4 #include <msp/core/hash.h>
5 #include <msp/core/maputils.h>
6 #include <msp/gl/extensions/arb_fragment_shader.h>
7 #include <msp/gl/extensions/arb_geometry_shader4.h>
8 #include <msp/gl/extensions/arb_shader_objects.h>
9 #include <msp/gl/extensions/arb_uniform_buffer_object.h>
10 #include <msp/gl/extensions/arb_vertex_shader.h>
11 #include <msp/gl/extensions/ext_gpu_shader4.h>
12 #include <msp/gl/extensions/nv_non_square_matrices.h>
13 #include <msp/io/print.h>
14 #include <msp/strings/format.h>
20 #include "resources.h"
22 #include "glsl/compiler.h"
34 Program::Program(const std::string &source)
39 mod.set_source(source);
46 Program::Program(const string &vert, const string &frag)
50 #pragma GCC diagnostic push
51 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
52 attach_shader_owned(new VertexShader(vert));
53 attach_shader_owned(new FragmentShader(frag));
54 #pragma GCC diagnostic pop
58 Program::Program(const Module &mod, const map<string, int> &spec_values)
61 add_stages(mod, spec_values);
67 static Require _req(ARB_shader_objects);
69 id = glCreateProgram();
76 for(vector<unsigned>::iterator i=shader_ids.begin(); i!=shader_ids.end(); ++i)
81 void Program::add_stages(const Module &mod, const map<string, int> &spec_values)
85 SL::Compiler compiler;
86 compiler.set_source(module->get_prepared_source(), "<module>");
87 compiler.specialize(spec_values);
88 compiler.compile(SL::Compiler::PROGRAM);
90 vector<SL::Stage::Type> stages = compiler.get_stages();
91 for(vector<SL::Stage::Type>::const_iterator i=stages.begin(); i!=stages.end(); ++i)
96 case SL::Stage::VERTEX:
97 { static Require _req(ARB_vertex_shader); }
98 type = GL_VERTEX_SHADER;
100 case SL::Stage::GEOMETRY:
101 { static Require _req(ARB_geometry_shader4); }
102 type = GL_GEOMETRY_SHADER;
104 case SL::Stage::FRAGMENT:
105 { static Require _req(ARB_fragment_shader); }
106 type = GL_FRAGMENT_SHADER;
109 throw invalid_operation("Program::add_stages");
112 unsigned stage_id = glCreateShader(type);
113 shader_ids.push_back(stage_id);
114 glAttachShader(id, stage_id);
116 string stage_src = compiler.get_stage_glsl(*i);
117 const char *src_ptr = stage_src.data();
118 int src_len = stage_src.size();
119 glShaderSource(stage_id, 1, &src_ptr, &src_len);
121 if(*i==SL::Stage::VERTEX)
123 const map<string, unsigned> &attribs = compiler.get_vertex_attributes();
124 for(map<string, unsigned>::const_iterator j=attribs.begin(); j!=attribs.end(); ++j)
125 glBindAttribLocation(id, j->second, j->first.c_str());
128 if(*i==SL::Stage::FRAGMENT && EXT_gpu_shader4)
130 const map<string, unsigned> &frag_outs = compiler.get_fragment_outputs();
131 for(map<string, unsigned>::const_iterator j=frag_outs.begin(); j!=frag_outs.end(); ++j)
132 glBindFragDataLocation(id, j->second, j->first.c_str());
137 #pragma GCC diagnostic push
138 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
139 void Program::attach_shader(Shader &shader)
141 unsigned shader_id = shader.steal_id();
143 throw invalid_argument("Program::attach_shader");
144 shader_ids.push_back(shader_id);
147 void Program::attach_shader_owned(Shader *shader)
149 attach_shader(*shader);
153 void Program::detach_shader(Shader &)
157 const vector<Shader *> &Program::get_attached_shaders() const
159 static vector<Shader *> dummy;
163 void Program::bind_attribute(unsigned index, const string &name)
165 static Require _req(ARB_vertex_shader);
166 glBindAttribLocation(id, index, name.c_str());
169 void Program::bind_attribute(VertexComponent comp, const string &name)
171 bind_attribute(get_component_type(comp), name);
174 void Program::bind_fragment_data(unsigned index, const string &name)
176 static Require _req(EXT_gpu_shader4);
177 glBindFragDataLocation(id, index, name.c_str());
179 #pragma GCC diagnostic pop
183 for(vector<unsigned>::const_iterator i=shader_ids.begin(); i!=shader_ids.end(); ++i)
186 bool compiled = get_shader_i(*i, GL_COMPILE_STATUS);
188 GLsizei info_log_len = get_shader_i(*i, GL_INFO_LOG_LENGTH);
189 string info_log(info_log_len+1, 0);
190 glGetShaderInfoLog(*i, info_log_len+1, &info_log_len, &info_log[0]);
191 info_log.erase(info_log_len);
192 info_log = module->get_source_map().translate_errors(info_log);
195 throw compile_error(info_log);
197 if(!info_log.empty())
198 IO::print("Shader compile info log:\n%s", info_log);
205 linked = get_program_i(id, GL_LINK_STATUS);
207 GLsizei info_log_len = get_program_i(id, GL_INFO_LOG_LENGTH);
208 string info_log(info_log_len+1, 0);
209 glGetProgramInfoLog(id, info_log_len+1, &info_log_len, &info_log[0]);
210 info_log.erase(info_log_len);
211 info_log = module->get_source_map().translate_errors(info_log);
214 throw compile_error(info_log);
216 if(!info_log.empty())
217 IO::print("Program link info log:\n%s", info_log);
223 for(UniformMap::const_iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
224 require_type(i->second.type);
225 for(AttributeMap::const_iterator i=attributes.begin(); i!=attributes.end(); ++i)
226 require_type(i->second.type);
229 void Program::require_type(GLenum t)
233 case GL_FLOAT_MAT2x3:
234 case GL_FLOAT_MAT2x4:
235 case GL_FLOAT_MAT3x2:
236 case GL_FLOAT_MAT3x4:
237 case GL_FLOAT_MAT4x2:
238 case GL_FLOAT_MAT4x3:
239 { static Require _req(NV_non_square_matrices); }
244 void Program::query_uniforms()
246 unsigned count = get_program_i(id, GL_ACTIVE_UNIFORMS);
247 vector<UniformInfo *> uniforms_by_index(count);
248 for(unsigned i=0; i<count; ++i)
254 glGetActiveUniform(id, i, sizeof(name), &len, &size, &type, name);
255 if(len && strncmp(name, "gl_", 3))
257 /* Some implementations report the first element of a uniform array,
258 others report just the name of the array itself. */
259 if(len>3 && !strcmp(name+len-3, "[0]"))
262 UniformInfo &info = uniforms[name];
266 info.array_stride = 0;
267 info.matrix_stride = 0;
269 uniforms_by_index[i] = &info;
273 if(ARB_uniform_buffer_object)
274 query_uniform_blocks(uniforms_by_index);
276 UniformBlockInfo &default_block = uniform_blocks[string()];
277 default_block.data_size = 0;
278 default_block.bind_point = -1;
280 for(UniformMap::iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
283 i->second.location = glGetUniformLocation(id, i->second.name.c_str());
284 i->second.block = &default_block;
285 default_block.uniforms.push_back(&i->second);
288 default_block.layout_hash = compute_layout_hash(default_block.uniforms);
290 string layout_descriptor;
291 for(UniformBlockMap::const_iterator i=uniform_blocks.begin(); i!=uniform_blocks.end(); ++i)
292 layout_descriptor += format("%d:%x\n", i->second.bind_point, i->second.layout_hash);
293 uniform_layout_hash = hash32(layout_descriptor);
296 void Program::query_uniform_blocks(const vector<UniformInfo *> &uniforms_by_index)
298 uniform_blocks.clear();
300 std::set<unsigned> used_bind_points;
301 unsigned count = get_program_i(id, GL_ACTIVE_UNIFORM_BLOCKS);
302 for(unsigned i=0; i<count; ++i)
306 glGetActiveUniformBlockName(id, i, sizeof(name), &len, name);
307 UniformBlockInfo &info = uniform_blocks[name];
311 glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_DATA_SIZE, &value);
312 info.data_size = value;
314 glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS, &value);
315 vector<int> indices(value);
316 glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES, &indices[0]);
317 for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
319 if(!uniforms_by_index[*j])
320 throw logic_error("Program::link");
321 info.uniforms.push_back(uniforms_by_index[*j]);
322 uniforms_by_index[*j]->block = &info;
325 vector<unsigned> indices2(indices.begin(), indices.end());
326 vector<int> values(indices.size());
327 glGetActiveUniformsiv(id, indices.size(), &indices2[0], GL_UNIFORM_OFFSET, &values[0]);
328 for(unsigned j=0; j<indices.size(); ++j)
329 uniforms_by_index[indices[j]]->location = values[j];
332 for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
333 if(uniforms_by_index[*j]->size>1)
334 indices2.push_back(*j);
335 if(!indices2.empty())
337 glGetActiveUniformsiv(id, indices2.size(), &indices2[0], GL_UNIFORM_ARRAY_STRIDE, &values[0]);
338 for(unsigned j=0; j<indices2.size(); ++j)
339 uniforms_by_index[indices2[j]]->array_stride = values[j];
343 for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
345 GLenum t = uniforms_by_index[*j]->type;
346 if(t==GL_FLOAT_MAT4 || t==GL_FLOAT_MAT3 || t==GL_FLOAT_MAT2 ||
347 t==GL_FLOAT_MAT2x3 || t==GL_FLOAT_MAT2x4 || t==GL_FLOAT_MAT3x2 ||
348 t==GL_FLOAT_MAT3x4 || t==GL_FLOAT_MAT4x2 || t==GL_FLOAT_MAT4x3)
349 indices2.push_back(*j);
351 if(!indices2.empty())
353 glGetActiveUniformsiv(id, indices2.size(), &indices2[0], GL_UNIFORM_MATRIX_STRIDE, &values[0]);
354 for(unsigned j=0; j<indices2.size(); ++j)
355 uniforms_by_index[indices2[j]]->matrix_stride = values[j];
358 sort(info.uniforms.begin(), info.uniforms.end(), uniform_location_compare);
359 info.layout_hash = compute_layout_hash(info.uniforms);
360 unsigned n_bindings = BufferRange::get_n_uniform_buffer_bindings();
361 info.bind_point = info.layout_hash%n_bindings;
362 while(used_bind_points.count(info.bind_point))
363 info.bind_point = (info.bind_point+1)%n_bindings;
364 glUniformBlockBinding(id, i, info.bind_point);
365 used_bind_points.insert(info.bind_point);
369 void Program::query_attributes()
371 unsigned count = get_program_i(id, GL_ACTIVE_ATTRIBUTES);
372 for(unsigned i=0; i<count; ++i)
378 glGetActiveAttrib(id, i, sizeof(name), &len, &size, &type, name);
379 if(len && strncmp(name, "gl_", 3))
381 if(len>3 && !strcmp(name+len-3, "[0]"))
384 AttributeInfo &info = attributes[name];
386 info.location = glGetAttribLocation(id, name);
393 Program::LayoutHash Program::compute_layout_hash(const vector<const UniformInfo *> &uniforms)
395 string layout_descriptor;
396 for(vector<const UniformInfo *>::const_iterator i = uniforms.begin(); i!=uniforms.end(); ++i)
397 layout_descriptor += format("%d:%s:%x:%d\n", (*i)->location, (*i)->name, (*i)->type, (*i)->size);
398 return hash32(layout_descriptor);
401 bool Program::uniform_location_compare(const UniformInfo *uni1, const UniformInfo *uni2)
403 return uni1->location<uni2->location;
406 string Program::get_info_log() const
408 GLsizei len = get_program_i(id, GL_INFO_LOG_LENGTH);
409 string log(len+1, 0);
410 glGetProgramInfoLog(id, len+1, &len, &log[0]);
415 const Program::UniformBlockInfo &Program::get_uniform_block_info(const string &name) const
417 return get_item(uniform_blocks, name);
420 const Program::UniformInfo &Program::get_uniform_info(const string &name) const
422 return get_item(uniforms, name);
425 int Program::get_uniform_location(const string &n) const
427 if(n[n.size()-1]==']')
428 throw invalid_argument("Program::get_uniform_location");
430 UniformMap::const_iterator i = uniforms.find(n);
431 if(i==uniforms.end())
434 return i->second.block->bind_point<0 ? i->second.location : -1;
437 const Program::AttributeInfo &Program::get_attribute_info(const string &name) const
439 return get_item(attributes, name);
442 int Program::get_attribute_location(const string &n) const
444 if(n[n.size()-1]==']')
445 throw invalid_argument("Program::get_attribute_location");
447 AttributeMap::const_iterator i = attributes.find(n);
448 return i!=attributes.end() ? i->second.location : -1;
451 void Program::bind() const
454 throw invalid_operation("Program::bind");
456 if(!set_current(this))
462 void Program::unbind()
471 Program::Loader::Loader(Program &p, Collection &c):
472 DataFile::CollectionObjectLoader<Program>(p, &c)
474 add("module", &Loader::module);
477 add("attribute", &Loader::attribute);
478 add("fragment_shader", &Loader::fragment_shader);
479 add("geometry_shader", &Loader::geometry_shader);
480 add("vertex_shader", &Loader::vertex_shader);
483 void Program::Loader::finish()
488 void Program::Loader::module(const string &n)
490 map<string, int> spec_values;
491 SpecializationLoader ldr(spec_values);
493 obj.add_stages(get_collection().get<Module>(n), spec_values);
496 #pragma GCC diagnostic push
497 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
498 void Program::Loader::attribute(unsigned i, const string &n)
500 obj.bind_attribute(i, n);
503 void Program::Loader::fragment_shader(const string &src)
505 obj.attach_shader_owned(new FragmentShader(src));
508 void Program::Loader::geometry_shader(const string &src)
510 obj.attach_shader_owned(new GeometryShader(src));
513 void Program::Loader::vertex_shader(const string &src)
515 obj.attach_shader_owned(new VertexShader(src));
517 #pragma GCC diagnostic pop
520 DataFile::Loader::ActionMap Program::SpecializationLoader::shared_actions;
522 Program::SpecializationLoader::SpecializationLoader(map<string, int> &sv):
525 set_actions(shared_actions);
528 void Program::SpecializationLoader::init_actions()
530 add("specialize", &SpecializationLoader::specialize_bool);
531 add("specialize", &SpecializationLoader::specialize_int);
534 void Program::SpecializationLoader::specialize_bool(const string &name, bool value)
536 spec_values[name] = value;
539 void Program::SpecializationLoader::specialize_int(const string &name, int value)
541 spec_values[name] = value;