source/render/sequence.cpp

   1 #include <msp/core/maputils.h>
   2 #include <msp/strings/format.h>
   3 #include "blend.h"
   4 #include "error.h"
   5 #include "framebuffer.h"
   6 #include "lighting.h"
   7 #include "postprocessor.h"
   8 #include "renderer.h"
   9 #include "sequence.h"
  10 #include "texture2d.h"
  11
  12 using namespace std;
  13
  14 namespace Msp {
  15 namespace GL {
  16
  17 Sequence::Sequence():
  18         width(0),
  19         height(0),
  20         target{0, 0},
  21         target_ms(0),
  22         clear_enabled(false),
  23         clear_depth(1.0f),
  24         clear_stencil(0)
  25 { }
  26
  27 Sequence::Sequence(unsigned w, unsigned h, const FrameFormat &f):
  28         width(w),
  29         height(h),
  30         target_format(f),
  31         target_ms(0),
  32         clear_enabled(false),
  33         clear_depth(1.0f),
  34         clear_stencil(0)
  35 {
  36         if(target_format.empty())
  37                 throw invalid_argument("Sequence::Sequence");
  38
  39         FrameFormat postproc_fmt = target_format;
  40         postproc_fmt.set_samples(1);
  41         target[0] = new RenderTarget(width, height, postproc_fmt);
  42         target[1] = new RenderTarget(width, height, postproc_fmt);
  43
  44         if(target_format.get_samples()>1)
  45                 target_ms = new RenderTarget(width, height, target_format);
  46 }
  47
  48 Sequence::~Sequence()
  49 {
  50         for(PostProcStep &p: postproc)
  51                 if(p.owned)
  52                         delete p.postproc;
  53         delete target[0];
  54         delete target[1];
  55         delete target_ms;
  56 }
  57
  58 void Sequence::set_clear_enabled(bool c)
  59 {
  60         clear_enabled = c;
  61 }
  62
  63 void Sequence::set_clear_colors(const vector<Color> &c)
  64 {
  65         clear_enabled = true;
  66         clear_colors = c;
  67 }
  68
  69 void Sequence::set_clear_depth(float d)
  70 {
  71         clear_enabled = true;
  72         clear_depth = d;
  73 }
  74
  75 void Sequence::set_clear_stencil(int s)
  76 {
  77         clear_enabled = true;
  78         clear_stencil = s;
  79 }
  80
  81 Sequence::Step &Sequence::add_step(Tag tag, Renderable &r)
  82 {
  83         steps.push_back(Step(tag, &r));
  84         return steps.back();
  85 }
  86
  87 void Sequence::add_postprocessor(PostProcessor &pp)
  88 {
  89         add_postprocessor(&pp, false);
  90 }
  91
  92 void Sequence::add_postprocessor_owned(PostProcessor *pp)
  93 {
  94         add_postprocessor(pp, true);
  95 }
  96
  97 void Sequence::add_postprocessor(PostProcessor *pp, bool owned)
  98 {
  99         if(target_format.empty())
 100         {
 101                 if(owned)
 102                         delete pp;
 103                 throw invalid_operation("Sequence::add_postprocessor");
 104         }
 105         postproc.push_back(PostProcStep(pp, owned));
 106 }
 107
 108 void Sequence::setup_frame(Renderer &renderer)
 109 {
 110         for(const Step &s: steps)
 111                 if(Renderable *renderable = s.get_renderable())
 112                         renderable->setup_frame(renderer);
 113 }
 114
 115 void Sequence::finish_frame()
 116 {
 117         for(const Step &s: steps)
 118                 if(Renderable *renderable = s.get_renderable())
 119                         renderable->finish_frame();
 120 }
 121
 122 void Sequence::render(Renderer &renderer, Tag tag) const
 123 {
 124         if(tag.id)
 125                 return;
 126
 127         Renderer::Push _push(renderer);
 128
 129         const Framebuffer *out_fbo = renderer.get_framebuffer();
 130
 131         if(target[0])
 132                 renderer.set_framebuffer(&(target_ms ? target_ms : target[0])->get_framebuffer());
 133
 134         if(clear_enabled)
 135         {
 136                 const Framebuffer *target_fbo = renderer.get_framebuffer();
 137                 if(!target_fbo)
 138                         throw invalid_operation("Sequence::render");
 139
 140                 const FrameFormat &format = target_fbo->get_format();
 141                 ClearValue clear_values[7];
 142                 unsigned i = 0;
 143                 Color default_color = (clear_colors.empty() ? Color(0.0f, 0.0f, 0.0f, 0.0f) : clear_colors.front());
 144                 ClearValue *cv = clear_values;
 145                 for(FrameAttachment a: format)
 146                 {
 147                         if(get_attach_point(a)==get_attach_point(DEPTH_ATTACHMENT))
 148                                 cv->depth_stencil.depth = clear_depth;
 149                         else if(get_attach_point(a)==get_attach_point(STENCIL_ATTACHMENT))
 150                                 cv->depth_stencil.stencil = clear_stencil;
 151                         else
 152                                 cv->color = (i<clear_colors.size() ? clear_colors[i++] : default_color);
 153                         ++cv;
 154                 }
 155
 156                 renderer.clear(clear_values);
 157         }
 158
 159         for(const Step &s: steps)
 160         {
 161                 Renderer::Push _push2(renderer);
 162
 163                 renderer.set_depth_test(&s.get_depth_test());
 164                 renderer.set_stencil_test(&s.get_stencil_test());
 165                 renderer.set_blend(&s.get_blend());
 166
 167                 if (const Lighting *lighting = s.get_lighting())
 168                         renderer.add_shader_data(lighting->get_shader_data());
 169                 renderer.set_clipping(s.get_clipping());
 170
 171                 if(const Renderable *renderable = s.get_renderable())
 172                         renderer.render(*renderable, s.get_tag());
 173         }
 174
 175         if(target[0])
 176         {
 177                 if(target_ms)
 178                         renderer.resolve_multisample(target[0]->get_framebuffer());
 179
 180                 renderer.set_depth_test(0);
 181                 renderer.set_stencil_test(0);
 182                 renderer.set_blend(0);
 183
 184                 for(unsigned i=0; i<postproc.size(); ++i)
 185                 {
 186                         unsigned j = i%2;
 187                         renderer.set_framebuffer(i+1<postproc.size() ? &target[1-j]->get_framebuffer() : out_fbo);
 188                         const Texture2D &color = target[j]->get_target_texture(COLOR_ATTACHMENT);
 189                         const Texture2D &depth = target[j]->get_target_texture(DEPTH_ATTACHMENT);
 190                         postproc[i].postproc->render(renderer, color, depth);
 191                 }
 192         }
 193 }
 194
 195 void Sequence::set_debug_name(const string &name)
 196 {
 197 #ifdef DEBUG
 198         for(unsigned i=0; i<2; ++i)
 199                 if(target[i])
 200                         target[i]->set_debug_name(format("%s [RT:%d]", name, i));
 201         if(target_ms)
 202                 target_ms->set_debug_name(name+" [RT:ms]");
 203 #else
 204         (void)name;
 205 #endif
 206 }
 207
 208
 209 Sequence::Step::Step(Tag t, Renderable *r):
 210         tag(t),
 211         lighting(0),
 212         clipping(0),
 213         renderable(r)
 214 { }
 215
 216 void Sequence::Step::set_lighting(const Lighting *l)
 217 {
 218         lighting = l;
 219 }
 220
 221 void Sequence::Step::set_depth_test(const DepthTest &dt)
 222 {
 223         depth_test = dt;
 224 }
 225
 226 void Sequence::Step::set_stencil_test(const StencilTest &st)
 227 {
 228         stencil_test = st;
 229 }
 230
 231 void Sequence::Step::set_blend(const Blend &b)
 232 {
 233         blend = b;
 234 }
 235
 236 void Sequence::Step::set_clipping(const Clipping *c)
 237 {
 238         clipping = c;
 239 }
 240
 241 } // namespace GL
 242 } // namespace Msp