]> git.tdb.fi Git - libs/gl.git/blobdiff - source/core/program.cpp
Rename some things in Program
[libs/gl.git] / source / core / program.cpp
index 4cdbf97c0fcdf84431b1ba88044cc8bd41addb07..f28736bd9a63b7550ef712e0ab531d5a6b26b68d 100644 (file)
@@ -3,6 +3,10 @@
 #include <set>
 #include <msp/core/hash.h>
 #include <msp/core/maputils.h>
+#include <msp/gl/extensions/arb_es2_compatibility.h>
+#include <msp/gl/extensions/arb_fragment_shader.h>
+#include <msp/gl/extensions/arb_gl_spirv.h>
+#include <msp/gl/extensions/arb_geometry_shader4.h>
 #include <msp/gl/extensions/arb_shader_objects.h>
 #include <msp/gl/extensions/arb_uniform_buffer_object.h>
 #include <msp/gl/extensions/arb_vertex_shader.h>
@@ -32,27 +36,30 @@ Program::Program(const std::string &source)
 {
        init();
 
-       SL::Compiler compiler;
-       if(source.find(';')==string::npos && source.size()>5 && !source.compare(source.size()-5, 5, ".glsl"))
-       {
-               if(RefPtr<IO::Seekable> io = Resources::get_builtins().open(source))
-                       compiler.load_source(*io, source);
-               else
-                       throw IO::file_not_found(source);
-       }
-       else
-               compiler.set_source(source);
-       compiler.compile();
-       compiler.add_shaders(*this);
+       GlslModule mod;
+       mod.set_source(source);
+       add_stages(mod);
+
        link();
+       module = 0;
 }
 
 Program::Program(const string &vert, const string &frag)
 {
        init();
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
        attach_shader_owned(new VertexShader(vert));
        attach_shader_owned(new FragmentShader(frag));
+#pragma GCC diagnostic pop
+       link();
+}
+
+Program::Program(const Module &mod, const map<string, int> &spec_values)
+{
+       init();
+       add_stages(mod, spec_values);
        link();
 }
 
@@ -60,52 +67,201 @@ void Program::init()
 {
        static Require _req(ARB_shader_objects);
 
-       linked = false;
        id = glCreateProgram();
+       module = 0;
+       linked = false;
 }
 
 Program::~Program()
 {
-       for(ShaderList::iterator i=owned_data.begin(); i!=owned_data.end(); ++i)
-               delete *i;
+       for(vector<unsigned>::iterator i=stage_ids.begin(); i!=stage_ids.end(); ++i)
+               glDeleteShader(*i);
        glDeleteProgram(id);
 }
 
-void Program::attach_shader(Shader &shader)
+void Program::add_stages(const Module &mod, const map<string, int> &spec_values)
 {
-       if(find(shaders.begin(), shaders.end(), &shader)==shaders.end())
+       if(!stage_ids.empty())
+               throw invalid_operation("Program::add_stages");
+
+       switch(mod.get_format())
        {
-               glAttachShader(id, shader.get_id());
-               shaders.push_back(&shader);
+       case Module::GLSL: return add_glsl_stages(static_cast<const GlslModule &>(mod), spec_values);
+       case Module::SPIR_V: return add_spirv_stages(static_cast<const SpirVModule &>(mod), spec_values);
+       default: throw invalid_argument("Program::add_stages");
        }
 }
 
-void Program::attach_shader_owned(Shader *shader)
+unsigned Program::add_stage(GLenum type)
 {
-       attach_shader(*shader);
-       if(find(owned_data.begin(), owned_data.end(), shader)==owned_data.end())
-               owned_data.push_back(shader);
+       switch(type)
+       {
+       case GL_VERTEX_SHADER: { static Require _req(ARB_vertex_shader); } break;
+       case GL_GEOMETRY_SHADER: { static Require _req(ARB_geometry_shader4); } break;
+       case GL_FRAGMENT_SHADER: { static Require _req(ARB_fragment_shader); } break;
+       default: throw invalid_argument("Program::add_stage");
+       }
+
+       unsigned stage_id = glCreateShader(type);
+       stage_ids.push_back(stage_id);
+       glAttachShader(id, stage_id);
+
+       return stage_id;
 }
 
-void Program::detach_shader(Shader &shader)
+void Program::add_glsl_stages(const GlslModule &mod, const map<string, int> &spec_values)
 {
-       ShaderList::iterator i = remove(shaders.begin(), shaders.end(), &shader);
-       if(i!=shaders.end())
+       module = &mod;
+
+       SL::Compiler compiler;
+       compiler.set_source(mod.get_prepared_source(), "<module>");
+       compiler.specialize(spec_values);
+       compiler.compile(SL::Compiler::PROGRAM);
+#ifdef DEBUG
+       string diagnostics = compiler.get_diagnostics();
+       if(!diagnostics.empty())
+               IO::print("Program diagnostics:\n%s\n", diagnostics);
+#endif
+
+       vector<SL::Stage::Type> stages = compiler.get_stages();
+       for(vector<SL::Stage::Type>::const_iterator i=stages.begin(); i!=stages.end(); ++i)
        {
-               shaders.erase(i, shaders.end());
-               glDetachShader(id, shader.get_id());
+               unsigned stage_id = 0;
+               switch(*i)
+               {
+               case SL::Stage::VERTEX: stage_id = add_stage(GL_VERTEX_SHADER); break;
+               case SL::Stage::GEOMETRY: stage_id = add_stage(GL_GEOMETRY_SHADER); break;
+               case SL::Stage::FRAGMENT: stage_id = add_stage(GL_FRAGMENT_SHADER); break;
+               default: throw invalid_operation("Program::add_glsl_stages");
+               }
+
+               string stage_src = compiler.get_stage_glsl(*i);
+               const char *src_ptr = stage_src.data();
+               int src_len = stage_src.size();
+               glShaderSource(stage_id, 1, &src_ptr, &src_len);
+
+               if(*i==SL::Stage::VERTEX)
+               {
+                       const map<string, unsigned> &attribs = compiler.get_vertex_attributes();
+                       for(map<string, unsigned>::const_iterator j=attribs.begin(); j!=attribs.end(); ++j)
+                               glBindAttribLocation(id, j->second, j->first.c_str());
+               }
+
+               if(*i==SL::Stage::FRAGMENT && EXT_gpu_shader4)
+               {
+                       const map<string, unsigned> &frag_outs = compiler.get_fragment_outputs();
+                       for(map<string, unsigned>::const_iterator j=frag_outs.begin(); j!=frag_outs.end(); ++j)
+                               glBindFragDataLocation(id, j->second, j->first.c_str());
+               }
+
+               compile_glsl_stage(stage_id);
        }
 }
 
+void Program::compile_glsl_stage(unsigned stage_id)
+{
+       glCompileShader(stage_id);
+       bool compiled = get_shader_i(stage_id, GL_COMPILE_STATUS);
+
+       GLsizei info_log_len = get_shader_i(stage_id, GL_INFO_LOG_LENGTH);
+       string info_log(info_log_len+1, 0);
+       glGetShaderInfoLog(stage_id, info_log_len+1, &info_log_len, &info_log[0]);
+       info_log.erase(info_log_len);
+       if(module && module->get_format()==Module::GLSL)
+               info_log = static_cast<const GlslModule *>(module)->get_source_map().translate_errors(info_log);
+
+       if(!compiled)
+               throw compile_error(info_log);
+#ifdef DEBUG
+       if(!info_log.empty())
+               IO::print("Shader compile info log:\n%s", info_log);
+#endif
+}
+
+void Program::add_spirv_stages(const SpirVModule &mod, const map<string, int> &spec_values)
+{
+       static Require _req(ARB_gl_spirv);
+       static Require _req2(ARB_ES2_compatibility);
+
+       module = &mod;
+
+       const vector<SpirVModule::EntryPoint> &entry_points = mod.get_entry_points();
+       std::set<SpirVModule::Stage> stages;
+       for(vector<SpirVModule::EntryPoint>::const_iterator i=entry_points.begin(); i!=entry_points.end(); ++i)
+       {
+               if(stages.count(i->stage))
+                       throw invalid_argument("Program::add_spirv_stages");
+
+               switch(i->stage)
+               {
+               case SpirVModule::VERTEX: add_stage(GL_VERTEX_SHADER); break;
+               case SpirVModule::GEOMETRY: add_stage(GL_GEOMETRY_SHADER); break;
+               case SpirVModule::FRAGMENT: add_stage(GL_FRAGMENT_SHADER); break;
+               default: throw invalid_operation("Program::add_spirv_stages");
+               }
+
+               stages.insert(i->stage);
+       }
+
+       const vector<UInt32> &code = mod.get_code();
+       glShaderBinary(stage_ids.size(), &stage_ids[0], GL_SHADER_BINARY_FORMAT_SPIR_V, &code[0], code.size()*4);
+
+       const vector<SpirVModule::SpecConstant> &spec_consts = mod.get_spec_constants();
+       vector<unsigned> spec_id_array;
+       vector<unsigned> spec_value_array;
+       spec_id_array.reserve(spec_consts.size());
+       spec_value_array.reserve(spec_consts.size());
+       for(vector<SpirVModule::SpecConstant>::const_iterator i=spec_consts.begin(); i!=spec_consts.end(); ++i)
+       {
+               map<string, int>::const_iterator j = spec_values.find(i->name);
+               if(j!=spec_values.end())
+               {
+                       spec_id_array.push_back(i->constant_id);
+                       spec_value_array.push_back(j->second);
+               }
+       }
+
+       vector<SpirVModule::EntryPoint>::const_iterator j=entry_points.begin();
+       for(vector<unsigned>::const_iterator i=stage_ids.begin(); i!=stage_ids.end(); ++i, ++j)
+               glSpecializeShader(*i, j->name.c_str(), spec_id_array.size(), &spec_id_array[0], &spec_value_array[0]);
+}
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+void Program::attach_shader(Shader &shader)
+{
+       unsigned shader_id = shader.steal_id();
+       if(!shader_id)
+               throw invalid_argument("Program::attach_shader");
+       stage_ids.push_back(shader_id);
+       compile_glsl_stage(shader_id);
+}
+
+void Program::attach_shader_owned(Shader *shader)
+{
+       attach_shader(*shader);
+       delete shader;
+}
+
+void Program::detach_shader(Shader &)
+{
+}
+
+const vector<Shader *> &Program::get_attached_shaders() const
+{
+       static vector<Shader *> dummy;
+       return dummy;
+}
+
 void Program::bind_attribute(unsigned index, const string &name)
 {
        static Require _req(ARB_vertex_shader);
        glBindAttribLocation(id, index, name.c_str());
 }
 
-void Program::bind_attribute(VertexComponent comp, const string &name)
+void Program::bind_attribute(VertexAttribute attr, const string &name)
 {
-       bind_attribute(get_component_type(comp), name);
+       bind_attribute(get_attribute_semantic(attr), name);
 }
 
 void Program::bind_fragment_data(unsigned index, const string &name)
@@ -113,28 +269,44 @@ void Program::bind_fragment_data(unsigned index, const string &name)
        static Require _req(EXT_gpu_shader4);
        glBindFragDataLocation(id, index, name.c_str());
 }
+#pragma GCC diagnostic pop
 
 void Program::link()
 {
-       for(ShaderList::iterator i=shaders.begin(); i!=shaders.end(); ++i)
-               if(!(*i)->is_compiled())
-                       (*i)->compile();
+       if(stage_ids.empty())
+               throw invalid_operation("Program::link");
 
        uniforms.clear();
+       uniform_blocks.clear();
+       attributes.clear();
 
        glLinkProgram(id);
        linked = get_program_i(id, GL_LINK_STATUS);
-       if(!linked)
-               throw compile_error(get_info_log());
 
+       GLsizei info_log_len = get_program_i(id, GL_INFO_LOG_LENGTH);
+       string info_log(info_log_len+1, 0);
+       glGetProgramInfoLog(id, info_log_len+1, &info_log_len, &info_log[0]);
+       info_log.erase(info_log_len);
+       if(module && module->get_format()==Module::GLSL)
+               info_log = static_cast<const GlslModule *>(module)->get_source_map().translate_errors(info_log);
+
+       if(!linked)
+               throw compile_error(info_log);
 #ifdef DEBUG
-       std::string info_log = get_info_log();
        if(!info_log.empty())
                IO::print("Program link info log:\n%s", info_log);
 #endif
 
-       query_uniforms();
-       query_attributes();
+       if(module->get_format()==Module::GLSL)
+       {
+               query_uniforms();
+               query_attributes();
+       }
+       else if(module->get_format()==Module::SPIR_V)
+       {
+               collect_uniforms();
+               collect_attributes();
+       }
 
        for(UniformMap::const_iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
                require_type(i->second.type);
@@ -142,21 +314,6 @@ void Program::link()
                require_type(i->second.type);
 }
 
-void Program::require_type(GLenum t)
-{
-       switch(t)
-       {
-       case GL_FLOAT_MAT2x3:
-       case GL_FLOAT_MAT2x4:
-       case GL_FLOAT_MAT3x2:
-       case GL_FLOAT_MAT3x4:
-       case GL_FLOAT_MAT4x2:
-       case GL_FLOAT_MAT4x3:
-               { static Require _req(NV_non_square_matrices); }
-               break;
-       }
-}
-
 void Program::query_uniforms()
 {
        unsigned count = get_program_i(id, GL_ACTIVE_UNIFORMS);
@@ -176,12 +333,9 @@ void Program::query_uniforms()
                                name[len-3] = 0;
 
                        UniformInfo &info = uniforms[name];
-                       info.block = 0;
                        info.name = name;
-                       info.size = size;
-                       info.array_stride = 0;
-                       info.matrix_stride = 0;
-                       info.type = type;
+                       info.array_size = size;
+                       info.type = from_gl_type(type);
                        uniforms_by_index[i] = &info;
                }
        }
@@ -190,8 +344,6 @@ void Program::query_uniforms()
                query_uniform_blocks(uniforms_by_index);
 
        UniformBlockInfo &default_block = uniform_blocks[string()];
-       default_block.data_size = 0;
-       default_block.bind_point = -1;
 
        for(UniformMap::iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
                if(!i->second.block)
@@ -203,16 +355,11 @@ void Program::query_uniforms()
 
        default_block.layout_hash = compute_layout_hash(default_block.uniforms);
 
-       string layout_descriptor;
-       for(UniformBlockMap::const_iterator i=uniform_blocks.begin(); i!=uniform_blocks.end(); ++i)
-               layout_descriptor += format("%d:%x\n", i->second.bind_point, i->second.layout_hash);
-       uniform_layout_hash = hash32(layout_descriptor);
+       update_layout_hash();
 }
 
 void Program::query_uniform_blocks(const vector<UniformInfo *> &uniforms_by_index)
 {
-       uniform_blocks.clear();
-
        std::set<unsigned> used_bind_points;
        unsigned count = get_program_i(id, GL_ACTIVE_UNIFORM_BLOCKS);
        for(unsigned i=0; i<count; ++i)
@@ -238,37 +385,35 @@ void Program::query_uniform_blocks(const vector<UniformInfo *> &uniforms_by_inde
                        uniforms_by_index[*j]->block = &info;
                }
 
-               vector<unsigned> indices2(indices.begin(), indices.end());
+               vector<unsigned> query_indices(indices.begin(), indices.end());
                vector<int> values(indices.size());
-               glGetActiveUniformsiv(id, indices.size(), &indices2[0], GL_UNIFORM_OFFSET, &values[0]);
+               glGetActiveUniformsiv(id, query_indices.size(), &query_indices[0], GL_UNIFORM_OFFSET, &values[0]);
                for(unsigned j=0; j<indices.size(); ++j)
-                       uniforms_by_index[indices[j]]->location = values[j];
+                       uniforms_by_index[indices[j]]->offset = values[j];
 
-               indices2.clear();
+               query_indices.clear();
                for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
-                       if(uniforms_by_index[*j]->size>1)
-                               indices2.push_back(*j);
-               if(!indices2.empty())
+                       if(uniforms_by_index[*j]->array_size>1)
+                               query_indices.push_back(*j);
+               if(!query_indices.empty())
                {
-                       glGetActiveUniformsiv(id, indices2.size(), &indices2[0], GL_UNIFORM_ARRAY_STRIDE, &values[0]);
-                       for(unsigned j=0; j<indices2.size(); ++j)
-                               uniforms_by_index[indices2[j]]->array_stride = values[j];
+                       glGetActiveUniformsiv(id, query_indices.size(), &query_indices[0], GL_UNIFORM_ARRAY_STRIDE, &values[0]);
+                       for(unsigned j=0; j<query_indices.size(); ++j)
+                               uniforms_by_index[query_indices[j]]->array_stride = values[j];
                }
 
-               indices2.clear();
+               query_indices.clear();
                for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
                {
-                       GLenum t = uniforms_by_index[*j]->type;
-                       if(t==GL_FLOAT_MAT4 || t==GL_FLOAT_MAT3 || t==GL_FLOAT_MAT2 ||
-                               t==GL_FLOAT_MAT2x3 || t==GL_FLOAT_MAT2x4 || t==GL_FLOAT_MAT3x2 ||
-                               t==GL_FLOAT_MAT3x4 || t==GL_FLOAT_MAT4x2 || t==GL_FLOAT_MAT4x3)
-                               indices2.push_back(*j);
+                       DataType t = uniforms_by_index[*j]->type;
+                       if(is_matrix(t))
+                               query_indices.push_back(*j);
                }
-               if(!indices2.empty())
+               if(!query_indices.empty())
                {
-                       glGetActiveUniformsiv(id, indices2.size(), &indices2[0], GL_UNIFORM_MATRIX_STRIDE, &values[0]);
-                       for(unsigned j=0; j<indices2.size(); ++j)
-                               uniforms_by_index[indices2[j]]->matrix_stride = values[j];
+                       glGetActiveUniformsiv(id, query_indices.size(), &query_indices[0], GL_UNIFORM_MATRIX_STRIDE, &values[0]);
+                       for(unsigned j=0; j<query_indices.size(); ++j)
+                               uniforms_by_index[query_indices[j]]->matrix_stride = values[j];
                }
 
                sort(info.uniforms.begin(), info.uniforms.end(), uniform_location_compare);
@@ -300,17 +445,114 @@ void Program::query_attributes()
                        AttributeInfo &info = attributes[name];
                        info.name = name;
                        info.location = glGetAttribLocation(id, name);
-                       info.size = size;
-                       info.type = type;
+                       info.array_size = size;
+                       info.type = from_gl_type(type);
+               }
+       }
+}
+
+void Program::collect_uniforms()
+{
+       const SpirVModule &mod = static_cast<const SpirVModule &>(*module);
+
+       UniformBlockInfo &default_block = uniform_blocks[string()];
+
+       const vector<SpirVModule::Variable> &variables = mod.get_variables();
+       for(vector<SpirVModule::Variable>::const_iterator i=variables.begin(); i!=variables.end(); ++i)
+       {
+               if(i->storage==SpirVModule::UNIFORM && i->struct_type)
+               {
+                       UniformBlockInfo &info = uniform_blocks[i->struct_type->name];
+                       info.name = i->struct_type->name;
+                       info.bind_point = i->binding;
+                       info.data_size = i->struct_type->size;
+
+                       string prefix;
+                       if(!i->name.empty())
+                               prefix = i->struct_type->name+".";
+                       collect_block_uniforms(info, *i->struct_type, prefix, 0);
+
+                       info.layout_hash = compute_layout_hash(info.uniforms);
+               }
+               else if(i->storage==SpirVModule::UNIFORM_CONSTANT && i->location>=0)
+               {
+                       UniformInfo &info = uniforms[i->name];
+                       info.name = i->name;
+                       info.block = &default_block;
+                       info.location = i->location;
+                       info.array_size = i->array_size;
+                       info.type = i->type;
+                       default_block.uniforms.push_back(&info);
+               }
+       }
+
+       default_block.layout_hash = compute_layout_hash(default_block.uniforms);
+
+       update_layout_hash();
+}
+
+void Program::collect_block_uniforms(UniformBlockInfo &block, const SpirVModule::Structure &strct, const string &prefix, unsigned base_offset)
+{
+       for(vector<SpirVModule::StructMember>::const_iterator i=strct.members.begin(); i!=strct.members.end(); ++i)
+       {
+               if(i->struct_type)
+               {
+                       if(i->array_size)
+                       {
+                               for(unsigned j=0; j<i->array_size; ++j)
+                                       collect_block_uniforms(block, *i->struct_type, format("%s%s[%d].", prefix, i->name, j), base_offset+i->offset+i->array_stride*j);
+                       }
+                       else
+                               collect_block_uniforms(block, *i->struct_type, prefix+i->name+".", base_offset+i->offset);
+               }
+               else
+               {
+                       string name = prefix+i->name;
+                       UniformInfo &info = uniforms[name];
+                       info.name = name;
+                       info.block = &block;
+                       info.offset = i->offset;
+                       info.array_size = i->array_size;
+                       info.array_stride = i->array_stride;
+                       info.matrix_stride = i->matrix_stride;
+                       info.type = i->type;
+                       block.uniforms.push_back(&info);
                }
        }
 }
 
+void Program::collect_attributes()
+{
+       const SpirVModule &mod = static_cast<const SpirVModule &>(*module);
+
+       const vector<SpirVModule::EntryPoint> &entry_points = mod.get_entry_points();
+       for(vector<SpirVModule::EntryPoint>::const_iterator i=entry_points.begin(); i!=entry_points.end(); ++i)
+               if(i->stage==SpirVModule::VERTEX && i->name=="main")
+               {
+                       for(vector<const SpirVModule::Variable *>::const_iterator j=i->globals.begin(); j!=i->globals.end(); ++j)
+                               if((*j)->storage==SpirVModule::INPUT)
+                               {
+                                       AttributeInfo &info = attributes[(*j)->name];
+                                       info.location = (*j)->location;
+                                       info.array_size = (*j)->array_size;
+                                       info.type = (*j)->type;
+                               }
+               }
+}
+
+void Program::update_layout_hash()
+{
+       string layout_descriptor;
+       for(UniformBlockMap::const_iterator i=uniform_blocks.begin(); i!=uniform_blocks.end(); ++i)
+               layout_descriptor += format("%d:%x\n", i->second.bind_point, i->second.layout_hash);
+       uniform_layout_hash = hash32(layout_descriptor);
+}
+
 Program::LayoutHash Program::compute_layout_hash(const vector<const UniformInfo *> &uniforms)
 {
        string layout_descriptor;
        for(vector<const UniformInfo *>::const_iterator i = uniforms.begin(); i!=uniforms.end(); ++i)
-               layout_descriptor += format("%d:%s:%x:%d\n", (*i)->location, (*i)->name, (*i)->type, (*i)->size);
+               layout_descriptor += format("%d:%s:%x:%d\n", (*i)->location, (*i)->name, (*i)->type, (*i)->array_size);
        return hash32(layout_descriptor);
 }
 
@@ -338,12 +580,12 @@ const Program::UniformInfo &Program::get_uniform_info(const string &name) const
        return get_item(uniforms, name);
 }
 
-int Program::get_uniform_location(const string &n) const
+int Program::get_uniform_location(const string &name) const
 {
-       if(n[n.size()-1]==']')
+       if(name[name.size()-1]==']')
                throw invalid_argument("Program::get_uniform_location");
 
-       UniformMap::const_iterator i = uniforms.find(n);
+       UniformMap::const_iterator i = uniforms.find(name);
        if(i==uniforms.end())
                return -1;
 
@@ -355,12 +597,12 @@ const Program::AttributeInfo &Program::get_attribute_info(const string &name) co
        return get_item(attributes, name);
 }
 
-int Program::get_attribute_location(const string &n) const
+int Program::get_attribute_location(const string &name) const
 {
-       if(n[n.size()-1]==']')
+       if(name[name.size()-1]==']')
                throw invalid_argument("Program::get_attribute_location");
 
-       AttributeMap::const_iterator i = attributes.find(n);
+       AttributeMap::const_iterator i = attributes.find(name);
        return i!=attributes.end() ? i->second.location : -1;
 }
 
@@ -384,9 +626,36 @@ void Program::unbind()
 }
 
 
-Program::Loader::Loader(Program &p):
-       DataFile::ObjectLoader<Program>(p)
+Program::UniformInfo::UniformInfo():
+       block(0),
+       location(-1),
+       array_size(0),
+       array_stride(0),
+       matrix_stride(0),
+       type(VOID)
+{ }
+
+
+Program::UniformBlockInfo::UniformBlockInfo():
+       data_size(0),
+       bind_point(-1),
+       layout_hash(0)
+{ }
+
+
+Program::AttributeInfo::AttributeInfo():
+       location(-1),
+       array_size(0),
+       type(VOID)
+{ }
+
+
+Program::Loader::Loader(Program &p, Collection &c):
+       DataFile::CollectionObjectLoader<Program>(p, &c)
 {
+       add("module",          &Loader::module);
+
+       // Deprecated
        add("attribute",       &Loader::attribute);
        add("fragment_shader", &Loader::fragment_shader);
        add("geometry_shader", &Loader::geometry_shader);
@@ -398,6 +667,16 @@ void Program::Loader::finish()
        obj.link();
 }
 
+void Program::Loader::module(const string &n)
+{
+       map<string, int> spec_values;
+       SpecializationLoader ldr(spec_values);
+       load_sub_with(ldr);
+       obj.add_stages(get_collection().get<Module>(n), spec_values);
+}
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 void Program::Loader::attribute(unsigned i, const string &n)
 {
        obj.bind_attribute(i, n);
@@ -417,6 +696,32 @@ void Program::Loader::vertex_shader(const string &src)
 {
        obj.attach_shader_owned(new VertexShader(src));
 }
+#pragma GCC diagnostic pop
+
+
+DataFile::Loader::ActionMap Program::SpecializationLoader::shared_actions;
+
+Program::SpecializationLoader::SpecializationLoader(map<string, int> &sv):
+       spec_values(sv)
+{
+       set_actions(shared_actions);
+}
+
+void Program::SpecializationLoader::init_actions()
+{
+       add("specialize", &SpecializationLoader::specialize_bool);
+       add("specialize", &SpecializationLoader::specialize_int);
+}
+
+void Program::SpecializationLoader::specialize_bool(const string &name, bool value)
+{
+       spec_values[name] = value;
+}
+
+void Program::SpecializationLoader::specialize_int(const string &name, int value)
+{
+       spec_values[name] = value;
+}
 
 } // namespace GL
 } // namespace Msp