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Diffstat (limited to 'tests/conform/test-offscreen.c')
| -rw-r--r-- | tests/conform/test-offscreen.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/tests/conform/test-offscreen.c b/tests/conform/test-offscreen.c new file mode 100644 index 00000000..07ab6d63 --- /dev/null +++ b/tests/conform/test-offscreen.c @@ -0,0 +1,167 @@ + +#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; + guint8 pixel[4]; + + /* 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); + + data = g_malloc (FRAMEBUFFER_WIDTH * 4 * FRAMEBUFFER_HEIGHT); + tex = cogl_texture_new_from_data (FRAMEBUFFER_WIDTH, FRAMEBUFFER_HEIGHT, + COGL_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_to_texture (tex); + + /* Set a scale and translate transform on the window framebuffer before + * switching to the offscreen framebuffer so we can verify it gets restored + * when we switch back + * + * The test is going to draw a grid of 4 colors to a texture which we + * subsequently draw to the window with a fullscreen rectangle. This + * transform will flip the texture left to right, scale it to a quater of the + * window size and slide it to the top right of the window. + */ + cogl_translate (0.5, 0.5, 0); + cogl_scale (-0.5, 0.5, 1); + + cogl_push_framebuffer (offscreen); + + /* Cogl should release the last reference when we call cogl_pop_framebuffer() + */ + cogl_handle_unref (offscreen); + + /* Setup something other than the identity matrix for the modelview so we can + * verify it gets restored when we call cogl_pop_framebuffer () */ + cogl_scale (2, 2, 1); + + /* red, top left */ + cogl_set_source_color4ub (0xff, 0x00, 0x00, 0xff); + cogl_rectangle (-0.5, 0.5, 0, 0); + /* green, top right */ + cogl_set_source_color4ub (0x00, 0xff, 0x00, 0xff); + cogl_rectangle (0, 0.5, 0.5, 0); + /* blue, bottom left */ + cogl_set_source_color4ub (0x00, 0x00, 0xff, 0xff); + cogl_rectangle (-0.5, 0, 0, -0.5); + /* white, bottom right */ + cogl_set_source_color4ub (0xff, 0xff, 0xff, 0xff); + cogl_rectangle (0, 0, 0.5, -0.5); + + cogl_pop_framebuffer (); + + cogl_set_source_texture (tex); + cogl_rectangle (-1, 1, 1, -1); + + cogl_handle_unref (tex); + + /* NB: The texture is drawn flipped horizontally and scaled to fit in the + * top right corner of the window. */ + + /* red, top right */ + cogl_read_pixels (FRAMEBUFFER_WIDTH - 1, 0, 1, 1, + COGL_READ_PIXELS_COLOR_BUFFER, + COGL_PIXEL_FORMAT_RGBA_8888_PRE, + pixel); + g_assert (pixel[RED] == 0xff && pixel[GREEN] == 0x00 && pixel[BLUE] == 0x00); + + /* green, top left */ + cogl_read_pixels ((FRAMEBUFFER_WIDTH/2), 0, 1, 1, + COGL_READ_PIXELS_COLOR_BUFFER, + COGL_PIXEL_FORMAT_RGBA_8888_PRE, + pixel); + g_assert (pixel[RED] == 0x00 && pixel[GREEN] == 0xff && pixel[BLUE] == 0x00); + + /* blue, bottom right */ + cogl_read_pixels (FRAMEBUFFER_WIDTH - 1, (FRAMEBUFFER_HEIGHT/2) - 1, 1, 1, + COGL_READ_PIXELS_COLOR_BUFFER, + COGL_PIXEL_FORMAT_RGBA_8888_PRE, + pixel); + g_assert (pixel[RED] == 0x00 && pixel[GREEN] == 0x00 && pixel[BLUE] == 0xff); + + /* white, bottom left */ + cogl_read_pixels ((FRAMEBUFFER_WIDTH/2), (FRAMEBUFFER_HEIGHT/2) - 1, 1, 1, + COGL_READ_PIXELS_COLOR_BUFFER, + COGL_PIXEL_FORMAT_RGBA_8888_PRE, + pixel); + g_assert (pixel[RED] == 0xff && pixel[GREEN] == 0xff && pixel[BLUE] == 0xff); + + /* Comment this out if you want visual feedback of what this test + * paints. + */ + clutter_main_quit (); +} + +static gboolean +queue_redraw (gpointer stage) +{ + clutter_actor_queue_redraw (CLUTTER_ACTOR (stage)); + + return TRUE; +} + +void +test_cogl_offscreen (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 (g_test_verbose ()) + g_print ("OK\n"); +} + |