progs/openvg/trivial/filter.c

   1 #include "eglcommon.h"
   2
   3 #include <VG/openvg.h>
   4
   5 #include <math.h>
   6 #include <stdlib.h>
   7 #include <stdio.h>
   8
   9 const VGfloat white_color[4] = {1.0, 1.0, 1.0, 1.0};
  10 const VGfloat color[4] = {1.0, 1.0, 1.0, 0.5};
  11
  12 VGImage srcImg;
  13 VGImage dstImg;
  14
  15 VGPaint fill;
  16
  17 VGfloat bgCol[4] = {0.906f, 0.914f, 0.761f, 1.0f};
  18
  19 static void
  20 init(void)
  21 {
  22     VGfloat red[4];
  23     VGfloat grey[4];
  24     VGfloat orange[4];
  25     VGfloat blue[4];
  26     VGfloat black[4];
  27     VGfloat white[4];
  28     VGshort transKernel[49] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
  29
  30     red[0] = 0.6710f;
  31     red[1] = 0.1060f;
  32     red[2] = 0.1330f;
  33     red[3] = 1.0f;
  34
  35     grey[0] = 0.6347f;
  36     grey[1] = 0.6561f;
  37     grey[2] = 0.6057f;
  38     grey[3] = 1.0f;
  39
  40     orange[0] = 1.0000f;
  41     orange[1] = 0.8227f;
  42     orange[2] = 0.5057f;
  43     orange[3] = 1.0f;
  44
  45     blue[0] = 0.0000f;
  46     blue[1] = 0.6908f;
  47     blue[2] = 0.8595f;
  48     blue[3] = 1.0f;
  49
  50     black[0] = 0;
  51     black[1] = 0;
  52     black[2] = 0;
  53     black[3] = 1.0f;
  54
  55     white[0] = 1;
  56     white[1] = 1;
  57     white[2] = 1;
  58     white[3] = 1.0f;
  59
  60     vgSetfv(VG_TILE_FILL_COLOR, 4, blue);
  61
  62     vgSeti(VG_FILTER_CHANNEL_MASK, 14);
  63
  64     /* Setup images */
  65     srcImg = vgCreateImage(VG_sRGBA_8888, 32, 32,
  66                            VG_IMAGE_QUALITY_NONANTIALIASED);
  67     dstImg = vgCreateImage(VG_sRGBA_8888, 32, 32,
  68                            VG_IMAGE_QUALITY_NONANTIALIASED);
  69
  70     vgSetfv(VG_CLEAR_COLOR, 4, black);
  71     vgClearImage(srcImg, 0, 0, 32, 32);
  72     vgSetfv(VG_CLEAR_COLOR, 4, red);
  73     vgClearImage(srcImg, 3, 3, 27, 27);
  74
  75     vgSetfv(VG_CLEAR_COLOR, 4, orange);
  76     vgClearImage(dstImg, 0, 0, 32, 32);
  77
  78     transKernel[8] = 1;
  79     vgConvolve(dstImg, srcImg, 3, 3, 3, 0, transKernel,
  80                1, 0, VG_TILE_FILL);
  81 }
  82
  83 /* new window size or exposure */
  84 static void
  85 reshape(int w, int h)
  86 {
  87 }
  88
  89 static void
  90 draw(void)
  91 {
  92    vgSetfv(VG_CLEAR_COLOR, 4, bgCol);
  93    vgClear(0, 0, window_width(), window_height());
  94    vgSeti(VG_MATRIX_MODE, VG_MATRIX_IMAGE_USER_TO_SURFACE);
  95    vgLoadIdentity();
  96    vgTranslate(10, 10);
  97    vgDrawImage(dstImg);
  98    vgFlush();
  99 }
 100
 101
 102 int main(int argc, char **argv)
 103 {
 104    set_window_size(64, 64);
 105    return run(argc, argv, init, reshape,
 106               draw, 0);
 107 }