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=stage_ids.begin(); i!=stage_ids.end(); ++i)
81 unsigned Program::add_stage(GLenum type)
85 case GL_VERTEX_SHADER: { static Require _req(ARB_vertex_shader); } break;
86 case GL_GEOMETRY_SHADER: { static Require _req(ARB_geometry_shader4); } break;
87 case GL_FRAGMENT_SHADER: { static Require _req(ARB_fragment_shader); } break;
88 default: throw invalid_argument("Program::add_stage");
91 unsigned stage_id = glCreateShader(type);
92 stage_ids.push_back(stage_id);
93 glAttachShader(id, stage_id);
98 void Program::add_stages(const Module &mod, const map<string, int> &spec_values)
102 SL::Compiler compiler;
103 compiler.set_source(module->get_prepared_source(), "<module>");
104 compiler.specialize(spec_values);
105 compiler.compile(SL::Compiler::PROGRAM);
107 string diagnostics = compiler.get_diagnostics();
108 if(!diagnostics.empty())
109 IO::print("Program diagnostics:\n%s\n", diagnostics);
112 vector<SL::Stage::Type> stages = compiler.get_stages();
113 for(vector<SL::Stage::Type>::const_iterator i=stages.begin(); i!=stages.end(); ++i)
115 unsigned stage_id = 0;
118 case SL::Stage::VERTEX: stage_id = add_stage(GL_VERTEX_SHADER); break;
119 case SL::Stage::GEOMETRY: stage_id = add_stage(GL_GEOMETRY_SHADER); break;
120 case SL::Stage::FRAGMENT: stage_id = add_stage(GL_FRAGMENT_SHADER); break;
121 default: throw invalid_operation("Program::add_glsl_stages");
124 string stage_src = compiler.get_stage_glsl(*i);
125 const char *src_ptr = stage_src.data();
126 int src_len = stage_src.size();
127 glShaderSource(stage_id, 1, &src_ptr, &src_len);
129 if(*i==SL::Stage::VERTEX)
131 const map<string, unsigned> &attribs = compiler.get_vertex_attributes();
132 for(map<string, unsigned>::const_iterator j=attribs.begin(); j!=attribs.end(); ++j)
133 glBindAttribLocation(id, j->second, j->first.c_str());
136 if(*i==SL::Stage::FRAGMENT && EXT_gpu_shader4)
138 const map<string, unsigned> &frag_outs = compiler.get_fragment_outputs();
139 for(map<string, unsigned>::const_iterator j=frag_outs.begin(); j!=frag_outs.end(); ++j)
140 glBindFragDataLocation(id, j->second, j->first.c_str());
143 compile_stage(stage_id);
147 void Program::compile_stage(unsigned stage_id)
149 glCompileShader(stage_id);
150 bool compiled = get_shader_i(stage_id, GL_COMPILE_STATUS);
152 GLsizei info_log_len = get_shader_i(stage_id, GL_INFO_LOG_LENGTH);
153 string info_log(info_log_len+1, 0);
154 glGetShaderInfoLog(stage_id, info_log_len+1, &info_log_len, &info_log[0]);
155 info_log.erase(info_log_len);
157 info_log = module->get_source_map().translate_errors(info_log);
160 throw compile_error(info_log);
162 if(!info_log.empty())
163 IO::print("Shader compile info log:\n%s", info_log);
167 #pragma GCC diagnostic push
168 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
169 void Program::attach_shader(Shader &shader)
171 unsigned shader_id = shader.steal_id();
173 throw invalid_argument("Program::attach_shader");
174 stage_ids.push_back(shader_id);
175 compile_stage(shader_id);
178 void Program::attach_shader_owned(Shader *shader)
180 attach_shader(*shader);
184 void Program::detach_shader(Shader &)
188 const vector<Shader *> &Program::get_attached_shaders() const
190 static vector<Shader *> dummy;
194 void Program::bind_attribute(unsigned index, const string &name)
196 static Require _req(ARB_vertex_shader);
197 glBindAttribLocation(id, index, name.c_str());
200 void Program::bind_attribute(VertexAttribute attr, const string &name)
202 bind_attribute(get_attribute_semantic(attr), name);
205 void Program::bind_fragment_data(unsigned index, const string &name)
207 static Require _req(EXT_gpu_shader4);
208 glBindFragDataLocation(id, index, name.c_str());
210 #pragma GCC diagnostic pop
217 linked = get_program_i(id, GL_LINK_STATUS);
219 GLsizei info_log_len = get_program_i(id, GL_INFO_LOG_LENGTH);
220 string info_log(info_log_len+1, 0);
221 glGetProgramInfoLog(id, info_log_len+1, &info_log_len, &info_log[0]);
222 info_log.erase(info_log_len);
223 info_log = module->get_source_map().translate_errors(info_log);
226 throw compile_error(info_log);
228 if(!info_log.empty())
229 IO::print("Program link info log:\n%s", info_log);
235 for(UniformMap::const_iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
236 require_type(i->second.type);
237 for(AttributeMap::const_iterator i=attributes.begin(); i!=attributes.end(); ++i)
238 require_type(i->second.type);
241 void Program::require_type(GLenum t)
245 case GL_FLOAT_MAT2x3:
246 case GL_FLOAT_MAT2x4:
247 case GL_FLOAT_MAT3x2:
248 case GL_FLOAT_MAT3x4:
249 case GL_FLOAT_MAT4x2:
250 case GL_FLOAT_MAT4x3:
251 { static Require _req(NV_non_square_matrices); }
256 void Program::query_uniforms()
258 unsigned count = get_program_i(id, GL_ACTIVE_UNIFORMS);
259 vector<UniformInfo *> uniforms_by_index(count);
260 for(unsigned i=0; i<count; ++i)
266 glGetActiveUniform(id, i, sizeof(name), &len, &size, &type, name);
267 if(len && strncmp(name, "gl_", 3))
269 /* Some implementations report the first element of a uniform array,
270 others report just the name of the array itself. */
271 if(len>3 && !strcmp(name+len-3, "[0]"))
274 UniformInfo &info = uniforms[name];
278 info.array_stride = 0;
279 info.matrix_stride = 0;
281 uniforms_by_index[i] = &info;
285 if(ARB_uniform_buffer_object)
286 query_uniform_blocks(uniforms_by_index);
288 UniformBlockInfo &default_block = uniform_blocks[string()];
289 default_block.data_size = 0;
290 default_block.bind_point = -1;
292 for(UniformMap::iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
295 i->second.location = glGetUniformLocation(id, i->second.name.c_str());
296 i->second.block = &default_block;
297 default_block.uniforms.push_back(&i->second);
300 default_block.layout_hash = compute_layout_hash(default_block.uniforms);
302 string layout_descriptor;
303 for(UniformBlockMap::const_iterator i=uniform_blocks.begin(); i!=uniform_blocks.end(); ++i)
304 layout_descriptor += format("%d:%x\n", i->second.bind_point, i->second.layout_hash);
305 uniform_layout_hash = hash32(layout_descriptor);
308 void Program::query_uniform_blocks(const vector<UniformInfo *> &uniforms_by_index)
310 uniform_blocks.clear();
312 std::set<unsigned> used_bind_points;
313 unsigned count = get_program_i(id, GL_ACTIVE_UNIFORM_BLOCKS);
314 for(unsigned i=0; i<count; ++i)
318 glGetActiveUniformBlockName(id, i, sizeof(name), &len, name);
319 UniformBlockInfo &info = uniform_blocks[name];
323 glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_DATA_SIZE, &value);
324 info.data_size = value;
326 glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS, &value);
327 vector<int> indices(value);
328 glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES, &indices[0]);
329 for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
331 if(!uniforms_by_index[*j])
332 throw logic_error("Program::link");
333 info.uniforms.push_back(uniforms_by_index[*j]);
334 uniforms_by_index[*j]->block = &info;
337 vector<unsigned> indices2(indices.begin(), indices.end());
338 vector<int> values(indices.size());
339 glGetActiveUniformsiv(id, indices.size(), &indices2[0], GL_UNIFORM_OFFSET, &values[0]);
340 for(unsigned j=0; j<indices.size(); ++j)
341 uniforms_by_index[indices[j]]->location = values[j];
344 for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
345 if(uniforms_by_index[*j]->size>1)
346 indices2.push_back(*j);
347 if(!indices2.empty())
349 glGetActiveUniformsiv(id, indices2.size(), &indices2[0], GL_UNIFORM_ARRAY_STRIDE, &values[0]);
350 for(unsigned j=0; j<indices2.size(); ++j)
351 uniforms_by_index[indices2[j]]->array_stride = values[j];
355 for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
357 GLenum t = uniforms_by_index[*j]->type;
358 if(t==GL_FLOAT_MAT4 || t==GL_FLOAT_MAT3 || t==GL_FLOAT_MAT2 ||
359 t==GL_FLOAT_MAT2x3 || t==GL_FLOAT_MAT2x4 || t==GL_FLOAT_MAT3x2 ||
360 t==GL_FLOAT_MAT3x4 || t==GL_FLOAT_MAT4x2 || t==GL_FLOAT_MAT4x3)
361 indices2.push_back(*j);
363 if(!indices2.empty())
365 glGetActiveUniformsiv(id, indices2.size(), &indices2[0], GL_UNIFORM_MATRIX_STRIDE, &values[0]);
366 for(unsigned j=0; j<indices2.size(); ++j)
367 uniforms_by_index[indices2[j]]->matrix_stride = values[j];
370 sort(info.uniforms.begin(), info.uniforms.end(), uniform_location_compare);
371 info.layout_hash = compute_layout_hash(info.uniforms);
372 unsigned n_bindings = BufferRange::get_n_uniform_buffer_bindings();
373 info.bind_point = info.layout_hash%n_bindings;
374 while(used_bind_points.count(info.bind_point))
375 info.bind_point = (info.bind_point+1)%n_bindings;
376 glUniformBlockBinding(id, i, info.bind_point);
377 used_bind_points.insert(info.bind_point);
381 void Program::query_attributes()
383 unsigned count = get_program_i(id, GL_ACTIVE_ATTRIBUTES);
384 for(unsigned i=0; i<count; ++i)
390 glGetActiveAttrib(id, i, sizeof(name), &len, &size, &type, name);
391 if(len && strncmp(name, "gl_", 3))
393 if(len>3 && !strcmp(name+len-3, "[0]"))
396 AttributeInfo &info = attributes[name];
398 info.location = glGetAttribLocation(id, name);
405 Program::LayoutHash Program::compute_layout_hash(const vector<const UniformInfo *> &uniforms)
407 string layout_descriptor;
408 for(vector<const UniformInfo *>::const_iterator i = uniforms.begin(); i!=uniforms.end(); ++i)
409 layout_descriptor += format("%d:%s:%x:%d\n", (*i)->location, (*i)->name, (*i)->type, (*i)->size);
410 return hash32(layout_descriptor);
413 bool Program::uniform_location_compare(const UniformInfo *uni1, const UniformInfo *uni2)
415 return uni1->location<uni2->location;
418 string Program::get_info_log() const
420 GLsizei len = get_program_i(id, GL_INFO_LOG_LENGTH);
421 string log(len+1, 0);
422 glGetProgramInfoLog(id, len+1, &len, &log[0]);
427 const Program::UniformBlockInfo &Program::get_uniform_block_info(const string &name) const
429 return get_item(uniform_blocks, name);
432 const Program::UniformInfo &Program::get_uniform_info(const string &name) const
434 return get_item(uniforms, name);
437 int Program::get_uniform_location(const string &n) const
439 if(n[n.size()-1]==']')
440 throw invalid_argument("Program::get_uniform_location");
442 UniformMap::const_iterator i = uniforms.find(n);
443 if(i==uniforms.end())
446 return i->second.block->bind_point<0 ? i->second.location : -1;
449 const Program::AttributeInfo &Program::get_attribute_info(const string &name) const
451 return get_item(attributes, name);
454 int Program::get_attribute_location(const string &n) const
456 if(n[n.size()-1]==']')
457 throw invalid_argument("Program::get_attribute_location");
459 AttributeMap::const_iterator i = attributes.find(n);
460 return i!=attributes.end() ? i->second.location : -1;
463 void Program::bind() const
466 throw invalid_operation("Program::bind");
468 if(!set_current(this))
474 void Program::unbind()
483 Program::Loader::Loader(Program &p, Collection &c):
484 DataFile::CollectionObjectLoader<Program>(p, &c)
486 add("module", &Loader::module);
489 add("attribute", &Loader::attribute);
490 add("fragment_shader", &Loader::fragment_shader);
491 add("geometry_shader", &Loader::geometry_shader);
492 add("vertex_shader", &Loader::vertex_shader);
495 void Program::Loader::finish()
500 void Program::Loader::module(const string &n)
502 map<string, int> spec_values;
503 SpecializationLoader ldr(spec_values);
505 obj.add_stages(get_collection().get<Module>(n), spec_values);
508 #pragma GCC diagnostic push
509 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
510 void Program::Loader::attribute(unsigned i, const string &n)
512 obj.bind_attribute(i, n);
515 void Program::Loader::fragment_shader(const string &src)
517 obj.attach_shader_owned(new FragmentShader(src));
520 void Program::Loader::geometry_shader(const string &src)
522 obj.attach_shader_owned(new GeometryShader(src));
525 void Program::Loader::vertex_shader(const string &src)
527 obj.attach_shader_owned(new VertexShader(src));
529 #pragma GCC diagnostic pop
532 DataFile::Loader::ActionMap Program::SpecializationLoader::shared_actions;
534 Program::SpecializationLoader::SpecializationLoader(map<string, int> &sv):
537 set_actions(shared_actions);
540 void Program::SpecializationLoader::init_actions()
542 add("specialize", &SpecializationLoader::specialize_bool);
543 add("specialize", &SpecializationLoader::specialize_int);
546 void Program::SpecializationLoader::specialize_bool(const string &name, bool value)
548 spec_values[name] = value;
551 void Program::SpecializationLoader::specialize_int(const string &name, int value)
553 spec_values[name] = value;