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/**************************************************************************
*
* Copyright © 2009 Jakob Bornecrantz
*
* 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 "i915_screen.h"
#include "i915_buffer.h"
struct intel_buffer;
struct i915_buffer
{
struct pipe_buffer base;
struct intel_buffer *ibuf; /** hw buffer */
void *data; /**< user and malloc data */
boolean own; /**< we own the data incase of malloc */
};
static INLINE struct i915_buffer *
i915_buffer(struct pipe_buffer *buffer)
{
return (struct i915_buffer *)buffer;
}
static struct pipe_buffer *
i915_buffer_create(struct pipe_screen *screen,
unsigned alignment,
unsigned usage,
unsigned size)
{
struct i915_buffer *buf = CALLOC_STRUCT(i915_buffer);
if (!buf)
return NULL;
pipe_reference_init(&buf->base.reference, 1);
buf->base.alignment = alignment;
buf->base.screen = screen;
buf->base.usage = usage;
buf->base.size = size;
buf->data = MALLOC(size);
buf->own = TRUE;
if (!buf->data)
goto err;
return &buf->base;
err:
FREE(buf);
return NULL;
}
static struct pipe_buffer *
i915_user_buffer_create(struct pipe_screen *screen,
void *ptr,
unsigned bytes)
{
struct i915_buffer *buf = CALLOC_STRUCT(i915_buffer);
if (!buf)
return NULL;
pipe_reference_init(&buf->base.reference, 1);
buf->base.alignment = 0;
buf->base.screen = screen;
buf->base.usage = 0;
buf->base.size = bytes;
buf->data = ptr;
buf->own = FALSE;
return &buf->base;
}
static void *
i915_buffer_map(struct pipe_screen *screen,
struct pipe_buffer *buffer,
unsigned usage)
{
struct i915_buffer *buf = i915_buffer(buffer);
assert(!buf->ibuf);
return buf->data;
}
static void
i915_buffer_unmap(struct pipe_screen *screen,
struct pipe_buffer *buffer)
{
struct i915_buffer *buf = i915_buffer(buffer);
assert(!buf->ibuf);
(void) buf;
}
static void
i915_buffer_destroy(struct pipe_buffer *buffer)
{
struct i915_buffer *buf = i915_buffer(buffer);
assert(!buf->ibuf);
if (buf->own)
FREE(buf->data);
FREE(buf);
}
void i915_init_screen_buffer_functions(struct i915_screen *screen)
{
screen->base.buffer_create = i915_buffer_create;
screen->base.user_buffer_create = i915_user_buffer_create;
screen->base.buffer_map = i915_buffer_map;
screen->base.buffer_map_range = NULL;
screen->base.buffer_flush_mapped_range = NULL;
screen->base.buffer_unmap = i915_buffer_unmap;
screen->base.buffer_destroy = i915_buffer_destroy;
}
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