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/**************************************************************************
*
* Copyright 2009 VMware, Inc.
* 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, sub license, 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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_inlines.h"
#include "util/u_memory.h"
#include "util/u_math.h"
#include "lp_screen.h"
#include "lp_buffer.h"
static void *
llvmpipe_buffer_map(struct pipe_screen *screen,
struct pipe_buffer *buf,
unsigned flags)
{
struct llvmpipe_buffer *llvmpipe_buf = llvmpipe_buffer(buf);
return llvmpipe_buf->data;
}
static void
llvmpipe_buffer_unmap(struct pipe_screen *screen,
struct pipe_buffer *buf)
{
}
static void
llvmpipe_buffer_destroy(struct pipe_buffer *buf)
{
struct llvmpipe_buffer *sbuf = llvmpipe_buffer(buf);
if (!sbuf->userBuffer)
align_free(sbuf->data);
FREE(sbuf);
}
static struct pipe_buffer *
llvmpipe_buffer_create(struct pipe_screen *screen,
unsigned alignment,
unsigned usage,
unsigned size)
{
struct llvmpipe_buffer *buffer = CALLOC_STRUCT(llvmpipe_buffer);
pipe_reference_init(&buffer->base.reference, 1);
buffer->base.screen = screen;
buffer->base.alignment = MAX2(alignment, 16);
buffer->base.usage = usage;
buffer->base.size = size;
buffer->data = align_malloc(size, alignment);
return &buffer->base;
}
/**
* Create buffer which wraps user-space data.
*/
static struct pipe_buffer *
llvmpipe_user_buffer_create(struct pipe_screen *screen,
void *ptr,
unsigned bytes)
{
struct llvmpipe_buffer *buffer;
buffer = CALLOC_STRUCT(llvmpipe_buffer);
if(!buffer)
return NULL;
pipe_reference_init(&buffer->base.reference, 1);
buffer->base.screen = screen;
buffer->base.size = bytes;
buffer->userBuffer = TRUE;
buffer->data = ptr;
return &buffer->base;
}
void
llvmpipe_init_screen_buffer_funcs(struct pipe_screen *screen)
{
screen->buffer_create = llvmpipe_buffer_create;
screen->user_buffer_create = llvmpipe_user_buffer_create;
screen->buffer_map = llvmpipe_buffer_map;
screen->buffer_unmap = llvmpipe_buffer_unmap;
screen->buffer_destroy = llvmpipe_buffer_destroy;
}
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