diff options
Diffstat (limited to 'pixman/test/utils.c')
| -rw-r--r-- | pixman/test/utils.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/pixman/test/utils.c b/pixman/test/utils.c index 66c8dcb89..08eaabbf6 100644 --- a/pixman/test/utils.c +++ b/pixman/test/utils.c @@ -548,6 +548,60 @@ write_png (pixman_image_t *image, const char *filename) #endif +static void +color8_to_color16 (uint32_t color8, pixman_color_t *color16) +{ + color16->alpha = ((color8 & 0xff000000) >> 24); + color16->red = ((color8 & 0x00ff0000) >> 16); + color16->green = ((color8 & 0x0000ff00) >> 8); + color16->blue = ((color8 & 0x000000ff) >> 0); + + color16->alpha |= color16->alpha << 8; + color16->red |= color16->red << 8; + color16->blue |= color16->blue << 8; + color16->green |= color16->green << 8; +} + +void +draw_checkerboard (pixman_image_t *image, + int check_size, + uint32_t color1, uint32_t color2) +{ + pixman_color_t check1, check2; + pixman_image_t *c1, *c2; + int n_checks_x, n_checks_y; + int i, j; + + color8_to_color16 (color1, &check1); + color8_to_color16 (color2, &check2); + + c1 = pixman_image_create_solid_fill (&check1); + c2 = pixman_image_create_solid_fill (&check2); + + n_checks_x = ( + pixman_image_get_width (image) + check_size - 1) / check_size; + n_checks_y = ( + pixman_image_get_height (image) + check_size - 1) / check_size; + + for (j = 0; j < n_checks_y; j++) + { + for (i = 0; i < n_checks_x; i++) + { + pixman_image_t *src; + + if (((i ^ j) & 1)) + src = c1; + else + src = c2; + + pixman_image_composite32 (PIXMAN_OP_SRC, src, NULL, image, + 0, 0, 0, 0, + i * check_size, j * check_size, + check_size, check_size); + } + } +} + /* * A function, which can be used as a core part of the test programs, * intended to detect various problems with the help of fuzzing input |