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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"
void u_default_buffer_subdata(struct pipe_context *pipe,
struct pipe_resource *resource,
unsigned usage, unsigned offset,
unsigned size, const void *data)
{
struct pipe_transfer *transfer = NULL;
struct pipe_box box;
uint8_t *map = NULL;
assert(!(usage & PIPE_MAP_READ));
/* the write flag is implicit by the nature of buffer_subdata */
usage |= PIPE_MAP_WRITE;
/* buffer_subdata implicitly discards the rewritten buffer range.
* PIPE_MAP_DIRECTLY supresses that.
*/
if (!(usage & PIPE_MAP_DIRECTLY)) {
if (offset == 0 && size == resource->width0) {
usage |= PIPE_MAP_DISCARD_WHOLE_RESOURCE;
} else {
usage |= PIPE_MAP_DISCARD_RANGE;
}
}
u_box_1d(offset, size, &box);
map = pipe->buffer_map(pipe, resource, 0, usage, &box, &transfer);
if (!map)
return;
memcpy(map, data, size);
pipe_buffer_unmap(pipe, transfer);
}
void u_default_clear_buffer(struct pipe_context *pipe,
struct pipe_resource *resource,
unsigned offset, unsigned size,
const void *clear_value,
int clear_value_size)
{
struct pipe_transfer *transfer = NULL;
struct pipe_box box;
uint8_t *map = NULL;
/* the write flag is implicit by the nature of buffer_subdata */
unsigned usage = PIPE_MAP_WRITE;
/* clear_buffer implicitly discards the rewritten buffer range. */
if (offset == 0 && size == resource->width0) {
usage |= PIPE_MAP_DISCARD_WHOLE_RESOURCE;
} else {
usage |= PIPE_MAP_DISCARD_RANGE;
}
u_box_1d(offset, size, &box);
map = pipe->buffer_map(pipe, resource, 0, usage, &box, &transfer);
if (!map)
return;
assert(clear_value_size > 0);
for (unsigned off = 0; off < size; off += clear_value_size)
memcpy(map + off, clear_value, MIN2(clear_value_size, size - off));
pipe_buffer_unmap(pipe, transfer);
}
void u_default_texture_subdata(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;
const uint8_t *src_data = data;
uint8_t *map = NULL;
assert(!(usage & PIPE_MAP_READ));
/* the write flag is implicit by the nature of texture_subdata */
usage |= PIPE_MAP_WRITE;
/* texture_subdata implicitly discards the rewritten buffer range */
usage |= PIPE_MAP_DISCARD_RANGE;
map = pipe->texture_map(pipe,
resource,
level,
usage,
box, &transfer);
if (!map)
return;
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_texture_unmap(pipe, transfer);
}
void u_default_transfer_flush_region(UNUSED struct pipe_context *pipe,
UNUSED struct pipe_transfer *transfer,
UNUSED const struct pipe_box *box)
{
/* This is a no-op implementation, nothing to do.
*/
}
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