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
60 static Require _req(ARB_shader_objects);
62 id = glCreateProgram();
69 for(vector<unsigned>::iterator i=shader_ids.begin(); i!=shader_ids.end(); ++i)
74 void Program::add_stages(const Module &mod)
78 SL::Compiler compiler;
79 compiler.set_source(module->get_prepared_source(), "<module>");
80 compiler.compile(SL::Compiler::PROGRAM);
82 vector<SL::Stage::Type> stages = compiler.get_stages();
83 for(vector<SL::Stage::Type>::const_iterator i=stages.begin(); i!=stages.end(); ++i)
88 case SL::Stage::VERTEX:
89 { static Require _req(ARB_vertex_shader); }
90 type = GL_VERTEX_SHADER;
92 case SL::Stage::GEOMETRY:
93 { static Require _req(ARB_geometry_shader4); }
94 type = GL_GEOMETRY_SHADER;
96 case SL::Stage::FRAGMENT:
97 { static Require _req(ARB_fragment_shader); }
98 type = GL_FRAGMENT_SHADER;
101 throw invalid_operation("Program::add_stages");
104 unsigned stage_id = glCreateShader(type);
105 shader_ids.push_back(stage_id);
106 glAttachShader(id, stage_id);
108 string stage_src = compiler.get_stage_glsl(*i);
109 const char *src_ptr = stage_src.data();
110 int src_len = stage_src.size();
111 glShaderSource(stage_id, 1, &src_ptr, &src_len);
113 if(*i==SL::Stage::VERTEX)
115 const map<string, unsigned> &attribs = compiler.get_vertex_attributes();
116 for(map<string, unsigned>::const_iterator j=attribs.begin(); j!=attribs.end(); ++j)
117 glBindAttribLocation(id, j->second, j->first.c_str());
120 if(*i==SL::Stage::FRAGMENT && EXT_gpu_shader4)
122 const map<string, unsigned> &frag_outs = compiler.get_fragment_outputs();
123 for(map<string, unsigned>::const_iterator j=frag_outs.begin(); j!=frag_outs.end(); ++j)
124 glBindFragDataLocation(id, j->second, j->first.c_str());
129 #pragma GCC diagnostic push
130 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
131 void Program::attach_shader(Shader &shader)
133 unsigned shader_id = shader.steal_id();
135 throw invalid_argument("Program::attach_shader");
136 shader_ids.push_back(shader_id);
139 void Program::attach_shader_owned(Shader *shader)
141 attach_shader(*shader);
145 void Program::detach_shader(Shader &)
149 const vector<Shader *> &Program::get_attached_shaders() const
151 static vector<Shader *> dummy;
155 void Program::bind_attribute(unsigned index, const string &name)
157 static Require _req(ARB_vertex_shader);
158 glBindAttribLocation(id, index, name.c_str());
161 void Program::bind_attribute(VertexComponent comp, const string &name)
163 bind_attribute(get_component_type(comp), name);
166 void Program::bind_fragment_data(unsigned index, const string &name)
168 static Require _req(EXT_gpu_shader4);
169 glBindFragDataLocation(id, index, name.c_str());
171 #pragma GCC diagnostic pop
175 for(vector<unsigned>::const_iterator i=shader_ids.begin(); i!=shader_ids.end(); ++i)
178 bool compiled = get_shader_i(*i, GL_COMPILE_STATUS);
180 GLsizei info_log_len = get_shader_i(*i, GL_INFO_LOG_LENGTH);
181 string info_log(info_log_len+1, 0);
182 glGetShaderInfoLog(*i, info_log_len+1, &info_log_len, &info_log[0]);
183 info_log.erase(info_log_len);
184 info_log = module->get_source_map().translate_errors(info_log);
187 throw compile_error(info_log);
189 if(!info_log.empty())
190 IO::print("Shader compile info log:\n%s", info_log);
197 linked = get_program_i(id, GL_LINK_STATUS);
199 GLsizei info_log_len = get_program_i(id, GL_INFO_LOG_LENGTH);
200 string info_log(info_log_len+1, 0);
201 glGetProgramInfoLog(id, info_log_len+1, &info_log_len, &info_log[0]);
202 info_log.erase(info_log_len);
203 info_log = module->get_source_map().translate_errors(info_log);
206 throw compile_error(info_log);
208 if(!info_log.empty())
209 IO::print("Program link info log:\n%s", info_log);
215 for(UniformMap::const_iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
216 require_type(i->second.type);
217 for(AttributeMap::const_iterator i=attributes.begin(); i!=attributes.end(); ++i)
218 require_type(i->second.type);
221 void Program::require_type(GLenum t)
225 case GL_FLOAT_MAT2x3:
226 case GL_FLOAT_MAT2x4:
227 case GL_FLOAT_MAT3x2:
228 case GL_FLOAT_MAT3x4:
229 case GL_FLOAT_MAT4x2:
230 case GL_FLOAT_MAT4x3:
231 { static Require _req(NV_non_square_matrices); }
236 void Program::query_uniforms()
238 unsigned count = get_program_i(id, GL_ACTIVE_UNIFORMS);
239 vector<UniformInfo *> uniforms_by_index(count);
240 for(unsigned i=0; i<count; ++i)
246 glGetActiveUniform(id, i, sizeof(name), &len, &size, &type, name);
247 if(len && strncmp(name, "gl_", 3))
249 /* Some implementations report the first element of a uniform array,
250 others report just the name of the array itself. */
251 if(len>3 && !strcmp(name+len-3, "[0]"))
254 UniformInfo &info = uniforms[name];
258 info.array_stride = 0;
259 info.matrix_stride = 0;
261 uniforms_by_index[i] = &info;
265 if(ARB_uniform_buffer_object)
266 query_uniform_blocks(uniforms_by_index);
268 UniformBlockInfo &default_block = uniform_blocks[string()];
269 default_block.data_size = 0;
270 default_block.bind_point = -1;
272 for(UniformMap::iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
275 i->second.location = glGetUniformLocation(id, i->second.name.c_str());
276 i->second.block = &default_block;
277 default_block.uniforms.push_back(&i->second);
280 default_block.layout_hash = compute_layout_hash(default_block.uniforms);
282 string layout_descriptor;
283 for(UniformBlockMap::const_iterator i=uniform_blocks.begin(); i!=uniform_blocks.end(); ++i)
284 layout_descriptor += format("%d:%x\n", i->second.bind_point, i->second.layout_hash);
285 uniform_layout_hash = hash32(layout_descriptor);
288 void Program::query_uniform_blocks(const vector<UniformInfo *> &uniforms_by_index)
290 uniform_blocks.clear();
292 std::set<unsigned> used_bind_points;
293 unsigned count = get_program_i(id, GL_ACTIVE_UNIFORM_BLOCKS);
294 for(unsigned i=0; i<count; ++i)
298 glGetActiveUniformBlockName(id, i, sizeof(name), &len, name);
299 UniformBlockInfo &info = uniform_blocks[name];
303 glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_DATA_SIZE, &value);
304 info.data_size = value;
306 glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS, &value);
307 vector<int> indices(value);
308 glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES, &indices[0]);
309 for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
311 if(!uniforms_by_index[*j])
312 throw logic_error("Program::link");
313 info.uniforms.push_back(uniforms_by_index[*j]);
314 uniforms_by_index[*j]->block = &info;
317 vector<unsigned> indices2(indices.begin(), indices.end());
318 vector<int> values(indices.size());
319 glGetActiveUniformsiv(id, indices.size(), &indices2[0], GL_UNIFORM_OFFSET, &values[0]);
320 for(unsigned j=0; j<indices.size(); ++j)
321 uniforms_by_index[indices[j]]->location = values[j];
324 for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
325 if(uniforms_by_index[*j]->size>1)
326 indices2.push_back(*j);
327 if(!indices2.empty())
329 glGetActiveUniformsiv(id, indices2.size(), &indices2[0], GL_UNIFORM_ARRAY_STRIDE, &values[0]);
330 for(unsigned j=0; j<indices2.size(); ++j)
331 uniforms_by_index[indices2[j]]->array_stride = values[j];
335 for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
337 GLenum t = uniforms_by_index[*j]->type;
338 if(t==GL_FLOAT_MAT4 || t==GL_FLOAT_MAT3 || t==GL_FLOAT_MAT2 ||
339 t==GL_FLOAT_MAT2x3 || t==GL_FLOAT_MAT2x4 || t==GL_FLOAT_MAT3x2 ||
340 t==GL_FLOAT_MAT3x4 || t==GL_FLOAT_MAT4x2 || t==GL_FLOAT_MAT4x3)
341 indices2.push_back(*j);
343 if(!indices2.empty())
345 glGetActiveUniformsiv(id, indices2.size(), &indices2[0], GL_UNIFORM_MATRIX_STRIDE, &values[0]);
346 for(unsigned j=0; j<indices2.size(); ++j)
347 uniforms_by_index[indices2[j]]->matrix_stride = values[j];
350 sort(info.uniforms.begin(), info.uniforms.end(), uniform_location_compare);
351 info.layout_hash = compute_layout_hash(info.uniforms);
352 unsigned n_bindings = BufferRange::get_n_uniform_buffer_bindings();
353 info.bind_point = info.layout_hash%n_bindings;
354 while(used_bind_points.count(info.bind_point))
355 info.bind_point = (info.bind_point+1)%n_bindings;
356 glUniformBlockBinding(id, i, info.bind_point);
357 used_bind_points.insert(info.bind_point);
361 void Program::query_attributes()
363 unsigned count = get_program_i(id, GL_ACTIVE_ATTRIBUTES);
364 for(unsigned i=0; i<count; ++i)
370 glGetActiveAttrib(id, i, sizeof(name), &len, &size, &type, name);
371 if(len && strncmp(name, "gl_", 3))
373 if(len>3 && !strcmp(name+len-3, "[0]"))
376 AttributeInfo &info = attributes[name];
378 info.location = glGetAttribLocation(id, name);
385 Program::LayoutHash Program::compute_layout_hash(const vector<const UniformInfo *> &uniforms)
387 string layout_descriptor;
388 for(vector<const UniformInfo *>::const_iterator i = uniforms.begin(); i!=uniforms.end(); ++i)
389 layout_descriptor += format("%d:%s:%x:%d\n", (*i)->location, (*i)->name, (*i)->type, (*i)->size);
390 return hash32(layout_descriptor);
393 bool Program::uniform_location_compare(const UniformInfo *uni1, const UniformInfo *uni2)
395 return uni1->location<uni2->location;
398 string Program::get_info_log() const
400 GLsizei len = get_program_i(id, GL_INFO_LOG_LENGTH);
401 string log(len+1, 0);
402 glGetProgramInfoLog(id, len+1, &len, &log[0]);
407 const Program::UniformBlockInfo &Program::get_uniform_block_info(const string &name) const
409 return get_item(uniform_blocks, name);
412 const Program::UniformInfo &Program::get_uniform_info(const string &name) const
414 return get_item(uniforms, name);
417 int Program::get_uniform_location(const string &n) const
419 if(n[n.size()-1]==']')
420 throw invalid_argument("Program::get_uniform_location");
422 UniformMap::const_iterator i = uniforms.find(n);
423 if(i==uniforms.end())
426 return i->second.block->bind_point<0 ? i->second.location : -1;
429 const Program::AttributeInfo &Program::get_attribute_info(const string &name) const
431 return get_item(attributes, name);
434 int Program::get_attribute_location(const string &n) const
436 if(n[n.size()-1]==']')
437 throw invalid_argument("Program::get_attribute_location");
439 AttributeMap::const_iterator i = attributes.find(n);
440 return i!=attributes.end() ? i->second.location : -1;
443 void Program::bind() const
446 throw invalid_operation("Program::bind");
448 if(!set_current(this))
454 void Program::unbind()
463 Program::Loader::Loader(Program &p, Collection &c):
464 DataFile::CollectionObjectLoader<Program>(p, &c)
466 add("module", &Loader::module);
469 add("attribute", &Loader::attribute);
470 add("fragment_shader", &Loader::fragment_shader);
471 add("geometry_shader", &Loader::geometry_shader);
472 add("vertex_shader", &Loader::vertex_shader);
475 void Program::Loader::finish()
480 void Program::Loader::module(const string &n)
482 obj.add_stages(get_collection().get<Module>(n));
485 #pragma GCC diagnostic push
486 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
487 void Program::Loader::attribute(unsigned i, const string &n)
489 obj.bind_attribute(i, n);
492 void Program::Loader::fragment_shader(const string &src)
494 obj.attach_shader_owned(new FragmentShader(src));
497 void Program::Loader::geometry_shader(const string &src)
499 obj.attach_shader_owned(new GeometryShader(src));
502 void Program::Loader::vertex_shader(const string &src)
504 obj.attach_shader_owned(new VertexShader(src));
506 #pragma GCC diagnostic pop