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