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
32 void *
swr_copy_to_scratch_space(struct swr_context * ctx,struct swr_scratch_space * space,const void * user_buffer,unsigned int size)33 swr_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
82 void
swr_init_scratch_buffers(struct swr_context * ctx)83 swr_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
91 void
swr_destroy_scratch_buffers(struct swr_context * ctx)92 swr_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