IABSD.fr/xenocara/lib/pixman/demos/tri-test.c

Branch : - branch - master - tag -

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  Commit

• Author : matthieu
  Date : 2011-07-24 13:05:47
  Hash : 0def8ce1
  Message : Update to pixman 0.22.2. 0.22.0 was tested by many. 0.22.2 only add a few bug fixes. Note that on amd64 a recent ld.so is needed to avoid random bus errors.

• lib/pixman/demos/tri-test.c

• #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include "../test/utils.h"
  #include "gtk-utils.h"
  
  int
  main (int argc, char **argv)
  {
  #define WIDTH 200
  #define HEIGHT 200
  
  #define POINT(x,y)							\
      { pixman_double_to_fixed ((x)), pixman_double_to_fixed ((y)) }
      
      pixman_image_t *src_img, *dest_img;
      pixman_triangle_t tris[4] =
      {
  	{ POINT (100, 100), POINT (10, 50), POINT (110, 10) },
  	{ POINT (100, 100), POINT (150, 10), POINT (200, 50) },
  	{ POINT (100, 100), POINT (10, 170), POINT (90, 175) },
  	{ POINT (100, 100), POINT (170, 150), POINT (120, 190) },
      };
      pixman_color_t color = { 0x4444, 0x4444, 0xffff, 0xffff };
      uint32_t *bits = malloc (WIDTH * HEIGHT * 4);
      int i;
  
      for (i = 0; i < WIDTH * HEIGHT; ++i)
  	bits[i] = (i / HEIGHT) * 0x01010000;
      
      src_img = pixman_image_create_solid_fill (&color);
      dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8, WIDTH, HEIGHT, bits, WIDTH * 4);
      
      pixman_composite_triangles (PIXMAN_OP_ATOP_REVERSE,
  				src_img,
  				dest_img,
  				PIXMAN_a8,
  				200, 200,
  				-5, 5,
  				ARRAY_LENGTH (tris), tris);
      show_image (dest_img);
      
      pixman_image_unref (src_img);
      pixman_image_unref (dest_img);
      free (bits);
      
      return 0;
  }