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/**************************************************************************
*
* Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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 TUNGSTEN GRAPHICS 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.
*
**************************************************************************/
/*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
* Michel Dänzer <michel@tungstengraphics.com>
*/
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "util/u_inlines.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#include "i915_context.h"
#include "i915_resource.h"
static boolean
i915_buffer_get_handle(struct pipe_screen *screen,
struct pipe_resource *resource,
struct winsys_handle *handle)
{
return FALSE;
}
static void
i915_buffer_destroy(struct pipe_screen *screen,
struct pipe_resource *resource)
{
struct i915_buffer *buffer = i915_buffer(resource);
if (buffer->free_on_destroy)
align_free(buffer->data);
FREE(buffer);
}
static struct pipe_transfer *
i915_get_transfer(struct pipe_context *pipe,
struct pipe_resource *resource,
unsigned level,
unsigned usage,
const struct pipe_box *box)
{
struct i915_context *i915 = i915_context(pipe);
struct pipe_transfer *transfer;
if (usage & PIPE_TRANSFER_MAP_PERMANENTLY) {
return NULL;
}
transfer = util_slab_alloc(&i915->transfer_pool);
if (transfer == NULL)
return NULL;
transfer->resource = resource;
transfer->level = level;
transfer->usage = usage;
transfer->box = *box;
/* Note strides are zero, this is ok for buffers, but not for
* textures 2d & higher at least.
*/
return transfer;
}
static void
i915_transfer_destroy(struct pipe_context *pipe,
struct pipe_transfer *transfer)
{
struct i915_context *i915 = i915_context(pipe);
util_slab_free(&i915->transfer_pool, transfer);
}
static void *
i915_buffer_transfer_map( struct pipe_context *pipe,
struct pipe_transfer *transfer )
{
struct i915_buffer *buffer = i915_buffer(transfer->resource);
return buffer->data + transfer->box.x;
}
static void
i915_buffer_transfer_inline_write( struct pipe_context *rm_ctx,
struct pipe_resource *resource,
unsigned level,
unsigned usage,
const struct pipe_box *box,
const void *data,
unsigned stride,
unsigned layer_stride)
{
struct i915_buffer *buffer = i915_buffer(resource);
memcpy(buffer->data + box->x,
data,
box->width);
}
struct u_resource_vtbl i915_buffer_vtbl =
{
i915_buffer_get_handle, /* get_handle */
i915_buffer_destroy, /* resource_destroy */
i915_get_transfer, /* get_transfer */
i915_transfer_destroy, /* transfer_destroy */
i915_buffer_transfer_map, /* transfer_map */
u_default_transfer_flush_region, /* transfer_flush_region */
u_default_transfer_unmap, /* transfer_unmap */
i915_buffer_transfer_inline_write /* transfer_inline_write */
};
struct pipe_resource *
i915_buffer_create(struct pipe_screen *screen,
const struct pipe_resource *template)
{
struct i915_buffer *buf = CALLOC_STRUCT(i915_buffer);
if (!buf)
return NULL;
buf->b.b = *template;
buf->b.vtbl = &i915_buffer_vtbl;
pipe_reference_init(&buf->b.b.reference, 1);
buf->b.b.screen = screen;
buf->data = align_malloc(template->width0, 16);
buf->free_on_destroy = TRUE;
if (!buf->data)
goto err;
return &buf->b.b;
err:
FREE(buf);
return NULL;
}
struct pipe_resource *
i915_user_buffer_create(struct pipe_screen *screen,
void *ptr,
unsigned bytes,
unsigned bind)
{
struct i915_buffer *buf = CALLOC_STRUCT(i915_buffer);
if (!buf)
return NULL;
pipe_reference_init(&buf->b.b.reference, 1);
buf->b.vtbl = &i915_buffer_vtbl;
buf->b.b.screen = screen;
buf->b.b.format = PIPE_FORMAT_R8_UNORM; /* ?? */
buf->b.b.usage = PIPE_USAGE_IMMUTABLE;
buf->b.b.bind = bind;
buf->b.b.flags = 0;
buf->b.b.width0 = bytes;
buf->b.b.height0 = 1;
buf->b.b.depth0 = 1;
buf->b.b.array_size = 1;
buf->data = ptr;
buf->free_on_destroy = FALSE;
return &buf->b.b;
}
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