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		<title>Running OpenGL by myself on top of Allegro 5</title>
		<link>http://www.allegro.cc/forums/view/608929</link>
		<description>Allegro.cc Forum Thread</description>
		<webMaster>matthew@allegro.cc (Matthew Leverton)</webMaster>
		<lastBuildDate>Sun, 04 Dec 2011 10:29:30 +0000</lastBuildDate>
	</channel>
	<item>
		<description><![CDATA[<div class="mockup v2"><p>My other topic in the programming section changed focus and I made this instead. Hope that&#39;s alright. </p><p>I have no idea what I&#39;m doing, but I thought what the hey - let&#39;s try and import OpenGL along with A5 so I did this:</p><p>main.cpp
</p><div class="source-code"><div class="toolbar"><span class="button numbers"><b>#</b></span><span class="button select">Select</span><span class="button expand">Expand</span></div><div class="inner"><span class="number">   1</span><span class="p">#include &lt;stdio.h&gt;</span>
<span class="number">   2</span><span class="p">#include &lt;iostream&gt;</span>
<span class="number">   3</span><span class="p">#include &lt;windows.h&gt;</span>
<span class="number">   4</span><span class="p">#include &lt;gl/gl.h&gt;</span>
<span class="number">   5</span><span class="p">#include &lt;allegro5/allegro.h&gt;</span>
<span class="number">   6</span><span class="p">#include &lt;allegro5/allegro_image.h&gt;</span>
<span class="number">   7</span><span class="c">//#include &lt;allegro5/allegro_physfs.h&gt;</span>
<span class="number">   8</span><span class="p">#include &lt;allegro5/allegro_primitives.h&gt;</span>
<span class="number">   9</span><span class="p">#include &lt;allegro5/allegro_color.h&gt;</span>
<span class="number">  10</span><span class="p">#include &lt;allegro5/allegro_font.h&gt;</span>
<span class="number">  11</span><span class="p">#include &lt;allegro5/allegro_ttf.h&gt;</span>
<span class="number">  12</span><span class="p">#include &lt;allegro5/allegro_physfs.h&gt;</span>
<span class="number">  13</span><span class="p">#include &lt;allegro5/allegro_audio.h&gt;</span>
<span class="number">  14</span><span class="p">#include &lt;allegro5/allegro_acodec.h&gt;</span>
<span class="number">  15</span><span class="p">#include &lt;physfs.h&gt;</span>
<span class="number">  16</span>
<span class="number">  17</span><span class="p">#include "configure.h"</span>
<span class="number">  18</span><span class="p">#include "application.h"</span>
<span class="number">  19</span>
<span class="number">  20</span><span class="k1">struct</span> Assets <span class="k2">{</span>
<span class="number">  21</span>  <a href="http://www.allegro.cc/manual/ALLEGRO_DISPLAY"><span class="a">ALLEGRO_DISPLAY</span></a> <span class="k3">*</span>display<span class="k2">;</span>
<span class="number">  22</span>  <a href="http://www.allegro.cc/manual/ALLEGRO_EVENT_QUEUE"><span class="a">ALLEGRO_EVENT_QUEUE</span></a> <span class="k3">*</span>event_queue<span class="k2">;</span>
<span class="number">  23</span>  <a href="http://www.allegro.cc/manual/ALLEGRO_TIMER"><span class="a">ALLEGRO_TIMER</span></a> <span class="k3">*</span>timer<span class="k2">;</span>
<span class="number">  24</span>  Settings <span class="k3">*</span>config<span class="k2">;</span>
<span class="number">  25</span>  HDC hDC<span class="k2">;</span>
<span class="number">  26</span>    HGLRC hRC<span class="k2">;</span>
<span class="number">  27</span><span class="k2">}</span><span class="k2">;</span>
<span class="number">  28</span>
<span class="number">  29</span><span class="k1">bool</span> init<span class="k2">(</span> Assets<span class="k3">&amp;</span> v <span class="k2">)</span><span class="k2">;</span>
<span class="number">  30</span><span class="k1">bool</span> setup<span class="k2">(</span> Assets<span class="k3">&amp;</span> v <span class="k2">)</span><span class="k2">;</span>
<span class="number">  31</span><span class="k1">bool</span> run<span class="k2">(</span> Assets<span class="k3">&amp;</span> v <span class="k2">)</span><span class="k2">;</span>
<span class="number">  32</span><span class="k1">bool</span> deinit<span class="k2">(</span> Assets<span class="k3">&amp;</span> v <span class="k2">)</span><span class="k2">;</span>
<span class="number">  33</span>
<span class="number">  34</span><span class="k1">void</span> EnableOpenGL<span class="k2">(</span>HWND hwnd, HDC<span class="k3">*</span>, HGLRC<span class="k3">*</span><span class="k2">)</span><span class="k2">;</span>
<span class="number">  35</span><span class="k1">void</span> DisableOpenGL<span class="k2">(</span>HWND, HDC, HGLRC<span class="k2">)</span><span class="k2">;</span>
<span class="number">  36</span>
<span class="number">  37</span><span class="k1">int</span> main<span class="k2">(</span><span class="k1">int</span> argc, <span class="k1">char</span> <span class="k3">*</span><span class="k3">*</span>argv<span class="k2">)</span> <span class="k2">{</span>
<span class="number">  38</span>
<span class="number">  39</span>  Assets vars<span class="k2">;</span>
<span class="number">  40</span>    vars.display <span class="k3">=</span> <span class="n">0</span><span class="k2">;</span>
<span class="number">  41</span>    vars.event_queue <span class="k3">=</span> <span class="n">0</span><span class="k2">;</span>
<span class="number">  42</span>    vars.timer <span class="k3">=</span> <span class="n">0</span><span class="k2">;</span>
<span class="number">  43</span>    vars.config <span class="k3">=</span> <span class="n">0</span><span class="k2">;</span>
<span class="number">  44</span>
<span class="number">  45</span>  <span class="k1">if</span><span class="k2">(</span>init<span class="k2">(</span>vars<span class="k2">)</span><span class="k2">)</span> <span class="k2">{</span>
<span class="number">  46</span>
<span class="number">  47</span>    setup<span class="k2">(</span>vars<span class="k2">)</span><span class="k2">;</span>
<span class="number">  48</span>    run<span class="k2">(</span>vars<span class="k2">)</span><span class="k2">;</span>
<span class="number">  49</span>    deinit<span class="k2">(</span>vars<span class="k2">)</span><span class="k2">;</span>
<span class="number">  50</span>
<span class="number">  51</span>    <span class="k1">return</span> <span class="n">0</span><span class="k2">;</span>
<span class="number">  52</span>  <span class="k2">}</span>
<span class="number">  53</span>
<span class="number">  54</span>  <span class="k1">return</span> <span class="n">1</span><span class="k2">;</span>
<span class="number">  55</span>
<span class="number">  56</span><span class="k2">}</span>
<span class="number">  57</span>
<span class="number">  58</span>
<span class="number">  59</span><span class="k1">bool</span> init<span class="k2">(</span> Assets<span class="k3">&amp;</span> v <span class="k2">)</span> <span class="k2">{</span>
<span class="number">  60</span>
<span class="number">  61</span>  <span class="c">//ESSENTIALS</span>
<span class="number">  62</span>  <span class="k1">if</span><span class="k2">(</span><span class="k3">!</span><a href="http://www.allegro.cc/manual/al_init"><span class="a">al_init</span></a><span class="k2">(</span><span class="k2">)</span><span class="k2">)</span> <span class="k2">{</span>
<span class="number">  63</span>    <a href="http://www.delorie.com/djgpp/doc/libc/libc_345.html" target="_blank">fprintf</a><span class="k2">(</span>stderr, <span class="s">"failed to initialize allegro!\n"</span><span class="k2">)</span><span class="k2">;</span>
<span class="number">  64</span>  <span class="k2">}</span> <span class="k1">else</span> <span class="k1">if</span><span class="k2">(</span><span class="k3">!</span><a href="http://www.allegro.cc/manual/al_install_keyboard"><span class="a">al_install_keyboard</span></a><span class="k2">(</span><span class="k2">)</span><span class="k2">)</span> <span class="k2">{</span>
<span class="number">  65</span>    <a href="http://www.delorie.com/djgpp/doc/libc/libc_345.html" target="_blank">fprintf</a><span class="k2">(</span>stderr, <span class="s">"failed to initialize the keyboard!\n"</span><span class="k2">)</span><span class="k2">;</span>
<span class="number">  66</span>  <span class="k2">}</span> <span class="k1">else</span> <span class="k1">if</span><span class="k2">(</span><span class="k3">!</span><a href="http://www.allegro.cc/manual/al_install_joystick"><span class="a">al_install_joystick</span></a><span class="k2">(</span><span class="k2">)</span><span class="k2">)</span> <span class="k2">{</span>
<span class="number">  67</span>    <a href="http://www.delorie.com/djgpp/doc/libc/libc_345.html" target="_blank">fprintf</a><span class="k2">(</span>stderr, <span class="s">"failed to initialize the joystick!\n"</span><span class="k2">)</span><span class="k2">;</span>
<span class="number">  68</span>  <span class="k2">}</span> <span class="k1">else</span> <span class="k1">if</span><span class="k2">(</span><span class="k3">!</span><a href="http://www.allegro.cc/manual/al_install_mouse"><span class="a">al_install_mouse</span></a><span class="k2">(</span><span class="k2">)</span><span class="k2">)</span> <span class="k2">{</span>
<span class="number">  69</span>    <a href="http://www.delorie.com/djgpp/doc/libc/libc_345.html" target="_blank">fprintf</a><span class="k2">(</span>stderr, <span class="s">"failed to initialize the mouse!\n"</span><span class="k2">)</span><span class="k2">;</span>
<span class="number">  70</span>  <span class="k2">}</span> <span class="k1">else</span> <span class="k1">if</span><span class="k2">(</span><span class="k3">!</span><a href="http://www.allegro.cc/manual/al_install_audio"><span class="a">al_install_audio</span></a><span class="k2">(</span><span class="k2">)</span><span class="k2">)</span> <span class="k2">{</span>
<span class="number">  71</span>    <a href="http://www.delorie.com/djgpp/doc/libc/libc_345.html" target="_blank">fprintf</a><span class="k2">(</span>stderr, <span class="s">"failed to initialize audio!\n"</span><span class="k2">)</span><span class="k2">;</span>
<span class="number">  72</span>  <span class="k2">}</span> <span class="k1">else</span> <span class="k2">{</span>
<span class="number">  73</span>
<span class="number">  74</span>    <span class="c">//ASSETS</span>
<span class="number">  75</span>    <span class="c">//al_set_new_display_flags(ALLEGRO_FULLSCREEN); //tryme</span>
<span class="number">  76</span>    <span class="c">//al_set_new_display_flags(ALLEGRO_RESIZABLE); //tryme</span>
<span class="number">  77</span>    <a href="http://www.allegro.cc/manual/al_set_new_display_option"><span class="a">al_set_new_display_option</span></a><span class="k2">(</span>ALLEGRO_SAMPLE_BUFFERS, <span class="n">1</span>, ALLEGRO_SUGGEST<span class="k2">)</span><span class="k2">;</span>
<span class="number">  78</span>    <a href="http://www.allegro.cc/manual/al_set_new_display_option"><span class="a">al_set_new_display_option</span></a><span class="k2">(</span>ALLEGRO_SAMPLES, <span class="n">4</span>, ALLEGRO_SUGGEST<span class="k2">)</span><span class="k2">;</span>
<span class="number">  79</span>
<span class="number">  80</span>    v.config <span class="k3">=</span> <span class="k1">new</span> Settings<span class="k2">(</span><span class="k2">)</span><span class="k2">;</span>
<span class="number">  81</span>    <span class="k1">if</span><span class="k2">(</span>v.config-&gt;get_fullscreen<span class="k2">(</span><span class="k2">)</span><span class="k2">)</span> <a href="http://www.allegro.cc/manual/al_set_new_display_flags"><span class="a">al_set_new_display_flags</span></a><span class="k2">(</span>ALLEGRO_FULLSCREEN_WINDOW<span class="k2">)</span><span class="k2">;</span>
<span class="number">  82</span>
<span class="number">  83</span>    v.display <span class="k3">=</span> <a href="http://www.allegro.cc/manual/al_create_display"><span class="a">al_create_display</span></a><span class="k2">(</span>v.config <span class="k3">-</span><span class="k3">&gt;</span> get_screen_w<span class="k2">(</span><span class="k2">)</span>, v.config <span class="k3">-</span><span class="k3">&gt;</span> get_screen_h<span class="k2">(</span><span class="k2">)</span><span class="k2">)</span><span class="k2">;</span>
<span class="number">  84</span>    v.timer <span class="k3">=</span> <a href="http://www.allegro.cc/manual/al_create_timer"><span class="a">al_create_timer</span></a><span class="k2">(</span><span class="n">1</span>.<span class="n">0</span> <span class="k3">/</span> v.config <span class="k3">-</span><span class="k3">&gt;</span> FPS<span class="k2">)</span><span class="k2">;</span>
<span class="number">  85</span>    v.event_queue <span class="k3">=</span> <a href="http://www.allegro.cc/manual/al_create_event_queue"><span class="a">al_create_event_queue</span></a><span class="k2">(</span><span class="k2">)</span><span class="k2">;</span>
<span class="number">  86</span>    <span class="k1">if</span><span class="k2">(</span><span class="k3">!</span>v.display<span class="k2">)</span> <span class="k2">{</span>
<span class="number">  87</span>      <a href="http://www.delorie.com/djgpp/doc/libc/libc_345.html" target="_blank">fprintf</a><span class="k2">(</span>stderr, <span class="s">"failed to create display!\n"</span><span class="k2">)</span><span class="k2">;</span>
<span class="number">  88</span>    <span class="k2">}</span> <span class="k1">else</span> <span class="k1">if</span><span class="k2">(</span><span class="k3">!</span>v.timer<span class="k2">)</span> <span class="k2">{</span>
<span class="number">  89</span>      <a href="http://www.delorie.com/djgpp/doc/libc/libc_345.html" target="_blank">fprintf</a><span class="k2">(</span>stderr, <span class="s">"failed to create timer!\n"</span><span class="k2">)</span><span class="k2">;</span>
<span class="number">  90</span>    <span class="k2">}</span> <span class="k1">else</span> <span class="k1">if</span><span class="k2">(</span><span class="k3">!</span>v.event_queue<span class="k2">)</span> <span class="k2">{</span>
<span class="number">  91</span>      <a href="http://www.delorie.com/djgpp/doc/libc/libc_345.html" target="_blank">fprintf</a><span class="k2">(</span>stderr, <span class="s">"failed to create event_queue!\n"</span><span class="k2">)</span><span class="k2">;</span>
<span class="number">  92</span>    <span class="k2">}</span> <span class="k1">else</span> <span class="k2">{</span>
<span class="number">  93</span>
<span class="number">  94</span>      <a href="http://www.allegro.cc/manual/al_init_font_addon"><span class="a">al_init_font_addon</span></a><span class="k2">(</span><span class="k2">)</span><span class="k2">;</span>
<span class="number">  95</span>
<span class="number">  96</span>      <span class="c">//ADDONS</span>
<span class="number">  97</span>      <span class="k1">if</span><span class="k2">(</span><span class="k3">!</span><a href="http://www.allegro.cc/manual/al_init_image_addon"><span class="a">al_init_image_addon</span></a><span class="k2">(</span><span class="k2">)</span><span class="k2">)</span> <span class="k2">{</span>
<span class="number">  98</span>        <a href="http://www.delorie.com/djgpp/doc/libc/libc_345.html" target="_blank">fprintf</a><span class="k2">(</span>stderr, <span class="s">"failed to initialize image addon!\n"</span><span class="k2">)</span><span class="k2">;</span>
<span class="number">  99</span>      <span class="k2">}</span> <span class="k1">else</span> <span class="k1">if</span><span class="k2">(</span><span class="k3">!</span><a href="http://www.allegro.cc/manual/al_init_primitives_addon"><span class="a">al_init_primitives_addon</span></a><span class="k2">(</span><span class="k2">)</span><span class="k2">)</span> <span class="k2">{</span>
<span class="number"> 100</span>        <a href="http://www.delorie.com/djgpp/doc/libc/libc_345.html" target="_blank">fprintf</a><span class="k2">(</span>stderr, <span class="s">"failed to initialize primitive addon!\n"</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 101</span>      <span class="k2">}</span> <span class="k1">else</span> <span class="k1">if</span><span class="k2">(</span><span class="k3">!</span><a href="http://www.allegro.cc/manual/al_init_ttf_addon"><span class="a">al_init_ttf_addon</span></a><span class="k2">(</span><span class="k2">)</span><span class="k2">)</span> <span class="k2">{</span>
<span class="number"> 102</span>        <a href="http://www.delorie.com/djgpp/doc/libc/libc_345.html" target="_blank">fprintf</a><span class="k2">(</span>stderr, <span class="s">"failed to initialize ttf font addon!\n"</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 103</span>      <span class="k2">}</span> <span class="k1">else</span> <span class="k2">{</span>
<span class="number"> 104</span>
<span class="number"> 105</span>        <span class="c">//SUCCESS</span>
<span class="number"> 106</span>        <a href="http://www.allegro.cc/manual/al_set_window_title"><span class="a">al_set_window_title</span></a><span class="k2">(</span>v.display, <span class="s">"SpectreNectar's WIP Game Title"</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 107</span>        <a href="http://www.allegro.cc/manual/al_set_target_bitmap"><span class="a">al_set_target_bitmap</span></a><span class="k2">(</span><a href="http://www.allegro.cc/manual/al_get_backbuffer"><span class="a">al_get_backbuffer</span></a><span class="k2">(</span>v.display<span class="k2">)</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 108</span>
<span class="number"> 109</span>        <span class="k1">return</span> <span class="k1">true</span><span class="k2">;</span>
<span class="number"> 110</span>
<span class="number"> 111</span>      <span class="k2">}</span>
<span class="number"> 112</span>    <span class="k2">}</span>
<span class="number"> 113</span>
<span class="number"> 114</span>    deinit<span class="k2">(</span>v<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 115</span>
<span class="number"> 116</span>  <span class="k2">}</span>
<span class="number"> 117</span>
<span class="number"> 118</span>  <span class="k1">return</span> <span class="k1">false</span><span class="k2">;</span>
<span class="number"> 119</span>
<span class="number"> 120</span><span class="k2">}</span>
<span class="number"> 121</span>
<span class="number"> 122</span><span class="k1">bool</span> setup<span class="k2">(</span> Assets<span class="k3">&amp;</span> v <span class="k2">)</span> <span class="k2">{</span>
<span class="number"> 123</span>
<span class="number"> 124</span>    <a href="http://www.allegro.cc/manual/al_set_physfs_file_interface"><span class="a">al_set_physfs_file_interface</span></a><span class="k2">(</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 125</span>
<span class="number"> 126</span>    <span class="c">/* Set up PhysicsFS. */</span>
<span class="number"> 127</span>    <span class="k1">if</span><span class="k2">(</span><span class="k3">!</span>PHYSFS_init<span class="k2">(</span><span class="n">0</span><span class="k2">)</span><span class="k2">)</span> std::cout <span class="k3">&lt;</span><span class="k3">&lt;</span> <span class="s">"failed initializing"</span> <span class="k3">&lt;</span><span class="k3">&lt;</span> std::endl<span class="k2">;</span>
<span class="number"> 128</span>    <span class="c">// This creates a ~/.allegro directory, which is very annoying to say the</span>
<span class="number"> 129</span>    <span class="c">// least - and no need for it in this example.</span>
<span class="number"> 130</span>    <span class="c">//  if (!PHYSFS_setSaneConfig("allegro", "ex_physfs", NULL, 0, 0))</span>
<span class="number"> 131</span>    <span class="c">//     return 1;</span>
<span class="number"> 132</span>    <span class="k1">else</span> <span class="k1">if</span><span class="k2">(</span><span class="k3">!</span>PHYSFS_addToSearchPath<span class="k2">(</span><span class="s">"data"</span>, <span class="n">1</span><span class="k2">)</span><span class="k2">)</span> std::cout <span class="k3">&lt;</span><span class="k3">&lt;</span> <span class="s">"failed adding search path"</span> <span class="k3">&lt;</span><span class="k3">&lt;</span> std::endl<span class="k2">;</span>
<span class="number"> 133</span>
<span class="number"> 134</span>  <a href="http://www.allegro.cc/manual/al_register_event_source"><span class="a">al_register_event_source</span></a><span class="k2">(</span>v.event_queue, <a href="http://www.allegro.cc/manual/al_get_display_event_source"><span class="a">al_get_display_event_source</span></a><span class="k2">(</span>v.display<span class="k2">)</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 135</span>  <a href="http://www.allegro.cc/manual/al_register_event_source"><span class="a">al_register_event_source</span></a><span class="k2">(</span>v.event_queue, <a href="http://www.allegro.cc/manual/al_get_timer_event_source"><span class="a">al_get_timer_event_source</span></a><span class="k2">(</span>v.timer<span class="k2">)</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 136</span>  <a href="http://www.allegro.cc/manual/al_register_event_source"><span class="a">al_register_event_source</span></a><span class="k2">(</span>v.event_queue, <a href="http://www.allegro.cc/manual/al_get_mouse_event_source"><span class="a">al_get_mouse_event_source</span></a><span class="k2">(</span><span class="k2">)</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 137</span>  <a href="http://www.allegro.cc/manual/al_register_event_source"><span class="a">al_register_event_source</span></a><span class="k2">(</span>v.event_queue, <a href="http://www.allegro.cc/manual/al_get_keyboard_event_source"><span class="a">al_get_keyboard_event_source</span></a><span class="k2">(</span><span class="k2">)</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 138</span>  <a href="http://www.allegro.cc/manual/al_register_event_source"><span class="a">al_register_event_source</span></a><span class="k2">(</span>v.event_queue, <a href="http://www.allegro.cc/manual/al_get_joystick_event_source"><span class="a">al_get_joystick_event_source</span></a><span class="k2">(</span><span class="k2">)</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 139</span>
<span class="number"> 140</span>    <span class="c">// Audio</span>
<span class="number"> 141</span>    <a href="http://www.allegro.cc/manual/al_reserve_samples"><span class="a">al_reserve_samples</span></a><span class="k2">(</span><span class="n">16</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 142</span>    <a href="http://www.allegro.cc/manual/al_init_acodec_addon"><span class="a">al_init_acodec_addon</span></a><span class="k2">(</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 143</span>
<span class="number"> 144</span>    <span class="c">//al_set_new_bitmap_flags(ALLEGRO_MIN_LINEAR | ALLEGRO_MAG_LINEAR); // Make full screen blurry</span>
<span class="number"> 145</span>
<span class="number"> 146</span>  <a href="http://www.allegro.cc/manual/al_set_blender"><span class="a">al_set_blender</span></a><span class="k2">(</span>ALLEGRO_ADD, ALLEGRO_ALPHA, ALLEGRO_INVERSE_ALPHA<span class="k2">)</span><span class="k2">;</span> <span class="c">// Enable alpha for lines</span>
<span class="number"> 147</span>  <a href="http://www.allegro.cc/manual/al_clear_to_color"><span class="a">al_clear_to_color</span></a><span class="k2">(</span><a href="http://www.allegro.cc/manual/al_map_rgb"><span class="a">al_map_rgb</span></a><span class="k2">(</span><span class="n">0</span>,<span class="n">0</span>,<span class="n">0</span><span class="k2">)</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 148</span>  <a href="http://www.allegro.cc/manual/al_flip_display"><span class="a">al_flip_display</span></a><span class="k2">(</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 149</span>  <a href="http://www.allegro.cc/manual/al_start_timer"><span class="a">al_start_timer</span></a><span class="k2">(</span>v.timer<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 150</span>
<span class="number"> 151</span>    <span class="c">// Disable screensaver</span>
<span class="number"> 152</span>    <span class="c">//al_inhibit_screensaver(true); //Full screen only</span>
<span class="number"> 153</span>    <span class="c">//al_set_display_icon(v.display, bmp);</span>
<span class="number"> 154</span>    <span class="c">//al_toggle_display_flag(v.display, ALLEGRO_FULLSCREEN_WINDOW, true);</span>
<span class="number"> 155</span>
<span class="number"> 156</span>  <span class="k1">return</span> <span class="k1">true</span><span class="k2">;</span>
<span class="number"> 157</span><span class="k2">}</span>
<span class="number"> 158</span>
<span class="number"> 159</span><span class="k1">bool</span> run<span class="k2">(</span> Assets<span class="k3">&amp;</span> v <span class="k2">)</span> <span class="k2">{</span>
<span class="number"> 160</span>
<span class="number"> 161</span>    EnableOpenGL<span class="k2">(</span><a href="http://www.allegro.cc/manual/al_get_win_window_handle"><span class="a">al_get_win_window_handle</span></a><span class="k2">(</span>v.display<span class="k2">)</span>, <span class="k3">&amp;</span>v.hDC, <span class="k3">&amp;</span>v.hRC<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 162</span>
<span class="number"> 163</span>    <span class="k1">float</span> theta <span class="k3">=</span> <span class="n">0</span>.<span class="n">0f</span><span class="k2">;</span>
<span class="number"> 164</span>
<span class="number"> 165</span>  Application app<span class="k2">(</span>v.display, v.config<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 166</span>  <span class="k1">while</span><span class="k2">(</span><span class="k3">!</span>app.doexit<span class="k2">)</span> <span class="k2">{</span>
<span class="number"> 167</span>    <a href="http://www.allegro.cc/manual/ALLEGRO_EVENT"><span class="a">ALLEGRO_EVENT</span></a> ev<span class="k2">;</span>
<span class="number"> 168</span>    <a href="http://www.allegro.cc/manual/al_wait_for_event"><span class="a">al_wait_for_event</span></a><span class="k2">(</span>v.event_queue, <span class="k3">&amp;</span>ev<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 169</span>
<span class="number"> 170</span>    app.update<span class="k2">(</span><span class="k3">&amp;</span>ev<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 171</span>
<span class="number"> 172</span>    <span class="k1">if</span><span class="k2">(</span>app.redraw <span class="k3">&amp;</span><span class="k3">&amp;</span> <a href="http://www.allegro.cc/manual/al_is_event_queue_empty"><span class="a">al_is_event_queue_empty</span></a><span class="k2">(</span>v.event_queue<span class="k2">)</span><span class="k2">)</span> <span class="k2">{</span>
<span class="number"> 173</span>
<span class="number"> 174</span>            <span class="c">/* OpenGL animation code goes here */</span>
<span class="number"> 175</span>
<span class="number"> 176</span>            glClearColor<span class="k2">(</span><span class="n">0</span>.<span class="n">0f</span>, <span class="n">0</span>.<span class="n">0f</span>, <span class="n">0</span>.<span class="n">0f</span>, <span class="n">0</span>.<span class="n">0f</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 177</span>            glClear<span class="k2">(</span>GL_COLOR_BUFFER_BIT<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 178</span>
<span class="number"> 179</span>            glPushMatrix<span class="k2">(</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 180</span>            glRotatef<span class="k2">(</span>theta, <span class="n">0</span>.<span class="n">0f</span>, <span class="n">0</span>.<span class="n">0f</span>, <span class="n">1</span>.<span class="n">0f</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 181</span>
<span class="number"> 182</span>            glBegin<span class="k2">(</span>GL_TRIANGLES<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 183</span>
<span class="number"> 184</span>                glColor3f<span class="k2">(</span><span class="n">0</span>.<span class="n">0f</span>, <span class="n">0</span>.<span class="n">0f</span>, <span class="n">1</span>.<span class="n">0f</span><span class="k2">)</span><span class="k2">;</span>   glVertex2f<span class="k2">(</span><span class="n">0</span>.<span class="n">0f</span>,   <span class="n">1</span>.<span class="n">0f</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 185</span>                glColor3f<span class="k2">(</span><span class="n">0</span>.<span class="n">0f</span>, <span class="n">1</span>.<span class="n">0f</span>, <span class="n">0</span>.<span class="n">0f</span><span class="k2">)</span><span class="k2">;</span>   glVertex2f<span class="k2">(</span><span class="n">0</span>.<span class="n">87f</span>,  <span class="k3">-</span><span class="n">0</span>.<span class="n">5f</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 186</span>                glColor3f<span class="k2">(</span><span class="n">1</span>.<span class="n">0f</span>, <span class="n">0</span>.<span class="n">0f</span>, <span class="n">0</span>.<span class="n">0f</span><span class="k2">)</span><span class="k2">;</span>   glVertex2f<span class="k2">(</span><span class="k3">-</span><span class="n">0</span>.<span class="n">87f</span>, <span class="k3">-</span><span class="n">0</span>.<span class="n">5f</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 187</span>
<span class="number"> 188</span>            glEnd<span class="k2">(</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 189</span>
<span class="number"> 190</span>            glPopMatrix<span class="k2">(</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 191</span>
<span class="number"> 192</span>            SwapBuffers<span class="k2">(</span>hDC<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 193</span>
<span class="number"> 194</span>            theta <span class="k3">+</span><span class="k3">=</span> <span class="n">1</span>.<span class="n">0f</span><span class="k2">;</span>
<span class="number"> 195</span>
<span class="number"> 196</span>      app.draw<span class="k2">(</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 197</span>      <a href="http://www.allegro.cc/manual/al_flip_display"><span class="a">al_flip_display</span></a><span class="k2">(</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 198</span>    <span class="k2">}</span>
<span class="number"> 199</span>  <span class="k2">}</span>
<span class="number"> 200</span>
<span class="number"> 201</span>    DisableOpenGL<span class="k2">(</span><a href="http://www.allegro.cc/manual/al_get_win_window_handle"><span class="a">al_get_win_window_handle</span></a><span class="k2">(</span>v.display<span class="k2">)</span>, v.hDC, v.hRC<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 202</span>
<span class="number"> 203</span>  <span class="k1">return</span> <span class="k1">true</span><span class="k2">;</span>
<span class="number"> 204</span><span class="k2">}</span>
<span class="number"> 205</span>
<span class="number"> 206</span><span class="k1">bool</span> deinit<span class="k2">(</span> Assets<span class="k3">&amp;</span> v <span class="k2">)</span> <span class="k2">{</span>
<span class="number"> 207</span>
<span class="number"> 208</span>
<span class="number"> 209</span>
<span class="number"> 210</span>    PHYSFS_deinit<span class="k2">(</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 211</span>
<span class="number"> 212</span>    <span class="k1">delete</span> v.config<span class="k2">;</span>
<span class="number"> 213</span>  <a href="http://www.allegro.cc/manual/al_uninstall_audio"><span class="a">al_uninstall_audio</span></a><span class="k2">(</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 214</span>  <a href="http://www.allegro.cc/manual/al_destroy_timer"><span class="a">al_destroy_timer</span></a><span class="k2">(</span>v.timer<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 215</span>  <a href="http://www.allegro.cc/manual/al_destroy_event_queue"><span class="a">al_destroy_event_queue</span></a><span class="k2">(</span>v.event_queue<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 216</span>  <a href="http://www.allegro.cc/manual/al_destroy_display"><span class="a">al_destroy_display</span></a><span class="k2">(</span>v.display<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 217</span>
<span class="number"> 218</span>  <span class="k1">return</span> <span class="k1">true</span><span class="k2">;</span>
<span class="number"> 219</span>
<span class="number"> 220</span><span class="k2">}</span>
<span class="number"> 221</span>
<span class="number"> 222</span>
<span class="number"> 223</span>
<span class="number"> 224</span><span class="k1">void</span> EnableOpenGL<span class="k2">(</span>HWND hwnd, HDC<span class="k3">*</span> hDC, HGLRC<span class="k3">*</span> hRC<span class="k2">)</span>
<span class="number"> 225</span><span class="k2">{</span>
<span class="number"> 226</span>    PIXELFORMATDESCRIPTOR pfd<span class="k2">;</span>
<span class="number"> 227</span>
<span class="number"> 228</span>    <span class="k1">int</span> iFormat<span class="k2">;</span>
<span class="number"> 229</span>
<span class="number"> 230</span>    <span class="c">/* get the device context (DC) */</span>
<span class="number"> 231</span>    <span class="k3">*</span>hDC <span class="k3">=</span> GetDC<span class="k2">(</span>hwnd<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 232</span>
<span class="number"> 233</span>    <span class="c">/* set the pixel format for the DC */</span>
<span class="number"> 234</span>    ZeroMemory<span class="k2">(</span><span class="k3">&amp;</span>pfd, <span class="k1">sizeof</span><span class="k2">(</span>pfd<span class="k2">)</span><span class="k2">)</span><span class="k2">;</span>
<span class="number"> 235</span>
<span class="number"> 236</span>    pfd.nSize <span class="k3">=</span> <span class="k1">sizeof</span><span class="k2">(</span>pfd<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 237</span>    pfd.nVersion <span class="k3">=</span> <span class="n">1</span><span class="k2">;</span>
<span class="number"> 238</span>    pfd.dwFlags <span class="k3">=</span> PFD_DRAW_TO_WINDOW <span class="k3">|</span>
<span class="number"> 239</span>                  PFD_SUPPORT_OPENGL <span class="k3">|</span> PFD_DOUBLEBUFFER<span class="k2">;</span>
<span class="number"> 240</span>    pfd.iPixelType <span class="k3">=</span> PFD_TYPE_RGBA<span class="k2">;</span>
<span class="number"> 241</span>    pfd.cColorBits <span class="k3">=</span> <span class="n">24</span><span class="k2">;</span>
<span class="number"> 242</span>    pfd.cDepthBits <span class="k3">=</span> <span class="n">16</span><span class="k2">;</span>
<span class="number"> 243</span>    pfd.iLayerType <span class="k3">=</span> PFD_MAIN_PLANE<span class="k2">;</span>
<span class="number"> 244</span>
<span class="number"> 245</span>    iFormat <span class="k3">=</span> ChoosePixelFormat<span class="k2">(</span><span class="k3">*</span>hDC, <span class="k3">&amp;</span>pfd<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 246</span>
<span class="number"> 247</span>    SetPixelFormat<span class="k2">(</span><span class="k3">*</span>hDC, iFormat, <span class="k3">&amp;</span>pfd<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 248</span>
<span class="number"> 249</span>    <span class="c">/* create and enable the render context (RC) */</span>
<span class="number"> 250</span>    <span class="k3">*</span>hRC <span class="k3">=</span> wglCreateContext<span class="k2">(</span><span class="k3">*</span>hDC<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 251</span>
<span class="number"> 252</span>    wglMakeCurrent<span class="k2">(</span><span class="k3">*</span>hDC, <span class="k3">*</span>hRC<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 253</span><span class="k2">}</span>
<span class="number"> 254</span>
<span class="number"> 255</span><span class="k1">void</span> DisableOpenGL <span class="k2">(</span>HWND hwnd, HDC hDC, HGLRC hRC<span class="k2">)</span>
<span class="number"> 256</span><span class="k2">{</span>
<span class="number"> 257</span>    wglMakeCurrent<span class="k2">(</span>NULL, NULL<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 258</span>    wglDeleteContext<span class="k2">(</span>hRC<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 259</span>    ReleaseDC<span class="k2">(</span>hwnd, hDC<span class="k2">)</span><span class="k2">;</span>
<span class="number"> 260</span><span class="k2">}</span>
</div></div><p>

And got this:</p><p>In function &#39;bool run(Assets&amp;)&#39;:|<br />error: &#39;al_get_win_window_handle&#39; was not declared in this scope|<br />error: &#39;hDC&#39; was not declared in this scope|<br />|=== Build finished: 2 errors, 0 warnings ===|</p><p>It would seem that the al_get_win_window_handle function is no longer supported.</p><p>I&#39;m attempting to use OpenGL directly for my drawing in case you wondered.<br />If this isn&#39;t the right way to do it then what is?
</p></div>]]>
		</description>
		<author>no-reply@allegro.cc (SpectreNectar)</author>
		<pubDate>Wed, 30 Nov 2011 00:57:02 +0000</pubDate>
	</item>
	<item>
		<description><![CDATA[<div class="mockup v2"><p>You need:</p><p><span class="source-code"><span class="p">#include &lt;allegro5/allegro_windows.h&gt;</span></span></p><p>Also see:</p><p><a href="http://www.allegro.cc/manual/5/opengl.html">http://www.allegro.cc/manual/5/opengl.html</a></p><p>along with the OpenGL examples.
</p></div>]]>
		</description>
		<author>no-reply@allegro.cc (Matthew Leverton)</author>
		<pubDate>Wed, 30 Nov 2011 01:03:59 +0000</pubDate>
	</item>
	<item>
		<description><![CDATA[<div class="mockup v2"><p>This is great! The manual never ceases to amaze me ^^
</p></div>]]>
		</description>
		<author>no-reply@allegro.cc (SpectreNectar)</author>
		<pubDate>Wed, 30 Nov 2011 01:23:50 +0000</pubDate>
	</item>
	<item>
		<description><![CDATA[<div class="mockup v2"><p><span class="source-code"><span class="p">#include &lt;GL/glew.h&gt;</span></span>
</p></div>]]>
		</description>
		<author>no-reply@allegro.cc (flowbsd)</author>
		<pubDate>Sun, 04 Dec 2011 10:29:30 +0000</pubDate>
	</item>
</rss>
