mirror of
https://github.com/libretro/RetroArch.git
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137 lines
5.0 KiB
C
137 lines
5.0 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __GFX_CONTEXT_H
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#define __GFX_CONTEXT_H
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#include "../boolean.h"
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#include "../driver.h"
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#ifdef HAVE_CONFIG_H
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#include "../config.h"
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define MAX_EGLIMAGE_TEXTURES 32
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enum gfx_ctx_api
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{
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GFX_CTX_OPENGL_API,
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GFX_CTX_OPENGL_ES_API,
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GFX_CTX_DIRECT3D8_API,
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GFX_CTX_DIRECT3D9_API,
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GFX_CTX_OPENVG_API
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};
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typedef void (*gfx_ctx_proc_t)(void);
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// The opaque void* argument should be the overlying driver data (e.g. gl_t for OpenGL contexts).
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// This will allow us in the future to have separate contexts to separate gl_t structs (if needed).
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// For now, this is only relevant for D3D.
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typedef struct gfx_ctx_driver
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{
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bool (*init)(void *data);
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void (*destroy)(void *data);
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bool (*bind_api)(void *data, enum gfx_ctx_api, unsigned major, unsigned minor); // Which API to bind to.
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// Sets the swap interval.
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void (*swap_interval)(void *data, unsigned);
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// Sets video mode. Creates a window, etc.
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bool (*set_video_mode)(void*, unsigned, unsigned, bool);
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// Gets current window size.
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// If not initialized yet, it returns current screen size.
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void (*get_video_size)(void*, unsigned*, unsigned*);
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// Translates a window size to an aspect ratio.
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// In most cases this will be just width / height, but
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// some contexts will better know which actual aspect ratio is used.
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// This can be NULL to assume the default behavior.
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float (*translate_aspect)(void*, unsigned, unsigned);
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// Asks driver to update window title (FPS, etc).
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void (*update_window_title)(void*);
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// Queries for resize and quit events.
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// Also processes events.
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void (*check_window)(void*, bool*, bool*, unsigned*, unsigned*, unsigned);
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// Acknowledge a resize event. This is needed for some APIs. Most backends will ignore this.
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void (*set_resize)(void*, unsigned, unsigned);
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// Checks if window has input focus.
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bool (*has_focus)(void*);
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// Swaps buffers. VBlank sync depends on earlier calls to swap_interval.
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void (*swap_buffers)(void*);
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// Most video backends will want to use a certain input driver.
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// Checks for it here.
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void (*input_driver)(void*, const input_driver_t**, void**);
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// Wraps whatever gl_proc_address() there is.
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// Does not take opaque, to avoid lots of ugly wrapper code.
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gfx_ctx_proc_t (*get_proc_address)(const char*);
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#ifdef HAVE_EGL
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// Returns true if this context supports EGLImage buffers for screen drawing and was initalized correctly.
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bool (*init_egl_image_buffer)(void*, const video_info_t*);
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// Writes the frame to the EGLImage and sets image_handle to it. Returns true if a new image handle is created.
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// Always returns true the first time it's called for a new index. The graphics core must handle a change in the handle correctly.
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bool (*write_egl_image)(void*, const void *frame, unsigned width, unsigned height, unsigned pitch, bool rgb32, unsigned index, void **image_handle);
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#endif
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// Shows or hides mouse. Can be NULL if context doesn't have a concept of mouse pointer.
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void (*show_mouse)(void*, bool state);
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// Human readable string.
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const char *ident;
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// Optional. Binds HW-render offscreen context.
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void (*bind_hw_render)(void *data, bool enable);
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} gfx_ctx_driver_t;
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extern const gfx_ctx_driver_t gfx_ctx_sdl_gl;
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extern const gfx_ctx_driver_t gfx_ctx_x_egl;
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extern const gfx_ctx_driver_t gfx_ctx_wayland;
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extern const gfx_ctx_driver_t gfx_ctx_glx;
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extern const gfx_ctx_driver_t gfx_ctx_d3d9;
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extern const gfx_ctx_driver_t gfx_ctx_drm_egl;
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extern const gfx_ctx_driver_t gfx_ctx_mali_fbdev;
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extern const gfx_ctx_driver_t gfx_ctx_vivante_fbdev;
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extern const gfx_ctx_driver_t gfx_ctx_android;
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extern const gfx_ctx_driver_t gfx_ctx_ps3;
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extern const gfx_ctx_driver_t gfx_ctx_wgl;
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extern const gfx_ctx_driver_t gfx_ctx_videocore;
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extern const gfx_ctx_driver_t gfx_ctx_bbqnx;
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extern const gfx_ctx_driver_t gfx_ctx_apple;
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extern const gfx_ctx_driver_t gfx_ctx_emscripten;
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extern const gfx_ctx_driver_t gfx_ctx_null;
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const gfx_ctx_driver_t *gfx_ctx_find_driver(const char *ident); // Finds driver with ident. Does not initialize.
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const gfx_ctx_driver_t *gfx_ctx_init_first(void *data, enum gfx_ctx_api api, unsigned major, unsigned minor, bool hw_render_ctx); // Finds first suitable driver and initializes.
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#ifdef __cplusplus
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}
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#endif
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#endif
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