#include #include #include #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_path_fill (path, test_fb, pipeline); 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 (test_ctx); 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 (test_ctx); 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 (test_ctx); 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 (test_ctx); 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 (test_ctx); 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"); }