source/programdata.cpp

   1 #include "buffer.h"
   2 #include "color.h"
   3 #include "error.h"
   4 #include "matrix.h"
   5 #include "program.h"
   6 #include "programdata.h"
   7 #include "uniform.h"
   8 #include "uniformblock.h"
   9 #include "vector.h"
  10
  11 using namespace std;
  12
  13 namespace Msp {
  14 namespace GL {
  15
  16 ProgramData::ProgramData():
  17         last_block(0),
  18         buffer(0),
  19         dirty(0)
  20 { }
  21
  22 // Blocks are intentionally left uncopied
  23 ProgramData::ProgramData(const ProgramData &other):
  24         uniforms(other.uniforms),
  25         last_block(0),
  26         buffer(0),
  27         dirty(0)
  28 {
  29         for(vector<Uniform *>::iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
  30                 *i = (*i)->clone();
  31 }
  32
  33 ProgramData &ProgramData::operator=(const ProgramData &other)
  34 {
  35         for(vector<Uniform *>::iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
  36                 delete *i;
  37         uniforms.clear();
  38
  39         for(vector<Uniform *>::const_iterator i=other.uniforms.begin(); i!=other.uniforms.end(); ++i)
  40                 uniforms.push_back((*i)->clone());
  41
  42         for(BlockMap::iterator i=blocks.begin(); i!=blocks.end(); ++i)
  43                 delete i->second.block;
  44         programs.clear();
  45
  46         last_block = 0;
  47         buffer = 0;
  48         dirty = 0;
  49
  50         return *this;
  51 }
  52
  53 ProgramData::~ProgramData()
  54 {
  55         for(vector<Uniform *>::iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
  56                 delete *i;
  57         for(BlockMap::iterator i=blocks.begin(); i!=blocks.end(); ++i)
  58                 delete i->second.block;
  59         delete buffer;
  60 }
  61
  62 void ProgramData::uniform(const string &name, Uniform *uni)
  63 {
  64         SlotMap::iterator i = uniform_slots.find(name);
  65         if(i!=uniform_slots.end())
  66         {
  67                 Uniform *&slot = uniforms[i->second];
  68                 /* UniformBlock does not copy the uniforms, so existing default blocks
  69                 will be left with stale pointers.  This is not a problem as long as no
  70                 one stores pointers to the blocks and expects them to stay valid. */
  71                 delete slot;
  72                 slot = uni;
  73
  74                 if(i->second<MASK_BITS)
  75                         dirty |= 1<<i->second;
  76                 else  // Force a full update if the mask isn't wide enough
  77                         dirty = ALL_ONES;
  78         }
  79         else
  80         {
  81                 uniform_slots[name] = uniforms.size();
  82                 uniforms.push_back(uni);
  83                 dirty = ALL_ONES;
  84         }
  85 }
  86
  87 void ProgramData::uniform(const string &name, int v)
  88 {
  89         uniform(name, new Uniform1i(v));
  90 }
  91
  92 void ProgramData::uniform(const string &name, float v)
  93 {
  94         uniform(name, new Uniform1f(v));
  95 }
  96
  97 void ProgramData::uniform(const string &name, float v0, float v1)
  98 {
  99         float va[2] = { v0, v1 };
 100         uniform2(name, va);
 101 }
 102
 103 void ProgramData::uniform2(const string &name, const float *v)
 104 {
 105         uniform(name, new Uniform2f(v));
 106 }
 107
 108 void ProgramData::uniform(const string &name, float v0, float v1, float v2)
 109 {
 110         float va[3] = { v0, v1, v2 };
 111         uniform3(name, va);
 112 }
 113
 114 void ProgramData::uniform(const string &name, const Vector3 &v)
 115 {
 116         uniform(name, v.x, v.y, v.z);
 117 }
 118
 119 void ProgramData::uniform3(const string &name, const float *v)
 120 {
 121         uniform(name, new Uniform3f(v));
 122 }
 123
 124 void ProgramData::uniform(const string &name, float v0, float v1, float v2, float v3)
 125 {
 126         float va[4] = { v0, v1, v2, v3 };
 127         uniform4(name, va);
 128 }
 129
 130 void ProgramData::uniform(const string &name, const Vector4 &v)
 131 {
 132         uniform(name, v.x, v.y, v.z, v.w);
 133 }
 134
 135 void ProgramData::uniform(const string &name, const Color &c)
 136 {
 137         uniform(name, c.r, c.g, c.b, c.a);
 138 }
 139
 140 void ProgramData::uniform4(const string &name, const float *v)
 141 {
 142         uniform(name, new Uniform4f(v));
 143 }
 144
 145 void ProgramData::uniform_matrix2(const string &name, const float *v)
 146 {
 147         uniform(name, new UniformMatrix2x2f(v));
 148 }
 149
 150 void ProgramData::uniform_matrix3(const string &name, const float *v)
 151 {
 152         uniform(name, new UniformMatrix3x3f(v));
 153 }
 154
 155 void ProgramData::uniform(const string &name, const Matrix &m)
 156 {
 157         uniform_matrix4(name, m.data());
 158 }
 159
 160 void ProgramData::uniform_matrix4(const string &name, const float *v)
 161 {
 162         uniform(name, new UniformMatrix4x4f(v));
 163 }
 164
 165 void ProgramData::uniform1_array(const string &name, unsigned n, const float *v)
 166 {
 167         uniform(name, new UniformArray<Uniform1f>(n, v));
 168 }
 169
 170 void ProgramData::uniform2_array(const string &name, unsigned n, const float *v)
 171 {
 172         uniform(name, new UniformArray<Uniform2f>(n, v));
 173 }
 174
 175 void ProgramData::uniform3_array(const string &name, unsigned n, const float *v)
 176 {
 177         uniform(name, new UniformArray<Uniform3f>(n, v));
 178 }
 179
 180 void ProgramData::uniform4_array(const string &name, unsigned n, const float *v)
 181 {
 182         uniform(name, new UniformArray<Uniform4f>(n, v));
 183 }
 184
 185 void ProgramData::uniform_matrix4_array(const string &name, unsigned n, const float *v)
 186 {
 187         uniform(name, new UniformArray<UniformMatrix4x4f>(n, v));
 188 }
 189
 190 unsigned ProgramData::compute_slot_mask(const Program::UniformBlockInfo &block) const
 191 {
 192         unsigned mask = 0;
 193         for(vector<const Program::UniformInfo *>::const_iterator i=block.uniforms.begin(); i!=block.uniforms.end(); ++i)
 194         {
 195                 SlotMap::const_iterator j = uniform_slots.find((*i)->name);
 196                 if(j!=uniform_slots.end() && j->second<MASK_BITS)
 197                         mask |= 1<<j->second;
 198         }
 199
 200         return mask;
 201 }
 202
 203 void ProgramData::update_block(UniformBlock &block, const Program::UniformBlockInfo &info) const
 204 {
 205         for(vector<const Program::UniformInfo *>::const_iterator i=info.uniforms.begin(); i!=info.uniforms.end(); ++i)
 206         {
 207                 SlotMap::const_iterator j = uniform_slots.find((*i)->name);
 208                 if(j!=uniform_slots.end())
 209                         block.attach(**i, *uniforms[j->second]);
 210         }
 211 }
 212
 213 ProgramData::SharedBlock *ProgramData::get_shared_block(const Program::UniformBlockInfo &info) const
 214 {
 215         BlockMap::iterator i = blocks.find(info.layout_hash);
 216         if(i==blocks.end())
 217         {
 218                 unsigned used = compute_slot_mask(info);
 219                 if(!used)
 220                         return 0;
 221
 222                 UniformBlock *block;
 223                 if(info.bind_point>=0)
 224                 {
 225                         if(!buffer)
 226                         {
 227                                 buffer = new Buffer(UNIFORM_BUFFER);
 228                                 buffer->set_usage(STREAM_DRAW);
 229                         }
 230
 231                         block = new UniformBlock(info.data_size);
 232                         block->use_buffer(buffer, last_block);
 233                         last_block = block;
 234                 }
 235                 else
 236                         block = new UniformBlock;
 237
 238                 i = blocks.insert(BlockMap::value_type(info.layout_hash, SharedBlock(used, block))).first;
 239         }
 240
 241         return &i->second;
 242 }
 243
 244 void ProgramData::apply() const
 245 {
 246         const Program *prog = Program::current();
 247         if(!prog)
 248                 throw invalid_operation("ProgramData::apply");
 249
 250         Program::LayoutHash layout = prog->get_uniform_layout_hash();
 251         ProgramUniforms &pu = programs[layout];
 252
 253         if((dirty&pu.used)|pu.dirty)
 254         {
 255                 /* If the global dirty flag affects this program, add it to per-program
 256                 dirty flags and clear the global flag.  A previously unseen program will
 257                 always cause this to happen. */
 258                 if(dirty&pu.used)
 259                 {
 260                         Mask force_dirty = (dirty==ALL_ONES ? ALL_ONES : 0U);
 261                         for(BlockMap::iterator i=blocks.begin(); i!=blocks.end(); ++i)
 262                                 i->second.dirty |= (dirty&i->second.used) | force_dirty;
 263                         for(ProgramMap::iterator i=programs.begin(); i!=programs.end(); ++i)
 264                                 i->second.dirty |= (dirty&i->second.used) | force_dirty;
 265                         dirty = 0;
 266                 }
 267
 268                 const Program::UniformBlockMap &prog_blocks = prog->get_uniform_blocks();
 269
 270                 if(pu.dirty==ALL_ONES)
 271                 {
 272                         /* The set of uniforms has changed since this program was last used.
 273                         Regenerate the list of uniform blocks. */
 274                         pu.blocks.clear();
 275                         pu.blocks.reserve(prog_blocks.size());
 276
 277                         pu.used = 0;
 278                         for(Program::UniformBlockMap::const_iterator i=prog_blocks.begin(); i!=prog_blocks.end(); ++i)
 279                         {
 280                                 SharedBlock *shared = get_shared_block(i->second);
 281                                 if(shared)
 282                                 {
 283                                         if(shared->dirty==ALL_ONES)
 284                                                 shared->used = compute_slot_mask(i->second);
 285                                         pu.used |= shared->used;
 286                                 }
 287
 288                                 pu.blocks.push_back(ProgramBlock(i->second.bind_point, shared));
 289                         }
 290                 }
 291
 292                 // Update the contents of all dirty blocks.
 293                 bool buffered_blocks_updated = false;
 294                 std::vector<ProgramBlock>::iterator j = pu.blocks.begin();
 295                 for(Program::UniformBlockMap::const_iterator i=prog_blocks.begin(); i!=prog_blocks.end(); ++i, ++j)
 296                 {
 297                         if(!j->shared || !j->shared->dirty)
 298                                 continue;
 299
 300                         update_block(*j->block, i->second);
 301                         j->shared->dirty = 0;
 302                         buffered_blocks_updated |= (j->bind_point>=0);
 303                 }
 304
 305                 pu.dirty = 0;
 306
 307                 /* If any blocks stored in the buffer were updated, bind the buffer here
 308                 to avoid state thrashing. */
 309                 if(buffered_blocks_updated)
 310                         buffer->bind();
 311         }
 312
 313         for(vector<ProgramBlock>::iterator i=pu.blocks.begin(); i!=pu.blocks.end(); ++i)
 314                 if(i->block)
 315                         i->block->apply(i->bind_point);
 316 }
 317
 318
 319 ProgramData::SharedBlock::SharedBlock(unsigned u, UniformBlock *b):
 320         used(u),
 321         dirty(u),
 322         block(b)
 323 { }
 324
 325
 326 ProgramData::ProgramBlock::ProgramBlock():
 327         bind_point(-1),
 328         block(0),
 329         shared(0)
 330 { }
 331
 332 ProgramData::ProgramBlock::ProgramBlock(int p, SharedBlock *b):
 333         bind_point(p),
 334         block(b ? b->block : 0),
 335         shared(b)
 336 { }
 337
 338
 339 ProgramData::ProgramUniforms::ProgramUniforms():
 340         used(ALL_ONES),
 341         dirty(ALL_ONES)
 342 { }
 343
 344
 345 ProgramData::Loader::Loader(ProgramData &pd):
 346         DataFile::ObjectLoader<ProgramData>(pd)
 347 {
 348         add("uniform1i", &Loader::uniform1i);
 349         add("uniform1f", &Loader::uniform1f);
 350         add("uniform2f", &Loader::uniform2f);
 351         add("uniform3f", &Loader::uniform3f);
 352         add("uniform4f", &Loader::uniform4f);
 353 }
 354
 355 void ProgramData::Loader::uniform1i(const string &n, int v)
 356 {
 357         obj.uniform(n, v);
 358 }
 359
 360 void ProgramData::Loader::uniform1f(const string &n, float v)
 361 {
 362         obj.uniform(n, v);
 363 }
 364
 365 void ProgramData::Loader::uniform2f(const string &n, float v0, float v1)
 366 {
 367         obj.uniform(n, v0, v1);
 368 }
 369
 370 void ProgramData::Loader::uniform3f(const string &n, float v0, float v1, float v2)
 371 {
 372         obj.uniform(n, v0, v1, v2);
 373 }
 374
 375 void ProgramData::Loader::uniform4f(const string &n, float v0, float v1, float v2, float v3)
 376 {
 377         obj.uniform(n, v0, v1, v2, v3);
 378 }
 379
 380 } // namespace GL
 381 } // namespace Msp