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		<title>Allegro and OpenGL fullscreen problem</title>
		<link>http://www.allegro.cc/forums/view/612473</link>
		<description>Allegro.cc Forum Thread</description>
		<webMaster>matthew@allegro.cc (Matthew Leverton)</webMaster>
		<lastBuildDate>Wed, 24 Apr 2013 02:25:43 +0000</lastBuildDate>
	</channel>
	<item>
		<description><![CDATA[<div class="mockup v2"><p>Hi!</p><p>While i&#39;m trying to set window in fullscreen mode, it flush me blank screen. I have no idea what it could be.</p><p>My main.c function:
</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="number">   2</span><span class="p">#include &lt;stdio.h&gt;</span>
<span class="number">   3</span><span class="p">#include &lt;math.h&gt;</span>
<span class="number">   4</span><span class="p">#include &lt;allegro5/allegro.h&gt;</span>
<span class="number">   5</span><span class="p">#include &lt;allegro5/allegro_opengl.h&gt;</span>
<span class="number">   6</span><span class="p">#include &lt;GL/glu.h&gt;</span>
<span class="number">   7</span><span class="p">#include "constants.h"</span>
<span class="number">   8</span><span class="p">#include "terrain.h"</span>
<span class="number">   9</span><span class="p">#include "camera.h"</span>
<span class="number">  10</span>
<span class="number">  11</span>
<span class="number">  12</span><span class="c">/// MAIN ///////////////////////////////////////////////////////////////////////////</span>
<span class="number">  13</span>
<span class="number">  14</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="number">  15</span><span class="k2">{</span>
<span class="number">  16</span>    <span class="c">// Zmienne allegro</span>
<span class="number">  17</span>    <a href="http://www.allegro.cc/manual/ALLEGRO_DISPLAY"><span class="a">ALLEGRO_DISPLAY</span></a> <span class="k3">*</span>display <span class="k3">=</span> NULL<span class="k2">;</span>
<span class="number">  18</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="k3">=</span> NULL<span class="k2">;</span>
<span class="number">  19</span>    <a href="http://www.allegro.cc/manual/ALLEGRO_TIMER"><span class="a">ALLEGRO_TIMER</span></a> <span class="k3">*</span>timer <span class="k3">=</span> NULL<span class="k2">;</span>
<span class="number">  20</span>
<span class="number">  21</span>    <span class="c">// Główne zmienne</span>
<span class="number">  22</span>    T_TERRAIN <span class="k3">*</span>terrain <span class="k3">=</span> NULL<span class="k2">;</span>
<span class="number">  23</span>    T_CAMERA <span class="k3">*</span>camera <span class="k3">=</span> NULL<span class="k2">;</span>
<span class="number">  24</span>
<span class="number">  25</span>    <span class="c">// Pozostałe zmienne</span>
<span class="number">  26</span>    <span class="k1">bool</span> runapp <span class="k3">=</span> <span class="k1">true</span><span class="k2">;</span>
<span class="number">  27</span>    <span class="k1">bool</span> redraw <span class="k3">=</span> <span class="k1">true</span><span class="k2">;</span>
<span class="number">  28</span>
<span class="number">  29</span>    <span class="c">// Inicjalizacja</span>
<span class="number">  30</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="number">  31</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="number">  32</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="number">  33</span>
<span class="number">  34</span>    <span class="c">// Okienko aplikacji</span>
<span class="number">  35</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_OPENGL <span class="k2">)</span><span class="k2">;</span>
<span class="number">  36</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 <span class="k2">)</span><span class="k2">;</span>
<span class="number">  37</span>    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> <span class="n">800</span>, <span class="n">600</span> <span class="k2">)</span><span class="k2">;</span>
<span class="number">  38</span>    <a href="http://www.allegro.cc/manual/al_set_current_opengl_context"><span class="a">al_set_current_opengl_context</span></a><span class="k2">(</span> display <span class="k2">)</span><span class="k2">;</span>
<span class="number">  39</span>
<span class="number">  40</span>    <span class="c">// Uzupełnianie głównych zmiennych</span>
<span class="number">  41</span>    terrain <span class="k3">=</span> t_terrain_create<span class="k2">(</span> <span class="s">"map.tga"</span> <span class="k2">)</span><span class="k2">;</span>
<span class="number">  42</span>    t_terrain_scale<span class="k2">(</span> terrain, <span class="n">3</span>.<span class="n">0</span>, <span class="n">1</span>.<span class="n">0</span>, <span class="n">1</span>.<span class="n">0</span> <span class="k2">)</span><span class="k2">;</span>
<span class="number">  43</span>    t_terrain_render<span class="k2">(</span> terrain, <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="number">  44</span>    camera <span class="k3">=</span> t_camera_create<span class="k2">(</span> <span class="n">0</span>, <span class="n">20</span>, <span class="k3">-</span><span class="n">1</span>, <span class="n">0</span>, <span class="n">0</span>, <span class="n">800</span>, <span class="n">600</span> <span class="k2">)</span><span class="k2">;</span>
<span class="number">  45</span>
<span class="number">  46</span>    <span class="c">// Ustawienia OpenGL</span>
<span class="number">  47</span>    glEnable<span class="k2">(</span>GL_DEPTH_TEST<span class="k2">)</span><span class="k2">;</span>
<span class="number">  48</span>    glShadeModel<span class="k2">(</span>GL_SMOOTH<span class="k2">)</span><span class="k2">;</span>
<span class="number">  49</span>    glHint<span class="k2">(</span>GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST<span class="k2">)</span><span class="k2">;</span>
<span class="number">  50</span>    glPolygonMode<span class="k2">(</span>GL_FRONT_AND_BACK, GL_LINE<span class="k2">)</span><span class="k2">;</span>
<span class="number">  51</span>    glDisable<span class="k2">(</span>GL_CULL_FACE<span class="k2">)</span><span class="k2">;</span>
<span class="number">  52</span>    glViewport<span class="k2">(</span> <span class="n">0</span>, <span class="n">0</span>, <span class="n">800</span>, <span class="n">600</span> <span class="k2">)</span><span class="k2">;</span>
<span class="number">  53</span>
<span class="number">  54</span>    <span class="c">// Kolejka i czasomierz</span>
<span class="number">  55</span>    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">  56</span>    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> <span class="n">50</span> <span class="k2">)</span><span class="k2">;</span>
<span class="number">  57</span>
<span class="number">  58</span>    <span class="c">// Kolejka zdarzeń</span>
<span class="number">  59</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> 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> display <span class="k2">)</span> <span class="k2">)</span><span class="k2">;</span>
<span class="number">  60</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> 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">  61</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> 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">  62</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> 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> timer <span class="k2">)</span> <span class="k2">)</span><span class="k2">;</span>
<span class="number">  63</span>
<span class="number">  64</span>    <span class="c">// Pętla główna</span>
<span class="number">  65</span>    <a href="http://www.allegro.cc/manual/al_start_timer"><span class="a">al_start_timer</span></a><span class="k2">(</span> timer <span class="k2">)</span><span class="k2">;</span>
<span class="number">  66</span>    <span class="k1">while</span><span class="k2">(</span> runapp <span class="k2">)</span>
<span class="number">  67</span>    <span class="k2">{</span>
<span class="number">  68</span>        <span class="c">// Pobieranie i rozpoznawanie zdarzeń</span>
<span class="number">  69</span>        <a href="http://www.allegro.cc/manual/ALLEGRO_EVENT"><span class="a">ALLEGRO_EVENT</span></a> event<span class="k2">;</span>
<span class="number">  70</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> event_queue, <span class="k3">&amp;</span>event <span class="k2">)</span><span class="k2">;</span>
<span class="number">  71</span>
<span class="number">  72</span>        <span class="k1">switch</span><span class="k2">(</span> event.type <span class="k2">)</span>
<span class="number">  73</span>        <span class="k2">{</span>
<span class="number">  74</span>        <span class="k1">case</span> ALLEGRO_EVENT_DISPLAY_CLOSE: runapp <span class="k3">=</span> <span class="k1">false</span><span class="k2">;</span> <span class="k1">break</span><span class="k2">;</span>
<span class="number">  75</span>        <span class="k1">case</span> ALLEGRO_EVENT_TIMER: redraw <span class="k3">=</span> <span class="k1">true</span><span class="k2">;</span> <span class="k1">break</span><span class="k2">;</span>
<span class="number">  76</span>        <span class="k1">case</span> ALLEGRO_EVENT_KEY_DOWN:
<span class="number">  77</span>            <span class="k1">switch</span><span class="k2">(</span> event.keyboard.keycode <span class="k2">)</span>
<span class="number">  78</span>            <span class="k2">{</span>
<span class="number">  79</span>            <span class="k1">case</span> ALLEGRO_KEY_W: t_camera_move<span class="k2">(</span> camera, T_CAMERA_MOVE_FORWARD, <span class="k1">true</span> <span class="k2">)</span><span class="k2">;</span> <span class="k1">break</span><span class="k2">;</span>
<span class="number">  80</span>            <span class="k1">case</span> ALLEGRO_KEY_S: t_camera_move<span class="k2">(</span> camera, T_CAMERA_MOVE_BACKWARD, <span class="k1">true</span> <span class="k2">)</span><span class="k2">;</span> <span class="k1">break</span><span class="k2">;</span>
<span class="number">  81</span>            <span class="k1">case</span> ALLEGRO_KEY_A: t_camera_move<span class="k2">(</span> camera, T_CAMERA_MOVE_LEFT, <span class="k1">true</span> <span class="k2">)</span><span class="k2">;</span> <span class="k1">break</span><span class="k2">;</span>
<span class="number">  82</span>            <span class="k1">case</span> ALLEGRO_KEY_D: t_camera_move<span class="k2">(</span> camera, T_CAMERA_MOVE_RIGHT, <span class="k1">true</span> <span class="k2">)</span><span class="k2">;</span> <span class="k1">break</span><span class="k2">;</span>
<span class="number">  83</span>            <span class="k2">}</span>
<span class="number">  84</span>        <span class="k1">break</span><span class="k2">;</span>
<span class="number">  85</span>        <span class="k1">case</span> ALLEGRO_EVENT_KEY_UP:
<span class="number">  86</span>            <span class="k1">switch</span><span class="k2">(</span> event.keyboard.keycode <span class="k2">)</span>
<span class="number">  87</span>            <span class="k2">{</span>
<span class="number">  88</span>            <span class="k1">case</span> ALLEGRO_KEY_W: t_camera_move<span class="k2">(</span> camera, T_CAMERA_MOVE_FORWARD, <span class="k1">false</span> <span class="k2">)</span><span class="k2">;</span> <span class="k1">break</span><span class="k2">;</span>
<span class="number">  89</span>            <span class="k1">case</span> ALLEGRO_KEY_S: t_camera_move<span class="k2">(</span> camera, T_CAMERA_MOVE_BACKWARD, <span class="k1">false</span> <span class="k2">)</span><span class="k2">;</span> <span class="k1">break</span><span class="k2">;</span>
<span class="number">  90</span>            <span class="k1">case</span> ALLEGRO_KEY_A: t_camera_move<span class="k2">(</span> camera, T_CAMERA_MOVE_LEFT, <span class="k1">false</span> <span class="k2">)</span><span class="k2">;</span> <span class="k1">break</span><span class="k2">;</span>
<span class="number">  91</span>            <span class="k1">case</span> ALLEGRO_KEY_D: t_camera_move<span class="k2">(</span> camera, T_CAMERA_MOVE_RIGHT, <span class="k1">false</span> <span class="k2">)</span><span class="k2">;</span> <span class="k1">break</span><span class="k2">;</span>
<span class="number">  92</span>            <span class="k2">}</span>
<span class="number">  93</span>        <span class="k1">break</span><span class="k2">;</span>
<span class="number">  94</span>        <span class="k1">case</span> ALLEGRO_EVENT_MOUSE_BUTTON_DOWN:
<span class="number">  95</span>            t_camera_move<span class="k2">(</span> camera, T_CAMERA_ROTATE, <span class="k1">true</span> <span class="k2">)</span><span class="k2">;</span>
<span class="number">  96</span>            t_camera_motion<span class="k2">(</span> camera, event.mouse.x, event.mouse.y, <span class="k1">true</span> <span class="k2">)</span><span class="k2">;</span>
<span class="number">  97</span>        <span class="k1">break</span><span class="k2">;</span>
<span class="number">  98</span>        <span class="k1">case</span> ALLEGRO_EVENT_MOUSE_BUTTON_UP:
<span class="number">  99</span>            t_camera_move<span class="k2">(</span> camera, T_CAMERA_ROTATE, <span class="k1">false</span> <span class="k2">)</span><span class="k2">;</span>
<span class="number"> 100</span>        <span class="k1">break</span><span class="k2">;</span>
<span class="number"> 101</span>        <span class="k1">case</span> ALLEGRO_EVENT_MOUSE_AXES:
<span class="number"> 102</span>            t_camera_motion<span class="k2">(</span> camera, event.mouse.x, event.mouse.y, <span class="k1">false</span> <span class="k2">)</span><span class="k2">;</span>
<span class="number"> 103</span>        <span class="k1">break</span><span class="k2">;</span>
<span class="number"> 104</span>        <span class="k2">}</span>
<span class="number"> 105</span>
<span class="number"> 106</span>        <span class="c">// Renderowanie otoczenia</span>
<span class="number"> 107</span>        <span class="k1">if</span><span class="k2">(</span> 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> event_queue <span class="k2">)</span> <span class="k2">)</span>
<span class="number"> 108</span>        <span class="k2">{</span>
<span class="number"> 109</span>            redraw <span class="k3">=</span> <span class="k1">false</span><span class="k2">;</span>
<span class="number"> 110</span>            t_camera_display<span class="k2">(</span> camera <span class="k2">)</span><span class="k2">;</span>
<span class="number"> 111</span>
<span class="number"> 112</span>            glClear<span class="k2">(</span> GL_COLOR_BUFFER_BIT <span class="k3">|</span> GL_DEPTH_BUFFER_BIT <span class="k2">)</span><span class="k2">;</span>
<span class="number"> 113</span>            glCallList<span class="k2">(</span> terrain-&gt;glList <span class="k2">)</span><span class="k2">;</span>
<span class="number"> 114</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"> 115</span>        <span class="k2">}</span>
<span class="number"> 116</span>    <span class="k2">}</span>
<span class="number"> 117</span>    <a href="http://www.allegro.cc/manual/al_stop_timer"><span class="a">al_stop_timer</span></a><span class="k2">(</span> timer <span class="k2">)</span><span class="k2">;</span>
<span class="number"> 118</span>
<span class="number"> 119</span>    <span class="c">// Destruktory allegro</span>
<span class="number"> 120</span>    <a href="http://www.allegro.cc/manual/al_destroy_display"><span class="a">al_destroy_display</span></a><span class="k2">(</span> display <span class="k2">)</span><span class="k2">;</span>
<span class="number"> 121</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> event_queue <span class="k2">)</span><span class="k2">;</span>
<span class="number"> 122</span>    <a href="http://www.allegro.cc/manual/al_destroy_timer"><span class="a">al_destroy_timer</span></a><span class="k2">(</span> timer <span class="k2">)</span><span class="k2">;</span>
<span class="number"> 123</span>
<span class="number"> 124</span>    <span class="c">// Destruktory główne</span>
<span class="number"> 125</span>    t_terrain_destroy<span class="k2">(</span> terrain <span class="k2">)</span><span class="k2">;</span>
<span class="number"> 126</span>    t_camera_destroy<span class="k2">(</span> camera <span class="k2">)</span><span class="k2">;</span>
<span class="number"> 127</span>
<span class="number"> 128</span>    <span class="k1">return</span> <span class="n">0</span><span class="k2">;</span>
<span class="number"> 129</span><span class="k2">}</span>
</div></div><p>

If you are interessed in, what is this - it&#39;s a terrain generator - <a href="http://www.aculo.pl/allegro">http://www.aculo.pl/allegro</a> - terrain_generator.rar file</p><p>Please, help <img src="http://www.allegro.cc/forums/smileys/smiley.gif" alt=":)" />
</p></div>]]>
		</description>
		<author>no-reply@allegro.cc (Kamil Biały)</author>
		<pubDate>Wed, 24 Apr 2013 01:36:38 +0000</pubDate>
	</item>
	<item>
		<description><![CDATA[<div class="mockup v2"><p><span class="source-code"><a href="http://www.allegro.cc/manual/al_set_new_display_flags"><span class="a">al_set_new_display_flags</span></a></span> expects a bitfield, so you need to pass all the options you want at once. Since you&#39;re calling it twice, it&#39;s only using the second call, which doesn&#39;t have OpenGL.</p><p><span class="source-code"><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_OPENGL <span class="k3">|</span> ALLEGRO_FULLSCREEN<span class="k2">)</span><span class="k2">;</span></span>
</p></div>]]>
		</description>
		<author>no-reply@allegro.cc (Jeff Bernard)</author>
		<pubDate>Wed, 24 Apr 2013 01:47:00 +0000</pubDate>
	</item>
	<item>
		<description><![CDATA[<div class="mockup v2"><p>Wow... I had no idea about it...<br />Thanks <img src="http://www.allegro.cc/forums/smileys/smiley.gif" alt=":)" />
</p></div>]]>
		</description>
		<author>no-reply@allegro.cc (Kamil Biały)</author>
		<pubDate>Wed, 24 Apr 2013 02:25:43 +0000</pubDate>
	</item>
</rss>
