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demos/linear-gradient.c
50 строк
1 KB
Emanuel Schmidt
Separate meson build options for demos and tests
08 фев 2023, 22:56
08 фев 2023, 22:56
eb998d7
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#include "utils.h" #include "gtk-utils.h" #define WIDTH 1024 #define HEIGHT 640 int main (int argc, char **argv) { pixman_image_t *src_img, *dest_img; pixman_gradient_stop_t stops[] = { { 0x00000, { 0x0000, 0x0000, 0x4444, 0xdddd } }, { 0x10000, { 0xeeee, 0xeeee, 0x8888, 0xdddd } }, #if 0 /* These colors make it very obvious that dithering * is useful even for 8-bit gradients */ { 0x00000, { 0x6666, 0x3333, 0x3333, 0xffff } }, { 0x10000, { 0x3333, 0x6666, 0x6666, 0xffff } }, #endif }; pixman_point_fixed_t p1, p2; enable_divbyzero_exceptions (); dest_img = pixman_image_create_bits (PIXMAN_x8r8g8b8, WIDTH, HEIGHT, NULL, 0); p1.x = p1.y = 0x0000; p2.x = WIDTH << 16; p2.y = HEIGHT << 16; src_img = pixman_image_create_linear_gradient (&p1, &p2, stops, ARRAY_LENGTH (stops)); pixman_image_composite32 (PIXMAN_OP_OVER, src_img, NULL, dest_img, 0, 0, 0, 0, 0, 0, WIDTH, HEIGHT); show_image (dest_img); pixman_image_unref (dest_img); return 0; }