test code for OpenVG on Raspberry Pi using https://github.com/ajstarks/openvg

hellovg.c

// first OpenVG program
// Anthony Starks (ajstarks@gmail.com)
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <VG/openvg.h>
#include <VG/vgu.h>
#include "fontinfo.h"
#include "shapes.h"
#include "MTLmr3m.inc"
 
Fontinfo Font_MTLmr;
 
int main(int argc, char *argv[]) {
    int width, height;
    char s[3];
 
    init(&width, &height);                 // Graphics initialization
 
    Font_MTLmr = loadfont(MTLmr_glyphPoints,
        MTLmr_glyphPointIndices,
        MTLmr_glyphInstructions,
        MTLmr_glyphInstructionIndices,
        MTLmr_glyphInstructionCounts,
        MTLmr_glyphAdvances,
        MTLmr_characterMap,
        MTLmr_glyphCount);
 
    Start(width, height);                  // Start the picture
    Background(0, 0, 0);                   // Black background
    Fill(44, 77, 232, 1);                  // Big blue marble
    Circle(width / 2, 0, width);               // The "world"
    Fill(255, 255, 255, 1);                // White text
    TextMid(width / 2, (height / 2), argv[1], Font_MTLmr, width / 10);  // Greetings 
    End();                         // End the picture
 
    fgets(s, 2, stdin);                // look at the pic, end with [RETURN]
    finish();                      // Graphics cleanup
    exit(0);
}