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Simple DirectMedia Layer
Copyright (C) 1997-2020 Sam Lantinga <>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
#include "../../SDL_internal.h"
#include "../SDL_sysvideo.h"
#include <fcntl.h>
#include <unistd.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <gbm.h>
#include <assert.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
typedef struct SDL_VideoData
int devindex; /* device index that was passed on creation */
int drm_fd; /* DRM file desc */
struct gbm_device *gbm_dev;
SDL_Window **windows;
int max_windows;
int num_windows;
} SDL_VideoData;
typedef struct SDL_DisplayModeData
int mode_index;
} SDL_DisplayModeData;
typedef struct SDL_DisplayData
drmModeModeInfo mode;
uint32_t plane_id;
uint32_t cusor_plane_id;
uint32_t crtc_id;
uint32_t connector_id;
uint32_t atomic_flags;
/* All changes will be requested via this one and only atomic request,
that will be sent to the kernel in the one and only atomic_commit() call
that takes place in SwapWindow(). */
drmModeAtomicReq *atomic_req;
drmModePlane *plane;
drmModeObjectProperties *plane_props;
drmModePropertyRes **plane_props_info;
drmModePlane *cursor_plane;
drmModeObjectProperties *cursor_plane_props;
drmModePropertyRes **cursor_plane_props_info;
drmModeCrtc *crtc;
drmModeObjectProperties *crtc_props;
drmModePropertyRes **crtc_props_info;
drmModeConnector *connector;
drmModeObjectProperties *connector_props;
drmModePropertyRes **connector_props_info;
int kms_in_fence_fd;
int kms_out_fence_fd;
EGLSyncKHR kms_fence; /* Signaled when kms completes changes requested in atomic iotcl (pageflip, etc). */
EGLSyncKHR gpu_fence; /* Signaled when GPU rendering is done. */
} SDL_DisplayData;
typedef struct SDL_WindowData
SDL_VideoData *viddata;
struct gbm_surface *gs;
struct gbm_bo *bo;
struct gbm_bo *next_bo;
struct gbm_bo *crtc_bo;
SDL_bool egl_surface_dirty;
EGLSurface egl_surface;
} SDL_WindowData;
typedef struct KMSDRM_FBInfo
int drm_fd; /* DRM file desc */
uint32_t fb_id; /* DRM framebuffer ID */
/* Helper functions */
int KMSDRM_CreateSurfaces(_THIS, SDL_Window * window);
KMSDRM_FBInfo *KMSDRM_FBFromBO(_THIS, struct gbm_bo *bo);
/* Atomic functions that are used from SDL_kmsdrmopengles.c */
void drm_atomic_request_modeset(_THIS);
void drm_atomic_request_pageflip(_THIS, uint32_t fb_id);
int drm_atomic_commit(_THIS, SDL_bool blocking);
void drm_atomic_wait_pending(_THIS);
/* SDL_VideoDevice functions declaration */
/* Display and window functions */
int KMSDRM_VideoInit(_THIS);
void KMSDRM_VideoQuit(_THIS);
void KMSDRM_GetDisplayModes(_THIS, SDL_VideoDisplay * display);
int KMSDRM_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode);
int KMSDRM_CreateWindow(_THIS, SDL_Window * window);
int KMSDRM_CreateWindowFrom(_THIS, SDL_Window * window, const void *data);
void KMSDRM_SetWindowTitle(_THIS, SDL_Window * window);
void KMSDRM_SetWindowIcon(_THIS, SDL_Window * window, SDL_Surface * icon);
void KMSDRM_SetWindowPosition(_THIS, SDL_Window * window);
void KMSDRM_SetWindowSize(_THIS, SDL_Window * window);
void KMSDRM_ShowWindow(_THIS, SDL_Window * window);
void KMSDRM_HideWindow(_THIS, SDL_Window * window);
void KMSDRM_RaiseWindow(_THIS, SDL_Window * window);
void KMSDRM_MaximizeWindow(_THIS, SDL_Window * window);
void KMSDRM_MinimizeWindow(_THIS, SDL_Window * window);
void KMSDRM_RestoreWindow(_THIS, SDL_Window * window);
void KMSDRM_SetWindowGrab(_THIS, SDL_Window * window, SDL_bool grabbed);
void KMSDRM_DestroyWindow(_THIS, SDL_Window * window);
/* Window manager function */
SDL_bool KMSDRM_GetWindowWMInfo(_THIS, SDL_Window * window,
struct SDL_SysWMinfo *info);
/* OpenGL/OpenGL ES functions */
int KMSDRM_GLES_LoadLibrary(_THIS, const char *path);
void *KMSDRM_GLES_GetProcAddress(_THIS, const char *proc);
void KMSDRM_GLES_UnloadLibrary(_THIS);
SDL_GLContext KMSDRM_GLES_CreateContext(_THIS, SDL_Window * window);
int KMSDRM_GLES_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context);
int KMSDRM_GLES_SetSwapInterval(_THIS, int interval);
int KMSDRM_GLES_GetSwapInterval(_THIS);
int KMSDRM_GLES_SwapWindow(_THIS, SDL_Window * window);
void KMSDRM_GLES_DeleteContext(_THIS, SDL_GLContext context);
#endif /* __SDL_KMSDRMVIDEO_H__ */
/* vi: set ts=4 sw=4 expandtab: */