File: CastleRenderer.TGLRenderer.html

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
<html>
<head>
<title>Castle Game Engine: CastleRenderer: Class TGLRenderer</title>
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<h2>Castle Game Engine</h2><p><a href="introduction.html" class="navigation">Introduction</a></p><p><a href="AllUnits.html" class="navigation">Units</a></p><p><a href="ClassHierarchy.html" class="navigation">Class Hierarchy</a></p><p><a href="AllClasses.html" class="navigation">Classes, Interfaces, Objects and Records</a></p><p><a href="AllTypes.html" class="navigation">Types</a></p><p><a href="AllVariables.html" class="navigation">Variables</a></p><p><a href="AllConstants.html" class="navigation">Constants</a></p><p><a href="AllFunctions.html" class="navigation">Functions and Procedures</a></p><p><a href="AllIdentifiers.html" class="navigation">Identifiers</a></p></td><td class="content">
<a name="TGLRenderer"></a><h1 class="cio">Class TGLRenderer</h1>
<table class="sections wide_list">
<tr>
<td><a class="section" href="#PasDoc-Description">Description</a></td><td><a class="section" href="#PasDoc-Hierarchy">Hierarchy</a></td><td><a class="section" href="#PasDoc-Fields">Fields</a></td><td><a class="section" href="#PasDoc-Methods">Methods</a></td><td><a class="section" href="#PasDoc-Properties">Properties</a></td></tr></table>
<a name="PasDoc-Description"></a><h2 class="unit">Unit</h2>
<p class="unitlink">
<a  href="CastleRenderer.html">CastleRenderer</a></p>
<h2 class="declaration">Declaration</h2>
<p class="declaration">
<code>type TGLRenderer = class(TObject)</code></p>
<h2 class="description">Description</h2>
<a name="PasDoc-Hierarchy"></a><h2 class="hierarchy">Hierarchy</h2>
<ul class="hierarchy"><li class="ancestor">TObject</li>
<li class="thisitem">TGLRenderer</li></ul><h2 class="overview">Overview</h2>
<a name="PasDoc-Fields"></a><h3 class="summary">Fields</h3>
<table class="summary wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code><b><a  href="CastleRenderer.TGLRenderer.html#PrepareRenderShape">PrepareRenderShape</a></b>: Cardinal;</code></td>
</tr>
</table>
<a name="PasDoc-Methods"></a><h3 class="summary">Methods</h3>
<table class="summary wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>constructor <b><a  href="CastleRenderer.TGLRenderer.html#Create">Create</a></b>(AttributesClass: <a  href="CastleRenderer.html#TRenderingAttributesClass">TRenderingAttributesClass</a>; ACache: <a  href="CastleRenderer.TGLRendererContextCache.html">TGLRendererContextCache</a>);</code></td>
</tr>
<tr class="list2">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>destructor <b><a  href="CastleRenderer.TGLRenderer.html#Destroy">Destroy</a></b>; override;</code></td>
</tr>
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>procedure <b><a  href="CastleRenderer.TGLRenderer.html#Prepare">Prepare</a></b>(Shape: <a  href="CastleRenderer.TX3DRendererShape.html">TX3DRendererShape</a>);</code></td>
</tr>
<tr class="list2">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>procedure <b><a  href="CastleRenderer.TGLRenderer.html#UnprepareTexture">UnprepareTexture</a></b>(Node: <a  href="X3DNodes.TAbstractTextureNode.html">TAbstractTextureNode</a>);</code></td>
</tr>
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>procedure <b><a  href="CastleRenderer.TGLRenderer.html#UnprepareAll">UnprepareAll</a></b>;</code></td>
</tr>
<tr class="list2">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>procedure <b><a  href="CastleRenderer.TGLRenderer.html#RenderBegin">RenderBegin</a></b>(ABaseLights: <a  href="X3DNodes.TLightInstancesList.html">TLightInstancesList</a>; LightRenderEvent: <a  href="CastleRenderer.html#TLightRenderEvent">TLightRenderEvent</a>; const APass: <a  href="Castle3D.html#TRenderingPass">TRenderingPass</a>);</code></td>
</tr>
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>procedure <b><a  href="CastleRenderer.TGLRenderer.html#RenderEnd">RenderEnd</a></b>;</code></td>
</tr>
<tr class="list2">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>procedure <b><a  href="CastleRenderer.TGLRenderer.html#RenderShape">RenderShape</a></b>(Shape: <a  href="CastleRenderer.TX3DRendererShape.html">TX3DRendererShape</a>; Fog: <a  href="X3DNodes.IAbstractFogObject.html">IAbstractFogObject</a>);</code></td>
</tr>
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>procedure <b><a  href="CastleRenderer.TGLRenderer.html#UpdateGeneratedTextures">UpdateGeneratedTextures</a></b>(Shape: <a  href="CastleShapes.TShape.html">TShape</a>; TextureNode: <a  href="X3DNodes.TAbstractTextureNode.html">TAbstractTextureNode</a>; const Render: <a  href="Castle3D.html#TRenderFromViewFunction">TRenderFromViewFunction</a>; const ProjectionNear, ProjectionFar: Single; var NeedsRestoreViewport: boolean; CurrentViewpoint: <a  href="X3DNodes.TAbstractViewpointNode.html">TAbstractViewpointNode</a>; CameraViewKnown: boolean; const CameraPosition, CameraDirection, CameraUp: <a  href="CastleVectors.html#TVector3Single">TVector3Single</a>);</code></td>
</tr>
<tr class="list2">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>procedure <b><a  href="CastleRenderer.TGLRenderer.html#PrepareScreenEffect">PrepareScreenEffect</a></b>(Node: <a  href="X3DNodes.TScreenEffectNode.html">TScreenEffectNode</a>);</code></td>
</tr>
</table>
<a name="PasDoc-Properties"></a><h3 class="summary">Properties</h3>
<table class="summary wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>property <b><a  href="CastleRenderer.TGLRenderer.html#Attributes">Attributes</a></b>: <a  href="CastleRenderer.TRenderingAttributes.html">TRenderingAttributes</a> read FAttributes;</code></td>
</tr>
<tr class="list2">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>property <b><a  href="CastleRenderer.TGLRenderer.html#Cache">Cache</a></b>: <a  href="CastleRenderer.TGLRendererContextCache.html">TGLRendererContextCache</a> read FCache;</code></td>
</tr>
</table>
<h2 class="description">Description</h2>
<h3 class="detail">Fields</h3>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="PrepareRenderShape"></a><code><b>PrepareRenderShape</b>: Cardinal;</code></td>
</tr>
<tr><td colspan="2">
<p>
If &gt; 0, <a class="normal" href="CastleRenderer.TGLRenderer.html#RenderShape">RenderShape</a> will not actually render, only prepare per-shape resources for fast rendering (arrays and vbos).</p>
</td></tr>
</table>
<h3 class="detail">Methods</h3>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="Create"></a><code>constructor <b>Create</b>(AttributesClass: <a  href="CastleRenderer.html#TRenderingAttributesClass">TRenderingAttributesClass</a>; ACache: <a  href="CastleRenderer.TGLRendererContextCache.html">TGLRendererContextCache</a>);</code></td>
</tr>
<tr><td colspan="2">
<p>
Constructor. Always pass a cache instance &mdash; preferably, something created and used by many scenes.</p>
</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="Destroy"></a><code>destructor <b>Destroy</b>; override;</code></td>
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<tr><td colspan="2">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="Prepare"></a><code>procedure <b>Prepare</b>(Shape: <a  href="CastleRenderer.TX3DRendererShape.html">TX3DRendererShape</a>);</code></td>
</tr>
<tr><td colspan="2">
<p>
Prepare given Shape for rendering. Between preparing and unpreparing, nodes passed here are &quot;frozen&quot;: do not change, do not free them.</p>
</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="UnprepareTexture"></a><code>procedure <b>UnprepareTexture</b>(Node: <a  href="X3DNodes.TAbstractTextureNode.html">TAbstractTextureNode</a>);</code></td>
</tr>
<tr><td colspan="2">
<p>
Release resources for this texture.</p>
</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="UnprepareAll"></a><code>procedure <b>UnprepareAll</b>;</code></td>
</tr>
<tr><td colspan="2">
<p>
Release every OpenGL and VRML resource. That is release any knowledge connecting us to the current OpenGL context and any knowledge about your prepared VRML nodes, states etc.

<p>Calling <code>UnprepareAll</code> is valid (and ignored) call if everything is already released.

<p>Destructor callls <code>UnprepareAll</code> automatically. So be sure to either call <code>UnprepareAll</code> or destroy this renderer when your OpenGL context is still active.</p>
</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="RenderBegin"></a><code>procedure <b>RenderBegin</b>(ABaseLights: <a  href="X3DNodes.TLightInstancesList.html">TLightInstancesList</a>; LightRenderEvent: <a  href="CastleRenderer.html#TLightRenderEvent">TLightRenderEvent</a>; const APass: <a  href="Castle3D.html#TRenderingPass">TRenderingPass</a>);</code></td>
</tr>
<tr><td colspan="2">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="RenderEnd"></a><code>procedure <b>RenderEnd</b>;</code></td>
</tr>
<tr><td colspan="2">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="RenderShape"></a><code>procedure <b>RenderShape</b>(Shape: <a  href="CastleRenderer.TX3DRendererShape.html">TX3DRendererShape</a>; Fog: <a  href="X3DNodes.IAbstractFogObject.html">IAbstractFogObject</a>);</code></td>
</tr>
<tr><td colspan="2">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="UpdateGeneratedTextures"></a><code>procedure <b>UpdateGeneratedTextures</b>(Shape: <a  href="CastleShapes.TShape.html">TShape</a>; TextureNode: <a  href="X3DNodes.TAbstractTextureNode.html">TAbstractTextureNode</a>; const Render: <a  href="Castle3D.html#TRenderFromViewFunction">TRenderFromViewFunction</a>; const ProjectionNear, ProjectionFar: Single; var NeedsRestoreViewport: boolean; CurrentViewpoint: <a  href="X3DNodes.TAbstractViewpointNode.html">TAbstractViewpointNode</a>; CameraViewKnown: boolean; const CameraPosition, CameraDirection, CameraUp: <a  href="CastleVectors.html#TVector3Single">TVector3Single</a>);</code></td>
</tr>
<tr><td colspan="2">
<p>
Update generated texture for this shape.

<p>NeedsRestoreViewport will be set to <code>True</code> if viewport was (possibly) changed by this procedure (otherwise, NeedsRestoreViewport will not be modified).</p>
</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="PrepareScreenEffect"></a><code>procedure <b>PrepareScreenEffect</b>(Node: <a  href="X3DNodes.TScreenEffectNode.html">TScreenEffectNode</a>);</code></td>
</tr>
<tr><td colspan="2">
<p>
Load GLSL shader for the ScreenEffect node. Makes sure that Node.ShaderLoaded is true. When changing Node.ShaderLoaded false to true tries to initialize the shader, setting Node.Shader if some GLSL program was successfully loaded.

<p>The GLSL program (<a class="normal" href="CastleGLShaders.TGLSLProgram.html">TGLSLProgram</a>) will be stored here, and will be automatically freed during <a class="normal" href="CastleRenderer.TGLRenderer.html#UnprepareAll">UnprepareAll</a> call.</p>
</td></tr>
</table>
<h3 class="detail">Properties</h3>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="Attributes"></a><code>property <b>Attributes</b>: <a  href="CastleRenderer.TRenderingAttributes.html">TRenderingAttributes</a> read FAttributes;</code></td>
</tr>
<tr><td colspan="2">
<p>
Rendering attributes. You can change them only when renderer is not tied to the current OpenGL context, so only after construction or after <a class="normal" href="CastleRenderer.TGLRenderer.html#UnprepareAll">UnprepareAll</a> call (before any Prepare or Render* calls).</p>
</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="Cache"></a><code>property <b>Cache</b>: <a  href="CastleRenderer.TGLRendererContextCache.html">TGLRendererContextCache</a> read FCache;</code></td>
</tr>
<tr><td colspan="2">
&nbsp;</td></tr>
</table>
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