mutter/cogl/tests/conform/test-path.c
Jonas Ådahl d62d780a95 Remove cogl-1.0 vs cogl-2.0 vs cogl experimental API split
Mutter (and libmutter users) are the only users of this version of
cogl, and will more or less only use the cogl-1.0, cogl-2.0 and cogl
experimental API variants, and having the possibility of having
different API versions of the same API depending on what file includes
it is error prone and confusing. Lets just remove the possibility of
having different versions of the same API.

https://bugzilla.gnome.org/show_bug.cgi?id=768977
2016-07-20 14:23:48 +08:00

215 lines
7.2 KiB
C

#include <cogl/cogl.h>
#include <cogl-path/cogl-path.h>
#include <string.h>
#include "test-utils.h"
#define BLOCK_SIZE 16
/* Number of pixels at the border of a block quadrant to skip when verifying */
#define TEST_INSET 1
typedef struct _TestState
{
int dummy;
} TestState;
static void
draw_path_at (CoglPath *path, CoglPipeline *pipeline, int x, int y)
{
cogl_framebuffer_push_matrix (test_fb);
cogl_framebuffer_translate (test_fb, x * BLOCK_SIZE, y * BLOCK_SIZE, 0.0f);
cogl_set_framebuffer (test_fb);
cogl_set_source (pipeline);
cogl_path_fill (path);
cogl_framebuffer_pop_matrix (test_fb);
}
static void
check_block (int block_x, int block_y, int block_mask)
{
uint32_t data[BLOCK_SIZE * BLOCK_SIZE];
int qx, qy;
/* Block mask represents which quarters of the block should be
filled. The bits from 0->3 represent the top left, top right,
bottom left and bottom right respectively */
cogl_framebuffer_read_pixels (test_fb,
block_x * BLOCK_SIZE,
block_y * BLOCK_SIZE,
BLOCK_SIZE, BLOCK_SIZE,
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
(uint8_t *)data);
for (qy = 0; qy < 2; qy++)
for (qx = 0; qx < 2; qx++)
{
int bit = qx | (qy << 1);
const char *intended_pixel = ((block_mask & (1 << bit)) ? "#ffffff" : "#000000");
int x, y;
for (x = 0; x < BLOCK_SIZE / 2 - TEST_INSET * 2; x++)
for (y = 0; y < BLOCK_SIZE / 2 - TEST_INSET * 2; y++)
{
const uint32_t *p = data + (qx * BLOCK_SIZE / 2 +
qy * BLOCK_SIZE * BLOCK_SIZE / 2 +
(x + TEST_INSET) +
(y + TEST_INSET) * BLOCK_SIZE);
char *screen_pixel = g_strdup_printf ("#%06x", GUINT32_FROM_BE (*p) >> 8);
g_assert_cmpstr (screen_pixel, ==, intended_pixel);
g_free (screen_pixel);
}
}
}
static void
paint (TestState *state)
{
CoglPath *path_a, *path_b, *path_c;
CoglPipeline *white = cogl_pipeline_new (test_ctx);
cogl_pipeline_set_color4f (white, 1, 1, 1, 1);
/* Create a path filling just a quarter of a block. It will use two
rectangles so that we have a sub path in the path */
path_a = cogl_path_new ();
cogl_path_rectangle (path_a,
BLOCK_SIZE * 3 / 4, BLOCK_SIZE / 2,
BLOCK_SIZE, BLOCK_SIZE);
cogl_path_rectangle (path_a,
BLOCK_SIZE / 2, BLOCK_SIZE / 2,
BLOCK_SIZE * 3 / 4, BLOCK_SIZE);
draw_path_at (path_a, white, 0, 0);
/* Create another path filling the whole block */
path_b = cogl_path_new ();
cogl_path_rectangle (path_b, 0, 0, BLOCK_SIZE, BLOCK_SIZE);
draw_path_at (path_b, white, 1, 0);
/* Draw the first path again */
draw_path_at (path_a, white, 2, 0);
/* Draw a copy of path a */
path_c = cogl_path_copy (path_a);
draw_path_at (path_c, white, 3, 0);
/* Add another rectangle to path a. We'll use line_to's instead of
cogl_rectangle so that we don't create another sub-path because
that is more likely to break the copy */
cogl_path_line_to (path_a, 0, BLOCK_SIZE / 2);
cogl_path_line_to (path_a, 0, 0);
cogl_path_line_to (path_a, BLOCK_SIZE / 2, 0);
cogl_path_line_to (path_a, BLOCK_SIZE / 2, BLOCK_SIZE / 2);
draw_path_at (path_a, white, 4, 0);
/* Draw the copy again. It should not have changed */
draw_path_at (path_c, white, 5, 0);
/* Add another rectangle to path c. It will be added in two halves,
one as an extension of the previous path and the other as a new
sub path */
cogl_path_line_to (path_c, BLOCK_SIZE / 2, 0);
cogl_path_line_to (path_c, BLOCK_SIZE * 3 / 4, 0);
cogl_path_line_to (path_c, BLOCK_SIZE * 3 / 4, BLOCK_SIZE / 2);
cogl_path_line_to (path_c, BLOCK_SIZE / 2, BLOCK_SIZE / 2);
cogl_path_rectangle (path_c,
BLOCK_SIZE * 3 / 4, 0, BLOCK_SIZE, BLOCK_SIZE / 2);
draw_path_at (path_c, white, 6, 0);
/* Draw the original path again. It should not have changed */
draw_path_at (path_a, white, 7, 0);
cogl_object_unref (path_a);
cogl_object_unref (path_b);
cogl_object_unref (path_c);
/* Draw a self-intersecting path. The part that intersects should be
inverted */
path_a = cogl_path_new ();
cogl_path_rectangle (path_a, 0, 0, BLOCK_SIZE, BLOCK_SIZE);
cogl_path_line_to (path_a, 0, BLOCK_SIZE / 2);
cogl_path_line_to (path_a, BLOCK_SIZE / 2, BLOCK_SIZE / 2);
cogl_path_line_to (path_a, BLOCK_SIZE / 2, 0);
cogl_path_close (path_a);
draw_path_at (path_a, white, 8, 0);
cogl_object_unref (path_a);
/* Draw two sub paths. Where the paths intersect it should be
inverted */
path_a = cogl_path_new ();
cogl_path_rectangle (path_a, 0, 0, BLOCK_SIZE, BLOCK_SIZE);
cogl_path_rectangle (path_a,
BLOCK_SIZE / 2, BLOCK_SIZE / 2, BLOCK_SIZE, BLOCK_SIZE);
draw_path_at (path_a, white, 9, 0);
cogl_object_unref (path_a);
/* Draw a clockwise outer path */
path_a = cogl_path_new ();
cogl_path_move_to (path_a, 0, 0);
cogl_path_line_to (path_a, BLOCK_SIZE, 0);
cogl_path_line_to (path_a, BLOCK_SIZE, BLOCK_SIZE);
cogl_path_line_to (path_a, 0, BLOCK_SIZE);
cogl_path_close (path_a);
/* Add a clockwise sub path in the upper left quadrant */
cogl_path_move_to (path_a, 0, 0);
cogl_path_line_to (path_a, BLOCK_SIZE / 2, 0);
cogl_path_line_to (path_a, BLOCK_SIZE / 2, BLOCK_SIZE / 2);
cogl_path_line_to (path_a, 0, BLOCK_SIZE / 2);
cogl_path_close (path_a);
/* Add a counter-clockwise sub path in the upper right quadrant */
cogl_path_move_to (path_a, BLOCK_SIZE / 2, 0);
cogl_path_line_to (path_a, BLOCK_SIZE / 2, BLOCK_SIZE / 2);
cogl_path_line_to (path_a, BLOCK_SIZE, BLOCK_SIZE / 2);
cogl_path_line_to (path_a, BLOCK_SIZE, 0);
cogl_path_close (path_a);
/* Retain the path for the next test */
draw_path_at (path_a, white, 10, 0);
/* Draw the same path again with the other fill rule */
cogl_path_set_fill_rule (path_a, COGL_PATH_FILL_RULE_NON_ZERO);
draw_path_at (path_a, white, 11, 0);
cogl_object_unref (path_a);
}
static void
validate_result ()
{
check_block (0, 0, 0x8 /* bottom right */);
check_block (1, 0, 0xf /* all of them */);
check_block (2, 0, 0x8 /* bottom right */);
check_block (3, 0, 0x8 /* bottom right */);
check_block (4, 0, 0x9 /* top left and bottom right */);
check_block (5, 0, 0x8 /* bottom right */);
check_block (6, 0, 0xa /* bottom right and top right */);
check_block (7, 0, 0x9 /* top_left and bottom right */);
check_block (8, 0, 0xe /* all but top left */);
check_block (9, 0, 0x7 /* all but bottom right */);
check_block (10, 0, 0xc /* bottom two */);
check_block (11, 0, 0xd /* all but top right */);
}
void
test_path (void)
{
TestState state;
cogl_framebuffer_orthographic (test_fb,
0, 0,
cogl_framebuffer_get_width (test_fb),
cogl_framebuffer_get_height (test_fb),
-1,
100);
paint (&state);
validate_result ();
if (cogl_test_verbose ())
g_print ("OK\n");
}