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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 bool 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    bool (*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 bool 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