source: Daodan/src/daodan_gl.c@ 304

#include "daodan_gl.h"

#define maxmodes (104) // Dirty hack to add more resolutions, it really should only be 16 ^_^

const M3tDisplayMode daodan_reslist[] = {
        { 640,  480,  0, 0 },
        { 800,  600,  0, 0 },
        { 1024, 768,  0, 0 },
        { 1280, 1024, 0, 0 },
        { 1600, 1200, 0, 0 },
        { 1920, 1080, 0, 0 },
};

const short daodan_resmodes[] = { 16, 32 };

unsigned int ONICALL daodan_enumerate_valid_display_modes(M3tDisplayMode modes[maxmodes])
{
        unsigned int vmodes = 0;
        unsigned int screen_x = GetSystemMetrics(SM_CXSCREEN);
        unsigned int screen_y = GetSystemMetrics(SM_CYSCREEN);
        
        int i, j;
        
        for (i = 0; i < sizeof(daodan_resmodes) / sizeof(short); i ++)
        {
                for (j = 0; j < sizeof(daodan_reslist) / sizeof(M3tDisplayMode); j ++)
                        if (modes[vmodes].Width != screen_x && modes[vmodes].Height != screen_y)
                        {
                                modes[vmodes].Width  = daodan_reslist[j].Width;
                                modes[vmodes].Height = daodan_reslist[j].Height;
                                modes[vmodes].Depth  = daodan_resmodes[i];
                                
                                if (++vmodes == maxmodes - sizeof(daodan_reslist) / sizeof(M3tDisplayMode) + i)
                                        goto modesfull;
                        }
                
                modes[vmodes].Width  = GetSystemMetrics(SM_CXSCREEN);
                modes[vmodes].Height = GetSystemMetrics(SM_CYSCREEN);
                modes[vmodes].Depth  = daodan_resmodes[i];
                if (++vmodes == maxmodes - sizeof(daodan_reslist) / sizeof(M3tDisplayMode) + i)
                        goto modesfull;
        }
        
        modesfull:
        return vmodes;
}