0,0 → 1,63 |
/************************************************************************** |
* |
* Copyright 2010 Luca Barbieri |
* |
* Permission is hereby granted, free of charge, to any person obtaining |
* a copy of this software and associated documentation files (the |
* "Software"), to deal in the Software without restriction, including |
* without limitation the rights to use, copy, modify, merge, publish, |
* distribute, sublicense, and/or sell copies of the Software, and to |
* permit persons to whom the Software is furnished to do so, subject to |
* the following conditions: |
* |
* The above copyright notice and this permission notice (including the |
* next paragraph) shall be included in all copies or substantial |
* portions of the Software. |
* |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE |
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
* |
**************************************************************************/ |
|
/* Direct3D 10/11 has no concept of transfers. Applications instead |
* create resources with a STAGING or DYNAMIC usage, copy between them |
* and the real resource and use Map to map the STAGING/DYNAMIC resource. |
* |
* This util module allows to implement Gallium drivers as a Direct3D |
* driver would be implemented: transfers allocate a resource with |
* PIPE_USAGE_STAGING, and copy the data between it and the real resource |
* with resource_copy_region. |
*/ |
|
#ifndef U_STAGING_H |
#define U_STAGING_H |
|
#include "pipe/p_state.h" |
|
struct util_staging_transfer { |
struct pipe_transfer base; |
|
/* if direct, same as base.resource, otherwise the temporary staging resource */ |
struct pipe_resource *staging_resource; |
}; |
|
/* user must be stride, slice_stride and offset */ |
/* pt->usage == PIPE_USAGE_DYNAMIC || pt->usage == PIPE_USAGE_STAGING should be a good value to pass for direct */ |
/* staging resource is currently created with PIPE_USAGE_STAGING */ |
struct util_staging_transfer * |
util_staging_transfer_init(struct pipe_context *pipe, |
struct pipe_resource *pt, |
unsigned level, |
unsigned usage, |
const struct pipe_box *box, |
boolean direct, struct util_staging_transfer *tx); |
|
void |
util_staging_transfer_destroy(struct pipe_context *pipe, struct pipe_transfer *ptx); |
|
#endif |