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#include "pipe/p_context.h"
#include "util/u_rect.h"
#include "util/u_inlines.h"
#include "util/u_transfer.h"
#include "util/u_memory.h"
/* One-shot transfer operation with data supplied in a user
* pointer. XXX: strides??
*/
void u_default_transfer_inline_write( struct pipe_context *pipe,
struct pipe_resource *resource,
unsigned level,
unsigned usage,
const struct pipe_box *box,
const void *data,
unsigned stride,
unsigned layer_stride)
{
struct pipe_transfer *transfer = NULL;
uint8_t *map = NULL;
assert(!(usage & PIPE_TRANSFER_READ));
/* the write flag is implicit by the nature of transfer_inline_write */
usage |= PIPE_TRANSFER_WRITE;
/* transfer_inline_write implicitly discards the rewritten buffer range */
if (box->x == 0 && box->width == resource->width0) {
usage |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE;
} else {
usage |= PIPE_TRANSFER_DISCARD_RANGE;
}
transfer = pipe->get_transfer(pipe,
resource,
level,
usage,
box );
if (transfer == NULL)
goto out;
map = pipe_transfer_map(pipe, transfer);
if (map == NULL)
goto out;
if (resource->target == PIPE_BUFFER) {
assert(box->height == 1);
assert(box->depth == 1);
memcpy(map, data, box->width);
}
else {
const uint8_t *src_data = data;
unsigned i;
for (i = 0; i < box->depth; i++) {
util_copy_rect(map,
resource->format,
transfer->stride, /* bytes */
0, 0,
box->width,
box->height,
src_data,
stride, /* bytes */
0, 0);
map += transfer->layer_stride;
src_data += layer_stride;
}
}
out:
if (map)
pipe_transfer_unmap(pipe, transfer);
if (transfer)
pipe_transfer_destroy(pipe, transfer);
}
boolean u_default_resource_get_handle(struct pipe_screen *screen,
struct pipe_resource *resource,
struct winsys_handle *handle)
{
return FALSE;
}
void u_default_transfer_flush_region( struct pipe_context *pipe,
struct pipe_transfer *transfer,
const struct pipe_box *box)
{
/* This is a no-op implementation, nothing to do.
*/
}
struct pipe_transfer * u_default_get_transfer(struct pipe_context *context,
struct pipe_resource *resource,
unsigned level,
unsigned usage,
const struct pipe_box *box)
{
struct pipe_transfer *transfer = CALLOC_STRUCT(pipe_transfer);
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;
}
void u_default_transfer_unmap( struct pipe_context *pipe,
struct pipe_transfer *transfer )
{
}
void u_default_transfer_destroy(struct pipe_context *pipe,
struct pipe_transfer *transfer)
{
FREE(transfer);
}
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