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