source/render/sequence.cpp

   1 #include <msp/core/maputils.h>
   2 #include "blend.h"
   3 #include "camera.h"
   4 #include "framebuffer.h"
   5 #include "lighting.h"
   6 #include "postprocessor.h"
   7 #include "renderer.h"
   8 #include "sequence.h"
   9 #include "texture2d.h"
  10 #include "view.h"
  11
  12 using namespace std;
  13
  14 namespace Msp {
  15 namespace GL {
  16
  17 Sequence::Sequence(unsigned w, unsigned h, bool d)
  18 {
  19         init(w, h);
  20         hdr = d;
  21 }
  22
  23 Sequence::Sequence(const View &view)
  24 {
  25         init(view.get_width(), view.get_height());
  26 }
  27
  28 Sequence::Sequence(const Framebuffer &fbo)
  29 {
  30         init(fbo.get_width(), fbo.get_height());
  31 }
  32
  33 void Sequence::init(unsigned w, unsigned h)
  34 {
  35         camera = 0;
  36         width = w;
  37         height = h;
  38         hdr = false;
  39         alpha = false;
  40         samples = 0;
  41         target_ms = 0;
  42         target[0] = 0;
  43         target[1] = 0;
  44 }
  45
  46 Sequence::~Sequence()
  47 {
  48         for(vector<PostProcStep>::iterator i=postproc.begin(); i!=postproc.end(); ++i)
  49                 if(i->owned)
  50                         delete i->postproc;
  51         delete target[0];
  52         delete target[1];
  53         delete target_ms;
  54 }
  55
  56 void Sequence::set_hdr(bool h)
  57 {
  58         if(h==hdr)
  59                 return;
  60
  61         bool old_hdr = hdr;
  62         hdr = h;
  63         try
  64         {
  65                 create_targets(2);
  66         }
  67         catch(...)
  68         {
  69                 hdr = old_hdr;
  70                 throw;
  71         }
  72 }
  73
  74 void Sequence::set_alpha(bool a)
  75 {
  76         if(a==alpha)
  77                 return;
  78
  79         bool old_alpha = alpha;
  80         alpha = a;
  81         try
  82         {
  83                 create_targets(2);
  84         }
  85         catch(...)
  86         {
  87                 alpha = old_alpha;
  88                 throw;
  89         }
  90 }
  91
  92 void Sequence::set_multisample(unsigned s)
  93 {
  94         if(s==samples)
  95                 return;
  96
  97         unsigned old_samples = samples;
  98         samples = s;
  99         try
 100         {
 101                 create_targets(1);
 102         }
 103         catch(...)
 104         {
 105                 samples = old_samples;
 106                 throw;
 107         }
 108 }
 109
 110 Sequence::Step &Sequence::add_step(Tag tag, Renderable &r)
 111 {
 112         steps.push_back(Step(tag, &r));
 113         return steps.back();
 114 }
 115
 116 void Sequence::add_postprocessor(PostProcessor &pp)
 117 {
 118         add_postprocessor(&pp, false);
 119 }
 120
 121 void Sequence::add_postprocessor_owned(PostProcessor *pp)
 122 {
 123         add_postprocessor(pp, true);
 124 }
 125
 126 void Sequence::add_postprocessor(PostProcessor *pp, bool owned)
 127 {
 128         postproc.push_back(PostProcStep(pp, owned));
 129         try
 130         {
 131                 create_targets(0);
 132         }
 133         catch(...)
 134         {
 135                 if(!owned)
 136                         delete pp;
 137                 postproc.pop_back();
 138                 throw;
 139         }
 140 }
 141
 142 void Sequence::setup_frame(Renderer &renderer)
 143 {
 144         for(vector<Step>::const_iterator i=steps.begin(); i!=steps.end(); ++i)
 145                 if(Renderable *renderable = i->get_renderable())
 146                         renderable->setup_frame(renderer);
 147 }
 148
 149 void Sequence::finish_frame()
 150 {
 151         for(vector<Step>::const_iterator i=steps.begin(); i!=steps.end(); ++i)
 152                 if(Renderable *renderable = i->get_renderable())
 153                         renderable->finish_frame();
 154 }
 155
 156 void Sequence::render(Renderer &renderer, Tag tag) const
 157 {
 158         if(tag.id)
 159                 return;
 160
 161         Renderer::Push _push(renderer);
 162
 163         const Framebuffer *out_fbo = renderer.get_framebuffer();
 164
 165         if(target[0])
 166         {
 167                 renderer.set_framebuffer(&(samples ? target_ms : target[0])->get_framebuffer());
 168                 renderer.clear();
 169         }
 170
 171         for(vector<Step>::const_iterator i=steps.begin(); i!=steps.end(); ++i)
 172         {
 173                 Renderer::Push _push2(renderer);
 174
 175                 renderer.set_depth_test(&i->get_depth_test());
 176                 renderer.set_stencil_test(&i->get_stencil_test());
 177                 renderer.set_blend(&i->get_blend());
 178
 179                 if (const Lighting *lighting = i->get_lighting())
 180                         renderer.add_shader_data(lighting->get_shader_data());
 181                 renderer.set_clipping(i->get_clipping());
 182
 183                 if(const Renderable *renderable = i->get_renderable())
 184                         renderer.render(*renderable, i->get_tag());
 185         }
 186
 187         if(target[0])
 188         {
 189                 if(samples)
 190                         renderer.resolve_multisample(target[0]->get_framebuffer(), COLOR_BUFFER_BIT|DEPTH_BUFFER_BIT);
 191
 192                 renderer.set_depth_test(0);
 193                 renderer.set_stencil_test(0);
 194                 renderer.set_blend(0);
 195
 196                 for(unsigned i=0; i<postproc.size(); ++i)
 197                 {
 198                         unsigned j = i%2;
 199                         renderer.set_framebuffer(i+1<postproc.size() ? &target[1-j]->get_framebuffer() : out_fbo);
 200                         const Texture2D &color = target[j]->get_target_texture(RENDER_COLOR);
 201                         const Texture2D &depth = target[j]->get_target_texture(RENDER_DEPTH);
 202                         postproc[i].postproc->render(renderer, color, depth);
 203                 }
 204         }
 205 }
 206
 207 void Sequence::create_targets(unsigned recreate)
 208 {
 209         if(recreate>=2)
 210         {
 211                 delete target[0];
 212                 delete target[1];
 213                 target[0] = 0;
 214                 target[1] = 0;
 215         }
 216         if(recreate>=1)
 217         {
 218                 delete target_ms;
 219                 target_ms = 0;
 220         }
 221
 222         PixelFormat color_pf = (hdr ? (alpha ? RGBA16F : RGB16F) : (alpha ? RGBA8 : RGB8));
 223         RenderTargetFormat fmt = (RENDER_COLOR,color_pf, RENDER_DEPTH);
 224         if(!postproc.empty() || samples)
 225         {
 226                 if(!target[0])
 227                         target[0] = new RenderTarget(width, height, fmt);
 228                 if(!target[1] && postproc.size()>1)
 229                         target[1] = new RenderTarget(width, height, fmt);
 230         }
 231
 232         if(!target_ms && samples)
 233                 target_ms = new RenderTarget(width, height, samples, fmt);
 234
 235 #ifdef DEBUG
 236         if(!debug_name.empty())
 237                 set_target_debug_names();
 238 #endif
 239 }
 240
 241 void Sequence::set_debug_name(const string &name)
 242 {
 243 #ifdef DEBUG
 244         debug_name = name;
 245         if(!name.empty())
 246                 set_target_debug_names();
 247 #else
 248         (void)name;
 249 #endif
 250 }
 251
 252 void Sequence::set_target_debug_names()
 253 {
 254 #ifdef DEBUG
 255         for(unsigned i=0; i<2; ++i)
 256                 if(target[i])
 257                         target[i]->set_debug_name(format("%s [RT:%d]", debug_name, i));
 258         if(target_ms)
 259                 target_ms->set_debug_name(debug_name+" [RT:ms]");
 260 #endif
 261 }
 262
 263
 264 Sequence::Step::Step(Tag t, Renderable *r):
 265         tag(t),
 266         lighting(0),
 267         clipping(0),
 268         renderable(r)
 269 { }
 270
 271 void Sequence::Step::set_lighting(const Lighting *l)
 272 {
 273         lighting = l;
 274 }
 275
 276 void Sequence::Step::set_depth_test(const DepthTest &dt)
 277 {
 278         depth_test = dt;
 279 }
 280
 281 void Sequence::Step::set_stencil_test(const StencilTest &st)
 282 {
 283         stencil_test = st;
 284 }
 285
 286 void Sequence::Step::set_blend(const Blend &b)
 287 {
 288         blend = b;
 289 }
 290
 291 void Sequence::Step::set_clipping(const Clipping *c)
 292 {
 293         clipping = c;
 294 }
 295
 296 } // namespace GL
 297 } // namespace Msp