#include #include #include "test-conform-common.h" static const ClutterColor stage_color = { 0x0, 0x0, 0x0, 0xff }; typedef struct _TestState { ClutterActor *stage; } TestState; static CoglHandle create_source_rect (void) { #ifdef GL_TEXTURE_RECTANGLE_ARB int x, y; GLint prev_unpack_row_length; GLint prev_unpack_alignment; GLint prev_unpack_skip_rows; GLint prev_unpack_skip_pixles; GLint prev_rectangle_binding; guint8 *data = g_malloc (256 * 256 * 4), *p = data; CoglHandle tex; GLuint gl_tex; for (y = 0; y < 256; y++) for (x = 0; x < 256; x++) { *(p++) = x; *(p++) = y; *(p++) = 0; *(p++) = 255; } /* We are about to use OpenGL directly to create a TEXTURE_RECTANGLE * texture so we need to save the state that we modify so we can * restore it afterwards and be sure not to interfere with any state * caching that Cogl may do internally. */ glGetIntegerv (GL_UNPACK_ROW_LENGTH, &prev_unpack_row_length); glGetIntegerv (GL_UNPACK_ALIGNMENT, &prev_unpack_alignment); glGetIntegerv (GL_UNPACK_SKIP_ROWS, &prev_unpack_skip_rows); glGetIntegerv (GL_UNPACK_SKIP_PIXELS, &prev_unpack_skip_pixles); glGetIntegerv (GL_TEXTURE_BINDING_RECTANGLE_ARB, &prev_rectangle_binding); glPixelStorei (GL_UNPACK_ROW_LENGTH, 256); glPixelStorei (GL_UNPACK_ALIGNMENT, 8); glPixelStorei (GL_UNPACK_SKIP_ROWS, 0); glPixelStorei (GL_UNPACK_SKIP_PIXELS, 0); glGenTextures (1, &gl_tex); glBindTexture (GL_TEXTURE_RECTANGLE_ARB, gl_tex); glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA, 256, 256, 0, GL_RGBA, GL_UNSIGNED_BYTE, data); /* Now restore the original GL state as Cogl had left it */ glPixelStorei (GL_UNPACK_ROW_LENGTH, prev_unpack_row_length); glPixelStorei (GL_UNPACK_ALIGNMENT, prev_unpack_alignment); glPixelStorei (GL_UNPACK_SKIP_ROWS, prev_unpack_skip_rows); glPixelStorei (GL_UNPACK_SKIP_PIXELS, prev_unpack_skip_pixles); glBindTexture (GL_TEXTURE_RECTANGLE_ARB, prev_rectangle_binding); g_assert (glGetError () == GL_NO_ERROR); g_free (data); tex = cogl_texture_new_from_foreign (gl_tex, GL_TEXTURE_RECTANGLE_ARB, 256, 256, 0, 0, COGL_PIXEL_FORMAT_RGBA_8888); return tex; #else /* GL_TEXTURE_RECTANGLE_ARB */ return COGL_INVALID_HANDLE; #endif /* GL_TEXTURE_RECTANGLE_ARB */ } static CoglHandle create_source_2d (void) { int x, y; guint8 *data = g_malloc (256 * 256 * 4), *p = data; CoglHandle tex; for (y = 0; y < 256; y++) for (x = 0; x < 256; x++) { *(p++) = 0; *(p++) = x; *(p++) = y; *(p++) = 255; } tex = cogl_texture_new_from_data (256, 256, COGL_TEXTURE_NONE, COGL_PIXEL_FORMAT_RGBA_8888_PRE, COGL_PIXEL_FORMAT_ANY, 256 * 4, data); g_free (data); return tex; } static void draw_frame (TestState *state) { GLuint gl_tex; CoglHandle tex_rect = create_source_rect (); CoglHandle material_rect = cogl_material_new (); CoglHandle tex_2d = create_source_2d (); CoglHandle material_2d = cogl_material_new (); g_assert (tex_rect != COGL_INVALID_HANDLE); cogl_material_set_layer (material_rect, 0, tex_rect); cogl_material_set_layer_filters (material_rect, 0, COGL_MATERIAL_FILTER_NEAREST, COGL_MATERIAL_FILTER_NEAREST); cogl_material_set_layer (material_2d, 0, tex_2d); cogl_material_set_layer_filters (material_2d, 0, COGL_MATERIAL_FILTER_NEAREST, COGL_MATERIAL_FILTER_NEAREST); cogl_set_source (material_rect); /* Render the texture repeated horizontally twice */ cogl_rectangle_with_texture_coords (0.0f, 0.0f, 512.0f, 256.0f, 0.0f, 0.0f, 2.0f, 1.0f); /* Render the top half of the texture to test without repeating */ cogl_rectangle_with_texture_coords (0.0f, 256.0f, 256.0f, 384.0f, 0.0f, 0.0f, 1.0f, 0.5f); cogl_set_source (material_2d); /* Render the top half of a regular 2D texture */ cogl_rectangle_with_texture_coords (256.0f, 256.0f, 512.0f, 384.0f, 0.0f, 0.0f, 1.0f, 0.5f); /* Flush the rendering now so we can safely delete the texture */ cogl_flush (); cogl_handle_unref (material_rect); /* Cogl doesn't destroy foreign textures so we have to do it manually */ cogl_texture_get_gl_texture (tex_rect, &gl_tex, NULL); glDeleteTextures (1, &gl_tex); cogl_handle_unref (tex_rect); } static void validate_result (TestState *state) { guint8 *data, *p; int x, y; p = data = g_malloc (512 * 384 * 4); cogl_read_pixels (0, 0, 512, 384, COGL_READ_PIXELS_COLOR_BUFFER, COGL_PIXEL_FORMAT_RGBA_8888, data); for (y = 0; y < 384; y++) for (x = 0; x < 512; x++) { if (x >= 256 && y >= 256) { g_assert_cmpint (p[0], ==, 0); g_assert_cmpint (p[1], ==, x & 0xff); g_assert_cmpint (p[2], ==, y & 0xff); } else { g_assert_cmpint (p[0], ==, x & 0xff); g_assert_cmpint (p[1], ==, y & 0xff); g_assert_cmpint (p[2], ==, 0); } p += 4; } g_free (data); /* Comment this out to see what the test paints */ clutter_main_quit (); } static void on_paint (ClutterActor *actor, TestState *state) { draw_frame (state); validate_result (state); } static gboolean queue_redraw (gpointer stage) { clutter_actor_queue_redraw (CLUTTER_ACTOR (stage)); return TRUE; } static gboolean check_rectangle_extension (void) { static const char rect_extension[] = "GL_ARB_texture_rectangle"; const char *extensions = (const char *) glGetString (GL_EXTENSIONS); const char *extensions_end; extensions_end = extensions + strlen (extensions); while (extensions < extensions_end) { const char *end = strchr (extensions, ' '); if (end == NULL) end = extensions_end; if (end - extensions == sizeof (rect_extension) - 1 && !memcmp (extensions, rect_extension, sizeof (rect_extension) - 1)) return TRUE; extensions = end + 1; } return FALSE; } void test_texture_rectangle (TestUtilsGTestFixture *fixture, void *data) { TestState state; unsigned int idle_source; unsigned int paint_handler; state.stage = clutter_stage_get_default (); /* Check whether GL supports the rectangle extension. If not we'll just assume the test passes */ if (check_rectangle_extension ()) { 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); if (cogl_test_verbose ()) g_print ("OK\n"); } else if (cogl_test_verbose ()) g_print ("Skipping\n"); }