using namespace std;
+enum SpirVConstants
+{
+ SPIRV_MAGIC = 0x07230203,
+ SPIRV_MAGIC_REVERSED = 0x03022307,
+
+ OP_NAME = 5,
+ OP_MEMBER_NAME = 6,
+ OP_ENTRY_POINT = 15,
+ OP_TYPE_VOID = 19,
+ OP_TYPE_BOOL = 20,
+ OP_TYPE_INT = 21,
+ OP_TYPE_FLOAT = 22,
+ OP_TYPE_VECTOR = 23,
+ OP_TYPE_MATRIX = 24,
+ OP_TYPE_IMAGE = 25,
+ OP_TYPE_SAMPLED_IMAGE = 27,
+ OP_TYPE_ARRAY = 28,
+ OP_TYPE_STRUCT = 30,
+ OP_TYPE_POINTER = 32,
+ OP_CONSTANT_TRUE = 41,
+ OP_CONSTANT_FALSE = 42,
+ OP_CONSTANT = 43,
+ OP_SPEC_CONSTANT_TRUE = 48,
+ OP_SPEC_CONSTANT_FALSE = 49,
+ OP_SPEC_CONSTANT = 50,
+ OP_VARIABLE = 59,
+ OP_DECORATE = 71,
+ OP_MEMBER_DECORATE = 72,
+
+ DECO_SPEC_ID = 1,
+ DECO_ARRAY_STRIDE = 6,
+ DECO_MATRIX_STRIDE = 7,
+ DECO_LOCATION = 30,
+ DECO_BINDING = 33,
+ DECO_DESCRIPTOR_SET = 34,
+ DECO_OFFSET = 35
+};
+
namespace Msp {
namespace GL {
#endif
}
+
+SpirVModule::SpirVModule(const SpirVModule &other):
+ code(other.code),
+ entry_points(other.entry_points),
+ structs(other.structs),
+ variables(other.variables)
+{
+ remap_pointers_from(other);
+}
+
+SpirVModule &SpirVModule::operator=(const SpirVModule &other)
+{
+ code = other.code;
+ entry_points = other.entry_points;
+ structs = other.structs;
+ variables = other.variables;
+ remap_pointers_from(other);
+ return *this;
+}
+
+void SpirVModule::remap_pointers_from(const SpirVModule &other)
+{
+ for(vector<EntryPoint>::iterator i=entry_points.begin(); i!=entry_points.end(); ++i)
+ for(vector<const Variable *>::iterator j=i->globals.begin(); j!=i->globals.end(); ++j)
+ *j = &variables[*j-&other.variables.front()];
+
+ for(vector<Variable>::iterator i=variables.begin(); i!=variables.end(); ++i)
+ if(i->struct_type)
+ i->struct_type = &structs[i->struct_type-&other.structs.front()];
+
+ for(vector<Structure>::iterator i=structs.begin(); i!=structs.end(); ++i)
+ for(vector<StructMember>::iterator j=i->members.begin(); j!=i->members.end(); ++j)
+ if(j->struct_type)
+ j->struct_type = &structs[j->struct_type-&other.structs.front()];
+}
+
+void SpirVModule::load_code(IO::Base &io)
+{
+ UInt32 buffer[1024];
+ while(1)
+ {
+ unsigned len = io.read(reinterpret_cast<char *>(buffer), sizeof(buffer));
+ if(!len)
+ break;
+ len /= 4;
+ code.reserve(code.size()+len);
+ code.insert(code.end(), buffer, buffer+len);
+ }
+
+ if(code.empty())
+ throw invalid_module("Empty SPIR-V code");
+
+ if(code[0]==SPIRV_MAGIC_REVERSED)
+ {
+ for(vector<UInt32>::iterator i=code.begin(); i!=code.end(); ++i)
+ *i = ((*i&0xFF)<<24) || ((*i&0xFF00)<<8) | ((*i>>8)&0xFF00) | ((*i>>24)&0xFF);
+ }
+ else if(code[0]!=SPIRV_MAGIC)
+ throw invalid_module("SPIR-V magic number not found");
+
+ Reflection reflection;
+ reflection.reflect_code(code);
+
+ map<const Structure *, unsigned> struct_indices;
+ structs.reserve(reflection.structs.size());
+ for(map<unsigned, Structure>::const_iterator i=reflection.structs.begin(); i!=reflection.structs.end(); ++i)
+ {
+ struct_indices[&i->second] = structs.size();
+ structs.push_back(i->second);
+ }
+
+ for(vector<Structure>::iterator i=structs.begin(); i!=structs.end(); ++i)
+ {
+ for(vector<StructMember>::iterator j=i->members.begin(); j!=i->members.end(); ++j)
+ {
+ if(j->struct_type)
+ {
+ map<const Structure *, unsigned>::const_iterator k = struct_indices.find(j->struct_type);
+ j->struct_type = (k!=struct_indices.end() ? &structs[k->second] : 0);
+ }
+ }
+
+ const StructMember *last_member = &i->members.back();
+ unsigned last_offset = last_member->offset;
+ while(last_member->struct_type)
+ {
+ const StructMember *lm = &last_member->struct_type->members.back();
+ if(last_member->array_size)
+ last_offset += last_member->array_stride*(last_member->array_size-1);
+ last_offset += lm->offset;
+ last_member = lm;
+ }
+
+ i->size = last_offset+get_type_size(last_member->type);
+ i->size = (i->size+15)&~15;
+ }
+
+ map<const Variable *, unsigned> var_indices;
+ variables.reserve(reflection.variables.size());
+ for(map<unsigned, Variable>::const_iterator i=reflection.variables.begin(); i!=reflection.variables.end(); ++i)
+ {
+ int dup_index = -1;
+ for(vector<Variable>::const_iterator j=variables.begin(); (dup_index<0 && j!=variables.end()); ++j)
+ if(*j==i->second)
+ dup_index = j-variables.begin();
+
+ if(dup_index>=0)
+ var_indices[&i->second] = dup_index;
+ else
+ {
+ var_indices[&i->second] = variables.size();
+ variables.push_back(i->second);
+ }
+ }
+
+ for(vector<Variable>::iterator i=variables.begin(); i!=variables.end(); ++i)
+ if(i->struct_type)
+ {
+ map<const Structure *, unsigned>::const_iterator j = struct_indices.find(i->struct_type);
+ i->struct_type = (j!=struct_indices.end() ? &structs[j->second] : 0);
+ }
+
+ entry_points.reserve(reflection.entry_points.size());
+ for(map<unsigned, EntryPoint>::const_iterator i=reflection.entry_points.begin(); i!=reflection.entry_points.end(); ++i)
+ {
+ entry_points.push_back(i->second);
+ EntryPoint &entry = entry_points.back();
+ for(vector<const Variable *>::iterator j=entry.globals.begin(); j!=entry.globals.end(); ++j)
+ {
+ map<const Variable *, unsigned>::const_iterator k = var_indices.find(*j);
+ *j = (k!=var_indices.end() ? &variables[k->second] : 0);
+ }
+ }
+
+ for(map<unsigned, SpecConstant>::const_iterator i=reflection.spec_constants.begin(); i!=reflection.spec_constants.end(); ++i)
+ spec_constants.push_back(i->second);
+}
+
+void SpirVModule::compile(SL::Compiler &)
+{
+ throw logic_error("Not implemented yet");
+}
+
+
+SpirVModule::EntryPoint::EntryPoint():
+ stage(VERTEX)
+{ }
+
+
+SpirVModule::StructMember::StructMember():
+ type(VOID),
+ struct_type(0),
+ offset(0),
+ array_size(0),
+ array_stride(0),
+ matrix_stride(0)
+{ }
+
+
+SpirVModule::Variable::Variable():
+ type(VOID),
+ struct_type(0),
+ location(-1),
+ descriptor_set(-1),
+ binding(-1)
+{ }
+
+bool SpirVModule::Variable::operator==(const Variable &other) const
+{
+ if(storage!=UNIFORM_CONSTANT && storage!=UNIFORM)
+ return false;
+ if(storage!=other.storage || type!=other.type || struct_type!=other.struct_type)
+ return false;
+ if(location!=other.location || descriptor_set!=other.descriptor_set || binding!=other.binding)
+ return false;
+ return true;
+}
+
+
+SpirVModule::TypeInfo::TypeInfo():
+ type(VOID),
+ struct_type(0),
+ array_size(0),
+ array_stride(0),
+ storage(static_cast<StorageClass>(-1))
+{ }
+
+
+UInt32 SpirVModule::Reflection::get_opcode(UInt32 op)
+{
+ return op&0xFFFF;
+}
+
+SpirVModule::Reflection::CodeIterator SpirVModule::Reflection::get_op_end(const CodeIterator &op)
+{
+ return op+(*op>>16);
+}
+
+string SpirVModule::Reflection::read_string(CodeIterator &op, const CodeIterator &op_end)
+{
+ string result;
+ for(; op!=op_end; ++op)
+ {
+ unsigned word = *op;
+ for(unsigned i=0; i<4; ++i)
+ {
+ char c = word&0xFF;
+ if(!c)
+ {
+ ++op;
+ return result;
+ }
+ result += c;
+ word >>= 8;
+ }
+ }
+
+ throw invalid_module("Unterminated SPIR-V string literal");
+}
+
+void SpirVModule::Reflection::reflect_code(const vector<UInt32> &code)
+{
+ for(CodeIterator op=code.begin()+5; op!=code.end(); )
+ {
+ unsigned word_count = *op>>16;
+ if(word_count>code.end()-op)
+ throw invalid_module("Truncated SPIR-V instruction");
+
+ switch(get_opcode(*op))
+ {
+ case OP_NAME: reflect_name(op); break;
+ case OP_MEMBER_NAME: reflect_member_name(op); break;
+ case OP_ENTRY_POINT: reflect_entry_point(op); break;
+ case OP_TYPE_VOID: reflect_void_type(op); break;
+ case OP_TYPE_BOOL: reflect_bool_type(op); break;
+ case OP_TYPE_INT: reflect_int_type(op); break;
+ case OP_TYPE_FLOAT: reflect_float_type(op); break;
+ case OP_TYPE_VECTOR: reflect_vector_type(op); break;
+ case OP_TYPE_MATRIX: reflect_vector_type(op); break;
+ case OP_TYPE_IMAGE: reflect_image_type(op); break;
+ case OP_TYPE_SAMPLED_IMAGE: reflect_sampled_image_type(op); break;
+ case OP_TYPE_ARRAY: reflect_array_type(op); break;
+ case OP_TYPE_STRUCT: reflect_struct_type(op); break;
+ case OP_TYPE_POINTER: reflect_pointer_type(op); break;
+ case OP_CONSTANT_TRUE: constants[*(op+2)] = true; break;
+ case OP_CONSTANT_FALSE: constants[*(op+2)] = false; break;
+ case OP_CONSTANT: reflect_constant(op); break;
+ case OP_SPEC_CONSTANT_TRUE:
+ case OP_SPEC_CONSTANT_FALSE:
+ case OP_SPEC_CONSTANT: reflect_spec_constant(op); break;
+ case OP_VARIABLE: reflect_variable(op); break;
+ case OP_DECORATE: reflect_decorate(op); break;
+ case OP_MEMBER_DECORATE: reflect_member_decorate(op); break;
+ }
+
+ op += word_count;
+ }
+}
+
+void SpirVModule::Reflection::reflect_name(CodeIterator op)
+{
+ CodeIterator op_end = get_op_end(op);
+ string &name = names[*(op+1)];
+ op += 2;
+ name = read_string(op, op_end);
+}
+
+void SpirVModule::Reflection::reflect_member_name(CodeIterator op)
+{
+ CodeIterator op_end = get_op_end(op);
+ Structure &strct = structs[*(op+1)];
+ unsigned index = *(op+2);
+ if(index>=strct.members.size())
+ strct.members.resize(index+1);
+ op += 3;
+ strct.members[index].name = read_string(op, op_end);
+}
+
+void SpirVModule::Reflection::reflect_entry_point(CodeIterator op)
+{
+ CodeIterator op_end = get_op_end(op);
+ EntryPoint &entry = entry_points[*(op+2)];
+ entry.stage = static_cast<Stage>(*(op+1)); // Execution model in SPIR-V spec
+ op += 3;
+ entry.name = read_string(op, op_end);
+
+ entry.globals.reserve(op_end-op);
+ for(; op!=op_end; ++op)
+ entry.globals.push_back(&variables[*op]);
+}
+
+void SpirVModule::Reflection::reflect_void_type(CodeIterator op)
+{
+ types[*(op+1)].type = VOID;
+}
+
+void SpirVModule::Reflection::reflect_bool_type(CodeIterator op)
+{
+ types[*(op+1)].type = BOOL;
+}
+
+void SpirVModule::Reflection::reflect_int_type(CodeIterator op)
+{
+ TypeInfo &type = types[*(op+1)];
+ unsigned size = *(op+2);
+ bool sign = *(op+3);
+ type.type = static_cast<DataType>(size/8 | sign*0x100);
+}
+
+void SpirVModule::Reflection::reflect_float_type(CodeIterator op)
+{
+ TypeInfo &type = types[*(op+1)];
+ unsigned size = *(op+2);
+ type.type = static_cast<DataType>(size/8 | 0x300);
+}
+
+void SpirVModule::Reflection::reflect_vector_type(CodeIterator op)
+{
+ TypeInfo &type = types[*(op+1)];
+ DataType component = types[*(op+2)].type;
+ unsigned count = *(op+3);
+ type.type = static_cast<DataType>((count<<12) | (component&0xF00) | ((component&0xFF)*count));
+}
+
+void SpirVModule::Reflection::reflect_matrix_type(CodeIterator op)
+{
+ TypeInfo &type = types[*(op+1)];
+ DataType column = types[*(op+2)].type;
+ unsigned count = *(op+3);
+ type.type = static_cast<DataType>((count<<16) | (column&0xF00) | ((column&0xFF)*count));
+}
+
+void SpirVModule::Reflection::reflect_image_type(CodeIterator op)
+{
+ TypeInfo &type = types[*(op+1)];
+ DataType sample = types[*(op+2)].type;
+ unsigned dimensions = *(op+3);
+ bool depth = *(op+4)==1;
+ bool array = *(op+5);
+ type.type = static_cast<DataType>((depth*0x200000) | (array*0x80000) | (dimensions+1) | sample);
+}
+
+void SpirVModule::Reflection::reflect_sampled_image_type(CodeIterator op)
+{
+ TypeInfo &type = types[*(op+1)];
+ DataType image = types[*(op+2)].type;
+ type.type = static_cast<DataType>(image | 0x100000);
+}
+
+void SpirVModule::Reflection::reflect_array_type(CodeIterator op)
+{
+ TypeInfo &type = types[*(op+1)];
+ const TypeInfo &elem = types[*(op+2)];
+ type.type = elem.type;
+ type.struct_type = elem.struct_type;
+ const Variant &size = constants[*(op+3)];
+ if(size.check_type<int>())
+ type.array_size = size.value<int>();
+ else if(size.check_type<unsigned>())
+ type.array_size = size.value<unsigned>();
+}
+
+void SpirVModule::Reflection::reflect_struct_type(CodeIterator op)
+{
+ CodeIterator op_end = get_op_end(op);
+ unsigned id = *(op+1);
+ Structure &strct = structs[id];
+ strct.name = names[id];
+ types[id].struct_type = &strct;
+ op += 2;
+
+ strct.members.resize(op_end-op);
+ vector<StructMember>::iterator mem = strct.members.begin();
+ for(; op!=op_end; ++op, ++mem)
+ {
+ TypeInfo &type = types[*op];
+ mem->type = type.type;
+ mem->struct_type = type.struct_type;
+ mem->array_size = type.array_size;
+ mem->array_stride = type.array_stride;
+ }
+}
+
+void SpirVModule::Reflection::reflect_pointer_type(CodeIterator op)
+{
+ TypeInfo &type = types[*(op+1)];
+ type = types[*(op+3)];
+ type.storage = static_cast<StorageClass>(*(op+2));
+}
+
+void SpirVModule::Reflection::reflect_constant(CodeIterator op)
+{
+ const TypeInfo &type = types[*(op+1)];
+ unsigned id = *(op+2);
+ if(type.type==INT)
+ constants[id] = static_cast<int>(*(op+3));
+ else if(type.type==UNSIGNED_INT)
+ constants[id] = static_cast<unsigned>(*(op+3));
+ else if(type.type==FLOAT)
+ constants[id] = *reinterpret_cast<const float *>(&*(op+3));
+}
+
+void SpirVModule::Reflection::reflect_spec_constant(CodeIterator op)
+{
+ unsigned id = *(op+2);
+ SpecConstant &spec = spec_constants[id];
+ spec.name = names[id];
+ spec.type = types[*(op+1)].type;
+}
+
+void SpirVModule::Reflection::reflect_variable(CodeIterator op)
+{
+ unsigned id = *(op+2);
+ Variable &var = variables[id];
+ var.name = names[id];
+ const TypeInfo &type = types[*(op+1)];
+ var.storage = type.storage;
+ var.type = type.type;
+ var.struct_type = type.struct_type;
+ var.array_size = type.array_size;
+}
+
+void SpirVModule::Reflection::reflect_decorate(CodeIterator op)
+{
+ unsigned id = *(op+1);
+ unsigned decoration = *(op+2);
+ op += 3;
+
+ switch(decoration)
+ {
+ case DECO_SPEC_ID:
+ spec_constants[id].constant_id = *op;
+ break;
+ case DECO_ARRAY_STRIDE:
+ types[id].array_stride = *op;
+ break;
+ case DECO_LOCATION:
+ variables[id].location = *op;
+ break;
+ case DECO_BINDING:
+ variables[id].binding = *op;
+ break;
+ case DECO_DESCRIPTOR_SET:
+ variables[id].descriptor_set = *op;
+ break;
+ }
+}
+
+void SpirVModule::Reflection::reflect_member_decorate(CodeIterator op)
+{
+ Structure &strct = structs[*(op+1)];
+ unsigned index = *(op+2);
+ if(index>=strct.members.size())
+ strct.members.resize(index+1);
+ unsigned decoration = *(op+3);
+ op += 4;
+
+ StructMember &member = strct.members[index];
+ switch(decoration)
+ {
+ case DECO_MATRIX_STRIDE:
+ member.matrix_stride = *op;
+ break;
+ case DECO_OFFSET:
+ member.offset = *op;
+ break;
+ }
+}
+
} // namespace GL
} // namespace Msp
projects / libs / gl.git / blobdiff