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/*
* Copyright © 2011 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Authors:
* Chris Wilson <chris@chris-wilson.co.uk>
*
*/
#include "sna.h"
#include "sna_render.h"
#if DEBUG_STREAM
#undef DBG
#define DBG(x) ErrorF x
#endif
int sna_static_stream_init(struct sna_static_stream *stream)
{
stream->used = 0;
stream->size = 64*1024;
stream->data = malloc(stream->size);
return stream->data != NULL;
}
static uint32_t sna_static_stream_alloc(struct sna_static_stream *stream,
uint32_t len, uint32_t align)
{
uint32_t offset = ALIGN(stream->used, align);
uint32_t size = offset + len;
if (size > stream->size) {
do
stream->size *= 2;
while (stream->size < size);
stream->data = realloc(stream->data, stream->size);
}
stream->used = size;
return offset;
}
uint32_t sna_static_stream_add(struct sna_static_stream *stream,
const void *data, uint32_t len, uint32_t align)
{
uint32_t offset = sna_static_stream_alloc(stream, len, align);
memcpy(stream->data + offset, data, len);
return offset;
}
void *sna_static_stream_map(struct sna_static_stream *stream,
uint32_t len, uint32_t align)
{
uint32_t offset = sna_static_stream_alloc(stream, len, align);
return memset(stream->data + offset, 0, len);
}
uint32_t sna_static_stream_offsetof(struct sna_static_stream *stream, void *ptr)
{
return (uint8_t *)ptr - stream->data;
}
struct kgem_bo *sna_static_stream_fini(struct sna *sna,
struct sna_static_stream *stream)
{
struct kgem_bo *bo;
DBG(("uploaded %d bytes of static state\n", stream->used));
bo = kgem_create_linear(&sna->kgem, stream->used);
if (bo && !kgem_bo_write(&sna->kgem, bo, stream->data, stream->used)) {
kgem_bo_destroy(&sna->kgem, bo);
return NULL;
}
free(stream->data);
return bo;
}
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