--- /dev/null
+
+#define COGL_ENABLE_EXPERIMENTAL_API
+
+#include <clutter/clutter.h>
+#include <cogl/cogl.h>
+#include <string.h>
+
+#include "test-conform-common.h"
+
+#define TILE_SIZE 32.0f
+
+enum
+{
+ TILE_MAP,
+ TILE_SET_DATA,
+ NB_TILES,
+ TILE_SET_REGION,
+};
+
+typedef struct test_tile
+{
+ ClutterColor color;
+ gfloat x, y;
+ CoglHandle buffer;
+ CoglHandle texture;
+} TestTile;
+
+static const ClutterColor
+buffer_colors[] =
+ {
+ };
+
+static const ClutterColor stage_color = { 0x0, 0x0, 0x0, 0xff };
+
+typedef struct _TestState
+{
+ ClutterActor *stage;
+ guint frame;
+
+ TestTile *tiles;
+
+} TestState;
+
+static CoglHandle
+create_texture_from_buffer (CoglHandle buffer)
+{
+ CoglHandle texture;
+
+ texture = cogl_texture_new_from_buffer (buffer,
+ TILE_SIZE, TILE_SIZE,
+ COGL_TEXTURE_NO_SLICING,
+ COGL_PIXEL_FORMAT_RGBA_8888,
+ COGL_PIXEL_FORMAT_RGBA_8888,
+ TILE_SIZE * 4,
+ 0);
+
+ g_assert (texture != COGL_INVALID_HANDLE);
+
+ return texture;
+}
+
+static void
+create_map_tile (TestTile *tile)
+{
+ CoglHandle buffer;
+ guchar *map;
+ guint i;
+
+ buffer = cogl_pixel_buffer_new (TILE_SIZE * TILE_SIZE * 4);
+
+ g_assert (cogl_is_pixel_buffer (buffer));
+ g_assert (cogl_is_buffer (buffer));
+
+ /* while at it, set/get the hints */
+ cogl_buffer_set_usage_hint (buffer, COGL_BUFFER_USAGE_HINT_DRAW);
+ g_assert_cmpint (cogl_buffer_get_usage_hint (buffer),
+ ==,
+ COGL_BUFFER_USAGE_HINT_DRAW);
+ cogl_buffer_set_update_hint (buffer, COGL_BUFFER_UPDATE_HINT_DYNAMIC);
+ g_assert_cmpint (cogl_buffer_get_update_hint (buffer),
+ ==,
+ COGL_BUFFER_UPDATE_HINT_DYNAMIC);
+
+ map = cogl_buffer_map (buffer, COGL_BUFFER_ACCESS_WRITE);
+ g_assert (map);
+
+ for (i = 0; i < TILE_SIZE * TILE_SIZE * 4; i += 4)
+ memcpy (map + i, &tile->color, 4);
+
+ cogl_buffer_unmap (buffer);
+
+ tile->buffer = buffer;
+ tile->texture = create_texture_from_buffer (tile->buffer);
+}
+
+#if 0
+static void
+create_set_region_tile (TestTile *tile)
+{
+ CoglHandle buffer;
+ ClutterColor bottom_color;
+ guint rowstride = 0;
+ guchar *data;
+ guint i;
+
+ buffer = cogl_pixel_buffer_new_for_size (TILE_SIZE,
+ TILE_SIZE,
+ COGL_PIXEL_FORMAT_RGBA_8888,
+ &rowstride);
+
+ g_assert (cogl_is_pixel_buffer (buffer));
+ g_assert (cogl_is_buffer (buffer));
+
+ /* while at it, set/get the hint */
+ cogl_buffer_set_hint (buffer, COGL_BUFFER_HINT_STATIC_DRAW);
+ g_assert (cogl_buffer_get_hint (buffer) == COGL_BUFFER_HINT_STATIC_DRAW);
+
+ data = g_malloc (TILE_SIZE * TILE_SIZE * 4);
+ /* create a buffer with the data we want to copy to the buffer */
+ for (i = 0; i < TILE_SIZE * TILE_SIZE * 4; i += 4)
+ memcpy (data + i, &tile->color, 4);
+
+ cogl_pixel_buffer_set_region (buffer,
+ data,
+ TILE_SIZE, TILE_SIZE,
+ TILE_SIZE,
+ 0, 0);
+
+ bottom_color.red = tile->color.red;
+ bottom_color.green = tile->color.blue;
+ bottom_color.blue = tile->color.green;
+ bottom_color.alpha = tile->color.alpha;
+ for (i = 0; i < TILE_SIZE / 2; i++)
+ memcpy (data + i, &bottom_color, 4);
+
+ cogl_buffer_set_data (buffer, data, 0, TILE_SIZE * TILE_SIZE * 4 / 2);
+
+ g_free (data);
+
+ tile->buffer = buffer;
+ tile->texture = create_texture_from_buffer (tile->buffer);
+}
+#endif
+
+static void
+create_set_data_tile (TestTile *tile)
+{
+ CoglHandle buffer;
+ guint rowstride = 0;
+ gboolean res;
+ guchar *data;
+ guint i;
+
+ buffer = cogl_pixel_buffer_new_for_size (TILE_SIZE,
+ TILE_SIZE,
+ COGL_PIXEL_FORMAT_RGBA_8888,
+ &rowstride);
+
+ g_assert (cogl_is_pixel_buffer (buffer));
+ g_assert (cogl_is_buffer (buffer));
+ g_assert_cmpint (cogl_buffer_get_size (buffer), ==, rowstride * TILE_SIZE);
+
+ /* while at it, set/get the hint */
+ cogl_buffer_set_usage_hint (buffer, COGL_BUFFER_USAGE_HINT_DRAW);
+ g_assert_cmpint (cogl_buffer_get_usage_hint (buffer),
+ ==,
+ COGL_BUFFER_USAGE_HINT_DRAW);
+
+ /* create a buffer with the data we want to copy to the buffer */
+ data = g_malloc (TILE_SIZE * TILE_SIZE * 4);
+ for (i = 0; i < TILE_SIZE * TILE_SIZE * 4; i += 4)
+ memcpy (data + i, &tile->color, 4);
+
+ res = cogl_buffer_set_data (buffer, 0, data, TILE_SIZE * TILE_SIZE * 4);
+ g_assert (res);
+
+ g_free (data);
+
+ tile->buffer = buffer;
+ tile->texture = create_texture_from_buffer (tile->buffer);
+}
+
+static void
+draw_frame (TestState *state)
+{
+ guint i;
+
+ /* Paint the textures */
+ for (i = 0; i < NB_TILES; i++)
+ {
+ cogl_set_source_texture (state->tiles[i].texture);
+ cogl_rectangle (state->tiles[i].x,
+ state->tiles[i].y,
+ state->tiles[i].x + TILE_SIZE,
+ state->tiles[i].y + TILE_SIZE);
+ }
+
+}
+
+static gboolean
+validate_tile (TestState *state,
+ TestTile *tile)
+{
+ int x, y;
+ guchar *pixels, *p;
+
+ p = pixels = clutter_stage_read_pixels (CLUTTER_STAGE (state->stage),
+ tile->x,
+ tile->y,
+ TILE_SIZE,
+ TILE_SIZE);
+
+ /* Check whether the center of each division is the right color */
+ for (y = 0; y < TILE_SIZE; y++)
+ for (x = 0; x < TILE_SIZE; x++)
+ {
+ if (p[0] != tile->color.red ||
+ p[1] != tile->color.green ||
+ p[2] != tile->color.blue ||
+ p[3] != tile->color.alpha)
+ {
+ return FALSE;
+ }
+
+ p += 4;
+ }
+
+ return TRUE;
+}
+
+static void
+validate_result (TestState *state)
+{
+ guint i;
+
+ for (i = 0; i < NB_TILES; i++)
+ g_assert (validate_tile (state, &state->tiles[i]));
+
+ /* comment this if you want to see what's being drawn */
+#if 1
+ clutter_main_quit ();
+#endif
+}
+
+static void
+on_paint (ClutterActor *actor, TestState *state)
+{
+ int frame_num;
+
+ draw_frame (state);
+
+ /* XXX: Experiments have shown that for some buggy drivers, when using
+ * glReadPixels there is some kind of race, so we delay our test for a
+ * few frames and a few seconds:
+ */
+ /* Need to increment frame first because clutter_stage_read_pixels
+ fires a redraw */
+ frame_num = state->frame++;
+ if (frame_num == 2)
+ validate_result (state);
+ else if (frame_num < 2)
+ g_usleep (G_USEC_PER_SEC);
+}
+
+static gboolean
+queue_redraw (gpointer stage)
+{
+ clutter_actor_queue_redraw (CLUTTER_ACTOR (stage));
+
+ return TRUE;
+}
+
+void
+test_cogl_pixel_buffer (TestConformSimpleFixture *fixture,
+ gconstpointer data)
+{
+ TestState state;
+ guint idle_source;
+ guint paint_handler, i;
+ static TestTile tiles[NB_TILES] =
+ {
+ /* color x y buffer tex */
+
+ /* MAP */
+ { { 0xff, 0x00, 0x00, 0xff }, 0.0f, 0.0f, NULL, NULL },
+#if 0
+ /* SET_REGION */
+ { { 0x7e, 0x7e, 0xff, 0x7e }, 0.0f, TILE_SIZE, NULL, NULL },
+#endif
+ /* SET_DATA */
+ { { 0x7e, 0xff, 0x7e, 0xff }, 0.0f, TILE_SIZE, NULL, NULL }
+ };
+
+ state.frame = 0;
+
+ state.stage = clutter_stage_get_default ();
+
+ create_map_tile (&tiles[TILE_MAP]);
+#if 0
+ create_set_region_tile (&tiles[TILE_SET_REGION]);
+#endif
+ create_set_data_tile (&tiles[TILE_SET_DATA]);
+
+ state.tiles = tiles;
+
+ clutter_stage_set_color (CLUTTER_STAGE (state.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, state.stage);
+
+ paint_handler = g_signal_connect_after (state.stage, "paint",
+ G_CALLBACK (on_paint), &state);
+
+ clutter_actor_show_all (state.stage);
+
+ clutter_main ();
+
+ g_source_remove (idle_source);
+ g_signal_handler_disconnect (state.stage, paint_handler);
+
+ for (i = 0; i < NB_TILES; i++)
+ {
+ cogl_handle_unref (state.tiles[i].buffer);
+ cogl_handle_unref (state.tiles[i].texture);
+ }
+
+ /* Remove all of the actors from the stage */
+ clutter_container_foreach (CLUTTER_CONTAINER (state.stage),
+ (ClutterCallback) clutter_actor_destroy,
+ NULL);
+
+ if (g_test_verbose ())
+ g_print ("OK\n");
+}
+
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