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         uniform_slots(other.uniform_slots),
  25         uniforms(other.uniforms),
  26         last_block(0),
  27         buffer(0),
  28         dirty(0)
  29 {
  30         for(vector<Uniform *>::iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
  31                 *i = (*i)->clone();
  32 }
  33
  34 ProgramData &ProgramData::operator=(const ProgramData &other)
  35 {
  36         for(vector<Uniform *>::iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
  37                 delete *i;
  38         uniforms.clear();
  39
  40         uniform_slots = other.uniform_slots;
  41         for(vector<Uniform *>::const_iterator i=other.uniforms.begin(); i!=other.uniforms.end(); ++i)
  42                 uniforms.push_back((*i)->clone());
  43
  44         for(BlockMap::iterator i=blocks.begin(); i!=blocks.end(); ++i)
  45                 delete i->second.block;
  46         programs.clear();
  47
  48         last_block = 0;
  49         buffer = 0;
  50         dirty = 0;
  51
  52         return *this;
  53 }
  54
  55 ProgramData::~ProgramData()
  56 {
  57         for(vector<Uniform *>::iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
  58                 delete *i;
  59         for(BlockMap::iterator i=blocks.begin(); i!=blocks.end(); ++i)
  60                 delete i->second.block;
  61         delete buffer;
  62 }
  63
  64 void ProgramData::uniform(const string &name, Uniform *uni)
  65 {
  66         if(name[name.size()-1]==']')
  67                 throw invalid_argument("ProgramData::uniform");
  68
  69         SlotMap::iterator i = uniform_slots.find(name);
  70         if(i!=uniform_slots.end())
  71         {
  72                 Uniform *&slot = uniforms[i->second];
  73                 /* UniformBlock does not copy the uniforms, so existing default blocks
  74                 will be left with stale pointers.  This is not a problem as long as no
  75                 one stores pointers to the blocks and expects them to stay valid. */
  76                 delete slot;
  77                 slot = uni;
  78
  79                 if(i->second<MASK_BITS)
  80                         dirty |= 1<<i->second;
  81                 else  // Force a full update if the mask isn't wide enough
  82                         dirty = ALL_ONES;
  83         }
  84         else
  85         {
  86                 uniform_slots[name] = uniforms.size();
  87                 uniforms.push_back(uni);
  88                 dirty = ALL_ONES;
  89         }
  90 }
  91
  92 void ProgramData::uniform(const string &name, int v)
  93 {
  94         uniform(name, new Uniform1i(v));
  95 }
  96
  97 void ProgramData::uniform(const string &name, float v)
  98 {
  99         uniform(name, new Uniform1f(v));
 100 }
 101
 102 void ProgramData::uniform(const string &name, float v0, float v1)
 103 {
 104         float va[2] = { v0, v1 };
 105         uniform2(name, va);
 106 }
 107
 108 void ProgramData::uniform2(const string &name, const float *v)
 109 {
 110         uniform(name, new Uniform2f(v));
 111 }
 112
 113 void ProgramData::uniform(const string &name, float v0, float v1, float v2)
 114 {
 115         float va[3] = { v0, v1, v2 };
 116         uniform3(name, va);
 117 }
 118
 119 void ProgramData::uniform(const string &name, const Vector3 &v)
 120 {
 121         uniform(name, v.x, v.y, v.z);
 122 }
 123
 124 void ProgramData::uniform3(const string &name, const float *v)
 125 {
 126         uniform(name, new Uniform3f(v));
 127 }
 128
 129 void ProgramData::uniform(const string &name, float v0, float v1, float v2, float v3)
 130 {
 131         float va[4] = { v0, v1, v2, v3 };
 132         uniform4(name, va);
 133 }
 134
 135 void ProgramData::uniform(const string &name, const Vector4 &v)
 136 {
 137         uniform(name, v.x, v.y, v.z, v.w);
 138 }
 139
 140 void ProgramData::uniform(const string &name, const Color &c)
 141 {
 142         uniform(name, c.r, c.g, c.b, c.a);
 143 }
 144
 145 void ProgramData::uniform4(const string &name, const float *v)
 146 {
 147         uniform(name, new Uniform4f(v));
 148 }
 149
 150 void ProgramData::uniform(const string &name, const LinAl::Matrix<float, 2, 2> &m)
 151 {
 152         uniform_matrix2(name, &m(0, 0));
 153 }
 154
 155 void ProgramData::uniform_matrix2(const string &name, const float *v)
 156 {
 157         uniform(name, new UniformMatrix2x2f(v));
 158 }
 159
 160 void ProgramData::uniform(const string &name, const LinAl::Matrix<float, 3, 3> &m)
 161 {
 162         uniform_matrix3(name, &m(0, 0));
 163 }
 164
 165 void ProgramData::uniform_matrix3(const string &name, const float *v)
 166 {
 167         uniform(name, new UniformMatrix3x3f(v));
 168 }
 169
 170 void ProgramData::uniform(const string &name, const Matrix &m)
 171 {
 172         uniform_matrix4(name, m.data());
 173 }
 174
 175 void ProgramData::uniform_matrix4(const string &name, const float *v)
 176 {
 177         uniform(name, new UniformMatrix4x4f(v));
 178 }
 179
 180 void ProgramData::uniform1_array(const string &name, unsigned n, const float *v)
 181 {
 182         uniform(name, new UniformArray<Uniform1f>(n, v));
 183 }
 184
 185 void ProgramData::uniform2_array(const string &name, unsigned n, const float *v)
 186 {
 187         uniform(name, new UniformArray<Uniform2f>(n, v));
 188 }
 189
 190 void ProgramData::uniform3_array(const string &name, unsigned n, const float *v)
 191 {
 192         uniform(name, new UniformArray<Uniform3f>(n, v));
 193 }
 194
 195 void ProgramData::uniform4_array(const string &name, unsigned n, const float *v)
 196 {
 197         uniform(name, new UniformArray<Uniform4f>(n, v));
 198 }
 199
 200 void ProgramData::uniform_matrix4_array(const string &name, unsigned n, const float *v)
 201 {
 202         uniform(name, new UniformArray<UniformMatrix4x4f>(n, v));
 203 }
 204
 205 unsigned ProgramData::compute_slot_mask(const Program::UniformBlockInfo &block) const
 206 {
 207         unsigned mask = 0;
 208         for(vector<const Program::UniformInfo *>::const_iterator i=block.uniforms.begin(); i!=block.uniforms.end(); ++i)
 209         {
 210                 SlotMap::const_iterator j = uniform_slots.find((*i)->name);
 211                 if(j!=uniform_slots.end() && j->second<MASK_BITS)
 212                         mask |= 1<<j->second;
 213         }
 214
 215         return mask;
 216 }
 217
 218 void ProgramData::update_block(UniformBlock &block, const Program::UniformBlockInfo &info) const
 219 {
 220         for(vector<const Program::UniformInfo *>::const_iterator i=info.uniforms.begin(); i!=info.uniforms.end(); ++i)
 221         {
 222                 SlotMap::const_iterator j = uniform_slots.find((*i)->name);
 223                 if(j!=uniform_slots.end())
 224                         block.attach(**i, *uniforms[j->second]);
 225         }
 226 }
 227
 228 ProgramData::SharedBlock *ProgramData::get_shared_block(const Program::UniformBlockInfo &info) const
 229 {
 230         BlockMap::iterator i = blocks.find(info.layout_hash);
 231         if(i==blocks.end())
 232         {
 233                 unsigned used = compute_slot_mask(info);
 234                 if(!used)
 235                         return 0;
 236
 237                 UniformBlock *block;
 238                 if(info.bind_point>=0)
 239                 {
 240                         if(!buffer)
 241                         {
 242                                 buffer = new Buffer(UNIFORM_BUFFER);
 243                                 buffer->set_usage(STREAM_DRAW);
 244                         }
 245
 246                         block = new UniformBlock(info.data_size);
 247                         block->use_buffer(buffer, last_block);
 248                         last_block = block;
 249                 }
 250                 else
 251                         block = new UniformBlock;
 252
 253                 i = blocks.insert(BlockMap::value_type(info.layout_hash, SharedBlock(used, block))).first;
 254         }
 255
 256         return &i->second;
 257 }
 258
 259 void ProgramData::apply() const
 260 {
 261         const Program *prog = Program::current();
 262         if(!prog)
 263                 throw invalid_operation("ProgramData::apply");
 264
 265         Program::LayoutHash layout = prog->get_uniform_layout_hash();
 266         ProgramUniforms &pu = programs[layout];
 267
 268         Mask force_dirty = (dirty==ALL_ONES ? ALL_ONES : 0U);
 269         Mask affected = (dirty&pu.used) | force_dirty;
 270         if(affected|pu.dirty)
 271         {
 272                 /* If the global dirty flag affects this program, add it to per-program
 273                 dirty flags and clear the global flag.  A previously unseen program will
 274                 always cause this to happen. */
 275                 if(affected)
 276                 {
 277                         for(BlockMap::iterator i=blocks.begin(); i!=blocks.end(); ++i)
 278                                 i->second.dirty |= (dirty&i->second.used) | force_dirty;
 279                         for(ProgramMap::iterator i=programs.begin(); i!=programs.end(); ++i)
 280                                 i->second.dirty |= (dirty&i->second.used) | force_dirty;
 281                         dirty = 0;
 282                 }
 283
 284                 const Program::UniformBlockMap &prog_blocks = prog->get_uniform_blocks();
 285
 286                 if(pu.dirty==ALL_ONES)
 287                 {
 288                         /* The set of uniforms has changed since this program was last used.
 289                         Regenerate the list of uniform blocks. */
 290                         pu.blocks.clear();
 291                         pu.blocks.reserve(prog_blocks.size());
 292
 293                         pu.used = 0;
 294                         for(Program::UniformBlockMap::const_iterator i=prog_blocks.begin(); i!=prog_blocks.end(); ++i)
 295                         {
 296                                 SharedBlock *shared = get_shared_block(i->second);
 297                                 if(shared)
 298                                 {
 299                                         if(shared->dirty==ALL_ONES)
 300                                                 shared->used = compute_slot_mask(i->second);
 301                                         pu.used |= shared->used;
 302                                 }
 303
 304                                 pu.blocks.push_back(ProgramBlock(i->second.bind_point, shared));
 305                         }
 306                 }
 307
 308                 // Update the contents of all dirty blocks.
 309                 bool buffered_blocks_updated = false;
 310                 std::vector<ProgramBlock>::iterator j = pu.blocks.begin();
 311                 for(Program::UniformBlockMap::const_iterator i=prog_blocks.begin(); i!=prog_blocks.end(); ++i, ++j)
 312                 {
 313                         if(!j->shared || !j->shared->dirty)
 314                                 continue;
 315
 316                         update_block(*j->block, i->second);
 317                         j->shared->dirty = 0;
 318                         buffered_blocks_updated |= (j->bind_point>=0);
 319                 }
 320
 321                 pu.dirty = 0;
 322
 323                 /* If any blocks stored in the buffer were updated, bind the buffer here
 324                 to avoid state thrashing. */
 325                 if(buffered_blocks_updated)
 326                         buffer->bind();
 327         }
 328
 329         for(vector<ProgramBlock>::iterator i=pu.blocks.begin(); i!=pu.blocks.end(); ++i)
 330                 if(i->block)
 331                         i->block->apply(i->bind_point);
 332 }
 333
 334
 335 ProgramData::SharedBlock::SharedBlock(unsigned u, UniformBlock *b):
 336         used(u),
 337         dirty(u),
 338         block(b)
 339 { }
 340
 341
 342 ProgramData::ProgramBlock::ProgramBlock():
 343         bind_point(-1),
 344         block(0),
 345         shared(0)
 346 { }
 347
 348 ProgramData::ProgramBlock::ProgramBlock(int p, SharedBlock *b):
 349         bind_point(p),
 350         block(b ? b->block : 0),
 351         shared(b)
 352 { }
 353
 354
 355 ProgramData::ProgramUniforms::ProgramUniforms():
 356         used(ALL_ONES),
 357         dirty(ALL_ONES)
 358 { }
 359
 360
 361 ProgramData::Loader::Loader(ProgramData &pd):
 362         DataFile::ObjectLoader<ProgramData>(pd)
 363 {
 364         add("uniform1i", &Loader::uniform1i);
 365         add("uniform1f", &Loader::uniform1f);
 366         add("uniform2f", &Loader::uniform2f);
 367         add("uniform3f", &Loader::uniform3f);
 368         add("uniform4f", &Loader::uniform4f);
 369 }
 370
 371 void ProgramData::Loader::uniform1i(const string &n, int v)
 372 {
 373         obj.uniform(n, v);
 374 }
 375
 376 void ProgramData::Loader::uniform1f(const string &n, float v)
 377 {
 378         obj.uniform(n, v);
 379 }
 380
 381 void ProgramData::Loader::uniform2f(const string &n, float v0, float v1)
 382 {
 383         obj.uniform(n, v0, v1);
 384 }
 385
 386 void ProgramData::Loader::uniform3f(const string &n, float v0, float v1, float v2)
 387 {
 388         obj.uniform(n, v0, v1, v2);
 389 }
 390
 391 void ProgramData::Loader::uniform4f(const string &n, float v0, float v1, float v2, float v3)
 392 {
 393         obj.uniform(n, v0, v1, v2, v3);
 394 }
 395
 396 } // namespace GL
 397 } // namespace Msp