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<h1>vtkGaussianBlurPass Class Reference</h1><!-- doxytag: class="vtkGaussianBlurPass" --><!-- doxytag: inherits="vtkRenderPass" --><code>#include <<a class="el" href="a05192.html">vtkGaussianBlurPass.h</a>></code>
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Inheritance diagram for vtkGaussianBlurPass:</div>
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Collaboration diagram for vtkGaussianBlurPass:</div>
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<a href="a09966.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>
Implement a post-processing Gaussian blur render pass.
<p>
Blur the image renderered by its delegate. Blurring uses a Gaussian low-pass filter with a 5x5 kernel.<p>
This pass expects an initialized depth buffer and color buffer. Initialized buffers means they have been cleared with farest z-value and background color/gradient/transparent color. An opaque pass may have been performed right after the initialization.<p>
The delegate is used once.<p>
Its delegate is usually set to a <a class="el" href="a00230.html" title="Implement the camera render pass.">vtkCameraPass</a> or to a post-processing pass.<p>
This pass requires a OpenGL context that supports texture objects (TO), framebuffer objects (FBO) and GLSL. If not, it will emit an error message and will render its delegate and return.<p>
<dl class="user" compact><dt><b>Implementation:</b></dt><dd>As the filter is separable, it first blurs the image horizontally and then vertically. This reduces the number of texture sampling to 5 per pass. In addition, as texture sampling can already blend texel values in linear mode, by adjusting the texture coordinate accordingly, only 3 texture sampling are actually necessary. Reference: OpenGL Bloom Toturial by Philip Rideout, section Exploit Hardware Filtering <a href="http://prideout.net/bloom/index.php#Sneaky">http://prideout.net/bloom/index.php#Sneaky</a></dd></dl>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="a01485.html" title="Perform part of the rendering of a vtkRenderer.">vtkRenderPass</a></dd></dl>
<dl class="user" compact><dt><b>Tests:</b></dt><dd><a class="el" href="c2_vtk_t_6.html#c2_vtk_t_vtkGaussianBlurPass">vtkGaussianBlurPass (Tests)</a> </dd></dl>
<p>Definition at line <a class="el" href="a05192.html#l00063">63</a> of file <a class="el" href="a05192.html">vtkGaussianBlurPass.h</a>.</p>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">typedef <a class="el" href="a01485.html">vtkRenderPass</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00574.html#c40da0eae7cece3a62c82e46e0bb7eff">Superclass</a></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="a00574.html#05148e7c5ac94d6f802c2f48017e0677">GetClassName</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="a00574.html#7649fea5a9ee1cc5711a50f184b7f0a5">IsA</a> (const char *type)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00574.html#b1bbb6b122fe8333c91af05515001522">PrintSelf</a> (ostream &os, <a class="el" href="a00869.html">vtkIndent</a> indent)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00574.html#813d54f22cd0f28318677b761c24a93e">Render</a> (const <a class="el" href="a01487.html">vtkRenderState</a> *s)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00574.html#5002a8f22a8f5d1a2961210771241033">ReleaseGraphicsResources</a> (<a class="el" href="a01886.html">vtkWindow</a> *w)</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual <a class="el" href="a01485.html">vtkRenderPass</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="a00574.html#5769399c84a6466c31f600e1f488fa2a">GetDelegatePass</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00574.html#af3bab6fe2d65781c78c1914a119ef39">SetDelegatePass</a> (<a class="el" href="a01485.html">vtkRenderPass</a> *delegatePass)</td></tr>
<tr><td colspan="2"><br><h2>Static Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">static <a class="el" href="a00574.html">vtkGaussianBlurPass</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="a00574.html#6fc59f4729a192e4e5944ead37bca956">New</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">static int </td><td class="memItemRight" valign="bottom"><a class="el" href="a00574.html#9ca0d675b4146fb14a9fe8ab261af976">IsTypeOf</a> (const char *type)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">static <a class="el" href="a00574.html">vtkGaussianBlurPass</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="a00574.html#aa4abe3b400e9e2b1742755a9b0f3c61">SafeDownCast</a> (<a class="el" href="a01084.html">vtkObject</a> *o)</td></tr>
<tr><td colspan="2"><br><h2>Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00574.html#cf19703f679ebd4b5d2acdaeb788837f">vtkGaussianBlurPass</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="a00574.html#c3e72f5f7039ed9cc0eb74b0a88fc0db">~vtkGaussianBlurPass</a> ()</td></tr>
<tr><td colspan="2"><br><h2>Protected Attributes</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="a01485.html">vtkRenderPass</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="a00574.html#a09f00de7cdd002b14f0987a6ced5e77">DelegatePass</a></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="a00563.html">vtkFrameBufferObject</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="a00574.html#29208dd3a6fc7be2c34c7a06bd1d7ed0">FrameBufferObject</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="a01701.html">vtkTextureObject</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="a00574.html#73d367263dc181dda00ffafe94fadb7b">Pass1</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="a01701.html">vtkTextureObject</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="a00574.html#68db83d352bc7b929727bff94a1babcb">Pass2</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="a01538.html">vtkShaderProgram2</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="a00574.html#9042801c51d841f2569e0494907c5de8">BlurProgram</a></td></tr>
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<hr><h2>Member Typedef Documentation</h2>
<a class="anchor" name="c40da0eae7cece3a62c82e46e0bb7eff"></a><!-- doxytag: member="vtkGaussianBlurPass::Superclass" ref="c40da0eae7cece3a62c82e46e0bb7eff" args="" -->
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<td class="memname">typedef <a class="el" href="a01485.html">vtkRenderPass</a> <a class="el" href="a01485.html">vtkGaussianBlurPass::Superclass</a> </td>
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<p>Reimplemented from <a class="el" href="a01485.html#7d46e12c5bb3c6f3bca9e6384b902e85">vtkRenderPass</a>.</p>
<p>Definition at line <a class="el" href="a05192.html#l00067">67</a> of file <a class="el" href="a05192.html">vtkGaussianBlurPass.h</a>.</p>
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<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="cf19703f679ebd4b5d2acdaeb788837f"></a><!-- doxytag: member="vtkGaussianBlurPass::vtkGaussianBlurPass" ref="cf19703f679ebd4b5d2acdaeb788837f" args="()" -->
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<td class="memname">vtkGaussianBlurPass::vtkGaussianBlurPass </td>
<td>(</td>
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<td><code> [protected]</code></td>
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<p>
Default constructor. DelegatePass is set to NULL.
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<a class="anchor" name="c3e72f5f7039ed9cc0eb74b0a88fc0db"></a><!-- doxytag: member="vtkGaussianBlurPass::~vtkGaussianBlurPass" ref="c3e72f5f7039ed9cc0eb74b0a88fc0db" args="()" -->
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<td class="memname">virtual vtkGaussianBlurPass::~vtkGaussianBlurPass </td>
<td>(</td>
<td class="paramname"> </td>
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<td><code> [protected, virtual]</code></td>
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Destructor.
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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="6fc59f4729a192e4e5944ead37bca956"></a><!-- doxytag: member="vtkGaussianBlurPass::New" ref="6fc59f4729a192e4e5944ead37bca956" args="()" -->
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<td class="memname">static <a class="el" href="a00574.html">vtkGaussianBlurPass</a>* vtkGaussianBlurPass::New </td>
<td>(</td>
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<td><code> [static]</code></td>
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Create an object with Debug turned off, modified time initialized to zero, and reference counting on.
<p>Reimplemented from <a class="el" href="a01084.html#4d5b227267c076d6f9e38483370b6612">vtkObject</a>.</p>
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<a class="anchor" name="05148e7c5ac94d6f802c2f48017e0677"></a><!-- doxytag: member="vtkGaussianBlurPass::GetClassName" ref="05148e7c5ac94d6f802c2f48017e0677" args="()" -->
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<td class="memname">virtual const char* vtkGaussianBlurPass::GetClassName </td>
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<p>Reimplemented from <a class="el" href="a01485.html#4fa0f5974948dd3e880f0e38609b240b">vtkRenderPass</a>.</p>
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<a class="anchor" name="9ca0d675b4146fb14a9fe8ab261af976"></a><!-- doxytag: member="vtkGaussianBlurPass::IsTypeOf" ref="9ca0d675b4146fb14a9fe8ab261af976" args="(const char *type)" -->
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<td class="memname">static int vtkGaussianBlurPass::IsTypeOf </td>
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<td class="paramtype">const char * </td>
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Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h.
<p>Reimplemented from <a class="el" href="a01485.html#abd3fc851cd94a491579a4657cc08375">vtkRenderPass</a>.</p>
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<a class="anchor" name="7649fea5a9ee1cc5711a50f184b7f0a5"></a><!-- doxytag: member="vtkGaussianBlurPass::IsA" ref="7649fea5a9ee1cc5711a50f184b7f0a5" args="(const char *type)" -->
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<td class="memname">virtual int vtkGaussianBlurPass::IsA </td>
<td>(</td>
<td class="paramtype">const char * </td>
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<td> ) </td>
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Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h.
<p>Reimplemented from <a class="el" href="a01485.html#5a216c68cd9bfec1bfcc2cf01f4d45c4">vtkRenderPass</a>.</p>
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<a class="anchor" name="aa4abe3b400e9e2b1742755a9b0f3c61"></a><!-- doxytag: member="vtkGaussianBlurPass::SafeDownCast" ref="aa4abe3b400e9e2b1742755a9b0f3c61" args="(vtkObject *o)" -->
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<td class="memname">static <a class="el" href="a00574.html">vtkGaussianBlurPass</a>* vtkGaussianBlurPass::SafeDownCast </td>
<td>(</td>
<td class="paramtype"><a class="el" href="a01084.html">vtkObject</a> * </td>
<td class="paramname"> <em>o</em> </td>
<td> ) </td>
<td><code> [static]</code></td>
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<p>Reimplemented from <a class="el" href="a01485.html#fc4a69eda64c5df5a01bf500eadaccd5">vtkRenderPass</a>.</p>
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<a class="anchor" name="b1bbb6b122fe8333c91af05515001522"></a><!-- doxytag: member="vtkGaussianBlurPass::PrintSelf" ref="b1bbb6b122fe8333c91af05515001522" args="(ostream &os, vtkIndent indent)" -->
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<td class="memname">void vtkGaussianBlurPass::PrintSelf </td>
<td>(</td>
<td class="paramtype">ostream & </td>
<td class="paramname"> <em>os</em>, </td>
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<td class="paramname"> <em>indent</em></td><td> </td>
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<td>)</td>
<td></td><td></td><td><code> [virtual]</code></td>
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Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use <a class="el" href="a01085.html#edadf6378465fd81c2592ef64262e2a5">Print()</a> instead) but used in the hierarchical print process to combine the output of several classes.
<p>Reimplemented from <a class="el" href="a01485.html#c9a79594183476baa2f8ff082e76222e">vtkRenderPass</a>.</p>
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<a class="anchor" name="813d54f22cd0f28318677b761c24a93e"></a><!-- doxytag: member="vtkGaussianBlurPass::Render" ref="813d54f22cd0f28318677b761c24a93e" args="(const vtkRenderState *s)" -->
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<td class="memname">virtual void vtkGaussianBlurPass::Render </td>
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<td class="paramtype">const <a class="el" href="a01487.html">vtkRenderState</a> * </td>
<td class="paramname"> <em>s</em> </td>
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<td><code> [virtual]</code></td>
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Perform rendering according to a render state <code>s</code>. <dl class="pre" compact><dt><b>Precondition:</b></dt><dd>s_exists: s!=0 </dd></dl>
<p>Implements <a class="el" href="a01485.html#e294a805df37151e743034fd59c2f377">vtkRenderPass</a>.</p>
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<a class="anchor" name="5002a8f22a8f5d1a2961210771241033"></a><!-- doxytag: member="vtkGaussianBlurPass::ReleaseGraphicsResources" ref="5002a8f22a8f5d1a2961210771241033" args="(vtkWindow *w)" -->
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<td class="memname">void vtkGaussianBlurPass::ReleaseGraphicsResources </td>
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<td class="paramtype"><a class="el" href="a01886.html">vtkWindow</a> * </td>
<td class="paramname"> <em>w</em> </td>
<td> ) </td>
<td><code> [virtual]</code></td>
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Release graphics resources and ask components to release their own resources. <dl class="pre" compact><dt><b>Precondition:</b></dt><dd>w_exists: w!=0 </dd></dl>
<p>Reimplemented from <a class="el" href="a01485.html#8190d964eef4e437093bba6761e3371b">vtkRenderPass</a>.</p>
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<a class="anchor" name="5769399c84a6466c31f600e1f488fa2a"></a><!-- doxytag: member="vtkGaussianBlurPass::GetDelegatePass" ref="5769399c84a6466c31f600e1f488fa2a" args="()" -->
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<td class="memname">virtual <a class="el" href="a01485.html">vtkRenderPass</a>* vtkGaussianBlurPass::GetDelegatePass </td>
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<td><code> [virtual]</code></td>
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Delegate for rendering the image to be blurred. If it is NULL, nothing will be rendered and a warning will be emitted. It is usually set to a <a class="el" href="a00230.html" title="Implement the camera render pass.">vtkCameraPass</a> or to a post-processing pass. Initial value is a NULL pointer.
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<a class="anchor" name="af3bab6fe2d65781c78c1914a119ef39"></a><!-- doxytag: member="vtkGaussianBlurPass::SetDelegatePass" ref="af3bab6fe2d65781c78c1914a119ef39" args="(vtkRenderPass *delegatePass)" -->
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<td class="memname">virtual void vtkGaussianBlurPass::SetDelegatePass </td>
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<td class="paramtype"><a class="el" href="a01485.html">vtkRenderPass</a> * </td>
<td class="paramname"> <em>delegatePass</em> </td>
<td> ) </td>
<td><code> [virtual]</code></td>
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Delegate for rendering the image to be blurred. If it is NULL, nothing will be rendered and a warning will be emitted. It is usually set to a <a class="el" href="a00230.html" title="Implement the camera render pass.">vtkCameraPass</a> or to a post-processing pass. Initial value is a NULL pointer.
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<hr><h2>Member Data Documentation</h2>
<a class="anchor" name="a09f00de7cdd002b14f0987a6ced5e77"></a><!-- doxytag: member="vtkGaussianBlurPass::DelegatePass" ref="a09f00de7cdd002b14f0987a6ced5e77" args="" -->
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<td class="memname"><a class="el" href="a01485.html">vtkRenderPass</a>* <a class="el" href="a00574.html#a09f00de7cdd002b14f0987a6ced5e77">vtkGaussianBlurPass::DelegatePass</a><code> [protected]</code> </td>
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<p>Definition at line <a class="el" href="a05192.html#l00094">94</a> of file <a class="el" href="a05192.html">vtkGaussianBlurPass.h</a>.</p>
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<a class="anchor" name="29208dd3a6fc7be2c34c7a06bd1d7ed0"></a><!-- doxytag: member="vtkGaussianBlurPass::FrameBufferObject" ref="29208dd3a6fc7be2c34c7a06bd1d7ed0" args="" -->
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<td class="memname"><a class="el" href="a00563.html">vtkFrameBufferObject</a>* <a class="el" href="a00574.html#29208dd3a6fc7be2c34c7a06bd1d7ed0">vtkGaussianBlurPass::FrameBufferObject</a><code> [protected]</code> </td>
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Graphics resources.
<p>Definition at line <a class="el" href="a05192.html#l00098">98</a> of file <a class="el" href="a05192.html">vtkGaussianBlurPass.h</a>.</p>
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<a class="anchor" name="73d367263dc181dda00ffafe94fadb7b"></a><!-- doxytag: member="vtkGaussianBlurPass::Pass1" ref="73d367263dc181dda00ffafe94fadb7b" args="" -->
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<td class="memname"><a class="el" href="a01701.html">vtkTextureObject</a>* <a class="el" href="a00574.html#73d367263dc181dda00ffafe94fadb7b">vtkGaussianBlurPass::Pass1</a><code> [protected]</code> </td>
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Graphics resources.
<p>Definition at line <a class="el" href="a05192.html#l00099">99</a> of file <a class="el" href="a05192.html">vtkGaussianBlurPass.h</a>.</p>
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<a class="anchor" name="68db83d352bc7b929727bff94a1babcb"></a><!-- doxytag: member="vtkGaussianBlurPass::Pass2" ref="68db83d352bc7b929727bff94a1babcb" args="" -->
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<td class="memname"><a class="el" href="a01701.html">vtkTextureObject</a>* <a class="el" href="a00574.html#68db83d352bc7b929727bff94a1babcb">vtkGaussianBlurPass::Pass2</a><code> [protected]</code> </td>
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Graphics resources.
<p>Definition at line <a class="el" href="a05192.html#l00100">100</a> of file <a class="el" href="a05192.html">vtkGaussianBlurPass.h</a>.</p>
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<a class="anchor" name="9042801c51d841f2569e0494907c5de8"></a><!-- doxytag: member="vtkGaussianBlurPass::BlurProgram" ref="9042801c51d841f2569e0494907c5de8" args="" -->
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<td class="memname"><a class="el" href="a01538.html">vtkShaderProgram2</a>* <a class="el" href="a00574.html#9042801c51d841f2569e0494907c5de8">vtkGaussianBlurPass::BlurProgram</a><code> [protected]</code> </td>
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<p>
Graphics resources.
<p>Definition at line <a class="el" href="a05192.html#l00101">101</a> of file <a class="el" href="a05192.html">vtkGaussianBlurPass.h</a>.</p>
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<hr>The documentation for this class was generated from the following file:<ul>
<li>dox/Rendering/<a class="el" href="a05192.html">vtkGaussianBlurPass.h</a></ul>
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<hr size="1"><address style="text-align: right;"><small>Generated on Wed Jun 3 19:03:46 2009 for VTK by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>
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