#ifndef MSP_GL_MODULE_H_
#define MSP_GL_MODULE_H_
+#include <map>
#include <string>
+#include <vector>
#include <msp/io/base.h>
+#include "datatype.h"
+#include "module_backend.h"
+#include "glsl/compiler.h"
#include "glsl/sourcemap.h"
namespace Msp {
namespace GL {
+class invalid_module: public std::runtime_error
+{
+public:
+ invalid_module(const std::string &w): runtime_error(w) { }
+ virtual ~invalid_module() throw() { }
+};
+
class Resources;
+/**
+Base class for shader modules. Internal representation depends on the
+concrete type.
+
+Modules can be loaded from files.
+
+Applications normally use the Program class to access shaders.
+*/
class Module
{
+public:
+ enum Format
+ {
+ GLSL,
+ SPIR_V
+ };
+
+protected:
+ Module() = default;
+public:
+ virtual ~Module() = default;
+
+ virtual Format get_format() const = 0;
+
+ /** Sets the module's content from GLSL source code. */
+ void set_source(const std::string &);
+
+ /** Loads GLSL source from a file or other I/O object. Any import
+ statements are resolved using res. */
+ void load_source(IO::Base &, Resources *res, const std::string &name);
+
+ /** Loads GLSL source from a file or other I/O object. Only builtin
+ shader fragments can be imported. */
+ void load_source(IO::Base &, const std::string &);
+
+private:
+ virtual void compile(SL::Compiler &) = 0;
+
+ SL::Features create_features() const;
+};
+
+/**
+A shader module in GLSL source code format.
+*/
+class GlslModule: public Module
+{
private:
std::string prepared_source;
SL::SourceMap source_map;
public:
- Module();
+ virtual Format get_format() const { return GLSL; }
- void set_source(const std::string &);
- void load_source(IO::Base &, Resources *, const std::string &);
- void load_source(IO::Base &, const std::string &);
+private:
+ virtual void compile(SL::Compiler &);
+public:
const std::string &get_prepared_source() const { return prepared_source; }
const SL::SourceMap &get_source_map() const { return source_map; }
};
+/**
+A shader module in SPIR-V binary format.
+
+When the module's contents are set from GLSL source, it will be automatically
+compiled to SPIR-V. Pre-compiled SPIR-V modules can also be loaded.
+
+Afterwards reflection data is available, providing information about variables
+forming the module's interface.
+*/
+class SpirVModule: public Module, public SpirVModuleBackend
+{
+public:
+ enum Stage
+ {
+ VERTEX = 0,
+ GEOMETRY = 3,
+ FRAGMENT = 4
+ };
+
+ enum StorageClass
+ {
+ UNIFORM_CONSTANT = 0,
+ INPUT = 1,
+ UNIFORM = 2,
+ OUTPUT = 3,
+ PUSH_CONSTANT = 9
+ };
+
+ enum BuiltinSemantic
+ {
+ NOT_BUILTIN = -1,
+ POSITION = 0,
+ CLIP_DISTANCE = 3,
+ LAYER = 9,
+ FRAG_DEPTH = 22
+ };
+
+ struct Constant;
+ struct Structure;
+ struct Variable;
+
+ struct EntryPoint
+ {
+ std::string name;
+ Stage stage = VERTEX;
+ std::vector<const Variable *> globals;
+ };
+
+ struct StructMember
+ {
+ std::string name;
+ DataType type = VOID;
+ const Structure *struct_type = 0;
+ unsigned offset = 0;
+ unsigned array_size = 0;
+ unsigned array_stride = 0;
+ unsigned matrix_stride = 0;
+ BuiltinSemantic builtin = NOT_BUILTIN;
+ };
+
+ struct Structure
+ {
+ std::string name;
+ std::vector<StructMember> members;
+ unsigned size = 0;
+ };
+
+ struct Variable
+ {
+ std::string name;
+ StorageClass storage = static_cast<StorageClass>(-1);
+ DataType type = VOID;
+ const Structure *struct_type = 0;
+ unsigned array_size = 0;
+ int location = -1;
+ unsigned descriptor_set = 0;
+ int binding = -1;
+ BuiltinSemantic builtin = NOT_BUILTIN;
+
+ bool operator==(const Variable &) const;
+ };
+
+ struct Constant
+ {
+ std::string name;
+ int constant_id = -1;
+ DataType type = VOID;
+ union
+ {
+ int i_value = 0;
+ float f_value;
+ };
+ };
+
+private:
+ struct TypeInfo
+ {
+ DataType type = VOID;
+ const Structure *struct_type = 0;
+ unsigned array_size = 0;
+ unsigned array_stride = 0;
+ StorageClass storage = static_cast<StorageClass>(-1);
+ };
+
+ struct Reflection
+ {
+ typedef std::vector<std::uint32_t>::const_iterator CodeIterator;
+
+ std::map<unsigned, std::string> names;
+ std::map<unsigned, Constant> constants;
+ std::map<unsigned, TypeInfo> types;
+ std::map<unsigned, EntryPoint> entry_points;
+ std::map<unsigned, Structure> structs;
+ std::map<unsigned, Variable> variables;
+
+ static std::uint32_t get_opcode(std::uint32_t);
+ static CodeIterator get_op_end(const CodeIterator &);
+ static std::string read_string(CodeIterator &, const CodeIterator &);
+
+ void reflect_code(const std::vector<std::uint32_t> &);
+ void reflect_name(CodeIterator);
+ void reflect_member_name(CodeIterator);
+ void reflect_entry_point(CodeIterator);
+ void reflect_void_type(CodeIterator);
+ void reflect_bool_type(CodeIterator);
+ void reflect_int_type(CodeIterator);
+ void reflect_float_type(CodeIterator);
+ void reflect_vector_type(CodeIterator);
+ void reflect_matrix_type(CodeIterator);
+ void reflect_image_type(CodeIterator);
+ void reflect_sampled_image_type(CodeIterator);
+ void reflect_array_type(CodeIterator);
+ void reflect_struct_type(CodeIterator);
+ void reflect_pointer_type(CodeIterator);
+ void reflect_constant(CodeIterator);
+ void reflect_variable(CodeIterator);
+ void reflect_decorate(CodeIterator);
+ void reflect_member_decorate(CodeIterator);
+ };
+
+ std::vector<std::uint32_t> code;
+ std::vector<EntryPoint> entry_points;
+ std::vector<Structure> structs;
+ std::vector<Variable> variables;
+ std::vector<Constant> spec_constants;
+
+public:
+ virtual Format get_format() const { return SPIR_V; }
+
+ /** Loads a SPIR-V binary from a file or other I/O object. */
+ void load_code(IO::Base &);
+private:
+ virtual void compile(SL::Compiler &);
+ void reflect();
+
+public:
+ const std::vector<std::uint32_t> &get_code() const { return code; }
+ const std::vector<EntryPoint> &get_entry_points() const { return entry_points; }
+ const std::vector<Variable> &get_variables() const { return variables; }
+ const std::vector<Constant> &get_spec_constants() const { return spec_constants; }
+};
+
} // namespace GL
} // namespace Msp
projects / libs / gl.git / blobdiff