synfig-core/src/modules/lyr_std/supersample.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file supersample.cpp
   3 **      \brief Implementation of the "Super Sample" layer
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **
  10 **      This package is free software; you can redistribute it and/or
  11 **      modify it under the terms of the GNU General Public License as
  12 **      published by the Free Software Foundation; either version 2 of
  13 **      the License, or (at your option) any later version.
  14 **
  15 **      This package is distributed in the hope that it will be useful,
  16 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18 **      General Public License for more details.
  19 **      \endlegal
  20 **
  21 ** === N O T E S ===========================================================
  22 **
  23 ** ========================================================================= */
  24
  25 /* === H E A D E R S ======================================================= */
  26
  27 #ifdef USING_PCH
  28 #       include "pch.h"
  29 #else
  30 #ifdef HAVE_CONFIG_H
  31 #       include <config.h>
  32 #endif
  33
  34 #include "supersample.h"
  35 #include <synfig/string.h>
  36 #include <synfig/time.h>
  37 #include <synfig/context.h>
  38 #include <synfig/paramdesc.h>
  39 #include <synfig/renddesc.h>
  40 #include <synfig/surface.h>
  41 #include <synfig/value.h>
  42 #include <synfig/valuenode.h>
  43
  44 #include <synfig/target.h>
  45 #include <synfig/render.h>
  46
  47 #endif
  48
  49 /* === M A C R O S ========================================================= */
  50
  51 /* === G L O B A L S ======================================================= */
  52
  53 SYNFIG_LAYER_INIT(SuperSample);
  54 SYNFIG_LAYER_SET_NAME(SuperSample,"super_sample");
  55 SYNFIG_LAYER_SET_LOCAL_NAME(SuperSample,N_("Super Sample"));
  56 SYNFIG_LAYER_SET_CATEGORY(SuperSample,N_("Other"));
  57 SYNFIG_LAYER_SET_VERSION(SuperSample,"0.1");
  58 SYNFIG_LAYER_SET_CVS_ID(SuperSample,"$Id$");
  59
  60 /* === P R O C E D U R E S ================================================= */
  61
  62 /* === M E T H O D S ======================================================= */
  63
  64 SuperSample::SuperSample():width(2),height(2)
  65 {
  66         scanline=false;
  67         alpha_aware=true;
  68         Layer::Vocab voc(get_param_vocab());
  69         Layer::fill_static(voc);
  70 }
  71
  72 bool
  73 SuperSample::set_param(const String & param, const ValueBase &value)
  74 {
  75
  76         IMPORT(width);
  77         IMPORT(height);
  78         IMPORT(scanline);
  79         IMPORT(alpha_aware);
  80
  81         return false;
  82 }
  83
  84 ValueBase
  85 SuperSample::get_param(const String& param)const
  86 {
  87         EXPORT(width);
  88         EXPORT(height);
  89     EXPORT(scanline);
  90     EXPORT(alpha_aware);
  91
  92         EXPORT_NAME();
  93         EXPORT_VERSION();
  94
  95         return ValueBase();
  96 }
  97
  98 bool
  99 SuperSample::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
 100 {
 101         // don't bother supersampling if our quality is too low.
 102         if(quality>=10)
 103                 return context.accelerated_render(surface,quality,renddesc,cb);
 104
 105         RendDesc desc(renddesc);
 106
 107         SuperCallback subcb(cb,1,9000,10000);
 108         SuperCallback stagetwo(cb,9000,10000,10000);
 109
 110         desc.clear_flags();
 111         desc.set_wh(desc.get_w()*width,desc.get_h()*height);
 112
 113         Surface tempsurface;
 114
 115         // Render the scene
 116         if(scanline)
 117         {
 118                 handle<Target> target=surface_target(&tempsurface);
 119                 if(!target)
 120                 {
 121                         if(cb)cb->error(_("Unable to create SurfaceTarget"));
 122                         return false;
 123                 }
 124                 target->set_rend_desc(&desc);
 125
 126                 if(!render(context-1,target,desc,&subcb))
 127                 {
 128                         if(cb)cb->error(strprintf(__FILE__"%d: Scanline Renderer Failure",__LINE__));
 129                         return false;
 130                 }
 131         }
 132         else
 133                 if(!context.accelerated_render(&tempsurface,quality,desc,cb))
 134                 {
 135                         //if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Renderer Failure",__LINE__));
 136                         return false;
 137                 }
 138
 139         surface->set_wh(renddesc.get_w(),renddesc.get_h());
 140
 141         Surface::pen pen(surface->begin());
 142         Surface::pen temp_pen(tempsurface.begin());
 143
 144         if(cb && !cb->amount_complete(9001,10000)) return false;
 145
 146         if(alpha_aware)
 147         {
 148                 int x,y,u,v;
 149                 float sum;
 150                 Color pool;
 151                 for(y=0;y<surface->get_h();y++,pen.inc_y(),pen.dec_x(x),temp_pen.inc_y(height),temp_pen.dec_x(x*width))
 152                 {
 153                         for(x=0;x<surface->get_w();x++,pen.inc_x(),temp_pen.inc_x(width))
 154                         {
 155                                 pool=Color(0,0,0,0);
 156                                 sum=0;
 157
 158                                 for(v=0;v<height;v++,temp_pen.inc_y(),temp_pen.dec_x(u))
 159                                         for(u=0;u<width;u++,temp_pen.inc_x())
 160                                         {
 161                                                 pool+=temp_pen.get_value()*temp_pen.get_value().get_a();
 162                                                 sum+=temp_pen.get_value().get_a();
 163                                         }
 164                                 temp_pen.dec_y(v);
 165
 166                                 if(sum)
 167                                 {
 168                                         pool/=sum;
 169                                         pool.set_a(sum/float(width*height));
 170                                         pen.put_value(pool);
 171                                 }
 172                                 else
 173                                         pen.put_value(Color::alpha());
 174                         }
 175                         if((y&31)==0 && cb)
 176                         {
 177                                 if(!stagetwo.amount_complete(y,surface->get_h()))
 178                                         return false;
 179                         }
 180                 }
 181         }
 182         else
 183         {
 184                 int x,y,u,v;
 185                 Color pool;
 186                 float multiplier=1.0f/float(width*height);
 187                 for(y=0;y<surface->get_h();y++,pen.inc_y(),pen.dec_x(x),temp_pen.inc_y(height),temp_pen.dec_x(x*width))
 188                 {
 189                         for(x=0;x<surface->get_w();x++,pen.inc_x(),temp_pen.inc_x(width))
 190                         {
 191                                 pool=Color(0,0,0,0);
 192                                 for(v=0;v<height;v++,temp_pen.inc_y(),temp_pen.dec_x(u))
 193                                         for(u=0;u<width;u++,temp_pen.inc_x())
 194                                                 pool+=temp_pen.get_value();
 195                                 temp_pen.dec_y(v);
 196                                 pen.put_value(pool*multiplier);
 197                         }
 198                         if((y&31)==0 && cb)
 199                         {
 200                                 if(!stagetwo.amount_complete(y,surface->get_h()))
 201                                         return false;
 202                         }
 203                 }
 204         }
 205
 206         if(cb && !cb->amount_complete(10000,10000)) return false;
 207
 208         return true;
 209 }
 210
 211 Layer::Vocab
 212 SuperSample::get_param_vocab(void)const
 213 {
 214         Layer::Vocab ret;
 215
 216         ret.push_back(ParamDesc("width")
 217                 .set_local_name(_("Width"))
 218                 .set_description(_("Width of sample area (In pixels)"))
 219         );
 220         ret.push_back(ParamDesc("height")
 221                 .set_local_name(_("Height"))
 222                 .set_description(_("Height of sample area (In pixels)"))
 223         );
 224         ret.push_back(ParamDesc("scanline")
 225                 .set_local_name(_("Use Parametric"))
 226                 .set_description(_("Use the Parametric Renderer"))
 227         );
 228         ret.push_back(ParamDesc("alpha_aware")
 229                 .set_local_name(_("Be Alpha Safe"))
 230                 .set_description(_("Avoid alpha artifacts when checked"))
 231         );
 232
 233         return ret;
 234 }
 235
 236 Rect
 237 SuperSample::get_bounding_rect(Context context)const
 238 {
 239         return context.get_full_bounding_rect();
 240 }