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#include <clutter/clutter.h>
#include <cogl/cogl.h>
#include "test-conform-common.h"
#define RED 0
#define GREEN 1
#define BLUE 2
#define FRAMEBUFFER_WIDTH 640
#define FRAMEBUFFER_HEIGHT 480
static const ClutterColor stage_color = { 0x0, 0x0, 0x0, 0xff };
static void
on_paint (ClutterActor *actor, void *state)
{
float saved_viewport[4];
CoglMatrix saved_projection;
CoglMatrix projection;
CoglMatrix modelview;
guchar *data;
CoglHandle tex;
CoglHandle offscreen;
uint32_t *pixels;
uint8_t *pixelsc;
/* Save the Clutter viewport/matrices and load identity matrices */
cogl_get_viewport (saved_viewport);
cogl_get_projection_matrix (&saved_projection);
cogl_push_matrix ();
cogl_matrix_init_identity (&projection);
cogl_matrix_init_identity (&modelview);
cogl_set_projection_matrix (&projection);
cogl_set_modelview_matrix (&modelview);
/* All offscreen rendering is done upside down so the first thing we
* verify is reading back grid of colors from a CoglOffscreen framebuffer
*/
data = g_malloc (FRAMEBUFFER_WIDTH * 4 * FRAMEBUFFER_HEIGHT);
tex = test_utils_texture_new_from_data (FRAMEBUFFER_WIDTH, FRAMEBUFFER_HEIGHT,
TEST_UTILS_TEXTURE_NO_SLICING,
COGL_PIXEL_FORMAT_RGBA_8888, /* data fmt */
COGL_PIXEL_FORMAT_ANY, /* internal fmt */
FRAMEBUFFER_WIDTH * 4, /* rowstride */
data);
g_free (data);
offscreen = cogl_offscreen_new_with_texture (tex);
cogl_push_framebuffer (offscreen);
/* red, top left */
cogl_set_source_color4ub (0xff, 0x00, 0x00, 0xff);
cogl_rectangle (-1, 1, 0, 0);
/* green, top right */
cogl_set_source_color4ub (0x00, 0xff, 0x00, 0xff);
cogl_rectangle (0, 1, 1, 0);
/* blue, bottom left */
cogl_set_source_color4ub (0x00, 0x00, 0xff, 0xff);
cogl_rectangle (-1, 0, 0, -1);
/* white, bottom right */
cogl_set_source_color4ub (0xff, 0xff, 0xff, 0xff);
cogl_rectangle (0, 0, 1, -1);
pixels = g_malloc0 (FRAMEBUFFER_WIDTH * 4 * FRAMEBUFFER_HEIGHT);
cogl_read_pixels (0, 0, FRAMEBUFFER_WIDTH, FRAMEBUFFER_HEIGHT,
COGL_READ_PIXELS_COLOR_BUFFER,
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
(guchar *)pixels);
g_assert_cmpint (pixels[0], ==, 0xff0000ff);
g_assert_cmpint (pixels[FRAMEBUFFER_WIDTH - 1], ==, 0xff00ff00);
g_assert_cmpint (pixels[(FRAMEBUFFER_HEIGHT - 1) * FRAMEBUFFER_WIDTH], ==, 0xffff0000);
g_assert_cmpint (pixels[(FRAMEBUFFER_HEIGHT - 1) * FRAMEBUFFER_WIDTH + FRAMEBUFFER_WIDTH - 1], ==, 0xffffffff);
g_free (pixels);
cogl_pop_framebuffer ();
cogl_handle_unref (offscreen);
/* Now verify reading back from an onscreen framebuffer...
*/
cogl_set_source_texture (tex);
cogl_rectangle (-1, 1, 1, -1);
pixels = g_malloc0 (FRAMEBUFFER_WIDTH * 4 * FRAMEBUFFER_HEIGHT);
cogl_read_pixels (0, 0, FRAMEBUFFER_WIDTH, FRAMEBUFFER_HEIGHT,
COGL_READ_PIXELS_COLOR_BUFFER,
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
(guchar *)pixels);
g_assert_cmpint (pixels[0], ==, 0xff0000ff);
g_assert_cmpint (pixels[FRAMEBUFFER_WIDTH - 1], ==, 0xff00ff00);
g_assert_cmpint (pixels[(FRAMEBUFFER_HEIGHT - 1) * FRAMEBUFFER_WIDTH], ==, 0xffff0000);
g_assert_cmpint (pixels[(FRAMEBUFFER_HEIGHT - 1) * FRAMEBUFFER_WIDTH + FRAMEBUFFER_WIDTH - 1], ==, 0xffffffff);
g_free (pixels);
/* Verify using BGR format */
cogl_set_source_texture (tex);
cogl_rectangle (-1, 1, 1, -1);
pixelsc = g_malloc0 (FRAMEBUFFER_WIDTH * 3 * FRAMEBUFFER_HEIGHT);
cogl_read_pixels (0, 0, FRAMEBUFFER_WIDTH, FRAMEBUFFER_HEIGHT,
COGL_READ_PIXELS_COLOR_BUFFER,
COGL_PIXEL_FORMAT_BGR_888,
(guchar *)pixelsc);
g_assert_cmpint (pixelsc[0], ==, 0x00);
g_assert_cmpint (pixelsc[1], ==, 0x00);
g_assert_cmpint (pixelsc[2], ==, 0xff);
g_assert_cmpint (pixelsc[(FRAMEBUFFER_WIDTH - 1) * 3 + 0], ==, 0x00);
g_assert_cmpint (pixelsc[(FRAMEBUFFER_WIDTH - 1) * 3 + 1], ==, 0xff);
g_assert_cmpint (pixelsc[(FRAMEBUFFER_WIDTH - 1) * 3 + 2], ==, 0x00);
g_free (pixelsc);
cogl_handle_unref (tex);
/* Restore the viewport and matrices state */
cogl_set_viewport (saved_viewport[0],
saved_viewport[1],
saved_viewport[2],
saved_viewport[3]);
cogl_set_projection_matrix (&saved_projection);
cogl_pop_matrix ();
/* Comment this out if you want visual feedback of what this test
* paints.
*/
clutter_main_quit ();
}
static CoglBool
queue_redraw (void *stage)
{
clutter_actor_queue_redraw (CLUTTER_ACTOR (stage));
return TRUE;
}
void
test_readpixels (TestUtilsGTestFixture *fixture,
void *data)
{
unsigned int idle_source;
ClutterActor *stage;
stage = clutter_stage_get_default ();
clutter_stage_set_color (CLUTTER_STAGE (stage), &stage_color);
/* We force continuous redrawing of the stage, since we need to skip
* the first few frames, and we wont be doing anything else that
* will trigger redrawing. */
idle_source = g_idle_add (queue_redraw, stage);
g_signal_connect_after (stage, "paint", G_CALLBACK (on_paint), NULL);
clutter_actor_show (stage);
clutter_main ();
g_source_remove (idle_source);
/* Remove all of the actors from the stage */
clutter_container_foreach (CLUTTER_CONTAINER (stage),
(ClutterCallback) clutter_actor_destroy,
NULL);
if (cogl_test_verbose ())
g_print ("OK\n");
}
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