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

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file supersample.cpp
   3 **      \brief Template Header
   4 **
   5 **      \legal
   6 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   7 **
   8 **      This package is free software; you can redistribute it and/or
   9 **      modify it under the terms of the GNU General Public License as
  10 **      published by the Free Software Foundation; either version 2 of
  11 **      the License, or (at your option) any later version.
  12 **
  13 **      This package is distributed in the hope that it will be useful,
  14 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16 **      General Public License for more details.
  17 **      \endlegal
  18 **
  19 ** === N O T E S ===========================================================
  20 **
  21 ** ========================================================================= */
  22
  23 /* === H E A D E R S ======================================================= */
  24
  25 #ifdef USING_PCH
  26 #       include "pch.h"
  27 #else
  28 #ifdef HAVE_CONFIG_H
  29 #       include <config.h>
  30 #endif
  31
  32 #include "supersample.h"
  33 #include <synfig/string.h>
  34 #include <synfig/time.h>
  35 #include <synfig/context.h>
  36 #include <synfig/paramdesc.h>
  37 #include <synfig/renddesc.h>
  38 #include <synfig/surface.h>
  39 #include <synfig/value.h>
  40 #include <synfig/valuenode.h>
  41
  42 #include <synfig/target.h>
  43 #include <synfig/render.h>
  44
  45 #endif
  46
  47 /* === M A C R O S ========================================================= */
  48
  49 /* === G L O B A L S ======================================================= */
  50
  51 SYNFIG_LAYER_INIT(SuperSample);
  52 SYNFIG_LAYER_SET_NAME(SuperSample,"super_sample");
  53 SYNFIG_LAYER_SET_LOCAL_NAME(SuperSample,_("Super Sample"));
  54 SYNFIG_LAYER_SET_CATEGORY(SuperSample,_("Other"));
  55 SYNFIG_LAYER_SET_VERSION(SuperSample,"0.1");
  56 SYNFIG_LAYER_SET_CVS_ID(SuperSample,"$Id: supersample.cpp,v 1.1.1.1 2005/01/04 01:23:10 darco Exp $");
  57
  58 /* === P R O C E D U R E S ================================================= */
  59
  60 /* === M E T H O D S ======================================================= */
  61
  62 SuperSample::SuperSample():width(2),height(2)
  63 {
  64         scanline=false;
  65         alpha_aware=true;
  66 }
  67
  68 bool
  69 SuperSample::set_param(const String & param, const ValueBase &value)
  70 {
  71
  72         IMPORT(width);
  73         IMPORT(height);
  74         IMPORT(scanline);
  75         IMPORT(alpha_aware);
  76
  77         return false;
  78 }
  79
  80 ValueBase
  81 SuperSample::get_param(const String& param)const
  82 {
  83         EXPORT(width);
  84         EXPORT(height);
  85     EXPORT(scanline);
  86     EXPORT(alpha_aware);
  87
  88         EXPORT_NAME();
  89         EXPORT_VERSION();
  90
  91         return ValueBase();
  92 }
  93
  94 bool
  95 SuperSample::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
  96 {
  97         // don't bother supersampling if our quality is too low.
  98         if(quality>=10)
  99                 return context.accelerated_render(surface,quality,renddesc,cb);
 100
 101         RendDesc desc(renddesc);
 102
 103         SuperCallback subcb(cb,1,9000,10000);
 104         SuperCallback stagetwo(cb,9000,10000,10000);
 105
 106         desc.clear_flags();
 107         desc.set_wh(desc.get_w()*width,desc.get_h()*height);
 108
 109         Surface tempsurface;
 110
 111         // Render the scene
 112         if(scanline)
 113         {
 114                 handle<Target> target=surface_target(&tempsurface);
 115                 if(!target)
 116                 {
 117                         if(cb)cb->error(_("Unable to create SurfaceTarget"));
 118                         return false;
 119                 }
 120                 target->set_rend_desc(&desc);
 121
 122                 if(!render(context-1,target,desc,&subcb))
 123                 {
 124                         if(cb)cb->error(strprintf(__FILE__"%d: Scanline Renderer Failure",__LINE__));
 125                         return false;
 126                 }
 127         }
 128         else
 129                 if(!context.accelerated_render(&tempsurface,quality,desc,cb))
 130                 {
 131                         //if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Renderer Failure",__LINE__));
 132                         return false;
 133                 }
 134
 135         surface->set_wh(renddesc.get_w(),renddesc.get_h());
 136
 137         Surface::pen pen(surface->begin());
 138         Surface::pen temp_pen(tempsurface.begin());
 139
 140         if(cb && !cb->amount_complete(9001,10000)) return false;
 141
 142         if(alpha_aware)
 143         {
 144                 int x,y,u,v;
 145                 float sum;
 146                 Color pool;
 147                 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))
 148                 {
 149                         for(x=0;x<surface->get_w();x++,pen.inc_x(),temp_pen.inc_x(width))
 150                         {
 151                                 pool=Color(0,0,0,0);
 152                                 sum=0;
 153
 154                                 for(v=0;v<height;v++,temp_pen.inc_y(),temp_pen.dec_x(u))
 155                                         for(u=0;u<width;u++,temp_pen.inc_x())
 156                                         {
 157                                                 pool+=temp_pen.get_value()*temp_pen.get_value().get_a();
 158                                                 sum+=temp_pen.get_value().get_a();
 159                                         }
 160                                 temp_pen.dec_y(v);
 161
 162                                 if(sum)
 163                                 {
 164                                         pool/=sum;
 165                                         pool.set_a(sum/float(width*height));
 166                                         pen.put_value(pool);
 167                                 }
 168                                 else
 169                                         pen.put_value(Color::alpha());
 170                         }
 171                         if(y&31==0 && cb)
 172                         {
 173                                 if(!stagetwo.amount_complete(y,surface->get_h()))
 174                                         return false;
 175                         }
 176                 }
 177         }
 178         else
 179         {
 180                 int x,y,u,v;
 181                 Color pool;
 182                 float multiplier=1.0f/float(width*height);
 183                 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))
 184                 {
 185                         for(x=0;x<surface->get_w();x++,pen.inc_x(),temp_pen.inc_x(width))
 186                         {
 187                                 pool=Color(0,0,0,0);
 188                                 for(v=0;v<height;v++,temp_pen.inc_y(),temp_pen.dec_x(u))
 189                                         for(u=0;u<width;u++,temp_pen.inc_x())
 190                                                 pool+=temp_pen.get_value();
 191                                 temp_pen.dec_y(v);
 192                                 pen.put_value(pool*multiplier);
 193                         }
 194                         if(y&31==0 && cb)
 195                         {
 196                                 if(!stagetwo.amount_complete(y,surface->get_h()))
 197                                         return false;
 198                         }
 199                 }
 200         }
 201
 202         if(cb && !cb->amount_complete(10000,10000)) return false;
 203
 204         return true;
 205 }
 206
 207 Layer::Vocab
 208 SuperSample::get_param_vocab(void)const
 209 {
 210         Layer::Vocab ret;
 211
 212         ret.push_back(ParamDesc("width")
 213                 .set_local_name(_("Width"))
 214                 .set_description(_("Width of sample area (In pixels)"))
 215         );
 216         ret.push_back(ParamDesc("height")
 217                 .set_local_name(_("Height"))
 218                 .set_description(_("Height of sample area (In pixels)"))
 219         );
 220         ret.push_back(ParamDesc("scanline")
 221                 .set_local_name(_("Use Parametric"))
 222                 .set_description(_("Use the Parametric Renderer"))
 223         );
 224         ret.push_back(ParamDesc("alpha_aware")
 225                 .set_local_name(_("Be Alpha Safe"))
 226         );
 227
 228         return ret;
 229 }
 230
 231 Rect
 232 SuperSample::get_bounding_rect(Context context)const
 233 {
 234         return context.get_full_bounding_rect();
 235 }