diff options
Diffstat (limited to 'cogl/tests/conform/test-multitexture.c')
| -rw-r--r-- | cogl/tests/conform/test-multitexture.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/cogl/tests/conform/test-multitexture.c b/cogl/tests/conform/test-multitexture.c new file mode 100644 index 000000000..da38766aa --- /dev/null +++ b/cogl/tests/conform/test-multitexture.c @@ -0,0 +1,206 @@ +#include <clutter/clutter.h> +#include <cogl/cogl.h> +#include <string.h> + +#include "test-conform-common.h" + +static const ClutterColor stage_color = { 0x0, 0x0, 0x0, 0xff }; + +#define QUAD_WIDTH 20 + +#define RED 0 +#define GREEN 1 +#define BLUE 2 +#define ALPHA 3 + +typedef struct _TestState +{ + unsigned int padding; +} TestState; + +static void +assert_region_color (int x, + int y, + int width, + int height, + uint8_t red, + uint8_t green, + uint8_t blue, + uint8_t alpha) +{ + uint8_t *data = g_malloc0 (width * height * 4); + cogl_read_pixels (x, y, width, height, + COGL_READ_PIXELS_COLOR_BUFFER, + COGL_PIXEL_FORMAT_RGBA_8888_PRE, + data); + for (y = 0; y < height; y++) + for (x = 0; x < width; x++) + { + uint8_t *pixel = &data[y * width * 4 + x * 4]; +#if 1 + g_assert (pixel[RED] == red && + pixel[GREEN] == green && + pixel[BLUE] == blue); +#endif + } + g_free (data); +} + +/* Creates a texture divided into 4 quads with colors arranged as follows: + * (The same value are used in all channels for each texel) + * + * |-----------| + * |0x11 |0x00 | + * |+ref | | + * |-----------| + * |0x00 |0x33 | + * | |+ref | + * |-----------| + * + * + */ +static CoglHandle +make_texture (guchar ref) +{ + int x; + int y; + guchar *tex_data, *p; + CoglHandle tex; + guchar val; + + tex_data = g_malloc (QUAD_WIDTH * QUAD_WIDTH * 16); + + for (y = 0; y < QUAD_WIDTH * 2; y++) + for (x = 0; x < QUAD_WIDTH * 2; x++) + { + p = tex_data + (QUAD_WIDTH * 8 * y) + x * 4; + if (x < QUAD_WIDTH && y < QUAD_WIDTH) + val = 0x11 + ref; + else if (x >= QUAD_WIDTH && y >= QUAD_WIDTH) + val = 0x33 + ref; + else + val = 0x00; + p[0] = p[1] = p[2] = p[3] = val; + } + + /* Note: we don't use COGL_PIXEL_FORMAT_ANY for the internal format here + * since we don't want to allow Cogl to premultiply our data. */ + tex = test_utils_texture_new_from_data (QUAD_WIDTH * 2, + QUAD_WIDTH * 2, + TEST_UTILS_TEXTURE_NONE, + COGL_PIXEL_FORMAT_RGBA_8888, + COGL_PIXEL_FORMAT_RGBA_8888, + QUAD_WIDTH * 8, + tex_data); + + g_free (tex_data); + + return tex; +} + +static void +on_paint (ClutterActor *actor, TestState *state) +{ + CoglHandle tex0, tex1; + CoglHandle material; + CoglBool status; + CoglError *error = NULL; + float tex_coords[] = { + 0, 0, 0.5, 0.5, /* tex0 */ + 0.5, 0.5, 1, 1 /* tex1 */ + }; + + tex0 = make_texture (0x00); + tex1 = make_texture (0x11); + + material = cogl_material_new (); + + /* An arbitrary color which should be replaced by the first texture layer */ + cogl_material_set_color4ub (material, 0x80, 0x80, 0x80, 0x80); + cogl_material_set_blend (material, "RGBA = ADD (SRC_COLOR, 0)", NULL); + + cogl_material_set_layer (material, 0, tex0); + cogl_material_set_layer_combine (material, 0, + "RGBA = REPLACE (TEXTURE)", NULL); + /* We'll use nearest filtering mode on the textures, otherwise the + edge of the quad can pull in texels from the neighbouring + quarters of the texture due to imprecision */ + cogl_material_set_layer_filters (material, 0, + COGL_MATERIAL_FILTER_NEAREST, + COGL_MATERIAL_FILTER_NEAREST); + + cogl_material_set_layer (material, 1, tex1); + cogl_material_set_layer_filters (material, 1, + COGL_MATERIAL_FILTER_NEAREST, + COGL_MATERIAL_FILTER_NEAREST); + status = cogl_material_set_layer_combine (material, 1, + "RGBA = ADD (PREVIOUS, TEXTURE)", + &error); + if (!status) + { + /* It's not strictly a test failure; you need a more capable GPU or + * driver to test this texture combine string. */ + g_debug ("Failed to setup texture combine string " + "RGBA = ADD (PREVIOUS, TEXTURE): %s", + error->message); + } + + cogl_set_source (material); + cogl_rectangle_with_multitexture_coords (0, 0, QUAD_WIDTH, QUAD_WIDTH, + tex_coords, 8); + + cogl_handle_unref (material); + cogl_handle_unref (tex0); + cogl_handle_unref (tex1); + + /* See what we got... */ + + assert_region_color (0, 0, QUAD_WIDTH, QUAD_WIDTH, + 0x55, 0x55, 0x55, 0x55); + + /* Comment this out if you want visual feedback for what this test paints */ +#if 1 + clutter_main_quit (); +#endif +} + +static CoglBool +queue_redraw (void *stage) +{ + clutter_actor_queue_redraw (CLUTTER_ACTOR (stage)); + + return TRUE; +} + +void +test_multitexture (TestUtilsGTestFixture *fixture, + void *data) +{ + TestState state; + ClutterActor *stage; + ClutterActor *group; + unsigned int idle_source; + + stage = clutter_stage_get_default (); + + clutter_stage_set_color (CLUTTER_STAGE (stage), &stage_color); + + group = clutter_group_new (); + clutter_container_add_actor (CLUTTER_CONTAINER (stage), group); + + /* We force continuous redrawing incase someone comments out the + * clutter_main_quit and wants visual feedback for the test since we + * wont be doing anything else that will trigger redrawing. */ + idle_source = g_idle_add (queue_redraw, stage); + + g_signal_connect (group, "paint", G_CALLBACK (on_paint), &state); + + clutter_actor_show_all (stage); + + clutter_main (); + + g_source_remove (idle_source); + + if (cogl_test_verbose ()) + g_print ("OK\n"); +} |