131 lines
4.7 KiB
C
131 lines
4.7 KiB
C
/**************************************************************************
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*
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* Copyright 2009 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/* Helper utility for uploading user buffers & other data, and
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* coalescing small buffers into larger ones.
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*/
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#ifndef U_UPLOAD_MGR_H
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#define U_UPLOAD_MGR_H
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#include "pipe/p_compiler.h"
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struct pipe_context;
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struct pipe_resource;
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/**
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* Create the upload manager.
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*
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* \param pipe Pipe driver.
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* \param default_size Minimum size of the upload buffer, in bytes.
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* \param alignment Alignment of each suballocation in the upload buffer.
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* \param bind Bitmask of PIPE_BIND_* flags.
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*/
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struct u_upload_mgr *u_upload_create( struct pipe_context *pipe,
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unsigned default_size,
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unsigned alignment,
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unsigned bind );
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/**
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* Destroy the upload manager.
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*/
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void u_upload_destroy( struct u_upload_mgr *upload );
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/**
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* Unmap and release old upload buffer.
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*
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* This is like u_upload_unmap() except the upload buffer is released for
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* recycling. This should be called on real hardware flushes on systems
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* that don't support the PIPE_TRANSFER_UNSYNCHRONIZED flag, as otherwise
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* the next u_upload_buffer will cause a sync on the buffer.
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*/
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void u_upload_flush( struct u_upload_mgr *upload );
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/**
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* Unmap upload buffer
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*
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* \param upload Upload manager
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*
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* This must usually be called prior to firing the command stream
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* which references the upload buffer, as many memory managers either
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* don't like firing a mapped buffer or cause subsequent maps of a
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* fired buffer to wait.
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*/
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void u_upload_unmap( struct u_upload_mgr *upload );
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/**
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* Sub-allocate new memory from the upload buffer.
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*
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* \param upload Upload manager
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* \param min_out_offset Minimum offset that should be returned in out_offset.
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* \param size Size of the allocation.
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* \param out_offset Pointer to where the new buffer offset will be returned.
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* \param outbuf Pointer to where the upload buffer will be returned.
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* \param ptr Pointer to the allocated memory that is returned.
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*/
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enum pipe_error u_upload_alloc( struct u_upload_mgr *upload,
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unsigned min_out_offset,
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unsigned size,
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unsigned *out_offset,
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struct pipe_resource **outbuf,
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void **ptr );
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/**
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* Allocate and write data to the upload buffer.
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*
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* Same as u_upload_alloc, but in addition to that, it copies "data"
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* to the pointer returned from u_upload_alloc.
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*/
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enum pipe_error u_upload_data( struct u_upload_mgr *upload,
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unsigned min_out_offset,
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unsigned size,
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const void *data,
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unsigned *out_offset,
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struct pipe_resource **outbuf);
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/**
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* Allocate space in an upload buffer and copy an input buffer to it.
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*
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* Same as u_upload_data, except that the input data comes from a buffer
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* instead of a user pointer.
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*/
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enum pipe_error u_upload_buffer( struct u_upload_mgr *upload,
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unsigned min_out_offset,
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unsigned offset,
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unsigned size,
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struct pipe_resource *inbuf,
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unsigned *out_offset,
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struct pipe_resource **outbuf);
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#endif
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