static void
create_dummy_control_points(entity_state_t *entity_state)
{
rig_selection_tool_t *tool = entity_state->tool;
cg_texture_t *tex =
rut_load_texture_from_data_file(tool->shell, "dot.png", NULL);
control_point_t *point;
point = c_slice_new0(control_point_t);
point->entity_state = entity_state;
point->x = 0;
point->y = 0;
point->z = 0;
point->transform = rut_transform_new(tool->shell);
rut_graphable_add_child(tool->tool_overlay, point->transform);
rut_object_unref(point->transform);
point->marker = rut_nine_slice_new(tool->shell, tex, 0, 0, 0, 0, 10, 10);
rut_graphable_add_child(point->transform, point->marker);
rut_object_unref(point->marker);
point->input_region =
rut_input_region_new_circle(0, 0, 5, control_point_input_cb, point);
rut_graphable_add_child(tool->tool_overlay, point->input_region);
rut_object_unref(point->input_region);
entity_state->control_points =
c_llist_prepend(entity_state->control_points, point);
point = c_slice_new0(control_point_t);
point->entity_state = entity_state;
point->x = 100;
point->y = 0;
point->z = 0;
point->transform = rut_transform_new(tool->shell);
rut_graphable_add_child(tool->tool_overlay, point->transform);
rut_object_unref(point->transform);
point->marker = rut_nine_slice_new(tool->shell, tex, 0, 0, 0, 0, 10, 10);
rut_graphable_add_child(point->transform, point->marker);
rut_object_unref(point->marker);
point->input_region =
rut_input_region_new_circle(0, 0, 5, control_point_input_cb, point);
rut_graphable_add_child(tool->tool_overlay, point->input_region);
rut_object_unref(point->input_region);
entity_state->control_points =
c_llist_prepend(entity_state->control_points, point);
cg_object_unref(tex);
}
static rut_input_event_status_t
control_point_input_cb(
rut_input_region_t *region, rut_input_event_t *event, void *user_data)
{
control_point_t *point = user_data;
entity_state_t *entity_state = point->entity_state;
rig_selection_tool_t *tool = entity_state->tool;
c_return_val_if_fail(tool->selected_entities != NULL,
RUT_INPUT_EVENT_STATUS_UNHANDLED);
if (rut_input_event_get_type(event) == RUT_INPUT_EVENT_TYPE_MOTION &&
rut_motion_event_get_action(event) == RUT_MOTION_EVENT_ACTION_DOWN &&
rut_motion_event_get_button_state(event) == RUT_BUTTON_STATE_1) {
// float x = rut_motion_event_get_x (event);
// float y = rut_motion_event_get_y (event);
grab_state_t *state = c_slice_new0(grab_state_t);
state->tool = tool;
state->entity_state = entity_state;
state->point = point;
rut_shell_grab_input(tool->shell,
rut_input_event_get_camera(event),
control_point_grab_cb,
state);
return RUT_INPUT_EVENT_STATUS_HANDLED;
}
return RUT_INPUT_EVENT_STATUS_UNHANDLED;
}
cg_pixel_buffer_t *cg_pixel_buffer_new(cg_device_t *dev,
size_t size,
const void *data,
cg_error_t **error)
{
cg_pixel_buffer_t *pixel_buffer = c_slice_new0(cg_pixel_buffer_t);
cg_buffer_t *buffer = CG_BUFFER(pixel_buffer);
/* parent's constructor */
_cg_buffer_initialize(buffer,
dev,
size,
CG_BUFFER_BIND_TARGET_PIXEL_UNPACK,
CG_BUFFER_USAGE_HINT_TEXTURE,
CG_BUFFER_UPDATE_HINT_STATIC);
_cg_pixel_buffer_object_new(pixel_buffer);
if (data) {
if (!cg_buffer_set_data(
CG_BUFFER(pixel_buffer), 0, data, size, error)) {
cg_object_unref(pixel_buffer);
return NULL;
}
}
return pixel_buffer;
}
static bool
_cg_winsys_renderer_connect(cg_renderer_t *renderer,
cg_error_t **error)
{
cg_renderer_egl_t *egl_renderer;
cg_xlib_renderer_t *xlib_renderer;
renderer->winsys = c_slice_new0(cg_renderer_egl_t);
egl_renderer = renderer->winsys;
xlib_renderer = _cg_xlib_renderer_get_data(renderer);
egl_renderer->platform_vtable = &_cg_winsys_egl_vtable;
if (!_cg_xlib_renderer_connect(renderer, error))
goto error;
egl_renderer->edpy = eglGetDisplay((NativeDisplayType)xlib_renderer->xdpy);
if (!_cg_winsys_egl_renderer_connect_common(renderer, error))
goto error;
return true;
error:
_cg_winsys_renderer_disconnect(renderer);
return false;
}
rig_selection_tool_t *
rig_selection_tool_new(rig_camera_view_t *view,
rut_object_t *overlay)
{
rig_selection_tool_t *tool = c_slice_new0(rig_selection_tool_t);
rut_shell_t *shell = view->shell;
tool->view = view;
tool->shell = shell;
/* Note: we don't take a reference on this overlay to avoid creating
* a circular reference. */
tool->tool_overlay = overlay;
tool->camera = view->view_camera;
tool->camera_component =
rig_entity_get_component(tool->camera, RIG_COMPONENT_TYPE_CAMERA);
c_list_init(&tool->selection_event_cb_list);
/* pipeline to draw the tool */
tool->default_pipeline = cg_pipeline_new(shell->cg_device);
return tool;
}
static bool
_cg_winsys_renderer_connect(cg_renderer_t *renderer,
cg_error_t **error)
{
renderer->winsys = c_slice_new0(cg_renderer_webgl_t);
return true;
}
cg_memory_stack_t *
_cg_memory_stack_new(size_t initial_size_bytes)
{
cg_memory_stack_t *stack = c_slice_new0(cg_memory_stack_t);
c_list_init(&stack->sub_stacks);
_cg_memory_stack_add_sub_stack(stack, initial_size_bytes);
return stack;
}
static void
objects_selection_event_cb(rig_objects_selection_t *selection,
rig_objects_selection_event_t event,
rut_object_t *object,
void *user_data)
{
rig_selection_tool_t *tool = user_data;
entity_state_t *entity_state;
c_llist_t *l;
if (!tool->active && event == RIG_OBJECTS_SELECTION_ADD_EVENT)
return;
if (rut_object_get_type(object) != &rig_entity_type)
return;
for (l = tool->selected_entities; l; l = l->next) {
entity_state = l->data;
if (entity_state->entity == object)
break;
}
if (l == NULL)
entity_state = NULL;
switch (event) {
case RIG_OBJECTS_SELECTION_ADD_EVENT: {
c_return_if_fail(entity_state == NULL);
entity_state = c_slice_new0(entity_state_t);
entity_state->tool = tool;
entity_state->entity = rut_object_ref(object);
entity_state->control_points = NULL;
tool->selected_entities =
c_llist_prepend(tool->selected_entities, entity_state);
entity_state->sizeable = find_sizeable_component(entity_state->entity);
if (entity_state->sizeable)
create_sizeable_control_points(entity_state);
else
create_dummy_control_points(entity_state);
break;
}
case RIG_OBJECTS_SELECTION_REMOVE_EVENT:
c_return_if_fail(entity_state != NULL);
tool->selected_entities =
c_llist_remove(tool->selected_entities, entity_state);
entity_state_destroy(entity_state);
break;
}
}
static bool
_cg_winsys_egl_display_setup(cg_display_t *display,
cg_error_t **error)
{
cg_display_egl_t *egl_display = display->winsys;
cg_display_xlib_t *xlib_display;
xlib_display = c_slice_new0(cg_display_xlib_t);
egl_display->platform = xlib_display;
return true;
}
static bool
_cg_winsys_onscreen_init(cg_onscreen_t *onscreen,
cg_error_t **error)
{
cg_framebuffer_t *framebuffer = CG_FRAMEBUFFER(onscreen);
cg_device_t *dev = framebuffer->dev;
cg_display_t *display = dev->display;
cg_display_egl_t *egl_display = display->winsys;
cg_renderer_t *renderer = display->renderer;
cg_renderer_egl_t *egl_renderer = renderer->winsys;
EGLint attributes[MAX_EGL_CONFIG_ATTRIBS];
EGLConfig egl_config;
EGLint config_count = 0;
EGLBoolean status;
c_return_val_if_fail(egl_display->egl_context, false);
egl_attributes_from_framebuffer_config(
display, &framebuffer->config, attributes);
status = eglChooseConfig(
egl_renderer->edpy, attributes, &egl_config, 1, &config_count);
if (status != EGL_TRUE || config_count == 0) {
_cg_set_error(error,
CG_WINSYS_ERROR,
CG_WINSYS_ERROR_CREATE_ONSCREEN,
"Failed to find a suitable EGL configuration");
return false;
}
/* Update the real number of samples_per_pixel now that we have
* found an egl_config... */
if (framebuffer->config.samples_per_pixel) {
EGLint samples;
status = eglGetConfigAttrib(
egl_renderer->edpy, egl_config, EGL_SAMPLES, &samples);
c_return_val_if_fail(status == EGL_TRUE, true);
framebuffer->samples_per_pixel = samples;
}
onscreen->winsys = c_slice_new0(cg_onscreen_egl_t);
if (egl_renderer->platform_vtable->onscreen_init &&
!egl_renderer->platform_vtable->onscreen_init(
onscreen, egl_config, error)) {
c_slice_free(cg_onscreen_egl_t, onscreen->winsys);
return false;
}
return true;
}
static bool
_cg_winsys_display_setup(cg_display_t *display, cg_error_t **error)
{
cg_webgl_display_t *webgl_display;
int window;
EMSCRIPTEN_WEBGL_CONTEXT_HANDLE context;
EmscriptenWebGLContextAttributes attribs;
char *id;
c_return_val_if_fail(display->winsys == NULL, false);
init_webgl_attribs_from_framebuffer_config(&attribs,
&display->onscreen_template->config);
window = CGlib_Emscripten_CreateWindow(100, 100, 0, 0);
if (window < 0) {
_cg_set_error(error,
CG_WINSYS_ERROR,
CG_WINSYS_ERROR_INIT,
"create window failed");
return false;
}
CGlib_Emscripten_HideWindow(window);
id = c_strdup_printf("cg_window_%d", window);
context = emscripten_webgl_create_context(id, &attribs);
if (context < 0) {
_cg_set_error(error,
CG_WINSYS_ERROR,
CG_WINSYS_ERROR_INIT,
"create context failed");
CGlib_Emscripten_DestroyWindow(window);
c_free(id);
return false;
}
emscripten_webgl_make_context_current(context);
webgl_display = c_slice_new0(cg_webgl_display_t);
display->winsys = webgl_display;
webgl_display->window = window;
webgl_display->window_id = id;
webgl_display->context = context;
return true;
}
rig_downsampler_t *
rig_downsampler_new(rig_engine_t *engine)
{
rig_downsampler_t *downsampler = c_slice_new0(rig_downsampler_t);
cg_pipeline_t *pipeline;
downsampler->engine = engine;
pipeline = cg_pipeline_new(engine->shell->cg_device);
cg_pipeline_set_layer_texture(pipeline, 0, NULL);
cg_pipeline_set_blend(pipeline, "RGBA=ADD(SRC_COLOR, 0)", NULL);
downsampler->pipeline = pipeline;
return downsampler;
}
static bool
_cg_winsys_renderer_connect(cg_renderer_t *renderer,
cg_error_t **error)
{
if (SDL_VideoInit(NULL) < 0) {
_cg_set_error(error,
CG_WINSYS_ERROR,
CG_WINSYS_ERROR_INIT,
"SDL_Init failed: %s",
SDL_GetError());
return false;
}
renderer->winsys = c_slice_new0(cg_renderer_sdl2_t);
return true;
}
cg_onscreen_template_t *
cg_onscreen_template_new(void)
{
cg_onscreen_template_t *onscreen_template =
c_slice_new0(cg_onscreen_template_t);
char *user_config;
onscreen_template->config.swap_throttled = true;
onscreen_template->config.need_stencil = true;
onscreen_template->config.samples_per_pixel = 0;
user_config = getenv("CG_POINT_SAMPLES_PER_PIXEL");
if (user_config) {
unsigned long samples_per_pixel = strtoul(user_config, NULL, 10);
if (samples_per_pixel != ULONG_MAX)
onscreen_template->config.samples_per_pixel = samples_per_pixel;
}
return _cg_onscreen_template_object_new(onscreen_template);
}
static bool
_cg_winsys_display_setup(cg_display_t *display, cg_error_t **error)
{
cg_display_egl_t *egl_display;
cg_renderer_t *renderer = display->renderer;
cg_renderer_egl_t *egl_renderer = renderer->winsys;
c_return_val_if_fail(display->winsys == NULL, false);
egl_display = c_slice_new0(cg_display_egl_t);
display->winsys = egl_display;
#ifdef CG_HAS_WAYLAND_EGL_SERVER_SUPPORT
if (display->wayland_compositor_display) {
struct wl_display *wayland_display =
display->wayland_compositor_display;
cg_renderer_egl_t *egl_renderer = display->renderer->winsys;
if (egl_renderer->pf_eglBindWaylandDisplay)
egl_renderer->pf_eglBindWaylandDisplay(egl_renderer->edpy,
wayland_display);
}
#endif
if (egl_renderer->platform_vtable->display_setup &&
!egl_renderer->platform_vtable->display_setup(display, error))
goto error;
if (!try_create_context(display, error))
goto error;
egl_display->found_egl_config = true;
return true;
error:
_cg_winsys_display_destroy(display);
return false;
}
cg_xlib_renderer_t *
_cg_xlib_renderer_get_data(cg_renderer_t *renderer)
{
static cg_user_data_key_t key;
cg_xlib_renderer_t *data;
/* Constructs a cg_xlib_renderer_t struct on demand and attaches it to
the object using user data. It's done this way instead of using a
subclassing hierarchy in the winsys data because all EGL winsys's
need the EGL winsys data but only one of them wants the Xlib
data. */
data = cg_object_get_user_data(CG_OBJECT(renderer), &key);
if (data == NULL) {
data = c_slice_new0(cg_xlib_renderer_t);
cg_object_set_user_data(
CG_OBJECT(renderer), &key, data, destroy_xlib_renderer_data);
}
return data;
}
static bool
_cg_winsys_display_setup(cg_display_t *display, cg_error_t **error)
{
cg_display_sdl2_t *sdl_display;
const char *(*get_string_func)(GLenum name);
const char *gl_version;
c_return_val_if_fail(display->winsys == NULL, false);
sdl_display = c_slice_new0(cg_display_sdl2_t);
display->winsys = sdl_display;
set_gl_attribs_from_framebuffer_config(&display->onscreen_template->config);
if (display->renderer->driver == CG_DRIVER_GLES2) {
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK,
SDL_GL_CONTEXT_PROFILE_ES);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
} else if (display->renderer->driver == CG_DRIVER_GL3) {
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 1);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK,
SDL_GL_CONTEXT_PROFILE_CORE);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS,
SDL_GL_CONTEXT_FORWARD_COMPATIBLE_FLAG);
}
/* Create a dummy 1x1 window that never gets display so that we can
* create a GL context */
sdl_display->dummy_window =
SDL_CreateWindow("",
0,
0, /* x/y */
1,
1, /* w/h */
SDL_WINDOW_OPENGL | SDL_WINDOW_HIDDEN);
if (sdl_display->dummy_window == NULL) {
_cg_set_error(error,
CG_WINSYS_ERROR,
CG_WINSYS_ERROR_INIT,
"SDL_CreateWindow failed: %s",
SDL_GetError());
goto error;
}
sdl_display->context = SDL_GL_CreateContext(sdl_display->dummy_window);
if (sdl_display->context == NULL) {
_cg_set_error(error,
CG_WINSYS_ERROR,
CG_WINSYS_ERROR_INIT,
"SDL_GL_CreateContext failed: %s",
SDL_GetError());
goto error;
}
/* SDL doesn't seem to provide a way to select between GL and GLES
* and instead it will just pick one itself. We can at least try to
* verify that it picked the one we were expecting by looking at the
* GL version string */
get_string_func = SDL_GL_GetProcAddress("glGetString");
gl_version = get_string_func(GL_VERSION);
switch (display->renderer->driver) {
case CG_DRIVER_GL:
case CG_DRIVER_GL3:
/* The first character of the version string will be a digit if
* it's normal GL */
if (!c_ascii_isdigit(gl_version[0])) {
_cg_set_error(error,
CG_WINSYS_ERROR,
CG_WINSYS_ERROR_INIT,
"The GL driver was requested but SDL is using GLES");
goto error;
}
if (display->renderer->driver == CG_DRIVER_GL3 && gl_version[0] < '3') {
_cg_set_error(error,
CG_WINSYS_ERROR,
CG_WINSYS_ERROR_INIT,
"The GL3 driver was requested but SDL is using "
"GL %c",
gl_version[0]);
goto error;
}
break;
case CG_DRIVER_GLES2:
if (!c_str_has_prefix(gl_version, "OpenGL ES 2") &&
!c_str_has_prefix(gl_version, "OpenGL ES 3")) {
_cg_set_error(error,
CG_WINSYS_ERROR,
CG_WINSYS_ERROR_INIT,
"The GLES2 driver was requested but SDL is "
"not using GLES2 or GLES3");
goto error;
}
break;
default:
c_assert_not_reached();
}
return true;
error:
_cg_winsys_display_destroy(display);
return false;
}