1 if( ! al_init() )
2 {
3 GetLogger
()->LogError
( "al_init failed" );
4 return false;
5 }
6
7 //
8 // Initialise the display
9 //
10
11 m_nGFXWidth
= rConfig.m_nGraphicsWidth
;
12 m_nGFXHeight
= rConfig.m_nGraphicsHeight
;
13
14 // Check the values are not too low or high
15
16 ALLEGRO_DISPLAY_MODE disp_data_minimum
;
17 ALLEGRO_DISPLAY_MODE disp_data_maximum
;
18
19 al_get_display_mode( 0,
&disp_data_minimum
); // First mode
20 al_get_display_mode( al_get_num_display_modes() - 1,
&disp_data_maximum
); // Last mode (zero index)
21
22 if( m_nGFXWidth
< static_cast< unsigned int >( disp_data_minimum.width
)
23 || m_nGFXHeight
< static_cast< unsigned int >( disp_data_minimum.height
) )
24 {
25 std::string strWarningMessage
;
26 utls::FormatString
( strWarningMessage,
27 "The supplied resolution (%ux%u) appears to be too low and not supported on this system.",
28 m_nGFXWidth,
29 m_nGFXHeight
);
30
31 GetLogger
()->LogWarning
( strWarningMessage
);
32
33 // Attempt to continue
34 }
35 else if( m_nGFXWidth
> static_cast< unsigned int >( disp_data_maximum.width
)
36 || m_nGFXHeight
> static_cast< unsigned int >( disp_data_maximum.height
) )
37 {
38 std::string strWarningMessage
;
39 utls::FormatString
( strWarningMessage,
40 "The supplied resolution (%ux%u) appears to be too high and not supported on this system.",
41 m_nGFXWidth,
42 m_nGFXHeight
);
43
44 GetLogger
()->LogWarning
( strWarningMessage
);
45
46 // Attempt to continue
47 }
48
49 m_fShowSepiaOverlay
= rConfig.fShowSepiaOverlay
;
50
51 // Enumerate display modes
52
53 if( rConfig.fFullscreen
)
54 {
55 size_t nTotalModes
= al_get_num_display_modes();
56
57 bool fRequestedModeFoundInSupportedModes
= false;
58
59 std::vector
< std::string
> vecModes
;
60
61 for( size_t nMode
= 0 ; nMode
< nTotalModes
; ++nMode
)
62 {
63 ALLEGRO_DISPLAY_MODE disp_data
;
64 al_get_display_mode( nMode,
&disp_data
);
65
66 if( disp_data.width
== static_cast< int >( m_nGFXWidth
)
67 && disp_data.height
== static_cast< int >( m_nGFXHeight
) )
68 {
69 fRequestedModeFoundInSupportedModes
= true;
70 }
71
72 std::string strModeBufer
;
73 utls::FormatString
( strModeBufer,
74 "Mode %u: %ux%u Format %u Refresh Rate %u",
75 nMode,
76 disp_data.width,
77 disp_data.height,
78 disp_data.format,
79 disp_data.refresh_rate
);
80
81 vecModes.push_back
( strModeBufer
);
82 }
83
84 if( ! fRequestedModeFoundInSupportedModes
)
85 {
86 std::string strWarningMessage
;
87 utls::FormatString
( strWarningMessage,
88 "Requested graphics mode [%ux%u] does not appear to be supported by the driver.",
89 m_nGFXWidth,
90 m_nGFXHeight
);
91
92 GetLogger
()->LogWarning
( strWarningMessage
);
93 MessageBox
( NULL, strWarningMessage.c_str
(),
"Warning", MB_OK
);
94
95 auto it
= vecModes.begin
();
96 auto itEnd
= vecModes.end
();
97
98 for( ; it
!= itEnd
; ++it
)
99 {
100 GetLogger
()->LogInfo
( *it
);
101 }
102
103 // Despite this, try to carry on...
104 }
105
106 if( rConfig.fForceOpenGL
)
107 {
108 al_set_new_display_flags( ALLEGRO_OPENGL
| ALLEGRO_FULLSCREEN
);
109 }
110 else
111 {
112 al_set_new_display_flags( ALLEGRO_FULLSCREEN
);
113 }
114
115 m_pDisplay
= al_create_display( m_nGFXWidth, m_nGFXHeight
);
116 }
117 else
118 {
119 m_pDisplay
= al_create_display( m_nGFXWidth, m_nGFXHeight
);
120 }
for reference I'm using Allegro 5.0.10. I can profile my code, but not the allegro library properly.
)