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   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 }
  69
  70 bool
  71 SuperSample::set_param(const String & param, const ValueBase &value)
  72 {
  73
  74         IMPORT(width);
  75         IMPORT(height);
  76         IMPORT(scanline);
  77         IMPORT(alpha_aware);
  78
  79         return false;
  80 }
  81
  82 ValueBase
  83 SuperSample::get_param(const String& param)const
  84 {
  85         EXPORT(width);
  86         EXPORT(height);
  87     EXPORT(scanline);
  88     EXPORT(alpha_aware);
  89
  90         EXPORT_NAME();
  91         EXPORT_VERSION();
  92
  93         return ValueBase();
  94 }
  95
  96 bool
  97 SuperSample::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
  98 {
  99         // don't bother supersampling if our quality is too low.
 100         if(quality>=10)
 101                 return context.accelerated_render(surface,quality,renddesc,cb);
 102
 103         RendDesc desc(renddesc);
 104
 105         SuperCallback subcb(cb,1,9000,10000);
 106         SuperCallback stagetwo(cb,9000,10000,10000);
 107
 108         desc.clear_flags();
 109         desc.set_wh(desc.get_w()*width,desc.get_h()*height);
 110
 111         Surface tempsurface;
 112
 113         // Render the scene
 114         if(scanline)
 115         {
 116                 handle<Target> target=surface_target(&tempsurface);
 117                 if(!target)
 118                 {
 119                         if(cb)cb->error(_("Unable to create SurfaceTarget"));
 120                         return false;
 121                 }
 122                 target->set_rend_desc(&desc);
 123
 124                 if(!render(context-1,target,desc,&subcb))
 125                 {
 126                         if(cb)cb->error(strprintf(__FILE__"%d: Scanline Renderer Failure",__LINE__));
 127                         return false;
 128                 }
 129         }
 130         else
 131                 if(!context.accelerated_render(&tempsurface,quality,desc,cb))
 132                 {
 133                         //if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Renderer Failure",__LINE__));
 134                         return false;
 135                 }
 136
 137         surface->set_wh(renddesc.get_w(),renddesc.get_h());
 138
 139         Surface::pen pen(surface->begin());
 140         Surface::pen temp_pen(tempsurface.begin());
 141
 142         if(cb && !cb->amount_complete(9001,10000)) return false;
 143
 144         if(alpha_aware)
 145         {
 146                 int x,y,u,v;
 147                 float sum;
 148                 Color pool;
 149                 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))
 150                 {
 151                         for(x=0;x<surface->get_w();x++,pen.inc_x(),temp_pen.inc_x(width))
 152                         {
 153                                 pool=Color(0,0,0,0);
 154                                 sum=0;
 155
 156                                 for(v=0;v<height;v++,temp_pen.inc_y(),temp_pen.dec_x(u))
 157                                         for(u=0;u<width;u++,temp_pen.inc_x())
 158                                         {
 159                                                 pool+=temp_pen.get_value()*temp_pen.get_value().get_a();
 160                                                 sum+=temp_pen.get_value().get_a();
 161                                         }
 162                                 temp_pen.dec_y(v);
 163
 164                                 if(sum)
 165                                 {
 166                                         pool/=sum;
 167                                         pool.set_a(sum/float(width*height));
 168                                         pen.put_value(pool);
 169                                 }
 170                                 else
 171                                         pen.put_value(Color::alpha());
 172                         }
 173                         if((y&31)==0 && cb)
 174                         {
 175                                 if(!stagetwo.amount_complete(y,surface->get_h()))
 176                                         return false;
 177                         }
 178                 }
 179         }
 180         else
 181         {
 182                 int x,y,u,v;
 183                 Color pool;
 184                 float multiplier=1.0f/float(width*height);
 185                 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))
 186                 {
 187                         for(x=0;x<surface->get_w();x++,pen.inc_x(),temp_pen.inc_x(width))
 188                         {
 189                                 pool=Color(0,0,0,0);
 190                                 for(v=0;v<height;v++,temp_pen.inc_y(),temp_pen.dec_x(u))
 191                                         for(u=0;u<width;u++,temp_pen.inc_x())
 192                                                 pool+=temp_pen.get_value();
 193                                 temp_pen.dec_y(v);
 194                                 pen.put_value(pool*multiplier);
 195                         }
 196                         if((y&31)==0 && cb)
 197                         {
 198                                 if(!stagetwo.amount_complete(y,surface->get_h()))
 199                                         return false;
 200                         }
 201                 }
 202         }
 203
 204         if(cb && !cb->amount_complete(10000,10000)) return false;
 205
 206         return true;
 207 }
 208
 209 Layer::Vocab
 210 SuperSample::get_param_vocab(void)const
 211 {
 212         Layer::Vocab ret;
 213
 214         ret.push_back(ParamDesc("width")
 215                 .set_local_name(_("Width"))
 216                 .set_description(_("Width of sample area (In pixels)"))
 217         );
 218         ret.push_back(ParamDesc("height")
 219                 .set_local_name(_("Height"))
 220                 .set_description(_("Height of sample area (In pixels)"))
 221         );
 222         ret.push_back(ParamDesc("scanline")
 223                 .set_local_name(_("Use Parametric"))
 224                 .set_description(_("Use the Parametric Renderer"))
 225         );
 226         ret.push_back(ParamDesc("alpha_aware")
 227                 .set_local_name(_("Be Alpha Safe"))
 228         );
 229
 230         return ret;
 231 }
 232
 233 Rect
 234 SuperSample::get_bounding_rect(Context context)const
 235 {
 236         return context.get_full_bounding_rect();
 237 }