//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// "draw" python API function
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
bool BlenderSession::draw(int w, int h) {
BufferParams buffer_params;
bool reset = false;
// Before drawing, we verify camera and viewport size changes, because
// we do not get update callbacks for those, we must detect them here
if(session->ready_to_reset()) {
// Try to acquire mutex. If we can't, come back later.
if(!session->scene->mutex.try_lock())
tag_redraw();
else {
sync->sync_view(b_v3d, b_rv3d, w, h);
session->scene->mutex.unlock();
}
// If dimensions changed, reset
if(width != w || height != h) {
width = w;
height = h;
reset = true;
}
// Reset if requested
if(reset) {
buffer_params = BlenderSync::get_display_buffer_params(scene->camera, w, h);
session->update(buffer_params);
}
}
// Update status and progress for 3d view draw
update_status_progress();
// Draw
if(!reset) buffer_params = BlenderSync::get_display_buffer_params(scene->camera, width, height);
if(!session->draw(buffer_params)) {
session->update(buffer_params);
if(!session->draw(buffer_params)) tag_redraw();
}
return true;
} //draw()
bool BlenderSession::draw(int w, int h)
{
/* pause in redraw in case update is not being called due to final render */
session->set_pause(BlenderSync::get_session_pause(b_scene, background));
/* before drawing, we verify camera and viewport size changes, because
* we do not get update callbacks for those, we must detect them here */
if(session->ready_to_reset()) {
bool reset = false;
/* if dimensions changed, reset */
if(width != w || height != h) {
if(start_resize_time == 0.0) {
/* don't react immediately to resizes to avoid flickery resizing
* of the viewport, and some window managers changing the window
* size temporarily on unminimize */
start_resize_time = time_dt();
tag_redraw();
}
else if(time_dt() - start_resize_time < 0.2) {
tag_redraw();
}
else {
width = w;
height = h;
reset = true;
}
}
/* try to acquire mutex. if we can't, come back later */
if(!session->scene->mutex.try_lock()) {
tag_update();
}
else {
/* update camera from 3d view */
sync->sync_view(b_v3d, b_rv3d, width, height);
if(scene->camera->need_update)
reset = true;
session->scene->mutex.unlock();
}
/* reset if requested */
if(reset) {
SessionParams session_params = BlenderSync::get_session_params(b_engine, b_userpref, b_scene, background);
BufferParams buffer_params = BlenderSync::get_buffer_params(b_render, b_v3d, b_rv3d, scene->camera, width, height);
bool session_pause = BlenderSync::get_session_pause(b_scene, background);
if(session_pause == false) {
session->reset(buffer_params, session_params.samples);
start_resize_time = 0.0;
}
}
}
else {
tag_update();
}
/* update status and progress for 3d view draw */
update_status_progress();
/* draw */
BufferParams buffer_params = BlenderSync::get_buffer_params(b_render, b_v3d, b_rv3d, scene->camera, width, height);
DeviceDrawParams draw_params;
if(session->params.display_buffer_linear) {
draw_params.bind_display_space_shader_cb = function_bind(&BL::RenderEngine::bind_display_space_shader, &b_engine, b_scene);
draw_params.unbind_display_space_shader_cb = function_bind(&BL::RenderEngine::unbind_display_space_shader, &b_engine);
}
return !session->draw(buffer_params, draw_params);
}
