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      1 
      2 #ifndef U_TRANSFER_H
      3 #define U_TRANSFER_H
      4 
      5 /* Fallback implementations for inline read/writes which just go back
      6  * to the regular transfer behaviour.
      7  */
      8 #include "pipe/p_state.h"
      9 
     10 struct pipe_context;
     11 struct winsys_handle;
     12 
     13 #ifdef __cplusplus
     14 extern "C" {
     15 #endif
     16 
     17 boolean u_default_resource_get_handle(struct pipe_screen *screen,
     18                                       struct pipe_resource *resource,
     19                                       struct winsys_handle *handle);
     20 
     21 void u_default_buffer_subdata(struct pipe_context *pipe,
     22                               struct pipe_resource *resource,
     23                               unsigned usage, unsigned offset,
     24                               unsigned size, const void *data);
     25 
     26 void u_default_texture_subdata(struct pipe_context *pipe,
     27                                struct pipe_resource *resource,
     28                                unsigned level,
     29                                unsigned usage,
     30                                const struct pipe_box *box,
     31                                const void *data,
     32                                unsigned stride,
     33                                unsigned layer_stride);
     34 
     35 void u_default_transfer_flush_region( struct pipe_context *pipe,
     36                                       struct pipe_transfer *transfer,
     37                                       const struct pipe_box *box);
     38 
     39 void u_default_transfer_unmap( struct pipe_context *pipe,
     40                                struct pipe_transfer *transfer );
     41 
     42 
     43 
     44 /* Useful helper to allow >1 implementation of resource functionality
     45  * to exist in a single driver.  This is intended to be transitionary!
     46  */
     47 struct u_resource_vtbl {
     48 
     49    boolean (*resource_get_handle)(struct pipe_screen *,
     50                                   struct pipe_resource *tex,
     51                                   struct winsys_handle *handle);
     52 
     53    void (*resource_destroy)(struct pipe_screen *,
     54                             struct pipe_resource *pt);
     55 
     56    void *(*transfer_map)(struct pipe_context *,
     57                          struct pipe_resource *resource,
     58                          unsigned level,
     59                          unsigned usage,
     60                          const struct pipe_box *,
     61                          struct pipe_transfer **);
     62 
     63 
     64    void (*transfer_flush_region)( struct pipe_context *,
     65                                   struct pipe_transfer *transfer,
     66                                   const struct pipe_box *);
     67 
     68    void (*transfer_unmap)( struct pipe_context *,
     69                            struct pipe_transfer *transfer );
     70 };
     71 
     72 
     73 struct u_resource {
     74    struct pipe_resource b;
     75    const struct u_resource_vtbl *vtbl;
     76 };
     77 
     78 
     79 boolean u_resource_get_handle_vtbl(struct pipe_screen *screen,
     80                                    struct pipe_context *ctx,
     81                                    struct pipe_resource *resource,
     82                                    struct winsys_handle *handle,
     83                                    unsigned usage);
     84 
     85 void u_resource_destroy_vtbl(struct pipe_screen *screen,
     86                              struct pipe_resource *resource);
     87 
     88 void *u_transfer_map_vtbl(struct pipe_context *context,
     89                           struct pipe_resource *resource,
     90                           unsigned level,
     91                           unsigned usage,
     92                           const struct pipe_box *box,
     93                           struct pipe_transfer **transfer);
     94 
     95 void u_transfer_flush_region_vtbl( struct pipe_context *pipe,
     96                                    struct pipe_transfer *transfer,
     97                                    const struct pipe_box *box);
     98 
     99 void u_transfer_unmap_vtbl( struct pipe_context *rm_ctx,
    100                             struct pipe_transfer *transfer );
    101 
    102 #ifdef __cplusplus
    103 } // extern "C" {
    104 #endif
    105 
    106 #endif
    107