source/builders/sequencebuilder.cpp

   1 #include <msp/core/algorithm.h>
   2 #include <msp/core/maputils.h>
   3 #include <msp/strings/format.h>
   4 #include "device.h"
   5 #include "error.h"
   6 #include "sequence.h"
   7 #include "sequencebuilder.h"
   8 #include "sequencetemplate.h"
   9 #include "view.h"
  10
  11 using namespace std;
  12
  13 namespace Msp {
  14 namespace GL {
  15
  16 SequenceBuilder::SequenceBuilder(const SequenceTemplate &t):
  17         tmpl(t)
  18 {
  19         for(const SequenceTemplate::Renderable &r: tmpl.get_renderables())
  20                 renderables[r.slot_name] = r.renderable;
  21         for(const SequenceTemplate::PostProcessor &p: tmpl.get_postprocessors())
  22                 if(!p.slot_name.empty())
  23                         postprocessors[p.slot_name] = 0;
  24 }
  25
  26 void SequenceBuilder::set_renderable(const string &name, Renderable &rend)
  27 {
  28         get_item(renderables, name) = &rend;
  29 }
  30
  31 void SequenceBuilder::set_postprocessor(const string &name, PostProcessor &pproc)
  32 {
  33         get_item(postprocessors, name) = &pproc;
  34 }
  35
  36 void SequenceBuilder::set_debug_name(const string &name)
  37 {
  38 #ifdef DEBUG
  39         debug_name = name;
  40 #else
  41         (void)name;
  42 #endif
  43 }
  44
  45 void SequenceBuilder::build(Sequence &sequence) const
  46 {
  47 #ifdef DEBUG
  48         if(!debug_name.empty())
  49                 sequence.set_debug_name(debug_name);
  50 #endif
  51
  52         map<string, Renderable *> final_renderables = renderables;
  53         vector<const SequenceTemplate::Renderable *> sequences;
  54         for(const SequenceTemplate::Renderable &r: tmpl.get_renderables())
  55         {
  56                 Renderable *&ptr = final_renderables[r.slot_name];
  57                 if(!ptr)
  58                 {
  59                         if(r.effect_template)
  60                         {
  61                                 Effect *effect = r.effect_template->create(final_renderables);
  62 #ifdef DEBUG
  63                                 if(!debug_name.empty())
  64                                         effect->set_debug_name(format("%s/%s", debug_name, r.slot_name));
  65 #endif
  66                                 ptr = effect;
  67                         }
  68                         else if(r.sequence_template)
  69                         {
  70                                 Sequence *seq = new Sequence;
  71 #ifdef DEBUG
  72                                 if(!debug_name.empty())
  73                                         seq->set_debug_name(format("%s/%s", debug_name, r.slot_name));
  74 #endif
  75                                 ptr = seq;
  76                                 sequences.push_back(&r);
  77                         }
  78                         else
  79                                 throw invalid_operation("SequenceBuilder::build");
  80
  81                         sequence.add_owned(ptr);
  82                 }
  83         }
  84
  85         for(const SequenceTemplate::Renderable *s: sequences)
  86         {
  87                 SequenceBuilder bld(*s->sequence_template);
  88                 for(const auto &kvp: s->sequence_renderables)
  89                         if(Renderable *r = get_item(final_renderables, kvp.second))
  90                                 bld.set_renderable(kvp.first, *r);
  91                 bld.build(*static_cast<Sequence *>(get_item(final_renderables, s->slot_name)));
  92         }
  93
  94         sequence.set_clear_enabled(tmpl.is_clear_enabled());
  95         if(tmpl.is_clear_enabled())
  96         {
  97                 sequence.set_clear_colors(tmpl.get_clear_colors());
  98                 sequence.set_clear_depth(tmpl.get_clear_depth());
  99                 sequence.set_clear_stencil(tmpl.get_clear_stencil());
 100         }
 101
 102         for(const SequenceTemplate::Step &s: tmpl.get_steps())
 103         {
 104                 // Existence is already ensured above
 105                 Renderable &renderable = *get_item(final_renderables, s.renderable_name);
 106                 Sequence::Step &step = sequence.add_step(s.tag, renderable);
 107                 step.set_depth_test(s.depth_test);
 108                 step.set_stencil_test(s.stencil_test);
 109                 step.set_lighting(s.lighting);
 110         }
 111
 112 #ifdef DEBUG
 113         unsigned index = 0;
 114 #endif
 115         for(const SequenceTemplate::PostProcessor &p: tmpl.get_postprocessors())
 116         {
 117                 PostProcessor *proc = 0;
 118                 if(!p.slot_name.empty())
 119                         proc = get_item(postprocessors, p.slot_name);
 120                 if(!proc)
 121                 {
 122                         if(p.postprocessor_template)
 123                         {
 124                                 proc = p.postprocessor_template->create(sequence.get_width(), sequence.get_height());
 125 #ifdef DEBUG
 126                                 if(!debug_name.empty())
 127                                         proc->set_debug_name(format("%s/%d.pproc", debug_name, index++));
 128 #endif
 129                         }
 130                         else
 131                                 throw invalid_operation("SequenceBuilder::build");
 132
 133                         sequence.add_owned(proc);
 134                 }
 135
 136                 sequence.add_postprocessor(*proc);
 137         }
 138 }
 139
 140 Sequence *SequenceBuilder::build() const
 141 {
 142         RefPtr<Sequence> sequence = new Sequence();
 143         build(*sequence);
 144         return sequence.release();
 145 }
 146
 147 Sequence *SequenceBuilder::build(unsigned w, unsigned h) const
 148 {
 149         RefPtr<Sequence> sequence = create_sequence(w, h);
 150         build(*sequence);
 151         return sequence.release();
 152 }
 153
 154 Sequence *SequenceBuilder::build(const View &view) const
 155 {
 156         RefPtr<Sequence> sequence = create_sequence(view.get_width(), view.get_height());
 157         build(*sequence);
 158         return sequence.release();
 159 }
 160
 161 Sequence *SequenceBuilder::build(const Framebuffer &fbo) const
 162 {
 163         RefPtr<Sequence> sequence = create_sequence(fbo.get_width(), fbo.get_height());
 164         build(*sequence);
 165         return sequence.release();
 166 }
 167
 168 Sequence * SequenceBuilder::create_sequence(unsigned w, unsigned h) const
 169 {
 170         if(!w || !h || tmpl.get_postprocessors().empty())
 171                 return new Sequence;
 172
 173         unsigned samples = min(tmpl.get_maximum_multisample(), Device::get_current().get_info().limits.max_samples);
 174         if(samples<tmpl.get_required_multisample())
 175                 throw invalid_operation("SequenceBuilder::create_frame_format");
 176
 177         DataType color_type = (tmpl.get_hdr() ? HALF_FLOAT : UNSIGNED_BYTE);
 178         PixelFormat color_pf = make_pixelformat(RGBA, color_type);
 179
 180         FrameFormat format = (COLOR_ATTACHMENT,color_pf, DEPTH_ATTACHMENT).set_samples(samples);
 181         return new Sequence(w, h, format);
 182 }
 183
 184 } // namespace GL
 185 } // namespace Msp