1 /**************************************************************************** 2 * Copyright (C) 2015 Intel Corporation. All Rights Reserved. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 ***************************************************************************/ 23 24 #ifndef SWR_SCRATCH_H 25 #define SWR_SCRATCH_H 26 27 struct swr_scratch_space { 28 void *head; 29 unsigned int current_size; 30 /* TODO XXX: Add a fence for wrap condition. */ 31 32 void *base; 33 }; 34 35 struct swr_scratch_buffers { 36 struct swr_scratch_space vs_constants; 37 struct swr_scratch_space fs_constants; 38 struct swr_scratch_space vertex_buffer; 39 struct swr_scratch_space index_buffer; 40 }; 41 42 43 /* 44 * swr_copy_to_scratch_space 45 * Copies size bytes of user_buffer into the scratch ring buffer. 46 * Used to store temporary data such as client arrays and constants. 47 * 48 * Inputs: 49 * space ptr to scratch pool (vs_constants, fs_constants) 50 * user_buffer, data to copy into scratch space 51 * size to be copied 52 * Returns: 53 * pointer to data copied to scratch space. 54 */ 55 void *swr_copy_to_scratch_space(struct swr_context *ctx, 56 struct swr_scratch_space *space, 57 const void *user_buffer, 58 unsigned int size); 59 60 void swr_init_scratch_buffers(struct swr_context *ctx); 61 void swr_destroy_scratch_buffers(struct swr_context *ctx); 62 63 #endif 64
