132 lines
4.4 KiB
C
132 lines
4.4 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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#include "pipe/p_defines.h"
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struct pipe_context;
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struct pipe_resource;
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#ifdef __cplusplus
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extern "C" {
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#endif
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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 bind Bitmask of PIPE_BIND_* flags.
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* \param usage PIPE_USAGE_*
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* \param flags bitmask of PIPE_RESOURCE_FLAG_* flags.
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*/
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struct u_upload_mgr *
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u_upload_create(struct pipe_context *pipe, unsigned default_size,
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unsigned bind, enum pipe_resource_usage usage, unsigned flags);
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/**
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* Create the default uploader for pipe_context. Only pipe_context::screen
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* needs to be set for this to succeed.
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*/
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struct u_upload_mgr *
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u_upload_create_default(struct pipe_context *pipe);
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/**
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* Create an uploader with identical parameters as another one, but using
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* the given pipe_context instead.
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*/
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struct u_upload_mgr *
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u_upload_clone(struct pipe_context *pipe, struct u_upload_mgr *upload);
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/** Whether to avoid persistent mappings where available */
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void
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u_upload_disable_persistent(struct u_upload_mgr *upload);
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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 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 alignment Alignment of the suballocation within the buffer
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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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void 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 alignment,
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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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void 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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unsigned alignment,
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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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#ifdef __cplusplus
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} // extern "C" {
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#endif
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#endif
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