bool
CurveGradient::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
{
RENDER_TRANSFORMED_IF_NEED(__FILE__, __LINE__)
SuperCallback supercb(cb,0,9500,10000);
if(get_amount()==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
{
surface->set_wh(renddesc.get_w(),renddesc.get_h());
}
else
{
if(!context.accelerated_render(surface,quality,renddesc,&supercb))
return false;
if(get_amount()==0)
return true;
}
int x,y;
Surface::pen pen(surface->begin());
const Real pw(renddesc.get_pw()),ph(renddesc.get_ph());
Point pos;
Point tl(renddesc.get_tl());
const int w(surface->get_w());
const int h(surface->get_h());
if(get_amount()==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
{
for(y=0,pos[1]=tl[1];y<h;y++,pen.inc_y(),pen.dec_x(x),pos[1]+=ph)
for(x=0,pos[0]=tl[0];x<w;x++,pen.inc_x(),pos[0]+=pw)
pen.put_value(color_func(pos,quality,calc_supersample(pos,pw,ph)));
}
else
{
for(y=0,pos[1]=tl[1];y<h;y++,pen.inc_y(),pen.dec_x(x),pos[1]+=ph)
for(x=0,pos[0]=tl[0];x<w;x++,pen.inc_x(),pos[0]+=pw)
pen.put_value(Color::blend(color_func(pos,quality,calc_supersample(pos,pw,ph)),pen.get_value(),get_amount(),get_blend_method()));
}
// Mark our progress as finished
if(cb && !cb->amount_complete(10000,10000))
return false;
return true;
}
bool
CurveGradient::accelerated_cairorender(Context context, cairo_t *cr,int quality, const RendDesc &renddesc_, ProgressCallback *cb)const
{
RendDesc renddesc(renddesc_);
// Untransform the render desc
if(!cairo_renddesc_untransform(cr, renddesc))
return false;
Point pos;
const Real pw(renddesc.get_pw()),ph(renddesc.get_ph());
const Point tl(renddesc.get_tl());
const int w(renddesc.get_w());
const int h(renddesc.get_h());
SuperCallback supercb(cb,0,9500,10000);
if(get_amount()==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
{
cairo_save(cr);
cairo_set_operator(cr, CAIRO_OPERATOR_CLEAR);
cairo_paint(cr);
cairo_restore(cr);
}
else
{
if(!context.accelerated_cairorender(cr,quality,renddesc,&supercb))
return false;
if(get_amount()==0)
return true;
}
int x,y;
cairo_surface_t *surface;
surface=cairo_surface_create_similar(cairo_get_target(cr), CAIRO_CONTENT_COLOR_ALPHA, w, h);
CairoSurface csurface(surface);
if(!csurface.map_cairo_image())
{
synfig::warning("Curve Gradient: map cairo surface failed");
return false;
}
for(y=0,pos[1]=tl[1]; y<h; y++,pos[1]+=ph)
for(x=0,pos[0]=tl[0]; x<w; x++,pos[0]+=pw)
csurface[y][x]=CairoColor(color_func(pos,calc_supersample(pos,pw,ph))).premult_alpha();
csurface.unmap_cairo_image();
// paint surface on cr
cairo_save(cr);
cairo_translate(cr, tl[0], tl[1]);
cairo_scale(cr, pw, ph);
cairo_set_source_surface(cr, surface, 0, 0);
cairo_paint_with_alpha_operator(cr, get_amount(), get_blend_method());
cairo_restore(cr);
cairo_surface_destroy(surface);
// Mark our progress as finished
if(cb && !cb->amount_complete(10000,10000))
return false;
return true;
}
bool
LinearGradient::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
{
Params params;
fill_params(params);
if (!renddesc.get_transformation_matrix().is_identity())
{
Point origin = params.p1;
Point axis_x = params.p2 - origin;
Point axis_y = axis_x.perp();
origin = renddesc.get_transformation_matrix().get_transformed(origin);
axis_x = renddesc.get_transformation_matrix().get_transformed(axis_x, false);
axis_y = renddesc.get_transformation_matrix().get_transformed(axis_y, false);
Point valid_axis_x = -axis_y.perp();
Real mag_squared = valid_axis_x.mag_squared();
if (mag_squared > 0.0)
valid_axis_x *= (valid_axis_x * axis_x)/mag_squared;
else
valid_axis_x = axis_x;
params.p1 = origin;
params.p2 = origin + valid_axis_x;
params.calc_diff();
}
SuperCallback supercb(cb,0,9500,10000);
if(get_amount()==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
{
surface->set_wh(renddesc.get_w(),renddesc.get_h());
}
else
{
if(!context.accelerated_render(surface,quality,renddesc,&supercb))
return false;
if(get_amount()==0)
return true;
}
int x,y;
Surface::pen pen(surface->begin());
const Real pw(renddesc.get_pw()),ph(renddesc.get_ph());
Point pos;
Point tl(renddesc.get_tl());
const int w(surface->get_w());
const int h(surface->get_h());
synfig::Real supersample = calc_supersample(params, pw, ph);
if(get_amount()==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
{
for(y=0,pos[1]=tl[1];y<h;y++,pen.inc_y(),pen.dec_x(x),pos[1]+=ph)
for(x=0,pos[0]=tl[0];x<w;x++,pen.inc_x(),pos[0]+=pw)
pen.put_value(color_func(params,pos,supersample));
}
else
{
for(y=0,pos[1]=tl[1];y<h;y++,pen.inc_y(),pen.dec_x(x),pos[1]+=ph)
for(x=0,pos[0]=tl[0];x<w;x++,pen.inc_x(),pos[0]+=pw)
pen.put_value(Color::blend(color_func(params,pos,supersample),pen.get_value(),get_amount(),get_blend_method()));
}
// Mark our progress as finished
if(cb && !cb->amount_complete(10000,10000))
return false;
return true;
}
