src/gallium/auxiliary/util/u_upload_mgr.h

   1 /**************************************************************************
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   3  * Copyright 2009 VMware, Inc.
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  16  * of the Software.
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  26  **************************************************************************/
  27
  28 /* Helper utility for uploading user buffers & other data, and
  29  * coalescing small buffers into larger ones.
  30  */
  31
  32 #ifndef U_UPLOAD_MGR_H
  33 #define U_UPLOAD_MGR_H
  34
  35 #include "pipe/p_defines.h"
  36
  37 struct pipe_screen;
  38 struct pipe_resource;
  39 struct u_upload_mgr;
  40
  41
  42 struct u_upload_mgr *u_upload_create( struct pipe_context *pipe,
  43                                       unsigned default_size,
  44                                       unsigned alignment,
  45                                       unsigned usage );
  46
  47 void u_upload_destroy( struct u_upload_mgr *upload );
  48
  49 /* Unmap and release old buffer.
  50  *
  51  * This must usually be called prior to firing the command stream
  52  * which references the upload buffer, as many memory managers either
  53  * don't like firing a mapped buffer or cause subsequent maps of a
  54  * fired buffer to wait.  For now, it's easiest just to grab a new
  55  * buffer.
  56  */
  57 void u_upload_flush( struct u_upload_mgr *upload );
  58
  59
  60 enum pipe_error u_upload_data( struct u_upload_mgr *upload,
  61                                unsigned size,
  62                                const void *data,
  63                                unsigned *out_offset,
  64                                struct pipe_resource **outbuf );
  65
  66
  67 enum pipe_error u_upload_buffer( struct u_upload_mgr *upload,
  68                                  unsigned offset,
  69                                  unsigned size,
  70                                  struct pipe_resource *inbuf,
  71                                  unsigned *out_offset,
  72                                  struct pipe_resource **outbuf );
  73
  74
  75
  76 #endif
  77