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 void Program::add_stages(const Module &mod, const map<string, int> &spec_values)
83 switch(mod.get_format())
85 case Module::GLSL: return add_glsl_stages(static_cast<const GlslModule &>(mod), spec_values);
86 default: throw invalid_argument("Program::add_stages");
90 unsigned Program::add_stage(GLenum type)
94 case GL_VERTEX_SHADER: { static Require _req(ARB_vertex_shader); } break;
95 case GL_GEOMETRY_SHADER: { static Require _req(ARB_geometry_shader4); } break;
96 case GL_FRAGMENT_SHADER: { static Require _req(ARB_fragment_shader); } break;
97 default: throw invalid_argument("Program::add_stage");
100 unsigned stage_id = glCreateShader(type);
101 stage_ids.push_back(stage_id);
102 glAttachShader(id, stage_id);
107 void Program::add_glsl_stages(const GlslModule &mod, const map<string, int> &spec_values)
111 SL::Compiler compiler;
112 compiler.set_source(mod.get_prepared_source(), "<module>");
113 compiler.specialize(spec_values);
114 compiler.compile(SL::Compiler::PROGRAM);
116 string diagnostics = compiler.get_diagnostics();
117 if(!diagnostics.empty())
118 IO::print("Program diagnostics:\n%s\n", diagnostics);
121 vector<SL::Stage::Type> stages = compiler.get_stages();
122 for(vector<SL::Stage::Type>::const_iterator i=stages.begin(); i!=stages.end(); ++i)
124 unsigned stage_id = 0;
127 case SL::Stage::VERTEX: stage_id = add_stage(GL_VERTEX_SHADER); break;
128 case SL::Stage::GEOMETRY: stage_id = add_stage(GL_GEOMETRY_SHADER); break;
129 case SL::Stage::FRAGMENT: stage_id = add_stage(GL_FRAGMENT_SHADER); break;
130 default: throw invalid_operation("Program::add_glsl_stages");
133 string stage_src = compiler.get_stage_glsl(*i);
134 const char *src_ptr = stage_src.data();
135 int src_len = stage_src.size();
136 glShaderSource(stage_id, 1, &src_ptr, &src_len);
138 if(*i==SL::Stage::VERTEX)
140 const map<string, unsigned> &attribs = compiler.get_vertex_attributes();
141 for(map<string, unsigned>::const_iterator j=attribs.begin(); j!=attribs.end(); ++j)
142 glBindAttribLocation(id, j->second, j->first.c_str());
145 if(*i==SL::Stage::FRAGMENT && EXT_gpu_shader4)
147 const map<string, unsigned> &frag_outs = compiler.get_fragment_outputs();
148 for(map<string, unsigned>::const_iterator j=frag_outs.begin(); j!=frag_outs.end(); ++j)
149 glBindFragDataLocation(id, j->second, j->first.c_str());
152 compile_glsl_stage(stage_id);
156 void Program::compile_glsl_stage(unsigned stage_id)
158 glCompileShader(stage_id);
159 bool compiled = get_shader_i(stage_id, GL_COMPILE_STATUS);
161 GLsizei info_log_len = get_shader_i(stage_id, GL_INFO_LOG_LENGTH);
162 string info_log(info_log_len+1, 0);
163 glGetShaderInfoLog(stage_id, info_log_len+1, &info_log_len, &info_log[0]);
164 info_log.erase(info_log_len);
165 if(module && module->get_format()==Module::GLSL)
166 info_log = static_cast<const GlslModule *>(module)->get_source_map().translate_errors(info_log);
169 throw compile_error(info_log);
171 if(!info_log.empty())
172 IO::print("Shader compile info log:\n%s", info_log);
176 #pragma GCC diagnostic push
177 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
178 void Program::attach_shader(Shader &shader)
180 unsigned shader_id = shader.steal_id();
182 throw invalid_argument("Program::attach_shader");
183 stage_ids.push_back(shader_id);
184 compile_glsl_stage(shader_id);
187 void Program::attach_shader_owned(Shader *shader)
189 attach_shader(*shader);
193 void Program::detach_shader(Shader &)
197 const vector<Shader *> &Program::get_attached_shaders() const
199 static vector<Shader *> dummy;
203 void Program::bind_attribute(unsigned index, const string &name)
205 static Require _req(ARB_vertex_shader);
206 glBindAttribLocation(id, index, name.c_str());
209 void Program::bind_attribute(VertexAttribute attr, const string &name)
211 bind_attribute(get_attribute_semantic(attr), name);
214 void Program::bind_fragment_data(unsigned index, const string &name)
216 static Require _req(EXT_gpu_shader4);
217 glBindFragDataLocation(id, index, name.c_str());
219 #pragma GCC diagnostic pop
226 linked = get_program_i(id, GL_LINK_STATUS);
228 GLsizei info_log_len = get_program_i(id, GL_INFO_LOG_LENGTH);
229 string info_log(info_log_len+1, 0);
230 glGetProgramInfoLog(id, info_log_len+1, &info_log_len, &info_log[0]);
231 info_log.erase(info_log_len);
232 if(module && module->get_format()==Module::GLSL)
233 info_log = static_cast<const GlslModule *>(module)->get_source_map().translate_errors(info_log);
236 throw compile_error(info_log);
238 if(!info_log.empty())
239 IO::print("Program link info log:\n%s", info_log);
245 for(UniformMap::const_iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
246 require_type(i->second.type);
247 for(AttributeMap::const_iterator i=attributes.begin(); i!=attributes.end(); ++i)
248 require_type(i->second.type);
251 void Program::require_type(GLenum t)
255 case GL_FLOAT_MAT2x3:
256 case GL_FLOAT_MAT2x4:
257 case GL_FLOAT_MAT3x2:
258 case GL_FLOAT_MAT3x4:
259 case GL_FLOAT_MAT4x2:
260 case GL_FLOAT_MAT4x3:
261 { static Require _req(NV_non_square_matrices); }
266 void Program::query_uniforms()
268 unsigned count = get_program_i(id, GL_ACTIVE_UNIFORMS);
269 vector<UniformInfo *> uniforms_by_index(count);
270 for(unsigned i=0; i<count; ++i)
276 glGetActiveUniform(id, i, sizeof(name), &len, &size, &type, name);
277 if(len && strncmp(name, "gl_", 3))
279 /* Some implementations report the first element of a uniform array,
280 others report just the name of the array itself. */
281 if(len>3 && !strcmp(name+len-3, "[0]"))
284 UniformInfo &info = uniforms[name];
288 info.array_stride = 0;
289 info.matrix_stride = 0;
291 uniforms_by_index[i] = &info;
295 if(ARB_uniform_buffer_object)
296 query_uniform_blocks(uniforms_by_index);
298 UniformBlockInfo &default_block = uniform_blocks[string()];
299 default_block.data_size = 0;
300 default_block.bind_point = -1;
302 for(UniformMap::iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
305 i->second.location = glGetUniformLocation(id, i->second.name.c_str());
306 i->second.block = &default_block;
307 default_block.uniforms.push_back(&i->second);
310 default_block.layout_hash = compute_layout_hash(default_block.uniforms);
312 string layout_descriptor;
313 for(UniformBlockMap::const_iterator i=uniform_blocks.begin(); i!=uniform_blocks.end(); ++i)
314 layout_descriptor += format("%d:%x\n", i->second.bind_point, i->second.layout_hash);
315 uniform_layout_hash = hash32(layout_descriptor);
318 void Program::query_uniform_blocks(const vector<UniformInfo *> &uniforms_by_index)
320 uniform_blocks.clear();
322 std::set<unsigned> used_bind_points;
323 unsigned count = get_program_i(id, GL_ACTIVE_UNIFORM_BLOCKS);
324 for(unsigned i=0; i<count; ++i)
328 glGetActiveUniformBlockName(id, i, sizeof(name), &len, name);
329 UniformBlockInfo &info = uniform_blocks[name];
333 glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_DATA_SIZE, &value);
334 info.data_size = value;
336 glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS, &value);
337 vector<int> indices(value);
338 glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES, &indices[0]);
339 for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
341 if(!uniforms_by_index[*j])
342 throw logic_error("Program::link");
343 info.uniforms.push_back(uniforms_by_index[*j]);
344 uniforms_by_index[*j]->block = &info;
347 vector<unsigned> indices2(indices.begin(), indices.end());
348 vector<int> values(indices.size());
349 glGetActiveUniformsiv(id, indices.size(), &indices2[0], GL_UNIFORM_OFFSET, &values[0]);
350 for(unsigned j=0; j<indices.size(); ++j)
351 uniforms_by_index[indices[j]]->location = values[j];
354 for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
355 if(uniforms_by_index[*j]->size>1)
356 indices2.push_back(*j);
357 if(!indices2.empty())
359 glGetActiveUniformsiv(id, indices2.size(), &indices2[0], GL_UNIFORM_ARRAY_STRIDE, &values[0]);
360 for(unsigned j=0; j<indices2.size(); ++j)
361 uniforms_by_index[indices2[j]]->array_stride = values[j];
365 for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
367 GLenum t = uniforms_by_index[*j]->type;
368 if(t==GL_FLOAT_MAT4 || t==GL_FLOAT_MAT3 || t==GL_FLOAT_MAT2 ||
369 t==GL_FLOAT_MAT2x3 || t==GL_FLOAT_MAT2x4 || t==GL_FLOAT_MAT3x2 ||
370 t==GL_FLOAT_MAT3x4 || t==GL_FLOAT_MAT4x2 || t==GL_FLOAT_MAT4x3)
371 indices2.push_back(*j);
373 if(!indices2.empty())
375 glGetActiveUniformsiv(id, indices2.size(), &indices2[0], GL_UNIFORM_MATRIX_STRIDE, &values[0]);
376 for(unsigned j=0; j<indices2.size(); ++j)
377 uniforms_by_index[indices2[j]]->matrix_stride = values[j];
380 sort(info.uniforms.begin(), info.uniforms.end(), uniform_location_compare);
381 info.layout_hash = compute_layout_hash(info.uniforms);
382 unsigned n_bindings = BufferRange::get_n_uniform_buffer_bindings();
383 info.bind_point = info.layout_hash%n_bindings;
384 while(used_bind_points.count(info.bind_point))
385 info.bind_point = (info.bind_point+1)%n_bindings;
386 glUniformBlockBinding(id, i, info.bind_point);
387 used_bind_points.insert(info.bind_point);
391 void Program::query_attributes()
393 unsigned count = get_program_i(id, GL_ACTIVE_ATTRIBUTES);
394 for(unsigned i=0; i<count; ++i)
400 glGetActiveAttrib(id, i, sizeof(name), &len, &size, &type, name);
401 if(len && strncmp(name, "gl_", 3))
403 if(len>3 && !strcmp(name+len-3, "[0]"))
406 AttributeInfo &info = attributes[name];
408 info.location = glGetAttribLocation(id, name);
415 Program::LayoutHash Program::compute_layout_hash(const vector<const UniformInfo *> &uniforms)
417 string layout_descriptor;
418 for(vector<const UniformInfo *>::const_iterator i = uniforms.begin(); i!=uniforms.end(); ++i)
419 layout_descriptor += format("%d:%s:%x:%d\n", (*i)->location, (*i)->name, (*i)->type, (*i)->size);
420 return hash32(layout_descriptor);
423 bool Program::uniform_location_compare(const UniformInfo *uni1, const UniformInfo *uni2)
425 return uni1->location<uni2->location;
428 string Program::get_info_log() const
430 GLsizei len = get_program_i(id, GL_INFO_LOG_LENGTH);
431 string log(len+1, 0);
432 glGetProgramInfoLog(id, len+1, &len, &log[0]);
437 const Program::UniformBlockInfo &Program::get_uniform_block_info(const string &name) const
439 return get_item(uniform_blocks, name);
442 const Program::UniformInfo &Program::get_uniform_info(const string &name) const
444 return get_item(uniforms, name);
447 int Program::get_uniform_location(const string &n) const
449 if(n[n.size()-1]==']')
450 throw invalid_argument("Program::get_uniform_location");
452 UniformMap::const_iterator i = uniforms.find(n);
453 if(i==uniforms.end())
456 return i->second.block->bind_point<0 ? i->second.location : -1;
459 const Program::AttributeInfo &Program::get_attribute_info(const string &name) const
461 return get_item(attributes, name);
464 int Program::get_attribute_location(const string &n) const
466 if(n[n.size()-1]==']')
467 throw invalid_argument("Program::get_attribute_location");
469 AttributeMap::const_iterator i = attributes.find(n);
470 return i!=attributes.end() ? i->second.location : -1;
473 void Program::bind() const
476 throw invalid_operation("Program::bind");
478 if(!set_current(this))
484 void Program::unbind()
493 Program::Loader::Loader(Program &p, Collection &c):
494 DataFile::CollectionObjectLoader<Program>(p, &c)
496 add("module", &Loader::module);
499 add("attribute", &Loader::attribute);
500 add("fragment_shader", &Loader::fragment_shader);
501 add("geometry_shader", &Loader::geometry_shader);
502 add("vertex_shader", &Loader::vertex_shader);
505 void Program::Loader::finish()
510 void Program::Loader::module(const string &n)
512 map<string, int> spec_values;
513 SpecializationLoader ldr(spec_values);
515 obj.add_stages(get_collection().get<Module>(n), spec_values);
518 #pragma GCC diagnostic push
519 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
520 void Program::Loader::attribute(unsigned i, const string &n)
522 obj.bind_attribute(i, n);
525 void Program::Loader::fragment_shader(const string &src)
527 obj.attach_shader_owned(new FragmentShader(src));
530 void Program::Loader::geometry_shader(const string &src)
532 obj.attach_shader_owned(new GeometryShader(src));
535 void Program::Loader::vertex_shader(const string &src)
537 obj.attach_shader_owned(new VertexShader(src));
539 #pragma GCC diagnostic pop
542 DataFile::Loader::ActionMap Program::SpecializationLoader::shared_actions;
544 Program::SpecializationLoader::SpecializationLoader(map<string, int> &sv):
547 set_actions(shared_actions);
550 void Program::SpecializationLoader::init_actions()
552 add("specialize", &SpecializationLoader::specialize_bool);
553 add("specialize", &SpecializationLoader::specialize_int);
556 void Program::SpecializationLoader::specialize_bool(const string &name, bool value)
558 spec_values[name] = value;
561 void Program::SpecializationLoader::specialize_int(const string &name, int value)
563 spec_values[name] = value;