source/render/pipeline.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 "pipeline.h"
   7 #include "postprocessor.h"
   8 #include "renderbuffer.h"
   9 #include "renderer.h"
  10 #include "tests.h"
  11 #include "texture2d.h"
  12 #include "view.h"
  13
  14 using namespace std;
  15
  16 namespace Msp {
  17 namespace GL {
  18
  19 Pipeline::Pipeline(unsigned w, unsigned h, bool d)
  20 {
  21         init(w, h);
  22         hdr = d;
  23 }
  24
  25 Pipeline::Pipeline(const View &view)
  26 {
  27         init(view.get_width(), view.get_height());
  28 }
  29
  30 Pipeline::Pipeline(const Framebuffer &fbo)
  31 {
  32         init(fbo.get_width(), fbo.get_height());
  33 }
  34
  35 void Pipeline::init(unsigned w, unsigned h)
  36 {
  37         camera = 0;
  38         width = w;
  39         height = h;
  40         hdr = false;
  41         alpha = false;
  42         samples = 0;
  43         target_ms = 0;
  44         target[0] = 0;
  45         target[1] = 0;
  46 }
  47
  48 Pipeline::~Pipeline()
  49 {
  50         delete target[0];
  51         delete target[1];
  52         delete target_ms;
  53 }
  54
  55 void Pipeline::set_hdr(bool h)
  56 {
  57         if(h==hdr)
  58                 return;
  59
  60         bool old_hdr = hdr;
  61         hdr = h;
  62         try
  63         {
  64                 create_targets(2);
  65         }
  66         catch(...)
  67         {
  68                 hdr = old_hdr;
  69                 throw;
  70         }
  71 }
  72
  73 void Pipeline::set_alpha(bool a)
  74 {
  75         if(a==alpha)
  76                 return;
  77
  78         bool old_alpha = alpha;
  79         alpha = a;
  80         try
  81         {
  82                 create_targets(2);
  83         }
  84         catch(...)
  85         {
  86                 alpha = old_alpha;
  87                 throw;
  88         }
  89 }
  90
  91 void Pipeline::set_multisample(unsigned s)
  92 {
  93         if(s==samples)
  94                 return;
  95
  96         unsigned old_samples = samples;
  97         samples = s;
  98         try
  99         {
 100                 create_targets(1);
 101         }
 102         catch(...)
 103         {
 104                 samples = old_samples;
 105                 throw;
 106         }
 107 }
 108
 109 Pipeline::Pass &Pipeline::add_pass(Tag tag, Renderable &r)
 110 {
 111         passes.push_back(Pass(tag, &r));
 112         return passes.back();
 113 }
 114
 115 void Pipeline::add_postprocessor(PostProcessor &pp)
 116 {
 117         add_postprocessor(&pp, true);
 118 }
 119
 120 void Pipeline::add_postprocessor_owned(PostProcessor *pp)
 121 {
 122         add_postprocessor(pp, false);
 123 }
 124
 125 void Pipeline::add_postprocessor(PostProcessor *pp, bool keep)
 126 {
 127         postproc.push_back(pp);
 128         if(keep)
 129                 postproc.back().keep();
 130         try
 131         {
 132                 create_targets(0);
 133         }
 134         catch(...)
 135         {
 136                 postproc.pop_back();
 137                 throw;
 138         }
 139 }
 140
 141 void Pipeline::setup_frame(Renderer &renderer)
 142 {
 143         for(PassList::const_iterator i=passes.begin(); i!=passes.end(); ++i)
 144                 if(Renderable *renderable = i->get_renderable())
 145                         renderable->setup_frame(renderer);
 146         for(vector<Slot>::const_iterator i=renderables.begin(); i!=renderables.end(); ++i)
 147                 i->renderable->setup_frame(renderer);
 148 }
 149
 150 void Pipeline::finish_frame()
 151 {
 152         for(PassList::const_iterator i=passes.begin(); i!=passes.end(); ++i)
 153                 if(Renderable *renderable = i->get_renderable())
 154                         renderable->finish_frame();
 155         for(vector<Slot>::const_iterator i=renderables.begin(); i!=renderables.end(); ++i)
 156                 i->renderable->finish_frame();
 157 }
 158
 159 void Pipeline::render(Renderer &renderer, Tag tag) const
 160 {
 161         if(tag.id)
 162                 return;
 163
 164         const Framebuffer *out_fbo = Framebuffer::current();
 165         // These are no-ops but will ensure the related state gets restored
 166         BindRestore restore_fbo(out_fbo);
 167         BindRestore restore_depth_test(DepthTest::current());
 168         BindRestore restore_blend(Blend::current());
 169
 170         if(target[0])
 171         {
 172                 Framebuffer &fbo = (samples ? target_ms : target[0])->get_framebuffer();
 173                 fbo.bind();
 174                 fbo.clear();
 175         }
 176
 177         for(PassList::const_iterator i=passes.begin(); i!=passes.end(); ++i)
 178         {
 179                 if(const DepthTest *dt = i->get_depth_test())
 180                         dt->bind();
 181                 else
 182                         DepthTest::unbind();
 183
 184                 if(const Blend *b = i->get_blend())
 185                         b->bind();
 186                 else
 187                         Blend::unbind();
 188
 189                 renderer.set_lighting(i->get_lighting());
 190                 renderer.set_clipping(i->get_clipping());
 191
 192                 if(const Renderable *renderable = i->get_renderable())
 193                         renderer.render(*renderable, i->get_tag());
 194
 195                 for(vector<Slot>::const_iterator j=renderables.begin(); j!=renderables.end(); ++j)
 196                         if(j->passes.empty() || j->passes.count(i->get_tag()))
 197                                 renderer.render(*j->renderable, i->get_tag());
 198         }
 199
 200         if(target[0])
 201         {
 202                 DepthTest::unbind();
 203                 Blend::unbind();
 204
 205                 if(samples)
 206                         target[0]->blit_from(*target_ms);
 207
 208                 for(unsigned i=0; i<postproc.size(); ++i)
 209                 {
 210                         unsigned j = i%2;
 211                         if(i+1<postproc.size())
 212                                 target[1-j]->get_framebuffer().bind();
 213                         else
 214                                 out_fbo->bind();
 215                         const Texture2D &color = target[j]->get_target_texture(RENDER_COLOR);
 216                         const Texture2D &depth = target[j]->get_target_texture(RENDER_DEPTH);
 217                         postproc[i]->render(renderer, color, depth);
 218                 }
 219         }
 220 }
 221
 222 void Pipeline::create_targets(unsigned recreate)
 223 {
 224         if(recreate>=2)
 225         {
 226                 delete target[0];
 227                 delete target[1];
 228                 target[0] = 0;
 229                 target[1] = 0;
 230         }
 231         if(recreate>=1)
 232         {
 233                 delete target_ms;
 234                 target_ms = 0;
 235         }
 236
 237         PixelFormat color_pf = (hdr ? (alpha ? RGBA16F : RGB16F) : (alpha ? RGBA8 : RGB8));
 238         RenderTargetFormat fmt = (RENDER_COLOR,color_pf, RENDER_DEPTH);
 239         if(!postproc.empty() || samples)
 240         {
 241                 if(!target[0])
 242                         target[0] = new RenderTarget(width, height, fmt);
 243                 if(!target[1] && postproc.size()>1)
 244                         target[1] = new RenderTarget(width, height, fmt);
 245         }
 246
 247         if(!target_ms && samples)
 248                 target_ms = new RenderTarget(width, height, samples, fmt);
 249 }
 250
 251
 252 Pipeline::Pass::Pass(Tag t, Renderable *r):
 253         tag(t),
 254         lighting(0),
 255         depth_test(0),
 256         blend(0),
 257         clipping(0),
 258         renderable(r)
 259 { }
 260
 261 void Pipeline::Pass::set_lighting(const Lighting *l)
 262 {
 263         lighting = l;
 264 }
 265
 266 void Pipeline::Pass::set_depth_test(const DepthTest *d)
 267 {
 268         depth_test = d;
 269 }
 270
 271 void Pipeline::Pass::set_blend(const Blend *b)
 272 {
 273         blend = b;
 274 }
 275
 276 void Pipeline::Pass::set_clipping(const Clipping *c)
 277 {
 278         clipping =c;
 279 }
 280
 281
 282 Pipeline::Slot::Slot(Renderable *r):
 283         renderable(r)
 284 { }
 285
 286 } // namespace GL
 287 } // namespace Msp