📄 hgefunc_gfxbeginscene.html

📁 2D游戏引擎hge的代码

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<h1 style="margin-top:0px">HGE::Gfx_BeginScene</h1>
<p>
Starts rendering graphics.
</p>
<pre>
bool Gfx_BeginScene(
  HTARGET <i><b>target</b></i> = 0
);
</pre>
<h2>Parameters</h2>
<dl>
<dt><i>target</i>
<dd>Optional render target handle to use for rendering.
If 0 or omitted - the screen surface is used.
</dl>
<h2>Return value</h2>
<p>
If successful, returns <b>true</b>. Otherwise returns <b>false</b>.
</p>
<h2>Remarks</h2>
<p>
<b>Gfx_BeginScene</b> function must be called before any call to
<a href="hgefunc_gfxrenderquad.html">Gfx_RenderQuad</a> or helper classes' render methods.
<br><br>
If the function fails, you may obtain error message with <a href="hgefunc_systemgeterror.html">System_GetErrorMessage</a>
function. Also if <a href="hgeconst_systemstate.html#HGE_LOGFILE">HGE_LOGFILE</a> system state was set, the
error message is written to log.
<br><br>
To finish rendering you must call <a href="hgefunc_gfxendscene.html">Gfx_EndScene</a>.
</p>
<h2>Requirements</h2>
<p>
<b>Header:</b> hge.h<br>
<b>Import library:</b> hge.lib
</p>
<h2>See also</h2>
<p>
<a href="hgefunc_gfxendscene.html">Gfx_EndScene</a>,
<a href="hgefunc_targetcreate.html">Target_Create</a>
</p>
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