X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fcore%2Fmodule.h;h=16e07053ea4abd427fac950b0b09da2bb89c6ac9;hp=78afcfc9823997161644c1d51e4eb5830a1c008f;hb=f73e671dcb36c097647cddbf5b1eaaad2ffc9299;hpb=c93e0613e96ec6817e26b533e90dc49d45787941 diff --git a/source/core/module.h b/source/core/module.h index 78afcfc9..16e07053 100644 --- a/source/core/module.h +++ b/source/core/module.h @@ -1,38 +1,70 @@ #ifndef MSP_GL_MODULE_H_ #define MSP_GL_MODULE_H_ +#include #include +#include #include +#include "datatype.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() { } + Module() = default; public: - virtual ~Module() { } + virtual ~Module() = default; virtual Format get_format() const = 0; + /** Sets the module's content from GLSL source code. */ void set_source(const std::string &); - void load_source(IO::Base &, Resources *, 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: @@ -50,6 +82,174 @@ public: 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: + enum Stage + { + VERTEX = 0, + GEOMETRY = 3, + FRAGMENT = 4 + }; + + enum StorageClass + { + UNIFORM_CONSTANT = 0, + INPUT = 1, + UNIFORM = 2, + OUTPUT = 3 + }; + + 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 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 members; + unsigned size = 0; + }; + + struct Variable + { + std::string name; + StorageClass storage = static_cast(-1); + DataType type = VOID; + const Structure *struct_type = 0; + unsigned array_size = 0; + int location = -1; + int descriptor_set = -1; + 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(-1); + }; + + struct Reflection + { + typedef std::vector::const_iterator CodeIterator; + + std::map names; + std::map constants; + std::map types; + std::map entry_points; + std::map structs; + std::map 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 &); + 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 code; + std::vector entry_points; + std::vector structs; + std::vector variables; + std::vector spec_constants; + +public: + SpirVModule() = default; + SpirVModule(const SpirVModule &); + SpirVModule &operator=(const SpirVModule &); +private: + void remap_pointers_from(const SpirVModule &); + +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 &get_code() const { return code; } + const std::vector &get_entry_points() const { return entry_points; } + const std::vector &get_variables() const { return variables; } + const std::vector &get_spec_constants() const { return spec_constants; } +}; + } // namespace GL } // namespace Msp