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<h1>djgpp.c</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* This code is (C) AllegroGL contributors, and double licensed under</span>
<a name="l00002"></a>00002 <span class="comment"> * the GPL and zlib licenses. See gpl.txt or zlib.txt for details.</span>
<a name="l00003"></a>00003 <span class="comment"> */</span>
<a name="l00004"></a>00004 <span class="comment">/*----------------------------------------------------------------</span>
<a name="l00005"></a>00005 <span class="comment"> * amesa.c -- Allegro-Mesa interfacing</span>
<a name="l00006"></a>00006 <span class="comment"> *----------------------------------------------------------------</span>
<a name="l00007"></a>00007 <span class="comment"> * This is the interface module for use AllegroGL with Mesa using the AMesa driver.</span>
<a name="l00008"></a>00008 <span class="comment"> */</span>
<a name="l00009"></a>00009 <span class="preprocessor">#include <string.h></span>
<a name="l00010"></a>00010
<a name="l00011"></a>00011 <span class="preprocessor">#include <GL/gl.h></span>
<a name="l00012"></a>00012 <span class="preprocessor">#include <GL/amesa.h></span>
<a name="l00013"></a>00013
<a name="l00014"></a>00014 <span class="preprocessor">#include <allegro.h></span>
<a name="l00015"></a>00015 <span class="preprocessor">#include <allegro/internal/aintern.h></span>
<a name="l00016"></a>00016
<a name="l00017"></a>00017 <span class="preprocessor">#include "<a class="code" href="alleggl_8h.html" title="Main header file for AllegroGL.">alleggl.h</a>"</span>
<a name="l00018"></a>00018 <span class="preprocessor">#include "allglint.h"</span>
<a name="l00019"></a>00019 <span class="preprocessor">#include "glvtable.h"</span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021
<a name="l00022"></a>00022 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_amesa_exit(BITMAP *bmp);
<a name="l00023"></a>00023 <span class="keyword">static</span> <span class="keywordtype">void</span> __allegro_gl_init_texture_read_format(<span class="keywordtype">void</span>);
<a name="l00024"></a>00024
<a name="l00025"></a>00025 <span class="preprocessor">#ifdef GFX_OPENGL_FULLSCREEN</span>
<a name="l00026"></a>00026 <span class="preprocessor"></span><span class="keyword">static</span> BITMAP *allegro_gl_amesa_fullscreen_init(<span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h, <span class="keywordtype">int</span> vw, <span class="keywordtype">int</span> vh, <span class="keywordtype">int</span> color_depth);
<a name="l00027"></a>00027
<a name="l00028"></a><a class="code" href="alleggl_8h.html#d939783cd83d7eee3227b608f4901441">00028</a> GFX_DRIVER <a class="code" href="alleggl_8h.html#d939783cd83d7eee3227b608f4901441">gfx_allegro_gl_fullscreen</a> =
<a name="l00029"></a>00029 {
<a name="l00030"></a>00030 <a class="code" href="alleggl_8h.html#fd00c615b3351d54382b5f883b99544f" title="Fullscreen OpenGL graphics driver for Allegro.">GFX_OPENGL_FULLSCREEN</a>,
<a name="l00031"></a>00031 empty_string,
<a name="l00032"></a>00032 empty_string,
<a name="l00033"></a>00033 <span class="stringliteral">"AllegroGL Fullscreen (AMesa)"</span>,
<a name="l00034"></a>00034 allegro_gl_amesa_fullscreen_init,
<a name="l00035"></a>00035 allegro_gl_amesa_exit,
<a name="l00036"></a>00036 NULL,
<a name="l00037"></a>00037 NULL, <span class="comment">//_xwin_vsync,</span>
<a name="l00038"></a>00038 NULL,
<a name="l00039"></a>00039 NULL, NULL, NULL,
<a name="l00040"></a>00040 <a class="code" href="videovtb_8c.html#4dadb9b189453bc9693c032ce63fc5b4" title="create_video_bitmap() overload.">allegro_gl_create_video_bitmap</a>,
<a name="l00041"></a>00041 <a class="code" href="videovtb_8c.html#69a97f6c3805246762fbefb545f20f87" title="destroy_video_bitmap() overload.">allegro_gl_destroy_video_bitmap</a>,
<a name="l00042"></a>00042 NULL, NULL, <span class="comment">/* No show/request video bitmaps */</span>
<a name="l00043"></a>00043 NULL, NULL,
<a name="l00044"></a>00044 <a class="code" href="gui_8c.html#757f94efcdb237ef53393d86cea22f60">allegro_gl_set_mouse_sprite</a>,
<a name="l00045"></a>00045 <a class="code" href="gui_8c.html#d2a2c6759997ceeb06b5394773da0606">allegro_gl_show_mouse</a>,
<a name="l00046"></a>00046 <a class="code" href="gui_8c.html#3d04d63eaa998f7b08b4420a3db1aa40">allegro_gl_hide_mouse</a>,
<a name="l00047"></a>00047 <a class="code" href="gui_8c.html#769cf11d2059483f19fd51adde6df15d">allegro_gl_move_mouse</a>,
<a name="l00048"></a>00048 NULL,
<a name="l00049"></a>00049 NULL, NULL,
<a name="l00050"></a>00050 NULL, <span class="comment">/* No fetch_mode_list */</span>
<a name="l00051"></a>00051 0, 0,
<a name="l00052"></a>00052 0,
<a name="l00053"></a>00053 0, 0,
<a name="l00054"></a>00054 0,
<a name="l00055"></a>00055 0,
<a name="l00056"></a>00056 FALSE <span class="comment">/* Windowed mode */</span>
<a name="l00057"></a>00057 };
<a name="l00058"></a>00058 <span class="preprocessor">#endif </span><span class="comment">/* GFX_OPENGL_FULLSCREEN */</span>
<a name="l00059"></a>00059
<a name="l00060"></a>00060
<a name="l00061"></a>00061 <span class="preprocessor">#ifdef GFX_OPENGL_WINDOWED</span>
<a name="l00062"></a>00062 <span class="preprocessor"></span><span class="keyword">static</span> BITMAP *allegro_gl_amesa_windowed_init(<span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h, <span class="keywordtype">int</span> vw, <span class="keywordtype">int</span> vh, <span class="keywordtype">int</span> color_depth);
<a name="l00063"></a>00063
<a name="l00064"></a><a class="code" href="alleggl_8h.html#bfb526c49d9fb066ee80c45889caa9aa">00064</a> GFX_DRIVER <a class="code" href="alleggl_8h.html#bfb526c49d9fb066ee80c45889caa9aa">gfx_allegro_gl_windowed</a> =
<a name="l00065"></a>00065 {
<a name="l00066"></a>00066 <a class="code" href="alleggl_8h.html#5fcf0497998fecc3c04bb5b6ce66782b" title="Windowed OpenGL graphics driver for Allegro.">GFX_OPENGL_WINDOWED</a>,
<a name="l00067"></a>00067 empty_string,
<a name="l00068"></a>00068 empty_string,
<a name="l00069"></a>00069 <span class="stringliteral">"AllegroGL Windowed (AMesa)"</span>,
<a name="l00070"></a>00070 allegro_gl_amesa_windowed_init,
<a name="l00071"></a>00071 allegro_gl_amesa_exit,
<a name="l00072"></a>00072 NULL,
<a name="l00073"></a>00073 NULL, <span class="comment">//_xwin_vsync,</span>
<a name="l00074"></a>00074 NULL,
<a name="l00075"></a>00075 NULL, NULL, NULL,
<a name="l00076"></a>00076 <a class="code" href="videovtb_8c.html#4dadb9b189453bc9693c032ce63fc5b4" title="create_video_bitmap() overload.">allegro_gl_create_video_bitmap</a>,
<a name="l00077"></a>00077 <a class="code" href="videovtb_8c.html#69a97f6c3805246762fbefb545f20f87" title="destroy_video_bitmap() overload.">allegro_gl_destroy_video_bitmap</a>,
<a name="l00078"></a>00078 NULL, NULL, <span class="comment">/* No show/request video bitmaps */</span>
<a name="l00079"></a>00079 NULL, NULL,
<a name="l00080"></a>00080 <a class="code" href="gui_8c.html#757f94efcdb237ef53393d86cea22f60">allegro_gl_set_mouse_sprite</a>,
<a name="l00081"></a>00081 <a class="code" href="gui_8c.html#d2a2c6759997ceeb06b5394773da0606">allegro_gl_show_mouse</a>,
<a name="l00082"></a>00082 <a class="code" href="gui_8c.html#3d04d63eaa998f7b08b4420a3db1aa40">allegro_gl_hide_mouse</a>,
<a name="l00083"></a>00083 <a class="code" href="gui_8c.html#769cf11d2059483f19fd51adde6df15d">allegro_gl_move_mouse</a>,
<a name="l00084"></a>00084 NULL,
<a name="l00085"></a>00085 NULL, NULL,
<a name="l00086"></a>00086 NULL, <span class="comment">/* No fetch_mode_list */</span>
<a name="l00087"></a>00087 0, 0,
<a name="l00088"></a>00088 0,
<a name="l00089"></a>00089 0, 0,
<a name="l00090"></a>00090 0,
<a name="l00091"></a>00091 0,
<a name="l00092"></a>00092 TRUE <span class="comment">/* Windowed mode */</span>
<a name="l00093"></a>00093 };
<a name="l00094"></a>00094 <span class="preprocessor">#endif </span><span class="comment">/* GFX_OPENGL_WINDOWED */</span>
<a name="l00095"></a>00095
<a name="l00096"></a>00096
<a name="l00097"></a>00097
<a name="l00098"></a>00098 <span class="keyword">static</span> <span class="keywordtype">int</span> allegro_gl_amesa_create_window (<span class="keywordtype">int</span> fullscreen);
<a name="l00099"></a>00099 <span class="keyword">static</span> BITMAP *allegro_gl_amesa_create_screen_bitmap (GFX_DRIVER *drv, <span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h, <span class="keywordtype">int</span> depth);
<a name="l00100"></a>00100
<a name="l00101"></a><a class="code" href="structAMESA__DATA.html">00101</a> <span class="keyword">struct </span><a class="code" href="structAMESA__DATA.html">AMESA_DATA</a> {
<a name="l00102"></a><a class="code" href="structAMESA__DATA.html#e5da4bccf425c0b736efb1f79451c1f3">00102</a> <span class="keywordtype">int</span> <a class="code" href="structAMESA__DATA.html#e5da4bccf425c0b736efb1f79451c1f3">fullscreen</a>;
<a name="l00103"></a><a class="code" href="structAMESA__DATA.html#bc7347e725af7d8deaf1108e5e495ac6">00103</a> AMesaVisual <a class="code" href="structAMESA__DATA.html#bc7347e725af7d8deaf1108e5e495ac6">visual</a>;
<a name="l00104"></a><a class="code" href="structAMESA__DATA.html#8af9a4fdb55a5a92fb1589db9eee2b1c">00104</a> AMesaBuffer <a class="code" href="structAMESA__DATA.html#8af9a4fdb55a5a92fb1589db9eee2b1c">buffer</a>;
<a name="l00105"></a><a class="code" href="structAMESA__DATA.html#a9ba5a7f6bff716b9e2eb66e53c19a0a">00105</a> AMesaContext <a class="code" href="structAMESA__DATA.html#a9ba5a7f6bff716b9e2eb66e53c19a0a">context</a>;
<a name="l00106"></a>00106 } <a class="code" href="structAMESA__DATA.html">AMESA_DATA</a>;
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <span class="keyword">static</span> <span class="keyword">struct </span><a class="code" href="structAMESA__DATA.html">AMESA_DATA</a> _amesa;
<a name="l00109"></a>00109 <span class="keyword">static</span> <span class="keyword">struct </span><a class="code" href="structallegro__gl__driver.html">allegro_gl_driver</a> allegro_gl_amesa;
<a name="l00110"></a>00110
<a name="l00111"></a>00111 <span class="keyword">static</span> BITMAP* subscreen = NULL; <span class="comment">/* Sub_bitmap of the virtual screen */</span>
<a name="l00112"></a>00112 <span class="keyword">static</span> BITMAP* saved_screen = NULL; <span class="comment">/* Saves screen address */</span>
<a name="l00113"></a>00113
<a name="l00114"></a>00114 GFX_DRIVER *amesa_gfx_driver = NULL;
<a name="l00115"></a>00115
<a name="l00116"></a>00116 <span class="keyword">static</span> GFX_VTABLE allegro_gl_generic_vtable;
<a name="l00117"></a>00117 <span class="keyword">static</span> GFX_VTABLE *old_vtable;
<a name="l00118"></a>00118
<a name="l00119"></a>00119
<a name="l00120"></a>00120
<a name="l00121"></a>00121 <span class="comment">/* allegro_gl_amesa_create_screen:</span>
<a name="l00122"></a>00122 <span class="comment"> * Creates screen bitmap.</span>
<a name="l00123"></a>00123 <span class="comment"> */</span>
<a name="l00124"></a>00124 <span class="keyword">static</span> BITMAP *allegro_gl_amesa_create_screen(<span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h, <span class="keywordtype">int</span> vw, <span class="keywordtype">int</span> vh, <span class="keywordtype">int</span> depth, <span class="keywordtype">int</span> fullscreen)
<a name="l00125"></a>00125 {
<a name="l00126"></a>00126 <span class="keywordtype">int</span> _keyboard_was_installed = FALSE;
<a name="l00127"></a>00127 <span class="keywordtype">int</span> _mouse_was_installed = FALSE;
<a name="l00128"></a>00128 GFX_VTABLE vtable, *pvtable;
<a name="l00129"></a>00129
<a name="l00130"></a>00130 pvtable = &vtable;
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="keywordflow">if</span> (keyboard_driver) {
<a name="l00133"></a>00133 _keyboard_was_installed = TRUE;
<a name="l00134"></a>00134 remove_keyboard();
<a name="l00135"></a>00135 TRACE(<span class="stringliteral">"* Note * amesa_create_screen: Removing Keyboard...\n"</span>);
<a name="l00136"></a>00136 }
<a name="l00137"></a>00137
<a name="l00138"></a>00138 <span class="keywordflow">if</span> (mouse_driver) {
<a name="l00139"></a>00139 _mouse_was_installed = TRUE;
<a name="l00140"></a>00140 remove_mouse();
<a name="l00141"></a>00141 TRACE(<span class="stringliteral">"* Note * amesa_create_screen: Removing Mouse...\n"</span>);
<a name="l00142"></a>00142 }
<a name="l00143"></a>00143
<a name="l00144"></a>00144 <span class="keywordflow">if</span> ((w == 0) && (h == 0)) {
<a name="l00145"></a>00145 w = 640;
<a name="l00146"></a>00146 h = 480;
<a name="l00147"></a>00147 }
<a name="l00148"></a>00148
<a name="l00149"></a>00149 <span class="keywordflow">if</span> ((vw > w) || (vh > h)) {
<a name="l00150"></a>00150 ustrzcpy (allegro_error, ALLEGRO_ERROR_SIZE,
<a name="l00151"></a>00151 get_config_text (<span class="stringliteral">"OpenGL drivers do not support virtual screens"</span>));
<a name="l00152"></a>00152 <span class="keywordflow">return</span> NULL;
<a name="l00153"></a>00153 }
<a name="l00154"></a>00154
<a name="l00155"></a>00155 <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.w = w;
<a name="l00156"></a>00156 <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.h = h;
<a name="l00157"></a>00157
<a name="l00158"></a>00158 <span class="keywordflow">if</span> (allegro_gl_amesa_create_window(fullscreen)) {
<a name="l00159"></a>00159 <span class="keywordflow">if</span> (fullscreen) {
<a name="l00160"></a>00160 ustrzcpy (allegro_error, ALLEGRO_ERROR_SIZE,
<a name="l00161"></a>00161 get_config_text (<span class="stringliteral">"Unable to switch in AMesa fullscreen"</span>));
<a name="l00162"></a>00162 }
<a name="l00163"></a>00163 <span class="keywordflow">else</span> {
<a name="l00164"></a>00164 ustrzcpy (allegro_error, ALLEGRO_ERROR_SIZE,
<a name="l00165"></a>00165 get_config_text (<span class="stringliteral">"Unable to create AMesa window"</span>));
<a name="l00166"></a>00166 }
<a name="l00167"></a>00167 <span class="keywordflow">return</span> NULL;
<a name="l00168"></a>00168 }
<a name="l00169"></a>00169
<a name="l00170"></a>00170 <span class="comment">/* If pixel format is Allegro compatible, set up Allegro correctly. */</span>
<a name="l00171"></a>00171
<a name="l00172"></a>00172 <span class="keywordflow">if</span> (fullscreen) {
<a name="l00173"></a>00173 <span class="preprocessor">#ifdef GFX_OPENGL_FULLSCREEN</span>
<a name="l00174"></a>00174 <span class="preprocessor"></span> <a class="code" href="alleggl_8c.html#84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen' bitmap.">allegro_gl_screen</a> = allegro_gl_amesa_create_screen_bitmap (&gfx_allegro_gl_fullscreen, w, h, <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.colour_depth);
<a name="l00175"></a>00175 <span class="preprocessor">#endif</span>
<a name="l00176"></a>00176 <span class="preprocessor"></span> }
<a name="l00177"></a>00177 <span class="keywordflow">else</span> {
<a name="l00178"></a>00178 <span class="preprocessor">#ifdef GFX_OPENGL_WINDOWED</span>
<a name="l00179"></a>00179 <span class="preprocessor"></span> <a class="code" href="alleggl_8c.html#84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen' bitmap.">allegro_gl_screen</a> = allegro_gl_amesa_create_screen_bitmap (&gfx_allegro_gl_windowed, w, h, <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.colour_depth);
<a name="l00180"></a>00180 <span class="preprocessor">#endif</span>
<a name="l00181"></a>00181 <span class="preprocessor"></span> }
<a name="l00182"></a>00182
<a name="l00183"></a>00183 <span class="keywordflow">if</span> (!<a class="code" href="alleggl_8c.html#84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen' bitmap.">allegro_gl_screen</a>) {
<a name="l00184"></a>00184 ustrzcpy (allegro_error, ALLEGRO_ERROR_SIZE,
<a name="l00185"></a>00185 get_config_text (<span class="stringliteral">"Error creating screen bitmap"</span>));
<a name="l00186"></a>00186 <span class="keywordflow">return</span> NULL;
<a name="l00187"></a>00187 }
<a name="l00188"></a>00188
<a name="l00189"></a>00189 <a class="code" href="alleggl_8c.html#1cf577416af8a45cce479746114d7acb">__allegro_gl_valid_context</a> = TRUE;
<a name="l00190"></a>00190 <a class="code" href="alleggl_8c.html#5367a90beaa783cd9c718b9f04581569">__allegro_gl_driver</a> = &allegro_gl_amesa;
<a name="l00191"></a>00191 LOCK_DATA(&_amesa, <span class="keyword">sizeof</span>(<a class="code" href="structAMESA__DATA.html">AMESA_DATA</a>));
<a name="l00192"></a>00192 LOCK_DATA(<a class="code" href="alleggl_8c.html#5367a90beaa783cd9c718b9f04581569">__allegro_gl_driver</a>, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> <a class="code" href="structallegro__gl__driver.html">allegro_gl_driver</a>));
<a name="l00193"></a>00193
<a name="l00194"></a>00194 <span class="comment">/* save the old vtable and create a copy */</span>
<a name="l00195"></a>00195 old_vtable = <a class="code" href="alleggl_8c.html#84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen' bitmap.">allegro_gl_screen</a>->vtable;
<a name="l00196"></a>00196 memcpy(&allegro_gl_generic_vtable, <a class="code" href="alleggl_8c.html#84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen' bitmap.">allegro_gl_screen</a>->vtable,
<a name="l00197"></a>00197 <span class="keyword">sizeof</span>(GFX_VTABLE));
<a name="l00198"></a>00198 <a class="code" href="alleggl_8c.html#84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen' bitmap.">allegro_gl_screen</a>->vtable = &allegro_gl_generic_vtable;
<a name="l00199"></a>00199
<a name="l00200"></a>00200 <span class="comment">/* The generic driver does not use the glvtable (since it already uses</span>
<a name="l00201"></a>00201 <span class="comment"> * 'pure' Allegro gfx functions. However it needs the AGL-specific</span>
<a name="l00202"></a>00202 <span class="comment"> * draw_glyph method. </span>
<a name="l00203"></a>00203 <span class="comment"> * Hence this hack : we call __allegro_gl__glvtable_update_vtable with</span>
<a name="l00204"></a>00204 <span class="comment"> * 'pvtable' as a parameter since we do not want the regular</span>
<a name="l00205"></a>00205 <span class="comment"> * allegro_gl_screen->vtable to be crushed.</span>
<a name="l00206"></a>00206 <span class="comment"> */</span>
<a name="l00207"></a>00207 <a class="code" href="group__glvtable.html#g92174c26d0fca4803d4d5f7cbb8716ec">__allegro_gl__glvtable_update_vtable</a>(&pvtable);
<a name="l00208"></a>00208 <a class="code" href="alleggl_8c.html#84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen' bitmap.">allegro_gl_screen</a>->vtable->draw_glyph = pvtable->draw_glyph;
<a name="l00209"></a>00209 memcpy(&_screen_vtable, <a class="code" href="alleggl_8c.html#84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen' bitmap.">allegro_gl_screen</a>->vtable, <span class="keyword">sizeof</span>(GFX_VTABLE));
<a name="l00210"></a>00210 <a class="code" href="alleggl_8c.html#84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen' bitmap.">allegro_gl_screen</a>->vtable = &_screen_vtable;
<a name="l00211"></a>00211 __allegro_gl_init_screen_mode();
<a name="l00212"></a>00212
<a name="l00213"></a>00213 <span class="comment">/* Print out OpenGL version info */</span>
<a name="l00214"></a>00214 TRACE(<span class="stringliteral">"\n\nOpenGL Version: %s\nVendor: %s\nRenderer: %s\n"</span>,
<a name="l00215"></a>00215 (<span class="keyword">const</span> <span class="keywordtype">char</span>*)glGetString(GL_VERSION),
<a name="l00216"></a>00216 (<span class="keyword">const</span> <span class="keywordtype">char</span>*)glGetString(GL_VENDOR),
<a name="l00217"></a>00217 (<span class="keyword">const</span> <span class="keywordtype">char</span>*)glGetString(GL_RENDERER));
<a name="l00218"></a>00218
<a name="l00219"></a>00219 <span class="comment">/* Prints out OpenGL extensions info and activates needed extensions */</span>
<a name="l00220"></a>00220 <a class="code" href="glext_8c.html#04c34dfd05568339ec287045e6e7dead">__allegro_gl_manage_extensions</a>();
<a name="l00221"></a>00221 __allegro_gl_init_texture_read_format();
<a name="l00222"></a>00222
<a name="l00223"></a>00223 <span class="keywordflow">if</span> (_keyboard_was_installed) {
<a name="l00224"></a>00224 install_keyboard();
<a name="l00225"></a>00225 TRACE(<span class="stringliteral">"* Note * amesa_create_screen: Installing Keyboard...\n"</span>);
<a name="l00226"></a>00226 }
<a name="l00227"></a>00227
<a name="l00228"></a>00228 <span class="keywordflow">if</span> (_mouse_was_installed) {
<a name="l00229"></a>00229 install_mouse();
<a name="l00230"></a>00230 TRACE(<span class="stringliteral">"* Note * amesa_create_screen: Installing Mouse...\n"</span>);
<a name="l00231"></a>00231 }
<a name="l00232"></a>00232
<a name="l00233"></a>00233 <span class="comment">/* XXX <rohannessian> Maybe we should leave this for autodetection? */</span>
<a name="l00234"></a>00234 gfx_capabilities |= GFX_HW_CURSOR;
<a name="l00235"></a>00235
<a name="l00236"></a>00236 <a class="code" href="structallegro__gl__info.html">allegro_gl_info</a>.is_mesa_driver = TRUE;
<a name="l00237"></a>00237 _amesa.<a class="code" href="structAMESA__DATA.html#e5da4bccf425c0b736efb1f79451c1f3">fullscreen</a> = fullscreen;
<a name="l00238"></a>00238 <span class="keywordflow">return</span> <a class="code" href="alleggl_8c.html#84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen' bitmap.">allegro_gl_screen</a>;
<a name="l00239"></a>00239 }
<a name="l00240"></a>00240
<a name="l00241"></a>00241
<a name="l00242"></a>00242
<a name="l00243"></a>00243 <span class="preprocessor">#ifdef GFX_OPENGL_WINDOWED</span>
<a name="l00244"></a>00244 <span class="preprocessor"></span><span class="comment">/* allegro_gl_amesa_windowed_init:</span>
<a name="l00245"></a>00245 <span class="comment"> * Creates screen bitmap for windowed driver.</span>
<a name="l00246"></a>00246 <span class="comment"> */</span>
<a name="l00247"></a>00247 <span class="keyword">static</span> BITMAP *allegro_gl_amesa_windowed_init(<span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h, <span class="keywordtype">int</span> vw, <span class="keywordtype">int</span> vh, <span class="keywordtype">int</span> depth)
<a name="l00248"></a>00248 {
<a name="l00249"></a>00249 <span class="keywordflow">return</span> allegro_gl_amesa_create_screen(w, h, vw, vh, depth, FALSE);
<a name="l00250"></a>00250 }
<a name="l00251"></a>00251 <span class="preprocessor">#endif</span>
<a name="l00252"></a>00252 <span class="preprocessor"></span>
<a name="l00253"></a>00253
<a name="l00254"></a>00254
<a name="l00255"></a>00255 <span class="preprocessor">#ifdef GFX_OPENGL_FULLSCREEN</span>
<a name="l00256"></a>00256 <span class="preprocessor"></span><span class="comment">/* allegro_gl_amesa_fullscreen_init:</span>
<a name="l00257"></a>00257 <span class="comment"> * Creates screen bitmap for fullscreen driver.</span>
<a name="l00258"></a>00258 <span class="comment"> */</span>
<a name="l00259"></a>00259 <span class="keyword">static</span> BITMAP *allegro_gl_amesa_fullscreen_init(<span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h, <span class="keywordtype">int</span> vw, <span class="keywordtype">int</span> vh, <span class="keywordtype">int</span> depth)
<a name="l00260"></a>00260 {
<a name="l00261"></a>00261 <span class="keywordflow">return</span> allegro_gl_amesa_create_screen(w, h, vw, vh, depth, TRUE);
<a name="l00262"></a>00262 }
<a name="l00263"></a>00263 <span class="preprocessor">#endif</span>
<a name="l00264"></a>00264 <span class="preprocessor"></span>
<a name="l00265"></a>00265
<a name="l00266"></a>00266
<a name="l00267"></a>00267 <span class="comment">/* allegro_gl_amesa_exit:</span>
<a name="l00268"></a>00268 <span class="comment"> * Shuts down the driver (shared between windowed and full-screen)</span>
<a name="l00269"></a>00269 <span class="comment"> */</span>
<a name="l00270"></a>00270 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_amesa_exit(BITMAP *bmp)
<a name="l00271"></a>00271 {
<a name="l00272"></a>00272 <span class="comment">/* Restore the screen to its intial value */</span>
<a name="l00273"></a>00273 screen = saved_screen;
<a name="l00274"></a>00274 <span class="keywordflow">if</span> (subscreen)
<a name="l00275"></a>00275 destroy_bitmap(subscreen);
<a name="l00276"></a>00276
<a name="l00277"></a>00277 amesa_gfx_driver->exit(screen);
<a name="l00278"></a>00278
<a name="l00279"></a>00279 AMesaMakeCurrent(_amesa.<a class="code" href="structAMESA__DATA.html#a9ba5a7f6bff716b9e2eb66e53c19a0a">context</a>, NULL);
<a name="l00280"></a>00280 AMesaDestroyVisual(_amesa.<a class="code" href="structAMESA__DATA.html#bc7347e725af7d8deaf1108e5e495ac6">visual</a>);
<a name="l00281"></a>00281 AMesaDestroyBuffer(_amesa.<a class="code" href="structAMESA__DATA.html#8af9a4fdb55a5a92fb1589db9eee2b1c">buffer</a>);
<a name="l00282"></a>00282 AMesaDestroyContext(_amesa.<a class="code" href="structAMESA__DATA.html#a9ba5a7f6bff716b9e2eb66e53c19a0a">context</a>);
<a name="l00283"></a>00283
<a name="l00284"></a>00284 <a class="code" href="alleggl_8c.html#1cf577416af8a45cce479746114d7acb">__allegro_gl_valid_context</a> = FALSE;
<a name="l00285"></a>00285 }
<a name="l00286"></a>00286
<a name="l00287"></a>00287
<a name="l00288"></a>00288
<a name="l00289"></a>00289 <span class="keyword">static</span> <span class="keywordtype">void</span> amesa_choose_gfx_mode(_DRIVER_INFO *driver_info, <span class="keywordtype">int</span> *w, <span class="keywordtype">int</span> *h,
<a name="l00290"></a>00290 <span class="keywordtype">int</span> *colour_depth)
<a name="l00291"></a>00291 {
<a name="l00292"></a>00292 GFX_MODE_LIST *mode_list;
<a name="l00293"></a>00293 GFX_MODE *mode;
<a name="l00294"></a>00294 <span class="keywordtype">int</span> i;
<a name="l00295"></a>00295
<a name="l00296"></a>00296 TRACE(<span class="stringliteral">"* Note * amesa_choose_gfx_mode: GFX driver : %s\n"</span>,
<a name="l00297"></a>00297 ((GFX_DRIVER*)driver_info->driver)->ascii_name);
<a name="l00298"></a>00298
<a name="l00299"></a>00299 <span class="comment">/* Try to find a mode which resolution and color depth are higher or</span>
<a name="l00300"></a>00300 <span class="comment"> * equal to those requested</span>
<a name="l00301"></a>00301 <span class="comment"> */</span>
<a name="l00302"></a>00302 mode_list = get_gfx_mode_list(driver_info->id);
<a name="l00303"></a>00303
<a name="l00304"></a>00304 <span class="keywordflow">if</span> (mode_list) {
<a name="l00305"></a>00305 TRACE(<span class="stringliteral">"* Note * amesa_choose_gfx_mode: %i modes\n"</span>,
<a name="l00306"></a>00306 mode_list->num_modes);
<a name="l00307"></a>00307
<a name="l00308"></a>00308 mode = mode_list->mode;
<a name="l00309"></a>00309
<a name="l00310"></a>00310 <span class="keywordflow">for</span> (i = 0; i < mode_list->num_modes; i++) {
<a name="l00311"></a>00311 TRACE(<span class="stringliteral">"Mode %i : %ix%i %i bpp\n"</span>, i, mode->width, mode->height,
<a name="l00312"></a>00312 mode->bpp);
<a name="l00313"></a>00313 if ((mode->width >= *w) && (mode->height >= *h) &&
<a name="l00314"></a>00314 (mode->bpp >= *colour_depth)) {
<a name="l00315"></a>00315 <span class="keywordflow">break</span>;
<a name="l00316"></a>00316 }
<a name="l00317"></a>00317 <span class="keywordflow">if</span> (mode->width) {
<a name="l00318"></a>00318 mode++;
<a name="l00319"></a>00319 }
<a name="l00320"></a>00320 }
<a name="l00321"></a>00321 <span class="keywordflow">if</span> ((mode->width) && (mode->height) && (mode->bpp)) {
<a name="l00322"></a>00322 <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.w = *w = mode->width;
<a name="l00323"></a>00323 <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.h = *h = mode->height;
<a name="l00324"></a>00324 <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.colour_depth = *colour_depth = mode->bpp;
<a name="l00325"></a>00325 }
<a name="l00326"></a>00326 TRACE(<span class="stringliteral">"Best Mode : %ix%i %i bpp\n"</span>, *w, *h, *colour_depth);
<a name="l00327"></a>00327 destroy_gfx_mode_list(mode_list);
<a name="l00328"></a>00328 }
<a name="l00329"></a>00329 <span class="keywordflow">else</span> {
<a name="l00330"></a>00330 TRACE(<span class="stringliteral">"** Warning ** amesa_choose_gfx_mode: Can not list modes...\n"</span>
<a name="l00331"></a>00331 <span class="stringliteral">"Trying %ix%i %i bpp anyway\n"</span>, *w, *h, *colour_depth);
<a name="l00332"></a>00332 }
<a name="l00333"></a>00333 }
<a name="l00334"></a>00334
<a name="l00335"></a>00335
<a name="l00336"></a>00336
<a name="l00337"></a>00337 <span class="comment">/* amesa_set_gfx_mode :</span>
<a name="l00338"></a>00338 <span class="comment"> * A light version of set_gfx_mode since when this function is reached we are</span>
<a name="l00339"></a>00339 <span class="comment"> * ALREADY in set_gfx_mode. No need to initialize some parameters.</span>
<a name="l00340"></a>00340 <span class="comment"> * Moreover we must choose our driver in saved_gfx_drivers and set the real</span>
<a name="l00341"></a>00341 <span class="comment"> * gfx driver (i.e. the GFX_OPENGL one) the right way.</span>
<a name="l00342"></a>00342 <span class="comment"> */</span>
<a name="l00343"></a>00343 <span class="keyword">static</span> <span class="keywordtype">int</span> amesa_set_gfx_mode(<span class="keywordtype">int</span> fullscreen)
<a name="l00344"></a>00344 {
<a name="l00345"></a>00345 <span class="keyword">extern</span> <span class="keywordtype">void</span> blit_end();
<a name="l00346"></a>00346 _DRIVER_INFO *driver_list;
<a name="l00347"></a>00347 <span class="keywordtype">int</span> tried = FALSE;
<a name="l00348"></a>00348 <span class="keywordtype">char</span> buf[512], tmp[64];
<a name="l00349"></a>00349 <span class="keywordtype">int</span> c, n;
<a name="l00350"></a>00350 <span class="keywordtype">int</span> card = GFX_AUTODETECT;
<a name="l00351"></a>00351 <span class="keywordtype">int</span> w = <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.w;
<a name="l00352"></a>00352 <span class="keywordtype">int</span> h = <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.h;
<a name="l00353"></a>00353 <span class="keywordtype">int</span> check_mode = TRUE, require_window = FALSE;
<a name="l00354"></a>00354
<a name="l00355"></a>00355 driver_list = <a class="code" href="alleggl_8c.html#d87e1f6cfc73f0d89ac2ef93fb3c08f5">saved_gfx_drivers</a>();
<a name="l00356"></a>00356
<a name="l00357"></a>00357 <span class="keywordflow">if</span> (!fullscreen)
<a name="l00358"></a>00358 require_window = TRUE;
<a name="l00359"></a>00359
<a name="l00360"></a>00360 <span class="comment">/* try the drivers that are listed in the config file */</span>
<a name="l00361"></a>00361 <span class="keywordflow">for</span> (n=-2; n<255; n++) {
<a name="l00362"></a>00362 <span class="keywordflow">switch</span> (n) {
<a name="l00363"></a>00363
<a name="l00364"></a>00364 <span class="keywordflow">case</span> -2:
<a name="l00365"></a>00365 <span class="comment">/* example: gfx_card_640x480x16 = */</span>
<a name="l00366"></a>00366 usprintf(buf, uconvert_ascii(<span class="stringliteral">"gfx_card_%dx%dx%d"</span>, tmp), w, h,
<a name="l00367"></a>00367 _color_depth);
<a name="l00368"></a>00368 <span class="keywordflow">break</span>;
<a name="l00369"></a>00369
<a name="l00370"></a>00370 <span class="keywordflow">case</span> -1:
<a name="l00371"></a>00371 <span class="comment">/* example: gfx_card_24bpp = */</span>
<a name="l00372"></a>00372 usprintf(buf, uconvert_ascii(<span class="stringliteral">"gfx_card_%dbpp"</span>, tmp),
<a name="l00373"></a>00373 _color_depth);
<a name="l00374"></a>00374 <span class="keywordflow">break</span>;
<a name="l00375"></a>00375
<a name="l00376"></a>00376 <span class="keywordflow">case</span> 0:
<a name="l00377"></a>00377 <span class="comment">/* example: gfx_card = */</span>
<a name="l00378"></a>00378 ustrcpy(buf, uconvert_ascii(<span class="stringliteral">"gfx_card"</span>, tmp));
<a name="l00379"></a>00379 <span class="keywordflow">break</span>;
<a name="l00380"></a>00380
<a name="l00381"></a>00381 <span class="keywordflow">default</span>:
<a name="l00382"></a>00382 <span class="comment">/* example: gfx_card1 = */</span>
<a name="l00383"></a>00383 usprintf(buf, uconvert_ascii(<span class="stringliteral">"gfx_card%d"</span>, tmp), n);
<a name="l00384"></a>00384 <span class="keywordflow">break</span>;
<a name="l00385"></a>00385 }
<a name="l00386"></a>00386 card = get_config_id(uconvert_ascii(<span class="stringliteral">"graphics"</span>, tmp), buf,
<a name="l00387"></a>00387 GFX_AUTODETECT);
<a name="l00388"></a>00388
<a name="l00389"></a>00389 <span class="keywordflow">if</span> (card != GFX_AUTODETECT) {
<a name="l00390"></a>00390
<a name="l00391"></a>00391 <span class="keywordflow">for</span> (c=0; driver_list[c].driver; c++) {
<a name="l00392"></a>00392 <span class="keywordflow">if</span> (driver_list[c].<span class="keywordtype">id</span> == card) {
<a name="l00393"></a>00393 amesa_gfx_driver = driver_list[c].driver;
<a name="l00394"></a>00394
<a name="l00395"></a>00395 <span class="keywordflow">if</span> (check_mode) {
<a name="l00396"></a>00396 <span class="keywordflow">if</span> ( ((require_window) && (!amesa_gfx_driver->windowed))
<a name="l00397"></a>00397 || ((!require_window)
<a name="l00398"></a>00398 && (amesa_gfx_driver->windowed))) {
<a name="l00399"></a>00399
<a name="l00400"></a>00400 amesa_gfx_driver = NULL;
<a name="l00401"></a>00401 <span class="keywordflow">continue</span>;
<a name="l00402"></a>00402 }
<a name="l00403"></a>00403 }
<a name="l00404"></a>00404 <span class="keywordflow">break</span>;
<a name="l00405"></a>00405 }
<a name="l00406"></a>00406 }
<a name="l00407"></a>00407
<a name="l00408"></a>00408 <span class="keywordflow">if</span> (amesa_gfx_driver) {
<a name="l00409"></a>00409 tried = TRUE;
<a name="l00410"></a>00410 amesa_gfx_driver->name = amesa_gfx_driver->desc
<a name="l00411"></a>00411 = get_config_text(amesa_gfx_driver->ascii_name);
<a name="l00412"></a>00412
<a name="l00413"></a>00413 amesa_choose_gfx_mode(&driver_list[c], &w, &h, &_color_depth);
<a name="l00414"></a>00414
<a name="l00415"></a>00415 screen = amesa_gfx_driver->init(w, h, 0, 0, _color_depth);
<a name="l00416"></a>00416 <span class="keywordflow">if</span> (screen) {
<a name="l00417"></a>00417 <span class="keywordflow">break</span>;
<a name="l00418"></a>00418 }
<a name="l00419"></a>00419 <span class="keywordflow">else</span> {
<a name="l00420"></a>00420 amesa_gfx_driver = NULL;
<a name="l00421"></a>00421 }
<a name="l00422"></a>00422 }
<a name="l00423"></a>00423 }
<a name="l00424"></a>00424 <span class="keywordflow">else</span> {
<a name="l00425"></a>00425 <span class="keywordflow">if</span> (n > 1) {
<a name="l00426"></a>00426 <span class="keywordflow">break</span>;
<a name="l00427"></a>00427 }
<a name="l00428"></a>00428 }
<a name="l00429"></a>00429 }
<a name="l00430"></a>00430
<a name="l00431"></a>00431 <span class="keywordflow">if</span> (!tried) {
<a name="l00432"></a>00432 <span class="keywordflow">for</span> (c=0; driver_list[c].driver; c++) {
<a name="l00433"></a>00433
<a name="l00434"></a>00434 <span class="keywordflow">if</span> (driver_list[c].autodetect) {
<a name="l00435"></a>00435
<a name="l00436"></a>00436 amesa_gfx_driver = driver_list[c].driver;
<a name="l00437"></a>00437 <span class="keywordflow">if</span> (check_mode) {
<a name="l00438"></a>00438 <span class="keywordflow">if</span> (((require_window) && (!amesa_gfx_driver->windowed)) ||
<a name="l00439"></a>00439 ((!require_window) && (amesa_gfx_driver->windowed)))
<a name="l00440"></a>00440 <span class="keywordflow">continue</span>;
<a name="l00441"></a>00441 }
<a name="l00442"></a>00442
<a name="l00443"></a>00443 amesa_gfx_driver->name = amesa_gfx_driver->desc
<a name="l00444"></a>00444 = get_config_text(amesa_gfx_driver->ascii_name);
<a name="l00445"></a>00445
<a name="l00446"></a>00446 amesa_choose_gfx_mode(&driver_list[c], &w, &h, &_color_depth);
<a name="l00447"></a>00447
<a name="l00448"></a>00448 screen = amesa_gfx_driver->init(w, h, 0, 0, _color_depth);
<a name="l00449"></a>00449
<a name="l00450"></a>00450 <span class="keywordflow">if</span> (screen) {
<a name="l00451"></a>00451 <span class="keywordflow">break</span>;
<a name="l00452"></a>00452 }
<a name="l00453"></a>00453 }
<a name="l00454"></a>00454 }
<a name="l00455"></a>00455 }
<a name="l00456"></a>00456
<a name="l00457"></a>00457 <span class="keywordflow">if</span> (!screen) {
<a name="l00458"></a>00458 amesa_gfx_driver = NULL;
<a name="l00459"></a>00459 <span class="keywordflow">return</span> -1;
<a name="l00460"></a>00460 }
<a name="l00461"></a>00461
<a name="l00462"></a>00462 LOCK_DATA(amesa_gfx_driver, <span class="keyword">sizeof</span>(GFX_DRIVER));
<a name="l00463"></a>00463 _register_switch_bitmap(screen, NULL);
<a name="l00464"></a>00464
<a name="l00465"></a>00465 <span class="keywordflow">return</span> 0;
<a name="l00466"></a>00466 }
<a name="l00467"></a>00467
<a name="l00468"></a>00468
<a name="l00469"></a>00469
<a name="l00470"></a>00470 <span class="comment">/* create_window:</span>
<a name="l00471"></a>00471 <span class="comment"> * Based on Bernhard Tschirren AMesa GLUT code.</span>
<a name="l00472"></a>00472 <span class="comment"> */</span>
<a name="l00473"></a>00473 <span class="keyword">static</span> <span class="keywordtype">int</span> allegro_gl_amesa_create_window (<span class="keywordtype">int</span> fullscreen)
<a name="l00474"></a>00474 {
<a name="l00475"></a>00475 <span class="keywordflow">if</span> (!<a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.colour_depth)
<a name="l00476"></a>00476 <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.colour_depth = _color_depth;
<a name="l00477"></a>00477
<a name="l00478"></a>00478 set_color_depth(<a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.colour_depth);
<a name="l00479"></a>00479
<a name="l00480"></a>00480 <span class="keywordflow">if</span> (amesa_set_gfx_mode(fullscreen)) {
<a name="l00481"></a>00481 TRACE(<span class="stringliteral">"** ERROR ** amesa_create_window: Unable to set a gfx mode!\n"</span>);
<a name="l00482"></a>00482 <span class="keywordflow">return</span> 1;
<a name="l00483"></a>00483 }
<a name="l00484"></a>00484
<a name="l00485"></a>00485 _amesa.<a class="code" href="structAMESA__DATA.html#bc7347e725af7d8deaf1108e5e495ac6">visual</a> = AMesaCreateVisual(<a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.doublebuffered,
<a name="l00486"></a>00486 <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.colour_depth,
<a name="l00487"></a>00487 GL_TRUE, <span class="comment">/* RGBA Mode */</span>
<a name="l00488"></a>00488 <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.depth_size,
<a name="l00489"></a>00489 <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.stencil_size,
<a name="l00490"></a>00490 <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.accum_size.rgba.r,
<a name="l00491"></a>00491 <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.accum_size.rgba.g,
<a name="l00492"></a>00492 <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.accum_size.rgba.b,
<a name="l00493"></a>00493 <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.accum_size.rgba.a
<a name="l00494"></a>00494 );
<a name="l00495"></a>00495 <span class="keywordflow">if</span> (!_amesa.<a class="code" href="structAMESA__DATA.html#bc7347e725af7d8deaf1108e5e495ac6">visual</a>) {
<a name="l00496"></a>00496 TRACE(<span class="stringliteral">"** ERROR ** amesa_create_window: Unable to create AMesa "</span>
<a name="l00497"></a>00497 <span class="stringliteral">"Visual\n"</span>);
<a name="l00498"></a>00498 <span class="keywordflow">return</span> 1;
<a name="l00499"></a>00499 }
<a name="l00500"></a>00500
<a name="l00501"></a>00501 _amesa.<a class="code" href="structAMESA__DATA.html#a9ba5a7f6bff716b9e2eb66e53c19a0a">context</a> = AMesaCreateContext(_amesa.<a class="code" href="structAMESA__DATA.html#bc7347e725af7d8deaf1108e5e495ac6">visual</a>, NULL);
<a name="l00502"></a>00502 <span class="keywordflow">if</span> (!_amesa.<a class="code" href="structAMESA__DATA.html#a9ba5a7f6bff716b9e2eb66e53c19a0a">context</a>) {
<a name="l00503"></a>00503 TRACE(<span class="stringliteral">"** ERROR ** amesa_create_window: Unable to create AMesa "</span>
<a name="l00504"></a>00504 <span class="stringliteral">"Context\n"</span>);
<a name="l00505"></a>00505 AMesaDestroyVisual(_amesa.<a class="code" href="structAMESA__DATA.html#bc7347e725af7d8deaf1108e5e495ac6">visual</a>);
<a name="l00506"></a>00506 <span class="keywordflow">return</span> 1;
<a name="l00507"></a>00507 }
<a name="l00508"></a>00508
<a name="l00509"></a>00509 <span class="keywordflow">if</span> ((screen->w != <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.w)
<a name="l00510"></a>00510 || (screen->h != <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.h)) {
<a name="l00511"></a>00511
<a name="l00512"></a>00512 subscreen = create_sub_bitmap(screen, 0, 0,
<a name="l00513"></a>00513 <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.w, <a class="code" href="structallegro__gl__display__info.html">allegro_gl_display_info</a>.h);
<a name="l00514"></a>00514
<a name="l00515"></a>00515 _amesa.<a class="code" href="structAMESA__DATA.html#8af9a4fdb55a5a92fb1589db9eee2b1c">buffer</a> = AMesaCreateBuffer(_amesa.<a class="code" href="structAMESA__DATA.html#bc7347e725af7d8deaf1108e5e495ac6">visual</a>, subscreen);
<a name="l00516"></a>00516
<a name="l00517"></a>00517 TRACE(<span class="stringliteral">"** Note ** amesa_create_window: Screen : %ix%i %i bpp\n"</span>,
<a name="l00518"></a>00518 ubscreen->w, subscreen->h, bitmap_color_depth(subscreen));
<a name="l00519"></a>00519 }
<a name="l00520"></a>00520 <span class="keywordflow">else</span> {
<a name="l00521"></a>00521 _amesa.<a class="code" href="structAMESA__DATA.html#8af9a4fdb55a5a92fb1589db9eee2b1c">buffer</a> = AMesaCreateBuffer(_amesa.<a class="code" href="structAMESA__DATA.html#bc7347e725af7d8deaf1108e5e495ac6">visual</a>, screen);
<a name="l00522"></a>00522 }
<a name="l00523"></a>00523
<a name="l00524"></a>00524 <span class="keywordflow">if</span> (!_amesa.<a class="code" href="structAMESA__DATA.html#8af9a4fdb55a5a92fb1589db9eee2b1c">buffer</a>) {
<a name="l00525"></a>00525 AMesaDestroyContext(_amesa.<a class="code" href="structAMESA__DATA.html#a9ba5a7f6bff716b9e2eb66e53c19a0a">context</a>);
<a name="l00526"></a>00526 AMesaDestroyVisual(_amesa.<a class="code" href="structAMESA__DATA.html#bc7347e725af7d8deaf1108e5e495ac6">visual</a>);
<a name="l00527"></a>00527 TRACE(<span class="stringliteral">"** ERROR ** amesa_create_window: Unable to create AMesa "</span>
<a name="l00528"></a>00528 <span class="stringliteral">"Buffer\n"</span>);
<a name="l00529"></a>00529 <span class="keywordflow">return</span> 1;
<a name="l00530"></a>00530 }
<a name="l00531"></a>00531
<a name="l00532"></a>00532 <span class="keywordflow">if</span> (!AMesaMakeCurrent(_amesa.<a class="code" href="structAMESA__DATA.html#a9ba5a7f6bff716b9e2eb66e53c19a0a">context</a>, _amesa.<a class="code" href="structAMESA__DATA.html#8af9a4fdb55a5a92fb1589db9eee2b1c">buffer</a>)) {
<a name="l00533"></a>00533 AMesaDestroyContext(_amesa.<a class="code" href="structAMESA__DATA.html#a9ba5a7f6bff716b9e2eb66e53c19a0a">context</a>);
<a name="l00534"></a>00534 AMesaDestroyVisual(_amesa.<a class="code" href="structAMESA__DATA.html#bc7347e725af7d8deaf1108e5e495ac6">visual</a>);
<a name="l00535"></a>00535 AMesaDestroyBuffer(_amesa.<a class="code" href="structAMESA__DATA.html#8af9a4fdb55a5a92fb1589db9eee2b1c">buffer</a>);
<a name="l00536"></a>00536 TRACE(<span class="stringliteral">"** ERROR ** amesa_create_window: Unable to make context "</span>
<a name="l00537"></a>00537 <span class="stringliteral">"current\n"</span>);
<a name="l00538"></a>00538 <span class="keywordflow">return</span> 1;
<a name="l00539"></a>00539 }
<a name="l00540"></a>00540
<a name="l00541"></a>00541 saved_screen = screen;
<a name="l00542"></a>00542 <span class="keywordflow">return</span> 0;
<a name="l00543"></a>00543 }
<a name="l00544"></a>00544
<a name="l00545"></a>00545
<a name="l00546"></a>00546
<a name="l00547"></a>00547 <span class="keyword">static</span> BITMAP *allegro_gl_amesa_create_screen_bitmap (GFX_DRIVER *drv,
<a name="l00548"></a>00548 <span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h, <span class="keywordtype">int</span> depth)
<a name="l00549"></a>00549 {
<a name="l00550"></a>00550 drv->w = w;
<a name="l00551"></a>00551 drv->h = h;
<a name="l00552"></a>00552 drv->linear = amesa_gfx_driver->linear;
<a name="l00553"></a>00553 drv->bank_size = amesa_gfx_driver->bank_size;
<a name="l00554"></a>00554 drv->bank_gran = amesa_gfx_driver->bank_gran;
<a name="l00555"></a>00555 drv->vid_mem = amesa_gfx_driver->vid_mem;
<a name="l00556"></a>00556 drv->vid_phys_base = amesa_gfx_driver->vid_phys_base;
<a name="l00557"></a>00557
<a name="l00558"></a>00558 <span class="keywordflow">return</span> AMesaGetColorBuffer(_amesa.<a class="code" href="structAMESA__DATA.html#8af9a4fdb55a5a92fb1589db9eee2b1c">buffer</a>, AMESA_ACTIVE);
<a name="l00559"></a>00559 }
<a name="l00560"></a>00560
<a name="l00561"></a>00561
<a name="l00562"></a>00562
<a name="l00563"></a>00563 <span class="keyword">static</span> <span class="keywordtype">void</span> __allegro_gl_init_texture_read_format(<span class="keywordtype">void</span>)
<a name="l00564"></a>00564 {
<a name="l00565"></a>00565 <span class="comment">/* 8 bpp (true color mode) */</span>
<a name="l00566"></a>00566 <a class="code" href="texture_8c.html#8416d9ed6c835ba6572ab1e29fe729f2">__allegro_gl_texture_read_format</a>[0] = GL_UNSIGNED_BYTE_3_3_2;
<a name="l00567"></a>00567
<a name="l00568"></a>00568 <span class="comment">/* 15 bpp */</span>
<a name="l00569"></a>00569 <span class="keywordflow">if</span> (_rgb_r_shift_15 > _rgb_b_shift_15) {
<a name="l00570"></a>00570 <a class="code" href="texture_8c.html#8416d9ed6c835ba6572ab1e29fe729f2">__allegro_gl_texture_read_format</a>[1] = GL_UNSIGNED_SHORT_5_5_5_1;
<a name="l00571"></a>00571 <span class="keywordflow">if</span> (_rgb_r_shift_15 == 10) {
<a name="l00572"></a>00572 <a class="code" href="texture_8c.html#7e74a22ac957103e91218377585b1b76">__allegro_gl_texture_components</a>[1] = GL_BGRA;
<a name="l00573"></a>00573 }
<a name="l00574"></a>00574 }
<a name="l00575"></a>00575 <span class="keywordflow">else</span> {
<a name="l00576"></a>00576 <a class="code" href="texture_8c.html#8416d9ed6c835ba6572ab1e29fe729f2">__allegro_gl_texture_read_format</a>[1] = GL_UNSIGNED_SHORT_1_5_5_5_REV;
<a name="l00577"></a>00577 }
<a name="l00578"></a>00578
<a name="l00579"></a>00579 <span class="comment">/* 16 bpp */</span>
<a name="l00580"></a>00580 <span class="keywordflow">if</span> (_rgb_r_shift_16 > _rgb_b_shift_16) {
<a name="l00581"></a>00581 <a class="code" href="texture_8c.html#8416d9ed6c835ba6572ab1e29fe729f2">__allegro_gl_texture_read_format</a>[2] = GL_UNSIGNED_SHORT_5_6_5;
<a name="l00582"></a>00582 }
<a name="l00583"></a>00583 <span class="keywordflow">else</span> {
<a name="l00584"></a>00584 <a class="code" href="texture_8c.html#8416d9ed6c835ba6572ab1e29fe729f2">__allegro_gl_texture_read_format</a>[2] = GL_UNSIGNED_SHORT_5_6_5_REV;
<a name="l00585"></a>00585 }
<a name="l00586"></a>00586
<a name="l00587"></a>00587 <span class="comment">/* 24 bpp */</span>
<a name="l00588"></a>00588 <a class="code" href="texture_8c.html#8416d9ed6c835ba6572ab1e29fe729f2">__allegro_gl_texture_read_format</a>[3] = GL_UNSIGNED_BYTE;
<a name="l00589"></a>00589
<a name="l00590"></a>00590 <span class="comment">/* 32 bpp */</span>
<a name="l00591"></a>00591 <span class="keywordflow">if</span> (_rgb_r_shift_32 > _rgb_b_shift_32) {
<a name="l00592"></a>00592 <a class="code" href="texture_8c.html#8416d9ed6c835ba6572ab1e29fe729f2">__allegro_gl_texture_read_format</a>[4] = GL_UNSIGNED_INT_8_8_8_8_REV;
<a name="l00593"></a>00593 <span class="keywordflow">if</span> (_rgb_r_shift_32 == 16) {
<a name="l00594"></a>00594 <a class="code" href="texture_8c.html#7e74a22ac957103e91218377585b1b76">__allegro_gl_texture_components</a>[4] = GL_BGRA;
<a name="l00595"></a>00595 }
<a name="l00596"></a>00596 }
<a name="l00597"></a>00597 <span class="keywordflow">else</span> {
<a name="l00598"></a>00598 <a class="code" href="texture_8c.html#8416d9ed6c835ba6572ab1e29fe729f2">__allegro_gl_texture_read_format</a>[4] = GL_UNSIGNED_BYTE;
<a name="l00599"></a>00599 }
<a name="l00600"></a>00600 }
<a name="l00601"></a>00601
<a name="l00602"></a>00602
<a name="l00603"></a>00603
<a name="l00604"></a>00604 <span class="comment">/******************************/</span>
<a name="l00605"></a>00605 <span class="comment">/* AllegroGL driver functions */</span>
<a name="l00606"></a>00606 <span class="comment">/******************************/</span>
<a name="l00607"></a>00607
<a name="l00608"></a>00608 <span class="comment">/* flip:</span>
<a name="l00609"></a>00609 <span class="comment"> * Does a page flip / double buffer copy / whatever it really is.</span>
<a name="l00610"></a>00610 <span class="comment"> */</span>
<a name="l00611"></a>00611 <span class="keyword">static</span> <span class="keywordtype">void</span> amesa_flip (<span class="keywordtype">void</span>)
<a name="l00612"></a>00612 {
<a name="l00613"></a>00613 AMesaSwapBuffers (_amesa.<a class="code" href="structAMESA__DATA.html#8af9a4fdb55a5a92fb1589db9eee2b1c">buffer</a>);
<a name="l00614"></a>00614 }
<a name="l00615"></a>00615
<a name="l00616"></a>00616
<a name="l00617"></a>00617
<a name="l00618"></a>00618 <span class="comment">/* gl_on, gl_off:</span>
<a name="l00619"></a>00619 <span class="comment"> * Switches to/from GL mode.</span>
<a name="l00620"></a>00620 <span class="comment"> */</span>
<a name="l00621"></a>00621 <span class="keyword">static</span> <span class="keywordtype">void</span> amesa_gl_on (<span class="keywordtype">void</span>)
<a name="l00622"></a>00622 {
<a name="l00623"></a>00623 }
<a name="l00624"></a>00624
<a name="l00625"></a>00625
<a name="l00626"></a>00626
<a name="l00627"></a>00627 <span class="keyword">static</span> <span class="keywordtype">void</span> amesa_gl_off (<span class="keywordtype">void</span>)
<a name="l00628"></a>00628 {
<a name="l00629"></a>00629 }
<a name="l00630"></a>00630
<a name="l00631"></a>00631
<a name="l00632"></a>00632
<a name="l00633"></a>00633 <span class="comment">/*****************/</span>
<a name="l00634"></a>00634 <span class="comment">/* Driver struct */</span>
<a name="l00635"></a>00635 <span class="comment">/*****************/</span>
<a name="l00636"></a>00636
<a name="l00637"></a>00637 <span class="keyword">static</span> <span class="keyword">struct </span><a class="code" href="structallegro__gl__driver.html">allegro_gl_driver</a> allegro_gl_amesa = {
<a name="l00638"></a>00638 amesa_flip,
<a name="l00639"></a>00639 amesa_gl_on,
<a name="l00640"></a>00640 amesa_gl_off
<a name="l00641"></a>00641 };
<a name="l00642"></a>00642
</pre></div><hr size="1"><address style="text-align: right;"><small>Generated on Mon Nov 12 11:05:31 2007 for AllegroGL by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.2 </small></address>
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