g/65535.0f,
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| 140 | (float)b/65535.0f, (float)a/65535.0f, pf, dest);
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| 141 | }
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| 142 | inline void packI(float r, float g, float b, float a, PixelFormat pf, void* dest)
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| 143 | {
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| 144 | PixelUtil::packColour(r, g, b, a, pf, dest);
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| 145 | }
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| 146 | template <typename T> void ilToOgreInternal(uint8 *tar, PixelFormat ogrefmt,
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| 147 | T r, T g, T b, T a)
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| 148 | {
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| 149 | const int ilfmt = ilGetInteger( IL_IMAGE_FORMAT );
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| 150 | T *src = (T*)ilGetData();
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| 151 | T *srcend = (T*)((uint8*)ilGetData() + ilGetInteger( IL_IMAGE_SIZE_OF_DATA ));
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| 152 | const size_t elemSize = PixelUtil::getNumElemBytes(ogrefmt);
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| 153 | while(src < srcend) {
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| 154 | switch(ilfmt) {
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| 155 | case IL_RGB:
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| 156 | r = src[0]; g = src[1]; b = src[2];
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| 157 | src += 3;
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| 158 | break;
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| 159 | case IL_BGR:
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| 160 | b = src[0]; g = src[1]; r = src[2];
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| 161 | src += 3;
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| 162 | break;
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| 163 | case IL_LUMINANCE:
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| 164 | r = src[0]; g = src[0]; b = src[0];
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| 165 | src += 1;
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| 166 | break;
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| 167 | case IL_LUMINANCE_ALPHA:
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| 168 | r = src[0]; g = src[0]; b = src[0]; a = src[1];
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| 169 | src += 2;
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| 170 | break;
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| 171 | case IL_RGBA:
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| 172 | r = src[0]; g = src[1]; b = src[2]; a = src[3];
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| 173 | src += 4;
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| 174 | break;
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| 175 | case IL_BGRA:
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| 176 | b = src[0]; g = src[1]; r = src[2]; a = src[3];
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| 177 | src += 4;
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| 178 | break;
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| 179 | default:
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| 180 | return;
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| 181 | }
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| 182 | packI(r, g, b, a, ogrefmt, tar);
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| 183 | tar += elemSize;
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| 184 | }
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| 185 |
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| 186 | }
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| 187 | //-----------------------------------------------------------------------
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| 188 | /// Utility function to convert IL data types to UNSIGNED_
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| 189 | ILenum ILabs(ILenum in) {
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| 190 | switch(in) {
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| 191 | case IL_INT: return IL_UNSIGNED_INT;
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| 192 | case IL_BYTE: return IL_UNSIGNED_BYTE;
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| 193 | case IL_SHORT: return IL_UNSIGNED_SHORT;
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| 194 | default: return in;
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| 195 | }
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| 196 | }
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| 197 | //-----------------------------------------------------------------------
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| 198 | void ILUtil::toOgre(const PixelBox &dst)
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| 199 | {
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| 200 | if(!dst.isConsecutive())
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| 201 | OGRE_EXCEPT( Exception::UNIMPLEMENTED_FEATURE,
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| 202 | "Destination must currently be consecutive",
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| 203 | "ILUtil::ilToOgre" ) ;
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| 204 | if(dst.getWidth() != static_cast<size_t>(ilGetInteger( IL_IMAGE_WIDTH )) ||
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| 205 | dst.getHeight() != static_cast<size_t>(ilGetInteger( IL_IMAGE_HEIGHT )) ||
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| 206 | dst.getDepth() != static_cast<size_t>(ilGetInteger( IL_IMAGE_DEPTH )))
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| 207 | OGRE_EXCEPT( Exception::ERR_INVALIDPARAMS,
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| 208 | "Destination dimensions must equal IL dimension",
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| 209 | "ILUtil::ilToOgre" ) ;
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| 210 |
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| 211 | int ilfmt = ilGetInteger( IL_IMAGE_FORMAT );
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| 212 | int iltp = ilGetInteger( IL_IMAGE_TYPE );
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| 213 |
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| 214 | // Check if in-memory format just matches
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| 215 | // If yes, we can just copy it and save conversion
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| 216 | ILFormat ifmt = OgreFormat2ilFormat( dst.format );
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| 217 | if(ifmt.format == ilfmt && ILabs(ifmt.type) == ILabs(iltp)) {
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| 218 | memcpy(dst.data, ilGetData(), ilGetInteger( IL_IMAGE_SIZE_OF_DATA ));
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| 219 | return;
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| 220 | }
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| 221 | // Try if buffer is in a known OGRE format so we can use OGRE its
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| 222 | // conversion routines
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| 223 | PixelFormat bufFmt = ilFormat2OgreFormat((int)ilfmt, (int)iltp);
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| 224 |
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| 225 | ifmt = OgreFormat2ilFormat( bufFmt );
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| 226 | if(ifmt.format == ilfmt && ILabs(ifmt.type) == ILabs(iltp))
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| 227 | {
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| 228 | // IL format matches another OGRE format
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| 229 | PixelBox src(dst.getWidth(), dst.getHeight(), dst.getDepth(), bufFmt, ilGetData());
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| 230 | PixelUtil::bulkPixelConversion(src, dst);
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| 231 | return;
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| 232 | }
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| 233 |
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| 234 | // Thee extremely slow method
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| 235 | if(iltp == IL_UNSIGNED_BYTE || iltp == IL_BYTE)
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| 236 | {
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| 237 | ilToOgreInternal(static_cast<uint8*>(dst.data), dst.format, (uint8)0x00,(uint8)0x00,(uint8)0x00,(uint8)0xFF);
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| 238 | }
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| 239 | else if(iltp == IL_FLOAT)
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| 240 | {
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| 241 | ilToOgreInternal(static_cast<uint8*>(dst.data), dst.format, 0.0f,0.0f,0.0f,1.0f);
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| 242 | }
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| 243 | else if(iltp == IL_SHORT || iltp == IL_UNSIGNED_SHORT)
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| 244 | {
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| 245 | ilToOgreInternal(static_cast<uint8*>(dst.data), dst.format,
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| 246 | (uint16)0x0000,(uint16)0x0000,(uint16)0x0000,(uint16)0xFFFF);
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| 247 | }
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| 248 | else
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| 249 | {
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| 250 | OGRE_EXCEPT( Exception::UNIMPLEMENTED_FEATURE,
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| 251 | "Cannot convert this DevIL type",
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| 252 | "ILUtil::ilToOgre" ) ;
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| 253 | }
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| 254 | }
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| 255 | //-----------------------------------------------------------------------
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| 256 | void ILUtil::fromOgre(const PixelBox &src)
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| 257 | {
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| 258 | // ilTexImage http://openil.sourceforge.net/docs/il/f00059.htm
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| 259 | ILFormat ifmt = OgreFormat2ilFormat( src.format );
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| 260 | if(src.isConsecutive() && ifmt.isValid())
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| 261 | {
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| 262 | // The easy case, the buffer is laid out in memory just like
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| 263 | // we want it to be and is in a format DevIL can understand directly
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| 264 | // We could even save the copy if DevIL would let us
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| 265 | ilTexImage(static_cast<ILuint>(src.getWidth()),
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| 266 | static_cast<ILuint>(src.getHeight()),
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| 267 | static_cast<ILuint>(src.getDepth()), ifmt.numberOfChannels,
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| 268 | ifmt.format, ifmt.type, src.data);
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| 269 | }
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| 270 | else if(ifmt.isValid())
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| 271 | {
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| 272 | // The format can be understood directly by DevIL. The only
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| 273 | // problem is that ilTexImage expects our image data consecutively
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| 274 | // so we cannot use that directly.
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| 275 |
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| 276 | // Let DevIL allocate the memory for us, and copy the data consecutively
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| 277 | // to its memory
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| 278 | ilTexImage(static_cast<ILuint>(src.getWidth()),
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| 279 | static_cast<ILuint>(src.getHeight()),
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| 280 | static_cast<ILuint>(src.getDepth()), ifmt.numberOfChannels,
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| 281 | ifmt.format, ifmt.type, 0);
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| 282 | PixelBox dst(src.getWidth(), src.getHeight(), src.getDepth(), src.format, ilGetData());
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| 283 | PixelUtil::bulkPixelConversion(src, dst);
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| 284 | }
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| 285 | else
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| 286 | {
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| 287 | // Here it gets ugly. We're stuck with a pixel format that DevIL
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| 288 | // can't do anything with. We will do a bulk pixel conversion and
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| 289 | // then feed it to DevIL anyway. The problem is finding the best
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| 290 | // format to convert to.
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| 291 |
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| 292 | // most general format supported by OGRE and DevIL
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| 293 | PixelFormat fmt = PixelUtil::hasAlpha(src.format)?PF_FLOAT32_RGBA:PF_FLOAT32_RGB;
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| 294 |
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| 295 | // Make up a pixel format
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| 296 | // We don't have to consider luminance formats as they have
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| 297 | // straight conversions to DevIL, just weird permutations of RGBA an LA
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| 298 | int depths[4];
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| 299 | PixelUtil::getBitDepths(src.format, depths);
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| 300 |
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| 301 | // Native endian format with all bit depths<8 can safely and quickly be
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| 302 | // converted to 24/32 bit
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| 303 | if(PixelUtil::isNativeEndian(src.format) &&
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| 304 | depths[0]<=8 && depths[1]<=8 && depths[2]<=8 && depths[3]<=8) {
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| 305 | if(PixelUtil::hasAlpha(src.format)) {
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| 306 | fmt = PF_A8R8G8B8;
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| 307 | } else {
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| 308 | fmt = PF_R8G8B8;
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| 309 | }
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| 310 | }
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| 311 |
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| 312 | // Let DevIL allocate the memory for us, then do the conversion ourselves
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| 313 | ifmt = OgreFormat2ilFormat( fmt );
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| 314 | ilTexImage(static_cast<ILuint>(src.getWidth()),
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| 315 | static_cast<ILuint>(src.getHeight()),
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| 316 | static_cast<ILuint>(src.getDepth()), ifmt.numberOfChannels,
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| 317 | ifmt.format, ifmt.type, 0);
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| 318 | PixelBox dst(src.getWidth(), src.getHeight(), src.getDepth(), fmt, ilGetData());
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| 319 | PixelUtil::bulkPixelConversion(src, dst);
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| 320 | }
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| 321 | }
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| 322 |
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| 323 | }
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