From 0328076efb5ff6e62152c09e38d0d11f7931d07b Mon Sep 17 00:00:00 2001 From: marha Date: Mon, 10 Dec 2012 08:33:13 +0100 Subject: fontconfig libX11 mesa pixman git update 10 dec 2012 libX11 9833489e6c3829a1e835bc0a11f028fc180809e4 mesa 17f5dc57306b8f5079304701e455bf4b927d3cae pixman 8ca4e144724ba2041bc5ef077ccf6d24e7cf4d1f fontconfig 608c5b590bd3428dfcd30f3d68ee8b7131e2f019 --- pixman/demos/conical-test.c | 134 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 134 insertions(+) create mode 100644 pixman/demos/conical-test.c (limited to 'pixman/demos/conical-test.c') diff --git a/pixman/demos/conical-test.c b/pixman/demos/conical-test.c new file mode 100644 index 000000000..1e08e42f7 --- /dev/null +++ b/pixman/demos/conical-test.c @@ -0,0 +1,134 @@ +#include "../test/utils.h" +#include "gtk-utils.h" + +#define SIZE 128 +#define GRADIENTS_PER_ROW 7 +#define NUM_ROWS ((NUM_GRADIENTS + GRADIENTS_PER_ROW - 1) / GRADIENTS_PER_ROW) +#define WIDTH (SIZE * GRADIENTS_PER_ROW) +#define HEIGHT (SIZE * NUM_ROWS) +#define NUM_GRADIENTS 35 + +#define double_to_color(x) \ + (((uint32_t) ((x)*65536)) - (((uint32_t) ((x)*65536)) >> 16)) + +#define PIXMAN_STOP(offset,r,g,b,a) \ + { pixman_double_to_fixed (offset), \ + { \ + double_to_color (r), \ + double_to_color (g), \ + double_to_color (b), \ + double_to_color (a) \ + } \ + } + + +static const pixman_gradient_stop_t stops[] = { + PIXMAN_STOP (0.25, 1, 0, 0, 0.7), + PIXMAN_STOP (0.5, 1, 1, 0, 0.7), + PIXMAN_STOP (0.75, 0, 1, 0, 0.7), + PIXMAN_STOP (1.0, 0, 0, 1, 0.7) +}; + +#define NUM_STOPS (sizeof (stops) / sizeof (stops[0])) + +static pixman_image_t * +create_conical (int index) +{ + pixman_point_fixed_t c; + double angle; + + c.x = pixman_double_to_fixed (0); + c.y = pixman_double_to_fixed (0); + + angle = (0.5 / NUM_GRADIENTS + index / (double)NUM_GRADIENTS) * 720 - 180; + + return pixman_image_create_conical_gradient ( + &c, pixman_double_to_fixed (angle), stops, NUM_STOPS); +} + +#define CHECK_SIZE 25 + +static void +fill_checkerboard (pixman_image_t *image, int width, int height) +{ +#define C1 0xaaaa +#define C2 0x8888 + + pixman_color_t check1 = { C1, C1, C1, 0xffff }; + pixman_color_t check2 = { C2, C2, C2, 0xffff }; + pixman_image_t *c1, *c2; + int i, j; + + c1 = pixman_image_create_solid_fill (&check1); + c2 = pixman_image_create_solid_fill (&check2); + + for (j = 0; j < height; j += CHECK_SIZE) + { + for (i = 0; i < width; i += CHECK_SIZE) + { + pixman_image_t *src; + + if ((((i / CHECK_SIZE) ^ (j / CHECK_SIZE)) & 1) == 0) + src = c1; + else + src = c2; + + pixman_image_composite32 (PIXMAN_OP_SRC, src, NULL, image, + 0, 0, 0, 0, i, j, + CHECK_SIZE, CHECK_SIZE); + } + } +} + +int +main (int argc, char **argv) +{ + pixman_transform_t transform; + pixman_image_t *src_img, *dest_img; + int i; + + enable_divbyzero_exceptions (); + + dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8, + WIDTH, HEIGHT, + NULL, 0); + + fill_checkerboard (dest_img, WIDTH, HEIGHT); + + pixman_transform_init_identity (&transform); + + pixman_transform_translate (NULL, &transform, + pixman_double_to_fixed (0.5), + pixman_double_to_fixed (0.5)); + + pixman_transform_scale (NULL, &transform, + pixman_double_to_fixed (SIZE), + pixman_double_to_fixed (SIZE)); + pixman_transform_translate (NULL, &transform, + pixman_double_to_fixed (0.5), + pixman_double_to_fixed (0.5)); + + for (i = 0; i < NUM_GRADIENTS; i++) + { + int column = i % GRADIENTS_PER_ROW; + int row = i / GRADIENTS_PER_ROW; + + src_img = create_conical (i); + pixman_image_set_repeat (src_img, PIXMAN_REPEAT_NORMAL); + + pixman_image_set_transform (src_img, &transform); + + pixman_image_composite32 ( + PIXMAN_OP_OVER, src_img, NULL,dest_img, + 0, 0, 0, 0, column * SIZE, row * SIZE, + SIZE, SIZE); + + pixman_image_unref (src_img); + } + + show_image (dest_img); + + pixman_image_unref (dest_img); + + return 0; +} -- cgit v1.2.3