| /**************************************************************************** |
| * 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 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 |