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#include "util/u_memory.h"
25#include "swr_context.h"
26#include "swr_screen.h"
27#include "swr_scratch.h"
28#include "swr_fence.h"
29#include "swr_fence_work.h"
30#include "api.h"
31
32void *
33swr_copy_to_scratch_space(struct swr_context *ctx,
34                          struct swr_scratch_space *space,
35                          const void *user_buffer,
36                          unsigned int size)
37{
38   void *ptr;
39   assert(space);
40   assert(size);
41
42   /* Allocate enough so that MAX_DRAWS_IN_FLIGHT sets fit. */
43   uint32_t max_size_in_flight = size * ctx->max_draws_in_flight;
44
45   /* Need to grow space */
46   if (max_size_in_flight > space->current_size) {
47      space->current_size = max_size_in_flight;
48
49      if (space->base) {
50         /* defer delete, use aligned-free, fence finish enforces the defer
51          * delete will be on the *next* fence */
52         struct swr_screen *screen = swr_screen(ctx->pipe.screen);
53         swr_fence_finish(ctx->pipe.screen, NULL, screen->flush_fence, 0);
54         swr_fence_work_free(screen->flush_fence, space->base, true);
55         space->base = NULL;
56      }
57
58      if (!space->base) {
59         space->base = (uint8_t *)AlignedMalloc(space->current_size,
60                                                sizeof(void *));
61         space->head = (void *)space->base;
62      }
63   }
64
65   /* Wrap */
66   if (((uint8_t *)space->head + size)
67       >= ((uint8_t *)space->base + space->current_size)) {
68      space->head = space->base;
69   }
70
71   ptr = space->head;
72   space->head = (uint8_t *)space->head + size;
73
74   /* Copy user_buffer to scratch */
75   if (user_buffer)
76      memcpy(ptr, user_buffer, size);
77
78   return ptr;
79}
80
81
82void
83swr_init_scratch_buffers(struct swr_context *ctx)
84{
85   struct swr_scratch_buffers *scratch;
86
87   scratch = CALLOC_STRUCT(swr_scratch_buffers);
88   ctx->scratch = scratch;
89}
90
91void
92swr_destroy_scratch_buffers(struct swr_context *ctx)
93{
94   struct swr_scratch_buffers *scratch = ctx->scratch;
95
96   if (scratch) {
97      AlignedFree(scratch->vs_constants.base);
98      AlignedFree(scratch->fs_constants.base);
99      AlignedFree(scratch->gs_constants.base);
100      AlignedFree(scratch->tcs_constants.base);
101      AlignedFree(scratch->tes_constants.base);
102      AlignedFree(scratch->vertex_buffer.base);
103      AlignedFree(scratch->index_buffer.base);
104      FREE(scratch);
105   }
106}
107