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<h1>Ogre::GLPixelUtil Class Reference</h1>Class to do pixel format mapping between GL and OGRE.
<a href="#_details">More...</a>
<p>
<code>#include <<a class="el" href="OgreGLPixelFormat_8h-source.html">OgreGLPixelFormat.h</a>></code>
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<a href="classOgre_1_1GLPixelUtil-members.html">List of all members.</a><table border=0 cellpadding=0 cellspacing=0>
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<tr><td colspan=2><br><h2>Static Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="OgreGLPrerequisites_8h.html#a39">GLenum</a> </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1GLPixelUtil.html#Ogre_1_1GLPixelUtile0">getGLOriginFormat</a> (<a class="el" href="namespaceOgre.html#a666">PixelFormat</a> mFormat)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Takes the OGRE pixel format and returns the appropriate GL one. <a href="#Ogre_1_1GLPixelUtile0"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="OgreGLPrerequisites_8h.html#a39">GLenum</a> </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1GLPixelUtil.html#Ogre_1_1GLPixelUtile1">getGLOriginDataType</a> (<a class="el" href="namespaceOgre.html#a666">PixelFormat</a> mFormat)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Takes the OGRE pixel format and returns type that must be provided to GL as data type for reading it into the GPU. <a href="#Ogre_1_1GLPixelUtile1"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="OgreGLPrerequisites_8h.html#a39">GLenum</a> </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1GLPixelUtil.html#Ogre_1_1GLPixelUtile2">getClosestGLInternalFormat</a> (<a class="el" href="namespaceOgre.html#a666">PixelFormat</a> mFormat)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Takes the OGRE pixel format and returns the type that must be provided to GL as internal format. <a href="#Ogre_1_1GLPixelUtile2"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="namespaceOgre.html#a666">PixelFormat</a> </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1GLPixelUtil.html#Ogre_1_1GLPixelUtile3">getClosestOGREFormat</a> (<a class="el" href="OgreGLPrerequisites_8h.html#a39">GLenum</a> fmt)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Function to get the closest matching OGRE format to an internal GL format. <a href="#Ogre_1_1GLPixelUtile3"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>size_t </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1GLPixelUtil.html#Ogre_1_1GLPixelUtile4">getMaxMipmaps</a> (size_t width, size_t height, size_t depth, <a class="el" href="namespaceOgre.html#a666">PixelFormat</a> format)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the maximum number of Mipmaps that can be generated until we reach the mininum format possible. <a href="#Ogre_1_1GLPixelUtile4"></a><br><br></td></tr>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
Class to do pixel format mapping between GL and OGRE.
<p>
<p>
Definition at line <a class="el" href="OgreGLPixelFormat_8h-source.html#l00034">34</a> of file <a class="el" href="OgreGLPixelFormat_8h-source.html">OgreGLPixelFormat.h</a>.<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="Ogre_1_1GLPixelUtile2" doxytag="Ogre::GLPixelUtil::getClosestGLInternalFormat" ></a><p>
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<td class="md" nowrap valign="top"> <a class="el" href="OgreGLPrerequisites_8h.html#a39">GLenum</a> Ogre::GLPixelUtil::getClosestGLInternalFormat </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="namespaceOgre.html#a666">PixelFormat</a> </td>
<td class="mdname1" valign="top" nowrap> <em>mFormat</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [static]</code></td>
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<p>
Takes the OGRE pixel format and returns the type that must be provided to GL as internal format.
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</td>
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<a class="anchor" name="Ogre_1_1GLPixelUtile3" doxytag="Ogre::GLPixelUtil::getClosestOGREFormat" ></a><p>
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<td class="md" nowrap valign="top"> <a class="el" href="namespaceOgre.html#a666">PixelFormat</a> Ogre::GLPixelUtil::getClosestOGREFormat </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="OgreGLPrerequisites_8h.html#a39">GLenum</a> </td>
<td class="mdname1" valign="top" nowrap> <em>fmt</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [static]</code></td>
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<p>
Function to get the closest matching OGRE format to an internal GL format.
<p>
To be precise, the format will be chosen that is most efficient to transfer to the card without losing precision. <dl compact><dt><b>Remarks:</b></dt><dd>It is valid for this function to always return PF_A8R8G8B8.</dd></dl>
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<a class="anchor" name="Ogre_1_1GLPixelUtile1" doxytag="Ogre::GLPixelUtil::getGLOriginDataType" ></a><p>
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<td class="md" nowrap valign="top"> <a class="el" href="OgreGLPrerequisites_8h.html#a39">GLenum</a> Ogre::GLPixelUtil::getGLOriginDataType </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="namespaceOgre.html#a666">PixelFormat</a> </td>
<td class="mdname1" valign="top" nowrap> <em>mFormat</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [static]</code></td>
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<p>
Takes the OGRE pixel format and returns type that must be provided to GL as data type for reading it into the GPU.
<p>
<dl compact><dt><b>Returns:</b></dt><dd>a GLenum describing the data type, or 0 if there is no exactly matching one (and conversion is needed)</dd></dl>
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<a class="anchor" name="Ogre_1_1GLPixelUtile0" doxytag="Ogre::GLPixelUtil::getGLOriginFormat" ></a><p>
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<td class="md" nowrap valign="top"> <a class="el" href="OgreGLPrerequisites_8h.html#a39">GLenum</a> Ogre::GLPixelUtil::getGLOriginFormat </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="namespaceOgre.html#a666">PixelFormat</a> </td>
<td class="mdname1" valign="top" nowrap> <em>mFormat</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [static]</code></td>
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<p>
Takes the OGRE pixel format and returns the appropriate GL one.
<p>
<dl compact><dt><b>Returns:</b></dt><dd>a GLenum describing the format, or 0 if there is no exactly matching one (and conversion is needed)</dd></dl>
</td>
</tr>
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<a class="anchor" name="Ogre_1_1GLPixelUtile4" doxytag="Ogre::GLPixelUtil::getMaxMipmaps" ></a><p>
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<td class="md" nowrap valign="top"> size_t Ogre::GLPixelUtil::getMaxMipmaps </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">size_t </td>
<td class="mdname" nowrap> <em>width</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>size_t </td>
<td class="mdname" nowrap> <em>height</em>, </td>
</tr>
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<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>size_t </td>
<td class="mdname" nowrap> <em>depth</em>, </td>
</tr>
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<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="namespaceOgre.html#a666">PixelFormat</a> </td>
<td class="mdname" nowrap> <em>format</em></td>
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<td></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [static]</code></td>
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<p>
Returns the maximum number of Mipmaps that can be generated until we reach the mininum format possible.
<p>
This does not count the base level. <dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign=top><em>width</em> </td><td>The width of the area </td></tr>
<tr><td valign=top><em>height</em> </td><td>The height of the area </td></tr>
<tr><td valign=top><em>depth</em> </td><td>The depth of the area </td></tr>
<tr><td valign=top><em>format</em> </td><td>The format of the area </td></tr>
</table>
</dl>
<dl compact><dt><b>Remarks:</b></dt><dd>In case that the format is non-compressed, this simply returns how many times we can divide this texture in 2 until we reach 1x1. For compressed formats, constraints apply on minimum size and alignment so this might differ.</dd></dl>
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<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="OgreGLPixelFormat_8h-source.html">OgreGLPixelFormat.h</a></ul>
<p>
Copyright © 2000-2005 by The OGRE Team<br />
Last modified Wed Feb 23 00:30:28 2005
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