1 /****************************************************************************
2 * Copyright (C) 2015 Intel Corporation. All Rights Reserved.
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:
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
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
22 ***************************************************************************/
24 #include "util/u_memory.h"
25 #include "swr_context.h"
26 #include "swr_scratch.h"
31 swr_copy_to_scratch_space(struct swr_context
*ctx
,
32 struct swr_scratch_space
*space
,
33 const void *user_buffer
,
40 if (size
>= 2048) { /* XXX TODO create KNOB_ for this */
41 /* Use per draw SwrAllocDrawContextMemory for larger copies */
42 ptr
= SwrAllocDrawContextMemory(ctx
->swrContext
, size
, 4);
44 /* Allocate enough so that MAX_DRAWS_IN_FLIGHT sets fit. */
45 unsigned int max_size_in_flight
= size
* KNOB_MAX_DRAWS_IN_FLIGHT
;
47 /* Need to grow space */
48 if (max_size_in_flight
> space
->current_size
) {
49 /* Must idle the pipeline, this is infrequent */
50 SwrWaitForIdle(ctx
->swrContext
);
52 space
->current_size
= max_size_in_flight
;
55 align_free(space
->base
);
60 space
->base
= (uint8_t *)align_malloc(space
->current_size
, 4);
61 space
->head
= (void *)space
->base
;
66 if (((uint8_t *)space
->head
+ size
)
67 >= ((uint8_t *)space
->base
+ space
->current_size
)) {
69 * TODO XXX: Should add a fence on wrap. Assumption is that
70 * current_space >> size, and there are at least MAX_DRAWS_IN_FLIGHT
71 * draws in scratch. So fence would always be met on wrap. A fence
72 * would ensure that first frame in buffer is done before wrapping.
73 * If fence ever needs to be waited on, can increase buffer size.
74 * So far in testing, this hasn't been necessary.
76 space
->head
= space
->base
;
80 space
->head
= (uint8_t *)space
->head
+ size
;
83 /* Copy user_buffer to scratch */
85 memcpy(ptr
, user_buffer
, size
);
92 swr_init_scratch_buffers(struct swr_context
*ctx
)
94 struct swr_scratch_buffers
*scratch
;
96 scratch
= CALLOC_STRUCT(swr_scratch_buffers
);
97 ctx
->scratch
= scratch
;
101 swr_destroy_scratch_buffers(struct swr_context
*ctx
)
103 struct swr_scratch_buffers
*scratch
= ctx
->scratch
;
106 if (scratch
->vs_constants
.base
)
107 align_free(scratch
->vs_constants
.base
);
108 if (scratch
->fs_constants
.base
)
109 align_free(scratch
->fs_constants
.base
);
110 if (scratch
->vertex_buffer
.base
)
111 align_free(scratch
->vertex_buffer
.base
);
112 if (scratch
->index_buffer
.base
)
113 align_free(scratch
->index_buffer
.base
);