src/gallium/include/state_tracker/drm_api.h

   1
   2 #ifndef _DRM_API_H_
   3 #define _DRM_API_H_
   4
   5 #include "pipe/p_compiler.h"
   6
   7 struct pipe_screen;
   8 struct pipe_winsys;
   9 struct pipe_buffer;
  10 struct pipe_context;
  11 struct pipe_texture;
  12
  13 enum drm_create_screen_mode {
  14         DRM_CREATE_NORMAL = 0,
  15         DRM_CREATE_DRI1,
  16         DRM_CREATE_DRIVER = 1024,
  17         DRM_CREATE_MAX
  18 };
  19
  20 #define DRM_API_HANDLE_TYPE_SHARED 0
  21 #define DRM_API_HANDLE_TYPE_KMS    1
  22
  23 /**
  24  * For use with pipe_screen::{texture_from_handle|texture_get_handle}.
  25  */
  26 struct winsys_handle
  27 {
  28         /**
  29          * Unused for texture_from_handle, always DRM_API_HANDLE_TYPE_SHARED.
  30          * Input to texture_get_handle, use TEXTURE_USAGE to select handle for kms or ipc.
  31          */
  32         unsigned type;
  33         /**
  34          * Input to texture_from_handle.
  35          * Output for texture_get_handle.
  36          */
  37         unsigned handle;
  38         /**
  39          * Input to texture_from_handle.
  40          * Output for texture_get_handle.
  41          */
  42         unsigned stride;
  43 };
  44
  45 /**
  46  * Modes other than DRM_CREATE_NORMAL derive from this struct.
  47  */
  48 /*@{*/
  49 struct drm_create_screen_arg {
  50         enum drm_create_screen_mode mode;
  51 };
  52 /*@}*/
  53
  54 struct drm_api
  55 {
  56         void (*destroy)(struct drm_api *api);
  57
  58         const char *name;
  59
  60         /**
  61          * Kernel driver name, as accepted by drmOpenByName.
  62          */
  63         const char *driver_name;
  64
  65         /**
  66          * Create a pipe srcreen.
  67          */
  68         struct pipe_screen*  (*create_screen)(struct drm_api *api, int drm_fd,
  69                                               struct drm_create_screen_arg *arg);
  70 };
  71
  72 extern struct drm_api * drm_api_create(void);
  73
  74 #endif