1 files changed, 215 insertions, 0 deletions
diff --git a/cogl/tests/conform/test-path.c b/cogl/tests/conform/test-path.c
new file mode 100644
index 000000000..11f7f1583
--- /dev/null
+++ b/cogl/tests/conform/test-path.c
@@ -0,0 +1,215 @@
+#define COGL_ENABLE_EXPERIMENTAL_2_0_API
+#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");
+}
+