diff options
| -rwxr-xr-x[-rw-r--r--] | frontend/libretro.h | 88 |
1 files changed, 76 insertions, 12 deletions
diff --git a/frontend/libretro.h b/frontend/libretro.h index 0c39e6e..b02855a 100644..100755 --- a/frontend/libretro.h +++ b/frontend/libretro.h @@ -333,6 +333,8 @@ enum retro_mod RETROKMOD_DUMMY = INT_MAX // Ensure sizeof(enum) == sizeof(int) }; +// If set, this call is not part of the public libretro API yet. It can change or be removed at any time. +#define RETRO_ENVIRONMENT_EXPERIMENTAL 0x10000 // Environment commands. #define RETRO_ENVIRONMENT_SET_ROTATION 1 // const unsigned * -- @@ -348,18 +350,7 @@ enum retro_mod // Boolean value whether or not frontend supports frame duping, // passing NULL to video frame callback. // -#define RETRO_ENVIRONMENT_GET_VARIABLE 4 // struct retro_variable * -- - // Interface to aquire user-defined information from environment - // that cannot feasibly be supported in a multi-system way. - // Mostly used for obscure, - // specific features that the user can tap into when neseccary. - // -#define RETRO_ENVIRONMENT_SET_VARIABLES 5 // const struct retro_variable * -- - // Allows an implementation to signal the environment - // which variables it might want to check for later using GET_VARIABLE. - // 'data' points to an array of retro_variable structs terminated by a { NULL, NULL } element. - // retro_variable::value should contain a human readable description of the key. - // +// Environ 4, 5 are no longer supported (GET_VARIABLE / SET_VARIABLES), and reserved to avoid possible ABI clash. #define RETRO_ENVIRONMENT_SET_MESSAGE 6 // const struct retro_message * -- // Sets a message to be displayed in implementation-specific manner for a certain amount of 'frames'. // Should not be used for trivial messages, which should simply be logged to stderr. @@ -421,7 +412,80 @@ enum retro_mod // Sets an interface which frontend can use to eject and insert disk images. // This is used for games which consist of multiple images and must be manually // swapped out by the user (e.g. PSX). +#define RETRO_ENVIRONMENT_SET_HW_RENDER (14 | RETRO_ENVIRONMENT_EXPERIMENTAL) + // struct retro_hw_render_callback * -- + // NOTE: This call is currently very experimental, and should not be considered part of the public API. + // The interface could be changed or removed at any time. + // Sets an interface to let a libretro core render with hardware acceleration. + // Should be called in retro_load_game(). + // If successful, libretro cores will be able to render to a frontend-provided framebuffer. + // The size of this framebuffer will be at least as large as max_width/max_height provided in get_av_info(). + // If HW rendering is used, pass only RETRO_HW_FRAME_BUFFER_VALID or NULL to retro_video_refresh_t. +#define RETRO_ENVIRONMENT_GET_VARIABLE 15 + // struct retro_variable * -- + // Interface to aquire user-defined information from environment + // that cannot feasibly be supported in a multi-system way. + // 'key' should be set to a key which has already been set by SET_VARIABLES. + // 'data' will be set to a value or NULL. + // +#define RETRO_ENVIRONMENT_SET_VARIABLES 16 + // const struct retro_variable * -- + // Allows an implementation to signal the environment + // which variables it might want to check for later using GET_VARIABLE. + // This allows the frontend to present these variables to a user dynamically. + // This should be called as early as possible (ideally in retro_set_environment). + // + // 'data' points to an array of retro_variable structs terminated by a { NULL, NULL } element. + // retro_variable::key should be namespaced to not collide with other implementations' keys. E.g. A core called 'foo' should use keys named as 'foo_option'. + // retro_variable::value should contain a human readable description of the key as well as a '|' delimited list of expected values. + // The number of possible options should be very limited, i.e. it should be feasible to cycle through options without a keyboard. + // First entry should be treated as a default. + // + // Example entry: + // { "foo_option", "Speed hack coprocessor X; false|true" } + // + // Text before first ';' is description. This ';' must be followed by a space, and followed by a list of possible values split up with '|'. + // Only strings are operated on. The possible values will generally be displayed and stored as-is by the frontend. + // +#define RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE 17 + // bool * -- + // Result is set to true if some variables are updated by + // frontend since last call to RETRO_ENVIRONMENT_GET_VARIABLE. + // Variables should be queried with GET_VARIABLE. + +// Pass this to retro_video_refresh_t if rendering to hardware. +// Passing NULL to retro_video_refresh_t is still a frame dupe as normal. +#define RETRO_HW_FRAME_BUFFER_VALID ((void*)-1) + +// Invalidates the current HW context. +// If called, all GPU resources must be reinitialized. +// Usually called when frontend reinits video driver. +// Also called first time video driver is initialized, allowing libretro core to init resources. +typedef void (*retro_hw_context_reset_t)(void); +// Gets current framebuffer which is to be rendered to. Could change every frame potentially. +typedef uintptr_t (*retro_hw_get_current_framebuffer_t)(void); + +// Get a symbol from HW context. +typedef void (*retro_proc_address_t)(void); +typedef retro_proc_address_t (*retro_hw_get_proc_address_t)(const char *sym); + +enum retro_hw_context_type +{ + RETRO_HW_CONTEXT_NONE = 0, + RETRO_HW_CONTEXT_OPENGL, // OpenGL 2.x. Latest version available before 3.x+. + RETRO_HW_CONTEXT_OPENGLES2, // GLES 2.0 + + RETRO_HW_CONTEXT_DUMMY = INT_MAX +}; +struct retro_hw_render_callback +{ + enum retro_hw_context_type context_type; // Which API to use. Set by libretro core. + retro_hw_context_reset_t context_reset; // Set by libretro core. + retro_hw_get_current_framebuffer_t get_current_framebuffer; // Set by frontend. + retro_hw_get_proc_address_t get_proc_address; // Set by frontend. + bool depth; // Set if render buffers should have depth component attached. +}; // Callback type passed in RETRO_ENVIRONMENT_SET_KEYBOARD_CALLBACK. Called by the frontend in response to keyboard events. // down is set if the key is being pressed, or false if it is being released. |