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/****************************************************************************
* Copyright (C) 2015 Intel Corporation. All Rights Reserved.
*
* 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.
***************************************************************************/
#include "util/u_memory.h"
#include "swr_context.h"
#include "swr_screen.h"
#include "swr_scratch.h"
#include "swr_fence_work.h"
#include "api.h"
#define SCRATCH_SINGLE_ALLOCATION_LIMIT 2048
void *
swr_copy_to_scratch_space(struct swr_context *ctx,
struct swr_scratch_space *space,
const void *user_buffer,
unsigned int size)
{
void *ptr;
assert(space);
assert(size);
if (size >= SCRATCH_SINGLE_ALLOCATION_LIMIT) {
/* Use per draw SwrAllocDrawContextMemory for larger copies */
ptr = ctx->api.pfnSwrAllocDrawContextMemory(ctx->swrContext, size, 4);
} else {
/* Allocate enough so that MAX_DRAWS_IN_FLIGHT sets fit. */
unsigned int max_size_in_flight = size * KNOB_MAX_DRAWS_IN_FLIGHT;
/* Need to grow space */
if (max_size_in_flight > space->current_size) {
space->current_size = max_size_in_flight;
if (space->base) {
/* defer delete, use aligned-free */
struct swr_screen *screen = swr_screen(ctx->pipe.screen);
swr_fence_work_free(screen->flush_fence, space->base, true);
space->base = NULL;
}
if (!space->base) {
space->base = (uint8_t *)AlignedMalloc(space->current_size,
sizeof(void *));
space->head = (void *)space->base;
}
}
/* Wrap */
if (((uint8_t *)space->head + size)
>= ((uint8_t *)space->base + space->current_size)) {
space->head = space->base;
}
ptr = space->head;
space->head = (uint8_t *)space->head + size;
}
/* Copy user_buffer to scratch */
if (user_buffer)
memcpy(ptr, user_buffer, size);
return ptr;
}
void
swr_init_scratch_buffers(struct swr_context *ctx)
{
struct swr_scratch_buffers *scratch;
scratch = CALLOC_STRUCT(swr_scratch_buffers);
ctx->scratch = scratch;
}
void
swr_destroy_scratch_buffers(struct swr_context *ctx)
{
struct swr_scratch_buffers *scratch = ctx->scratch;
if (scratch) {
AlignedFree(scratch->vs_constants.base);
AlignedFree(scratch->fs_constants.base);
AlignedFree(scratch->gs_constants.base);
AlignedFree(scratch->vertex_buffer.base);
AlignedFree(scratch->index_buffer.base);
FREE(scratch);
}
}
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