2a8f0c2801
Use the new API where state (framebuffer, pipeline) is always passed as parameters, instead of using the implicit material and framebuffer stack. https://gitlab.gnome.org/GNOME/mutter/merge_requests/935
213 lines
7.2 KiB
C
213 lines
7.2 KiB
C
#include <cogl/cogl.h>
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#include <cogl-path/cogl-path.h>
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#include <string.h>
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#include "test-declarations.h"
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#include "test-utils.h"
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#define BLOCK_SIZE 16
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/* Number of pixels at the border of a block quadrant to skip when verifying */
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#define TEST_INSET 1
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typedef struct _TestState
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{
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int dummy;
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} TestState;
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static void
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draw_path_at (CoglPath *path, CoglPipeline *pipeline, int x, int y)
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{
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cogl_framebuffer_push_matrix (test_fb);
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cogl_framebuffer_translate (test_fb, x * BLOCK_SIZE, y * BLOCK_SIZE, 0.0f);
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cogl_framebuffer_fill_path (test_fb, pipeline, path);
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cogl_framebuffer_pop_matrix (test_fb);
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}
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static void
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check_block (int block_x, int block_y, int block_mask)
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{
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uint32_t data[BLOCK_SIZE * BLOCK_SIZE];
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int qx, qy;
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/* Block mask represents which quarters of the block should be
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filled. The bits from 0->3 represent the top left, top right,
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bottom left and bottom right respectively */
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cogl_framebuffer_read_pixels (test_fb,
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block_x * BLOCK_SIZE,
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block_y * BLOCK_SIZE,
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BLOCK_SIZE, BLOCK_SIZE,
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COGL_PIXEL_FORMAT_RGBA_8888_PRE,
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(uint8_t *)data);
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for (qy = 0; qy < 2; qy++)
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for (qx = 0; qx < 2; qx++)
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{
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int bit = qx | (qy << 1);
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const char *intended_pixel = ((block_mask & (1 << bit)) ? "#ffffff" : "#000000");
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int x, y;
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for (x = 0; x < BLOCK_SIZE / 2 - TEST_INSET * 2; x++)
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for (y = 0; y < BLOCK_SIZE / 2 - TEST_INSET * 2; y++)
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{
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const uint32_t *p = data + (qx * BLOCK_SIZE / 2 +
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qy * BLOCK_SIZE * BLOCK_SIZE / 2 +
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(x + TEST_INSET) +
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(y + TEST_INSET) * BLOCK_SIZE);
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char *screen_pixel = g_strdup_printf ("#%06x", GUINT32_FROM_BE (*p) >> 8);
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g_assert_cmpstr (screen_pixel, ==, intended_pixel);
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g_free (screen_pixel);
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}
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}
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}
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static void
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paint (TestState *state)
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{
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CoglPath *path_a, *path_b, *path_c;
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CoglPipeline *white = cogl_pipeline_new (test_ctx);
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cogl_pipeline_set_color4f (white, 1, 1, 1, 1);
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/* Create a path filling just a quarter of a block. It will use two
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rectangles so that we have a sub path in the path */
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path_a = cogl_path_new ();
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cogl_path_rectangle (path_a,
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BLOCK_SIZE * 3 / 4, BLOCK_SIZE / 2,
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BLOCK_SIZE, BLOCK_SIZE);
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cogl_path_rectangle (path_a,
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BLOCK_SIZE / 2, BLOCK_SIZE / 2,
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BLOCK_SIZE * 3 / 4, BLOCK_SIZE);
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draw_path_at (path_a, white, 0, 0);
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/* Create another path filling the whole block */
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path_b = cogl_path_new ();
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cogl_path_rectangle (path_b, 0, 0, BLOCK_SIZE, BLOCK_SIZE);
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draw_path_at (path_b, white, 1, 0);
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/* Draw the first path again */
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draw_path_at (path_a, white, 2, 0);
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/* Draw a copy of path a */
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path_c = cogl_path_copy (path_a);
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draw_path_at (path_c, white, 3, 0);
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/* Add another rectangle to path a. We'll use line_to's instead of
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cogl_rectangle so that we don't create another sub-path because
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that is more likely to break the copy */
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cogl_path_line_to (path_a, 0, BLOCK_SIZE / 2);
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cogl_path_line_to (path_a, 0, 0);
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cogl_path_line_to (path_a, BLOCK_SIZE / 2, 0);
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cogl_path_line_to (path_a, BLOCK_SIZE / 2, BLOCK_SIZE / 2);
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draw_path_at (path_a, white, 4, 0);
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/* Draw the copy again. It should not have changed */
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draw_path_at (path_c, white, 5, 0);
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/* Add another rectangle to path c. It will be added in two halves,
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one as an extension of the previous path and the other as a new
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sub path */
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cogl_path_line_to (path_c, BLOCK_SIZE / 2, 0);
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cogl_path_line_to (path_c, BLOCK_SIZE * 3 / 4, 0);
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cogl_path_line_to (path_c, BLOCK_SIZE * 3 / 4, BLOCK_SIZE / 2);
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cogl_path_line_to (path_c, BLOCK_SIZE / 2, BLOCK_SIZE / 2);
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cogl_path_rectangle (path_c,
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BLOCK_SIZE * 3 / 4, 0, BLOCK_SIZE, BLOCK_SIZE / 2);
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draw_path_at (path_c, white, 6, 0);
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/* Draw the original path again. It should not have changed */
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draw_path_at (path_a, white, 7, 0);
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cogl_object_unref (path_a);
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cogl_object_unref (path_b);
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cogl_object_unref (path_c);
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/* Draw a self-intersecting path. The part that intersects should be
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inverted */
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path_a = cogl_path_new ();
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cogl_path_rectangle (path_a, 0, 0, BLOCK_SIZE, BLOCK_SIZE);
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cogl_path_line_to (path_a, 0, BLOCK_SIZE / 2);
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cogl_path_line_to (path_a, BLOCK_SIZE / 2, BLOCK_SIZE / 2);
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cogl_path_line_to (path_a, BLOCK_SIZE / 2, 0);
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cogl_path_close (path_a);
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draw_path_at (path_a, white, 8, 0);
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cogl_object_unref (path_a);
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/* Draw two sub paths. Where the paths intersect it should be
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inverted */
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path_a = cogl_path_new ();
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cogl_path_rectangle (path_a, 0, 0, BLOCK_SIZE, BLOCK_SIZE);
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cogl_path_rectangle (path_a,
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BLOCK_SIZE / 2, BLOCK_SIZE / 2, BLOCK_SIZE, BLOCK_SIZE);
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draw_path_at (path_a, white, 9, 0);
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cogl_object_unref (path_a);
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/* Draw a clockwise outer path */
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path_a = cogl_path_new ();
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cogl_path_move_to (path_a, 0, 0);
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cogl_path_line_to (path_a, BLOCK_SIZE, 0);
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cogl_path_line_to (path_a, BLOCK_SIZE, BLOCK_SIZE);
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cogl_path_line_to (path_a, 0, BLOCK_SIZE);
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cogl_path_close (path_a);
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/* Add a clockwise sub path in the upper left quadrant */
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cogl_path_move_to (path_a, 0, 0);
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cogl_path_line_to (path_a, BLOCK_SIZE / 2, 0);
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cogl_path_line_to (path_a, BLOCK_SIZE / 2, BLOCK_SIZE / 2);
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cogl_path_line_to (path_a, 0, BLOCK_SIZE / 2);
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cogl_path_close (path_a);
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/* Add a counter-clockwise sub path in the upper right quadrant */
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cogl_path_move_to (path_a, BLOCK_SIZE / 2, 0);
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cogl_path_line_to (path_a, BLOCK_SIZE / 2, BLOCK_SIZE / 2);
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cogl_path_line_to (path_a, BLOCK_SIZE, BLOCK_SIZE / 2);
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cogl_path_line_to (path_a, BLOCK_SIZE, 0);
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cogl_path_close (path_a);
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/* Retain the path for the next test */
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draw_path_at (path_a, white, 10, 0);
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/* Draw the same path again with the other fill rule */
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cogl_path_set_fill_rule (path_a, COGL_PATH_FILL_RULE_NON_ZERO);
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draw_path_at (path_a, white, 11, 0);
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cogl_object_unref (path_a);
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}
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static void
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validate_result (void)
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{
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check_block (0, 0, 0x8 /* bottom right */);
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check_block (1, 0, 0xf /* all of them */);
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check_block (2, 0, 0x8 /* bottom right */);
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check_block (3, 0, 0x8 /* bottom right */);
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check_block (4, 0, 0x9 /* top left and bottom right */);
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check_block (5, 0, 0x8 /* bottom right */);
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check_block (6, 0, 0xa /* bottom right and top right */);
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check_block (7, 0, 0x9 /* top_left and bottom right */);
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check_block (8, 0, 0xe /* all but top left */);
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check_block (9, 0, 0x7 /* all but bottom right */);
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check_block (10, 0, 0xc /* bottom two */);
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check_block (11, 0, 0xd /* all but top right */);
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}
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void
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test_path (void)
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{
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TestState state;
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cogl_framebuffer_orthographic (test_fb,
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0, 0,
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cogl_framebuffer_get_width (test_fb),
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cogl_framebuffer_get_height (test_fb),
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-1,
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100);
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paint (&state);
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validate_result ();
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if (cogl_test_verbose ())
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g_print ("OK\n");
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}
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