diff options
author | Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
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committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/pixman/demos/checkerboard.c | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/pixman/demos/checkerboard.c')
-rw-r--r-- | qemu/pixman/demos/checkerboard.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/qemu/pixman/demos/checkerboard.c b/qemu/pixman/demos/checkerboard.c new file mode 100644 index 000000000..449fedb37 --- /dev/null +++ b/qemu/pixman/demos/checkerboard.c @@ -0,0 +1,71 @@ +#include <stdio.h> +#include <stdlib.h> +#include "pixman.h" +#include "gtk-utils.h" + +int +main (int argc, char **argv) +{ +#define WIDTH 400 +#define HEIGHT 400 +#define TILE_SIZE 25 + + pixman_image_t *checkerboard; + pixman_image_t *destination; +#define D2F(d) (pixman_double_to_fixed(d)) + pixman_transform_t trans = { { + { D2F (-1.96830), D2F (-1.82250), D2F (512.12250)}, + { D2F (0.00000), D2F (-7.29000), D2F (1458.00000)}, + { D2F (0.00000), D2F (-0.00911), D2F (0.59231)}, + }}; + int i, j; + + checkerboard = pixman_image_create_bits (PIXMAN_a8r8g8b8, + WIDTH, HEIGHT, + NULL, 0); + + destination = pixman_image_create_bits (PIXMAN_a8r8g8b8, + WIDTH, HEIGHT, + NULL, 0); + + for (i = 0; i < HEIGHT / TILE_SIZE; ++i) + { + for (j = 0; j < WIDTH / TILE_SIZE; ++j) + { + double u = (double)(j + 1) / (WIDTH / TILE_SIZE); + double v = (double)(i + 1) / (HEIGHT / TILE_SIZE); + pixman_color_t black = { 0, 0, 0, 0xffff }; + pixman_color_t white = { + v * 0xffff, + u * 0xffff, + (1 - (double)u) * 0xffff, + 0xffff }; + pixman_color_t *c; + pixman_image_t *fill; + + if ((j & 1) != (i & 1)) + c = &black; + else + c = &white; + + fill = pixman_image_create_solid_fill (c); + + pixman_image_composite (PIXMAN_OP_SRC, fill, NULL, checkerboard, + 0, 0, 0, 0, j * TILE_SIZE, i * TILE_SIZE, + TILE_SIZE, TILE_SIZE); + } + } + + pixman_image_set_transform (checkerboard, &trans); + pixman_image_set_filter (checkerboard, PIXMAN_FILTER_BEST, NULL, 0); + pixman_image_set_repeat (checkerboard, PIXMAN_REPEAT_NONE); + + pixman_image_composite (PIXMAN_OP_SRC, + checkerboard, NULL, destination, + 0, 0, 0, 0, 0, 0, + WIDTH, HEIGHT); + + show_image (destination); + + return 0; +} |