source/render/sequence.cpp

   1 #include <msp/strings/format.h>
   2 #include "error.h"
   3 #include "lighting.h"
   4 #include "postprocessor.h"
   5 #include "renderer.h"
   6 #include "rendertarget.h"
   7 #include "sequence.h"
   8 #include "texture2d.h"
   9
  10 using namespace std;
  11
  12 namespace Msp {
  13 namespace GL {
  14
  15 Tag Sequence::noclear_tag = "noclear";
  16
  17 Sequence::Sequence(unsigned w, unsigned h, const FrameFormat &f):
  18         width(w),
  19         height(h),
  20         target_format(f)
  21 {
  22         if(target_format.empty())
  23                 throw invalid_argument("Sequence::Sequence");
  24
  25         FrameFormat postproc_fmt = target_format;
  26         postproc_fmt.set_samples(1);
  27         target[0] = new RenderTarget(width, height, postproc_fmt);
  28         target[1] = new RenderTarget(width, height, postproc_fmt);
  29
  30         if(target_format.get_samples()>1)
  31                 target_ms = new RenderTarget(width, height, target_format);
  32 }
  33
  34 Sequence::~Sequence()
  35 {
  36         for(PostProcStep &p: postproc)
  37                 if(p.owned)
  38                         delete p.postproc;
  39         delete target[0];
  40         delete target[1];
  41         delete target_ms;
  42 }
  43
  44 void Sequence::set_clear_enabled(bool c)
  45 {
  46         clear_enabled = c;
  47 }
  48
  49 void Sequence::set_clear_colors(const vector<Color> &c)
  50 {
  51         clear_enabled = true;
  52         clear_colors = c;
  53 }
  54
  55 void Sequence::set_clear_depth(float d)
  56 {
  57         clear_enabled = true;
  58         clear_depth = d;
  59 }
  60
  61 void Sequence::set_clear_stencil(int s)
  62 {
  63         clear_enabled = true;
  64         clear_stencil = s;
  65 }
  66
  67 Sequence::Step &Sequence::add_step(Tag tag, Renderable &r)
  68 {
  69         steps.push_back(Step(tag, &r));
  70         return steps.back();
  71 }
  72
  73 void Sequence::add_postprocessor(PostProcessor &pp)
  74 {
  75         add_postprocessor(&pp, false);
  76 }
  77
  78 void Sequence::add_postprocessor_owned(PostProcessor *pp)
  79 {
  80         add_postprocessor(pp, true);
  81 }
  82
  83 void Sequence::add_postprocessor(PostProcessor *pp, bool owned)
  84 {
  85         if(target_format.empty())
  86         {
  87                 if(owned)
  88                         delete pp;
  89                 throw invalid_operation("Sequence::add_postprocessor");
  90         }
  91         postproc.push_back(PostProcStep(pp, owned));
  92 }
  93
  94 void Sequence::setup_frame(Renderer &renderer)
  95 {
  96         for(const Step &s: steps)
  97                 if(Renderable *renderable = s.get_renderable())
  98                         renderable->setup_frame(renderer);
  99 }
 100
 101 void Sequence::finish_frame()
 102 {
 103         for(const Step &s: steps)
 104                 if(Renderable *renderable = s.get_renderable())
 105                         renderable->finish_frame();
 106 }
 107
 108 void Sequence::render(Renderer &renderer, Tag tag) const
 109 {
 110         if(tag.id && tag!=noclear_tag)
 111                 return;
 112
 113         Renderer::Push _push(renderer);
 114
 115         const Framebuffer *out_fbo = renderer.get_framebuffer();
 116
 117         if(target[0])
 118                 renderer.set_framebuffer(&(target_ms ? target_ms : target[0])->get_framebuffer());
 119
 120         if(clear_enabled && tag!=noclear_tag)
 121         {
 122                 const Framebuffer *target_fbo = renderer.get_framebuffer();
 123                 if(!target_fbo)
 124                         throw invalid_operation("Sequence::render");
 125
 126                 const FrameFormat &format = target_fbo->get_format();
 127                 ClearValue clear_values[7];
 128                 unsigned i = 0;
 129                 Color default_color = (clear_colors.empty() ? Color(0.0f, 0.0f, 0.0f, 0.0f) : clear_colors.front());
 130                 ClearValue *cv = clear_values;
 131                 for(FrameAttachment a: format)
 132                 {
 133                         if(get_attach_point(a)==get_attach_point(DEPTH_ATTACHMENT))
 134                                 cv->depth_stencil.depth = clear_depth;
 135                         else if(get_attach_point(a)==get_attach_point(STENCIL_ATTACHMENT))
 136                                 cv->depth_stencil.stencil = clear_stencil;
 137                         else
 138                                 cv->color = (i<clear_colors.size() ? clear_colors[i++] : default_color);
 139                         ++cv;
 140                 }
 141
 142                 renderer.clear(clear_values);
 143         }
 144
 145         for(const Step &s: steps)
 146         {
 147                 Renderer::Push _push2(renderer);
 148
 149                 renderer.set_depth_test(&s.get_depth_test());
 150                 renderer.set_stencil_test(&s.get_stencil_test());
 151                 renderer.set_blend(&s.get_blend());
 152
 153                 if(const Lighting *lighting = s.get_lighting())
 154                         renderer.add_shader_data(lighting->get_shader_data());
 155
 156                 if(const Renderable *renderable = s.get_renderable())
 157                         renderer.render(*renderable, s.get_tag());
 158         }
 159
 160         if(target[0])
 161         {
 162                 if(target_ms)
 163                         renderer.resolve_multisample(target[0]->get_framebuffer());
 164
 165                 renderer.set_depth_test(0);
 166                 renderer.set_stencil_test(0);
 167                 renderer.set_blend(0);
 168
 169                 for(unsigned i=0; i<postproc.size(); ++i)
 170                 {
 171                         unsigned j = i%2;
 172                         renderer.set_framebuffer(i+1<postproc.size() ? &target[1-j]->get_framebuffer() : out_fbo);
 173                         const Texture2D &color = target[j]->get_target_texture(COLOR_ATTACHMENT);
 174                         const Texture2D &depth = target[j]->get_target_texture(DEPTH_ATTACHMENT);
 175                         postproc[i].postproc->render(renderer, color, depth);
 176                 }
 177         }
 178 }
 179
 180 void Sequence::set_debug_name(const string &name)
 181 {
 182 #ifdef DEBUG
 183         for(unsigned i=0; i<2; ++i)
 184                 if(target[i])
 185                         target[i]->set_debug_name(format("%s [RT:%d]", name, i));
 186         if(target_ms)
 187                 target_ms->set_debug_name(name+" [RT:ms]");
 188 #else
 189         (void)name;
 190 #endif
 191 }
 192
 193
 194 Sequence::Step::Step(Tag t, Renderable *r):
 195         tag(t),
 196         lighting(0),
 197         renderable(r)
 198 { }
 199
 200 void Sequence::Step::set_lighting(const Lighting *l)
 201 {
 202         lighting = l;
 203 }
 204
 205 void Sequence::Step::set_depth_test(const DepthTest &dt)
 206 {
 207         depth_test = dt;
 208 }
 209
 210 void Sequence::Step::set_stencil_test(const StencilTest &st)
 211 {
 212         stencil_test = st;
 213 }
 214
 215 void Sequence::Step::set_blend(const Blend &b)
 216 {
 217         blend = b;
 218 }
 219
 220 } // namespace GL
 221 } // namespace Msp