source/programdata.cpp

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