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 string diagnostics = compiler.get_diagnostics();
91 if(!diagnostics.empty())
92 IO::print("Program diagnostics:\n%s\n", diagnostics);
95 vector<SL::Stage::Type> stages = compiler.get_stages();
96 for(vector<SL::Stage::Type>::const_iterator i=stages.begin(); i!=stages.end(); ++i)
101 case SL::Stage::VERTEX:
102 { static Require _req(ARB_vertex_shader); }
103 type = GL_VERTEX_SHADER;
105 case SL::Stage::GEOMETRY:
106 { static Require _req(ARB_geometry_shader4); }
107 type = GL_GEOMETRY_SHADER;
109 case SL::Stage::FRAGMENT:
110 { static Require _req(ARB_fragment_shader); }
111 type = GL_FRAGMENT_SHADER;
114 throw invalid_operation("Program::add_stages");
117 unsigned stage_id = glCreateShader(type);
118 shader_ids.push_back(stage_id);
119 glAttachShader(id, stage_id);
121 string stage_src = compiler.get_stage_glsl(*i);
122 const char *src_ptr = stage_src.data();
123 int src_len = stage_src.size();
124 glShaderSource(stage_id, 1, &src_ptr, &src_len);
126 if(*i==SL::Stage::VERTEX)
128 const map<string, unsigned> &attribs = compiler.get_vertex_attributes();
129 for(map<string, unsigned>::const_iterator j=attribs.begin(); j!=attribs.end(); ++j)
130 glBindAttribLocation(id, j->second, j->first.c_str());
133 if(*i==SL::Stage::FRAGMENT && EXT_gpu_shader4)
135 const map<string, unsigned> &frag_outs = compiler.get_fragment_outputs();
136 for(map<string, unsigned>::const_iterator j=frag_outs.begin(); j!=frag_outs.end(); ++j)
137 glBindFragDataLocation(id, j->second, j->first.c_str());
142 #pragma GCC diagnostic push
143 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
144 void Program::attach_shader(Shader &shader)
146 unsigned shader_id = shader.steal_id();
148 throw invalid_argument("Program::attach_shader");
149 shader_ids.push_back(shader_id);
152 void Program::attach_shader_owned(Shader *shader)
154 attach_shader(*shader);
158 void Program::detach_shader(Shader &)
162 const vector<Shader *> &Program::get_attached_shaders() const
164 static vector<Shader *> dummy;
168 void Program::bind_attribute(unsigned index, const string &name)
170 static Require _req(ARB_vertex_shader);
171 glBindAttribLocation(id, index, name.c_str());
174 void Program::bind_attribute(VertexAttribute attr, const string &name)
176 bind_attribute(get_attribute_semantic(attr), name);
179 void Program::bind_fragment_data(unsigned index, const string &name)
181 static Require _req(EXT_gpu_shader4);
182 glBindFragDataLocation(id, index, name.c_str());
184 #pragma GCC diagnostic pop
188 for(vector<unsigned>::const_iterator i=shader_ids.begin(); i!=shader_ids.end(); ++i)
191 bool compiled = get_shader_i(*i, GL_COMPILE_STATUS);
193 GLsizei info_log_len = get_shader_i(*i, GL_INFO_LOG_LENGTH);
194 string info_log(info_log_len+1, 0);
195 glGetShaderInfoLog(*i, info_log_len+1, &info_log_len, &info_log[0]);
196 info_log.erase(info_log_len);
197 info_log = module->get_source_map().translate_errors(info_log);
200 throw compile_error(info_log);
202 if(!info_log.empty())
203 IO::print("Shader compile info log:\n%s", info_log);
210 linked = get_program_i(id, GL_LINK_STATUS);
212 GLsizei info_log_len = get_program_i(id, GL_INFO_LOG_LENGTH);
213 string info_log(info_log_len+1, 0);
214 glGetProgramInfoLog(id, info_log_len+1, &info_log_len, &info_log[0]);
215 info_log.erase(info_log_len);
216 info_log = module->get_source_map().translate_errors(info_log);
219 throw compile_error(info_log);
221 if(!info_log.empty())
222 IO::print("Program link info log:\n%s", info_log);
228 for(UniformMap::const_iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
229 require_type(i->second.type);
230 for(AttributeMap::const_iterator i=attributes.begin(); i!=attributes.end(); ++i)
231 require_type(i->second.type);
234 void Program::require_type(GLenum t)
238 case GL_FLOAT_MAT2x3:
239 case GL_FLOAT_MAT2x4:
240 case GL_FLOAT_MAT3x2:
241 case GL_FLOAT_MAT3x4:
242 case GL_FLOAT_MAT4x2:
243 case GL_FLOAT_MAT4x3:
244 { static Require _req(NV_non_square_matrices); }
249 void Program::query_uniforms()
251 unsigned count = get_program_i(id, GL_ACTIVE_UNIFORMS);
252 vector<UniformInfo *> uniforms_by_index(count);
253 for(unsigned i=0; i<count; ++i)
259 glGetActiveUniform(id, i, sizeof(name), &len, &size, &type, name);
260 if(len && strncmp(name, "gl_", 3))
262 /* Some implementations report the first element of a uniform array,
263 others report just the name of the array itself. */
264 if(len>3 && !strcmp(name+len-3, "[0]"))
267 UniformInfo &info = uniforms[name];
271 info.array_stride = 0;
272 info.matrix_stride = 0;
274 uniforms_by_index[i] = &info;
278 if(ARB_uniform_buffer_object)
279 query_uniform_blocks(uniforms_by_index);
281 UniformBlockInfo &default_block = uniform_blocks[string()];
282 default_block.data_size = 0;
283 default_block.bind_point = -1;
285 for(UniformMap::iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
288 i->second.location = glGetUniformLocation(id, i->second.name.c_str());
289 i->second.block = &default_block;
290 default_block.uniforms.push_back(&i->second);
293 default_block.layout_hash = compute_layout_hash(default_block.uniforms);
295 string layout_descriptor;
296 for(UniformBlockMap::const_iterator i=uniform_blocks.begin(); i!=uniform_blocks.end(); ++i)
297 layout_descriptor += format("%d:%x\n", i->second.bind_point, i->second.layout_hash);
298 uniform_layout_hash = hash32(layout_descriptor);
301 void Program::query_uniform_blocks(const vector<UniformInfo *> &uniforms_by_index)
303 uniform_blocks.clear();
305 std::set<unsigned> used_bind_points;
306 unsigned count = get_program_i(id, GL_ACTIVE_UNIFORM_BLOCKS);
307 for(unsigned i=0; i<count; ++i)
311 glGetActiveUniformBlockName(id, i, sizeof(name), &len, name);
312 UniformBlockInfo &info = uniform_blocks[name];
316 glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_DATA_SIZE, &value);
317 info.data_size = value;
319 glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS, &value);
320 vector<int> indices(value);
321 glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES, &indices[0]);
322 for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
324 if(!uniforms_by_index[*j])
325 throw logic_error("Program::link");
326 info.uniforms.push_back(uniforms_by_index[*j]);
327 uniforms_by_index[*j]->block = &info;
330 vector<unsigned> indices2(indices.begin(), indices.end());
331 vector<int> values(indices.size());
332 glGetActiveUniformsiv(id, indices.size(), &indices2[0], GL_UNIFORM_OFFSET, &values[0]);
333 for(unsigned j=0; j<indices.size(); ++j)
334 uniforms_by_index[indices[j]]->location = values[j];
337 for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
338 if(uniforms_by_index[*j]->size>1)
339 indices2.push_back(*j);
340 if(!indices2.empty())
342 glGetActiveUniformsiv(id, indices2.size(), &indices2[0], GL_UNIFORM_ARRAY_STRIDE, &values[0]);
343 for(unsigned j=0; j<indices2.size(); ++j)
344 uniforms_by_index[indices2[j]]->array_stride = values[j];
348 for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
350 GLenum t = uniforms_by_index[*j]->type;
351 if(t==GL_FLOAT_MAT4 || t==GL_FLOAT_MAT3 || t==GL_FLOAT_MAT2 ||
352 t==GL_FLOAT_MAT2x3 || t==GL_FLOAT_MAT2x4 || t==GL_FLOAT_MAT3x2 ||
353 t==GL_FLOAT_MAT3x4 || t==GL_FLOAT_MAT4x2 || t==GL_FLOAT_MAT4x3)
354 indices2.push_back(*j);
356 if(!indices2.empty())
358 glGetActiveUniformsiv(id, indices2.size(), &indices2[0], GL_UNIFORM_MATRIX_STRIDE, &values[0]);
359 for(unsigned j=0; j<indices2.size(); ++j)
360 uniforms_by_index[indices2[j]]->matrix_stride = values[j];
363 sort(info.uniforms.begin(), info.uniforms.end(), uniform_location_compare);
364 info.layout_hash = compute_layout_hash(info.uniforms);
365 unsigned n_bindings = BufferRange::get_n_uniform_buffer_bindings();
366 info.bind_point = info.layout_hash%n_bindings;
367 while(used_bind_points.count(info.bind_point))
368 info.bind_point = (info.bind_point+1)%n_bindings;
369 glUniformBlockBinding(id, i, info.bind_point);
370 used_bind_points.insert(info.bind_point);
374 void Program::query_attributes()
376 unsigned count = get_program_i(id, GL_ACTIVE_ATTRIBUTES);
377 for(unsigned i=0; i<count; ++i)
383 glGetActiveAttrib(id, i, sizeof(name), &len, &size, &type, name);
384 if(len && strncmp(name, "gl_", 3))
386 if(len>3 && !strcmp(name+len-3, "[0]"))
389 AttributeInfo &info = attributes[name];
391 info.location = glGetAttribLocation(id, name);
398 Program::LayoutHash Program::compute_layout_hash(const vector<const UniformInfo *> &uniforms)
400 string layout_descriptor;
401 for(vector<const UniformInfo *>::const_iterator i = uniforms.begin(); i!=uniforms.end(); ++i)
402 layout_descriptor += format("%d:%s:%x:%d\n", (*i)->location, (*i)->name, (*i)->type, (*i)->size);
403 return hash32(layout_descriptor);
406 bool Program::uniform_location_compare(const UniformInfo *uni1, const UniformInfo *uni2)
408 return uni1->location<uni2->location;
411 string Program::get_info_log() const
413 GLsizei len = get_program_i(id, GL_INFO_LOG_LENGTH);
414 string log(len+1, 0);
415 glGetProgramInfoLog(id, len+1, &len, &log[0]);
420 const Program::UniformBlockInfo &Program::get_uniform_block_info(const string &name) const
422 return get_item(uniform_blocks, name);
425 const Program::UniformInfo &Program::get_uniform_info(const string &name) const
427 return get_item(uniforms, name);
430 int Program::get_uniform_location(const string &n) const
432 if(n[n.size()-1]==']')
433 throw invalid_argument("Program::get_uniform_location");
435 UniformMap::const_iterator i = uniforms.find(n);
436 if(i==uniforms.end())
439 return i->second.block->bind_point<0 ? i->second.location : -1;
442 const Program::AttributeInfo &Program::get_attribute_info(const string &name) const
444 return get_item(attributes, name);
447 int Program::get_attribute_location(const string &n) const
449 if(n[n.size()-1]==']')
450 throw invalid_argument("Program::get_attribute_location");
452 AttributeMap::const_iterator i = attributes.find(n);
453 return i!=attributes.end() ? i->second.location : -1;
456 void Program::bind() const
459 throw invalid_operation("Program::bind");
461 if(!set_current(this))
467 void Program::unbind()
476 Program::Loader::Loader(Program &p, Collection &c):
477 DataFile::CollectionObjectLoader<Program>(p, &c)
479 add("module", &Loader::module);
482 add("attribute", &Loader::attribute);
483 add("fragment_shader", &Loader::fragment_shader);
484 add("geometry_shader", &Loader::geometry_shader);
485 add("vertex_shader", &Loader::vertex_shader);
488 void Program::Loader::finish()
493 void Program::Loader::module(const string &n)
495 map<string, int> spec_values;
496 SpecializationLoader ldr(spec_values);
498 obj.add_stages(get_collection().get<Module>(n), spec_values);
501 #pragma GCC diagnostic push
502 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
503 void Program::Loader::attribute(unsigned i, const string &n)
505 obj.bind_attribute(i, n);
508 void Program::Loader::fragment_shader(const string &src)
510 obj.attach_shader_owned(new FragmentShader(src));
513 void Program::Loader::geometry_shader(const string &src)
515 obj.attach_shader_owned(new GeometryShader(src));
518 void Program::Loader::vertex_shader(const string &src)
520 obj.attach_shader_owned(new VertexShader(src));
522 #pragma GCC diagnostic pop
525 DataFile::Loader::ActionMap Program::SpecializationLoader::shared_actions;
527 Program::SpecializationLoader::SpecializationLoader(map<string, int> &sv):
530 set_actions(shared_actions);
533 void Program::SpecializationLoader::init_actions()
535 add("specialize", &SpecializationLoader::specialize_bool);
536 add("specialize", &SpecializationLoader::specialize_int);
539 void Program::SpecializationLoader::specialize_bool(const string &name, bool value)
541 spec_values[name] = value;
544 void Program::SpecializationLoader::specialize_int(const string &name, int value)
546 spec_values[name] = value;