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 const 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(OwnedObject &o: owned_data)
  37                 o.delete_func(o.pointer);
  38         delete target[0];
  39         delete target[1];
  40         delete target_ms;
  41 }
  42
  43 void Sequence::set_clear_enabled(bool c)
  44 {
  45         clear_enabled = c;
  46 }
  47
  48 void Sequence::set_clear_colors(const vector<Color> &c)
  49 {
  50         clear_enabled = true;
  51         clear_colors = c;
  52 }
  53
  54 void Sequence::set_clear_depth(float d)
  55 {
  56         clear_enabled = true;
  57         clear_depth = d;
  58 }
  59
  60 void Sequence::set_clear_stencil(int s)
  61 {
  62         clear_enabled = true;
  63         clear_stencil = s;
  64 }
  65
  66 Sequence::Step &Sequence::add_step(Tag tag, Renderable &r)
  67 {
  68         steps.emplace_back(tag, &r);
  69         return steps.back();
  70 }
  71
  72 void Sequence::add_postprocessor(PostProcessor &pp)
  73 {
  74         if(target_format.empty())
  75                 throw invalid_operation("Sequence::add_postprocessor");
  76         postproc.push_back(&pp);
  77 }
  78
  79 void Sequence::setup_frame(Renderer &renderer)
  80 {
  81         for(const Step &s: steps)
  82                 if(Renderable *renderable = s.get_renderable())
  83                         renderable->setup_frame(renderer);
  84 }
  85
  86 void Sequence::finish_frame()
  87 {
  88         for(const Step &s: steps)
  89                 if(Renderable *renderable = s.get_renderable())
  90                         renderable->finish_frame();
  91 }
  92
  93 void Sequence::render(Renderer &renderer, Tag tag) const
  94 {
  95         if(tag.id && tag!=noclear_tag)
  96                 return;
  97
  98         Renderer::Push _push(renderer);
  99
 100         const Framebuffer *out_fbo = renderer.get_framebuffer();
 101
 102         if(target[0])
 103                 renderer.set_framebuffer(&(target_ms ? target_ms : target[0])->get_framebuffer());
 104
 105         if(clear_enabled && tag!=noclear_tag)
 106         {
 107                 const Framebuffer *target_fbo = renderer.get_framebuffer();
 108                 if(!target_fbo)
 109                         throw invalid_operation("Sequence::render");
 110
 111                 const FrameFormat &format = target_fbo->get_format();
 112                 ClearValue clear_values[FrameFormat::MAX_ATTACHMENTS];
 113                 unsigned i = 0;
 114                 Color default_color = (clear_colors.empty() ? Color(0.0f, 0.0f, 0.0f, 0.0f) : clear_colors.front());
 115                 ClearValue *cv = clear_values;
 116                 for(FrameAttachment a: format)
 117                 {
 118                         if(get_attach_point(a)==get_attach_point(DEPTH_ATTACHMENT))
 119                                 cv->depth_stencil.depth = clear_depth;
 120                         else if(get_attach_point(a)==get_attach_point(STENCIL_ATTACHMENT))
 121                                 cv->depth_stencil.stencil = clear_stencil;
 122                         else
 123                                 cv->color = (i<clear_colors.size() ? clear_colors[i++] : default_color);
 124                         ++cv;
 125                 }
 126
 127                 renderer.clear(clear_values);
 128         }
 129
 130         for(const Step &s: steps)
 131         {
 132                 Renderer::Push _push2(renderer);
 133
 134                 renderer.set_depth_test(&s.get_depth_test());
 135                 renderer.set_stencil_test(&s.get_stencil_test());
 136
 137                 if(const Lighting *lighting = s.get_lighting())
 138                         renderer.add_shader_data(lighting->get_shader_data());
 139
 140                 if(const Renderable *renderable = s.get_renderable())
 141                         renderable->render(renderer, s.get_tag());
 142         }
 143
 144         if(target[0])
 145         {
 146                 RenderTarget *source = target[0];
 147                 if(target_ms)
 148                 {
 149                         renderer.resolve_multisample();
 150                         source = target_ms;
 151                 }
 152
 153                 renderer.set_depth_test(0);
 154                 renderer.set_stencil_test(0);
 155                 renderer.set_blend(0);
 156
 157                 for(unsigned i=0; i<postproc.size(); ++i)
 158                 {
 159                         unsigned j = 1-i%2;
 160                         renderer.set_framebuffer(i+1<postproc.size() ? &target[j]->get_framebuffer() : out_fbo);
 161                         const Texture2D &color = source->get_target_texture(COLOR_ATTACHMENT);
 162                         const Texture2D &depth = source->get_target_texture(DEPTH_ATTACHMENT);
 163                         postproc[i]->render(renderer, color, depth);
 164                         source = target[j];
 165                 }
 166         }
 167 }
 168
 169 void Sequence::set_debug_name(const string &name)
 170 {
 171 #ifdef DEBUG
 172         for(unsigned i=0; i<2; ++i)
 173                 if(target[i])
 174                         target[i]->set_debug_name(format("%s [RT:%d]", name, i));
 175         if(target_ms)
 176                 target_ms->set_debug_name(name+" [RT:ms]");
 177 #else
 178         (void)name;
 179 #endif
 180 }
 181
 182
 183 Sequence::Step::Step(Tag t, Renderable *r):
 184         tag(t),
 185         lighting(0),
 186         renderable(r)
 187 { }
 188
 189 void Sequence::Step::set_lighting(const Lighting *l)
 190 {
 191         lighting = l;
 192 }
 193
 194 void Sequence::Step::set_depth_test(const DepthTest &dt)
 195 {
 196         depth_test = dt;
 197 }
 198
 199 void Sequence::Step::set_stencil_test(const StencilTest &st)
 200 {
 201         stencil_test = st;
 202 }
 203
 204 } // namespace GL
 205 } // namespace Msp