src/mesa/state_tracker/st_cb_bufferobjects.h

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  27
  28 #ifndef ST_CB_BUFFEROBJECTS_H
  29 #define ST_CB_BUFFEROBJECTS_H
  30
  31 struct st_context;
  32 struct gl_buffer_object;
  33 struct pipe_buffer;
  34
  35 /**
  36  * State_tracker vertex/pixel buffer object, derived from Mesa's
  37  * gl_buffer_object.
  38  */
  39 struct st_buffer_object
  40 {
  41    struct gl_buffer_object Base;
  42    struct pipe_buffer *buffer;
  43    GLsizeiptrARB size;
  44 };
  45
  46
  47 /* Are the obj->Name tests necessary?  Unfortunately yes, mesa
  48  * allocates a couple of gl_buffer_object structs statically, and the
  49  * Name == 0 test is the only way to identify them and avoid casting
  50  * them erroneously to our structs.
  51  */
  52 static INLINE struct st_buffer_object *
  53 st_buffer_object(struct gl_buffer_object *obj)
  54 {
  55    if (obj->Name)
  56       return (struct st_buffer_object *) obj;
  57    else
  58       return NULL;
  59 }
  60
  61
  62 extern void
  63 st_init_bufferobject_functions(struct dd_function_table *functions);
  64
  65
  66 #endif