source/render/sequence.cpp

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