| #include <stdio.h> |
| #include <stdlib.h> |
| #include "utils.h" |
| |
| int |
| main (int argc, char **argv) |
| { |
| #define WIDTH 400 |
| #define HEIGHT 200 |
| |
| uint32_t *dest = malloc (WIDTH * HEIGHT * 4); |
| pixman_image_t *src_img; |
| pixman_image_t *dest_img; |
| int i, j, k, p; |
| |
| typedef struct |
| { |
| pixman_point_fixed_t p0; |
| pixman_point_fixed_t p1; |
| } point_pair_t; |
| |
| pixman_gradient_stop_t onestop[1] = |
| { |
| { pixman_int_to_fixed (1), { 0xffff, 0xeeee, 0xeeee, 0xeeee } }, |
| }; |
| |
| pixman_gradient_stop_t subsetstops[2] = |
| { |
| { pixman_int_to_fixed (1), { 0xffff, 0xeeee, 0xeeee, 0xeeee } }, |
| { pixman_int_to_fixed (1), { 0xffff, 0xeeee, 0xeeee, 0xeeee } }, |
| }; |
| |
| pixman_gradient_stop_t stops01[2] = |
| { |
| { pixman_int_to_fixed (0), { 0xffff, 0xeeee, 0xeeee, 0xeeee } }, |
| { pixman_int_to_fixed (1), { 0xffff, 0x1111, 0x1111, 0x1111 } } |
| }; |
| |
| point_pair_t point_pairs [] = |
| { { { pixman_double_to_fixed (0), 0 }, |
| { pixman_double_to_fixed (WIDTH / 8.), pixman_int_to_fixed (0) } }, |
| { { pixman_double_to_fixed (WIDTH / 2.0), pixman_double_to_fixed (HEIGHT / 2.0) }, |
| { pixman_double_to_fixed (WIDTH / 2.0), pixman_double_to_fixed (HEIGHT / 2.0) } } |
| }; |
| |
| pixman_transform_t transformations[] = { |
| { |
| { { pixman_double_to_fixed (2), pixman_double_to_fixed (0.5), pixman_double_to_fixed (-100), }, |
| { pixman_double_to_fixed (0), pixman_double_to_fixed (3), pixman_double_to_fixed (0), }, |
| { pixman_double_to_fixed (0), pixman_double_to_fixed (0.000), pixman_double_to_fixed (1.0) } |
| } |
| }, |
| { |
| { { pixman_double_to_fixed (1), pixman_double_to_fixed (0), pixman_double_to_fixed (0), }, |
| { pixman_double_to_fixed (0), pixman_double_to_fixed (1), pixman_double_to_fixed (0), }, |
| { pixman_double_to_fixed (0), pixman_double_to_fixed (0.000), pixman_double_to_fixed (1.0) } |
| } |
| }, |
| { |
| { { pixman_double_to_fixed (2), pixman_double_to_fixed (1), pixman_double_to_fixed (0), }, |
| { pixman_double_to_fixed (1), pixman_double_to_fixed (1), pixman_double_to_fixed (0), }, |
| { pixman_double_to_fixed (2), pixman_double_to_fixed (1.000), pixman_double_to_fixed (1.0) } |
| } |
| }, |
| { |
| { { pixman_double_to_fixed (2), pixman_double_to_fixed (1), pixman_double_to_fixed (0), }, |
| { pixman_double_to_fixed (1), pixman_double_to_fixed (1), pixman_double_to_fixed (0), }, |
| { pixman_double_to_fixed (0), pixman_double_to_fixed (0), pixman_double_to_fixed (0) } |
| } |
| }, |
| { |
| { { pixman_double_to_fixed (2), pixman_double_to_fixed (1), pixman_double_to_fixed (0), }, |
| { pixman_double_to_fixed (1), pixman_double_to_fixed (1), pixman_double_to_fixed (0), }, |
| { pixman_double_to_fixed (2), pixman_double_to_fixed (-1), pixman_double_to_fixed (0) } |
| } |
| }, |
| { |
| { { pixman_double_to_fixed (2), pixman_double_to_fixed (1), pixman_double_to_fixed (3), }, |
| { pixman_double_to_fixed (1), pixman_double_to_fixed (1), pixman_double_to_fixed (0), }, |
| { pixman_double_to_fixed (2), pixman_double_to_fixed (-1), pixman_double_to_fixed (0) } |
| } |
| }, |
| }; |
| |
| pixman_fixed_t r_inner; |
| pixman_fixed_t r_outer; |
| |
| enable_divbyzero_exceptions(); |
| |
| for (i = 0; i < WIDTH * HEIGHT; ++i) |
| dest[i] = 0x4f00004f; /* pale blue */ |
| |
| dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8, |
| WIDTH, HEIGHT, |
| dest, |
| WIDTH * 4); |
| |
| r_inner = 0; |
| r_outer = pixman_double_to_fixed (50.0); |
| |
| for (i = 0; i < 3; ++i) |
| { |
| pixman_gradient_stop_t *stops; |
| int num_stops; |
| |
| if (i == 0) |
| { |
| stops = onestop; |
| num_stops = ARRAY_LENGTH (onestop); |
| } |
| else if (i == 1) |
| { |
| stops = subsetstops; |
| num_stops = ARRAY_LENGTH (subsetstops); |
| } |
| else |
| { |
| stops = stops01; |
| num_stops = ARRAY_LENGTH (stops01); |
| } |
| |
| for (j = 0; j < 3; ++j) |
| { |
| for (p = 0; p < ARRAY_LENGTH (point_pairs); ++p) |
| { |
| point_pair_t *pair = &(point_pairs[p]); |
| |
| if (j == 0) |
| src_img = pixman_image_create_conical_gradient (&(pair->p0), r_inner, |
| stops, num_stops); |
| else if (j == 1) |
| src_img = pixman_image_create_radial_gradient (&(pair->p0), &(pair->p1), |
| r_inner, r_outer, |
| stops, num_stops); |
| else |
| src_img = pixman_image_create_linear_gradient (&(pair->p0), &(pair->p1), |
| stops, num_stops); |
| |
| for (k = 0; k < ARRAY_LENGTH (transformations); ++k) |
| { |
| pixman_image_set_transform (src_img, &transformations[k]); |
| |
| pixman_image_set_repeat (src_img, PIXMAN_REPEAT_NONE); |
| pixman_image_composite (PIXMAN_OP_OVER, src_img, NULL, dest_img, |
| 0, 0, 0, 0, 0, 0, 10 * WIDTH, HEIGHT); |
| } |
| |
| pixman_image_unref (src_img); |
| } |
| |
| } |
| } |
| |
| pixman_image_unref (dest_img); |
| free (dest); |
| |
| return 0; |
| } |