diff --git a/synfig-core/src/synfig/layer_pastecanvas.cpp b/synfig-core/src/synfig/layer_pastecanvas.cpp index 8595593..9fdd1b4 100644 --- a/synfig-core/src/synfig/layer_pastecanvas.cpp +++ b/synfig-core/src/synfig/layer_pastecanvas.cpp @@ -561,6 +561,220 @@ Layer_PasteCanvas::accelerated_render(Context context,Surface *surface,int quali return true; } +/////// + +bool +Layer_PasteCanvas::accelerated_cairorender(Context context,cairo_surface_t *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const +{ + if(cb && !cb->amount_complete(0,10000)) return false; + + if(depth==MAX_DEPTH) + // if we are at the extent of our depth, + // then we should just return whatever is under us. + return context.accelerated_cairorender(surface,quality,renddesc,cb); + + depth_counter counter(depth); + + if(!canvas || !get_amount()) + return context.accelerated_cairorender(surface,quality,renddesc,cb); + + SuperCallback stageone(cb,0,4500,10000); + SuperCallback stagetwo(cb,4500,9000,10000); + SuperCallback stagethree(cb,9000,9999,10000); + + RendDesc desc(renddesc); + Vector::value_type zoomfactor=1.0/exp(zoom); + desc.clear_flags(); + desc.set_tl((desc.get_tl()-focus-origin)*zoomfactor+focus); + desc.set_br((desc.get_br()-focus-origin)*zoomfactor+focus); + desc.set_flags(RendDesc::PX_ASPECT); + + if (is_solid_color() || context->empty()) + { + // clear the surface + cairo_t* cr=cairo_create(surface); + cairo_set_operator(cr, CAIRO_OPERATOR_CLEAR); + cairo_paint(cr); + cairo_destroy(cr); + } + else if (!context.accelerated_cairorender(surface,quality,renddesc,&stageone)) + return false; + + Real grow_value(get_parent_canvas_grow_value()); + canvas->set_grow_value(outline_grow+grow_value); + + if(muck_with_time_ && curr_time!=Time::begin() /*&& canvas->get_time()!=curr_time+time_offset*/) + canvas->set_time(curr_time+time_offset); + + Color::BlendMethod blend_method(get_blend_method()); + const Rect full_bounding_rect(canvas->get_context().get_full_bounding_rect()); + + bool blend_using_straight = false; // use 'straight' just for the central blit + + // sometimes the user changes the parameters while we're + // rendering, causing our pasted canvas' bounding box to shrink + // and no longer overlap with our tile. if that has happened, + // let's just stop now - we'll be refreshing soon anyway + //! \todo shouldn't a mutex ensure this isn't needed? + // http://synfig.org/images/d/d2/Bbox-change.sifz is an example + // that shows this happening - open the encapsulation, select the + // 'shade', and toggle the 'invert' parameter quickly. + // Occasionally you'll see: + // error: Context::accelerated_render(): Layer "shade" threw a bad_alloc exception! + // where the shade layer tries to allocate itself a canvas of + // negative proportions, due to changing bounding boxes. + if (!etl::intersect(desc.get_rect(), full_bounding_rect)) + { + warning("%s:%d bounding box shrank while rendering?", __FILE__, __LINE__); + return true; + } + + // we have rendered what's under us, if necessary + if(context->empty()) + { + // if there's nothing under us, and we're blending 'onto', then we've finished + if (Color::is_onto(blend_method)) return true; + + // there's nothing under us, so using straight blending is + // faster than and equivalent to using composite, but we don't + // want to blank the surrounding areas + if (blend_method==Color::BLEND_COMPOSITE) blend_using_straight = true; + } + + if (!etl::intersect(context.get_full_bounding_rect(),(full_bounding_rect-focus)*exp(zoom)+origin+focus)) + { + // if there's no intersection between the context and our + // surface, and we're rendering 'onto', then we're done + if (Color::is_onto(blend_method) && !Color::is_straight(blend_method)) + return true; + + /* 'straight' is faster than 'composite' and has the same + * effect if the affected area of the lower layer is + * transparent; however, if we're not clipping the blit to + * just the bounding rectangle, the affected area is the whole + * tile, so we can't use this optimisation. if we are + * clipping, then we can use 'straight' to blit the clipped + * rectangle, but we shouldn't set blend_method to 'straight', + * or the surrounding areas will be blanked, which we don't + * want. + */ +//#ifdef SYNFIG_CLIP_PASTECANVAS +// if (blend_method==Color::BLEND_COMPOSITE) blend_using_straight = true; +//#endif // SYNFIG_CLIP_PASTECANVAS + } + +//#ifdef SYNFIG_CLIP_PASTECANVAS +// Rect area(desc.get_rect() & full_bounding_rect); +// +// Point min(area.get_min()); +// Point max(area.get_max()); +// +// if (desc.get_tl()[0] > desc.get_br()[0]) swap(min[0], max[0]); +// if (desc.get_tl()[1] > desc.get_br()[1]) swap(min[1], max[1]); +// +// const int x(floor_to_int((min[0] - desc.get_tl()[0]) / desc.get_pw())); +// const int y(floor_to_int((min[1] - desc.get_tl()[1]) / desc.get_ph())); +// const int w( ceil_to_int((max[0] - desc.get_tl()[0]) / desc.get_pw()) - x); +// const int h( ceil_to_int((max[1] - desc.get_tl()[1]) / desc.get_ph()) - y); +// +// const int tw = desc.get_w(); +// const int th = desc.get_h(); +// +// desc.set_subwindow(x,y,w,h); +// +// // \todo this used to also have "area.area()<=0.000001 || " - is it useful? +// // it was causing bug #1809480 (Zoom in beyond 8.75 in nested canvases fails) +// if(desc.get_w()==0 || desc.get_h()==0) +// { +// if(cb && !cb->amount_complete(10000,10000)) return false; +// return true; +// } +// +// // SYNFIG_CLIP_PASTECANVAS is defined, so we are only touching the +// // pixels within the affected rectangle. If the blend method is +// // 'straight', then we need to blend transparent pixels with the +// // clipped areas of this tile, because with the 'straight' blend +// // method, even transparent pixels have an effect on the layers below +// if (Color::is_straight(blend_method)) +// { +// Surface clearsurface; +// +// Surface::alpha_pen apen(surface->begin()); +// apen.set_alpha(get_amount()); +// +// // the area we're about to blit is transparent, so it doesn't +// // matter whether we use 'straight' or 'straight onto' here +// if (blend_method == Color::BLEND_ALPHA_BRIGHTEN) +// apen.set_blend_method(blend_method); +// else +// apen.set_blend_method(Color::BLEND_STRAIGHT); +// +// /* This represents the area we're pasting into the tile, +// * within the tile as a whole. Areas (A), (B), (C) and (D) +// * need blending with the underlying context if they're not +// * zero-sized: +// * +// * 0 x x+w tw +// * 0 +------------------------+ +// * | | +// * | (A) | +// * | | +// * y | - - +----------+ - - - | +// * | | | | +// * | (C) | w by h | (D) | +// * | | | | +// * y+h | - - +----------+ - - - | +// * | | +// * | (B) | +// * | | +// * tw +------------------------+ +// */ +// +// if (y > 0) // draw the full-width strip above the rectangle (A) +// { apen.move_to(0,0); clearsurface.set_wh(tw,y); clearsurface.clear(); clearsurface.blit_to(apen); } +// if (y+h < th) // draw the full-width strip below the rectangle (B) +// { apen.move_to(0,y+h); clearsurface.set_wh(tw,th-(y+h)); clearsurface.clear(); clearsurface.blit_to(apen); } +// if (x > 0) // draw the box directly left of the rectangle (C) +// { apen.move_to(0,y); clearsurface.set_wh(x,h); clearsurface.clear(); clearsurface.blit_to(apen); } +// if (x+w < tw) // draw the box directly right of the rectangle (D) +// { apen.move_to(x+w,y); clearsurface.set_wh(tw-(x+w),h); clearsurface.clear(); clearsurface.blit_to(apen); } +// } +//#endif // SYNFIG_CLIP_PASTECANVAS + + // render the canvas to be pasted onto pastesurface + cairo_surface_t* pastesurface=cairo_surface_create_similar_image(surface, CAIRO_FORMAT_ARGB32, desc.get_w(), desc.get_h()); + if(!canvas->get_context().accelerated_cairorender(pastesurface,quality,desc,&stagetwo)) + return false; + +//#ifdef SYNFIG_CLIP_PASTECANVAS +// Surface::alpha_pen apen(surface->get_pen(x,y)); +//#else // SYNFIG_CLIP_PASTECANVAS +// Surface::alpha_pen apen(surface->begin()); +//#endif // SYNFIG_CLIP_PASTECANVAS + /////////////////////////////////// +// apen.set_alpha(get_amount()); +// apen.set_blend_method(blend_using_straight ? Color::BLEND_STRAIGHT : blend_method); +// pastesurface.blit_to(apen); + + cairo_t *cr = cairo_create(surface); + + // TODO set the operator. At the moment it only supports Composite (OVER in Cairo language) + + cairo_set_source_surface(cr, pastesurface, 0, 0); + cairo_paint(cr); + cairo_destroy(cr); + + if(cb && !cb->amount_complete(10000,10000)) return false; + + return true; +} + + +/////// + + + + Rect Layer_PasteCanvas::get_bounding_rect()const { diff --git a/synfig-core/src/synfig/layer_pastecanvas.h b/synfig-core/src/synfig/layer_pastecanvas.h index 6bcb215..fc20ef1 100644 --- a/synfig-core/src/synfig/layer_pastecanvas.h +++ b/synfig-core/src/synfig/layer_pastecanvas.h @@ -168,6 +168,7 @@ public: //! Renders the Canvas to the given Surface in an accelerated manner //! See Layer::accelerated_render virtual bool accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const; + virtual bool accelerated_cairorender(Context context, cairo_surface_t *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const; //! Gets the parameter vocabulary virtual Vocab get_param_vocab()const; //! Returns the rectangle that includes the layer