Blame demos/linear-gradient.c

Packit 030a23
#include "../test/utils.h"
Packit 030a23
#include "gtk-utils.h"
Packit 030a23
Packit 030a23
#define WIDTH 1024
Packit 030a23
#define HEIGHT 640
Packit 030a23
Packit 030a23
int
Packit 030a23
main (int argc, char **argv)
Packit 030a23
{
Packit 030a23
    pixman_image_t *src_img, *dest_img;
Packit 030a23
    pixman_gradient_stop_t stops[] = {
Packit 030a23
        { 0x00000, { 0x0000, 0x0000, 0x4444, 0xdddd } },
Packit 030a23
        { 0x10000, { 0xeeee, 0xeeee, 0x8888, 0xdddd } },
Packit 030a23
#if 0
Packit 030a23
        /* These colors make it very obvious that dithering
Packit 030a23
         * is useful even for 8-bit gradients
Packit 030a23
         */
Packit 030a23
	{ 0x00000, { 0x6666, 0x3333, 0x3333, 0xffff } },
Packit 030a23
	{ 0x10000, { 0x3333, 0x6666, 0x6666, 0xffff } },
Packit 030a23
#endif
Packit 030a23
    };
Packit 030a23
    pixman_point_fixed_t p1, p2;
Packit 030a23
Packit 030a23
    enable_divbyzero_exceptions ();
Packit 030a23
Packit 030a23
    dest_img = pixman_image_create_bits (PIXMAN_x8r8g8b8,
Packit 030a23
					 WIDTH, HEIGHT,
Packit 030a23
					 NULL, 0);
Packit 030a23
Packit 030a23
    p1.x = p1.y = 0x0000;
Packit 030a23
    p2.x = WIDTH << 16;
Packit 030a23
    p2.y = HEIGHT << 16;
Packit 030a23
    
Packit 030a23
    src_img = pixman_image_create_linear_gradient (&p1, &p2, stops, ARRAY_LENGTH (stops));
Packit 030a23
Packit 030a23
    pixman_image_composite32 (PIXMAN_OP_OVER,
Packit 030a23
			      src_img,
Packit 030a23
			      NULL,
Packit 030a23
			      dest_img,
Packit 030a23
			      0, 0,
Packit 030a23
			      0, 0,
Packit 030a23
			      0, 0,
Packit 030a23
			      WIDTH, HEIGHT);
Packit 030a23
Packit 030a23
    show_image (dest_img);
Packit 030a23
Packit 030a23
    pixman_image_unref (dest_img);
Packit 030a23
Packit 030a23
    return 0;
Packit 030a23
}