src/mesa/drivers/dri/i965/intel_buffer_objects.h

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  27
  28 #ifndef INTEL_BUFFEROBJ_H
  29 #define INTEL_BUFFEROBJ_H
  30
  31 #include "mtypes.h"
  32
  33 struct intel_context;
  34 struct gl_buffer_object;
  35
  36
  37 /**
  38  * Intel vertex/pixel buffer object, derived from Mesa's gl_buffer_object.
  39  */
  40 struct intel_buffer_object {
  41    struct gl_buffer_object Base;
  42    dri_bo *buffer;   /* the low-level buffer manager's buffer handle */
  43
  44    struct intel_region *region; /* Is there a zero-copy texture
  45                                    associated with this (pixel)
  46                                    buffer object? */
  47 };
  48
  49
  50 /* Get the bm buffer associated with a GL bufferobject:
  51  */
  52 dri_bo *intel_bufferobj_buffer( const struct intel_buffer_object *obj );
  53
  54 /* Hook the bufferobject implementation into mesa:
  55  */
  56 void intel_bufferobj_init( struct intel_context *intel );
  57
  58
  59
  60 /* Are the obj->Name tests necessary?  Unfortunately yes, mesa
  61  * allocates a couple of gl_buffer_object structs statically, and
  62  * the Name == 0 test is the only way to identify them and avoid
  63  * casting them erroneously to our structs.
  64  */
  65 static inline struct intel_buffer_object *
  66 intel_buffer_object( struct gl_buffer_object *obj )
  67 {
  68    if (obj->Name)
  69       return (struct intel_buffer_object *)obj;
  70    else
  71       return NULL;
  72 }
  73
  74 #endif