progs/openvg/trivial/clear.c

   1 #include "eglcommon.h"
   2
   3 #include <VG/openvg.h>
   4 #include <stdio.h>
   5
   6 float red_color[4] = {1.0, 0.0, 0.0, 1.0};
   7 float blue_color[4] = {0.0, 0.0, 1.0, 1.0};
   8
   9 static void
  10 init(void)
  11 {
  12 }
  13
  14 /* new window size or exposure */
  15 static void
  16 reshape(int w, int h)
  17 {
  18    vgLoadIdentity();
  19 }
  20
  21 static void
  22 draw(void)
  23 {
  24     VGint scissor[4] = {100, 100, 25, 25};
  25     vgSetfv(VG_CLEAR_COLOR, 4, red_color);
  26     vgClear(0, 0, window_width(), window_height());
  27
  28     vgSetfv(VG_CLEAR_COLOR, 4, blue_color);
  29     vgClear(50, 50, 50, 50);
  30
  31     //vgSetiv(VG_SCISSOR_RECTS, 4, scissor);
  32     //vgSeti(VG_SCISSORING, VG_TRUE);
  33     vgCopyPixels(100, 100, 50, 50, 50, 50);
  34     vgClear(150, 150, 50, 50);
  35 }
  36
  37
  38 int main(int argc, char **argv)
  39 {
  40    return run(argc, argv, init, reshape,
  41               draw, 0);
  42 }