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/****************************************************************************
* Copyright (C) 2015 Intel Corporation. All Rights Reserved.
*
* 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 AUTHORS OR COPYRIGHT HOLDERS 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.
***************************************************************************/
#ifndef SWR_SCRATCH_H
#define SWR_SCRATCH_H
struct swr_scratch_space {
void *head;
unsigned int current_size;
/* TODO XXX: Add a fence for wrap condition. */
void *base;
};
struct swr_scratch_buffers {
struct swr_scratch_space vs_constants;
struct swr_scratch_space fs_constants;
struct swr_scratch_space gs_constants;
struct swr_scratch_space tcs_constants;
struct swr_scratch_space tes_constants;
struct swr_scratch_space vertex_buffer;
struct swr_scratch_space index_buffer;
};
/*
* swr_copy_to_scratch_space
* Copies size bytes of user_buffer into the scratch ring buffer.
* Used to store temporary data such as client arrays and constants.
*
* Inputs:
* space ptr to scratch pool (vs_constants, fs_constants)
* user_buffer, data to copy into scratch space
* size to be copied
* Returns:
* pointer to data copied to scratch space.
*/
void *swr_copy_to_scratch_space(struct swr_context *ctx,
struct swr_scratch_space *space,
const void *user_buffer,
unsigned int size);
void swr_init_scratch_buffers(struct swr_context *ctx);
void swr_destroy_scratch_buffers(struct swr_context *ctx);
#endif
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