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#include "pipe/p_context.h"
#include "util/u_surface.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;
}
map = pipe->transfer_map(pipe,
resource,
level,
usage,
box, &transfer);
if (map == NULL)
return;
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;
util_copy_box(map,
resource->format,
transfer->stride, /* bytes */
transfer->layer_stride, /* bytes */
0, 0, 0,
box->width,
box->height,
box->depth,
src_data,
stride, /* bytes */
layer_stride, /* bytes */
0, 0, 0);
}
pipe_transfer_unmap(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.
*/
}
void u_default_transfer_unmap( struct pipe_context *pipe,
struct pipe_transfer *transfer )
{
}
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