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#include "util/u_memory.h"
#include "virgl_context.h"
#include "virgl_resource.h"
static void virgl_buffer_destroy(struct pipe_screen *screen,
struct pipe_resource *buf)
{
struct virgl_screen *vs = virgl_screen(screen);
struct virgl_buffer *vbuf = virgl_buffer(buf);
vs->vws->resource_unref(vs->vws, vbuf->base.hw_res);
FREE(vbuf);
}
static void *virgl_buffer_transfer_map(struct pipe_context *ctx,
struct pipe_resource *resource,
unsigned level,
unsigned usage,
const struct pipe_box *box,
struct pipe_transfer **transfer)
{
struct virgl_context *vctx = (struct virgl_context *)ctx;
struct virgl_screen *vs = virgl_screen(ctx->screen);
struct virgl_buffer *vbuf = virgl_buffer(resource);
struct virgl_transfer *trans;
void *ptr;
boolean readback = TRUE;
uint32_t offset;
if ((!(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) && vs->vws->res_is_referenced(vs->vws, vctx->cbuf, vbuf->base.hw_res))
ctx->flush(ctx, NULL, 0);
else if ((usage & PIPE_TRANSFER_READ) && (vbuf->on_list == TRUE))
ctx->flush(ctx, NULL, 0);
else if ((usage & PIPE_TRANSFER_READ) && (resource->bind == PIPE_BIND_STREAM_OUTPUT))
ctx->flush(ctx, NULL, 0);
trans = util_slab_alloc(&vctx->texture_transfer_pool);
if (trans == NULL)
return NULL;
trans->base.resource = resource;
trans->base.level = level;
trans->base.usage = usage;
trans->base.box = *box;
trans->base.stride = 0;
trans->base.layer_stride = 0;
offset = box->x;
ptr = vs->vws->resource_map(vs->vws, vbuf->base.hw_res);
if (!ptr) {
return NULL;
}
if (vbuf->base.clean)
readback = FALSE;
else if (usage & PIPE_TRANSFER_DISCARD_RANGE)
readback = FALSE;
else if ((usage & (PIPE_TRANSFER_WRITE | PIPE_TRANSFER_FLUSH_EXPLICIT)) ==
(PIPE_TRANSFER_WRITE | PIPE_TRANSFER_FLUSH_EXPLICIT))
readback = FALSE;
if (readback)
{
vs->vws->transfer_get(vs->vws, vbuf->base.hw_res, box, trans->base.stride, trans->base.layer_stride, offset, level);
/* wait for data */
vs->vws->resource_wait(vs->vws, vbuf->base.hw_res);
}
if (!(usage & PIPE_TRANSFER_UNSYNCHRONIZED))
vs->vws->resource_wait(vs->vws, vbuf->base.hw_res);
trans->offset = offset;
*transfer = &trans->base;
return ptr + trans->offset;
}
static void virgl_buffer_transfer_unmap(struct pipe_context *ctx,
struct pipe_transfer *transfer)
{
struct virgl_context *vctx = (struct virgl_context *)ctx;
struct virgl_transfer *trans = (struct virgl_transfer *)transfer;
struct virgl_buffer *vbuf = virgl_buffer(transfer->resource);
if (trans->base.usage & PIPE_TRANSFER_WRITE) {
if (!(transfer->usage & PIPE_TRANSFER_FLUSH_EXPLICIT)) {
struct virgl_screen *vs = virgl_screen(ctx->screen);
vbuf->base.clean = FALSE;
vctx->num_transfers++;
vs->vws->transfer_put(vs->vws, vbuf->base.hw_res,
&transfer->box, trans->base.stride, trans->base.layer_stride, trans->offset, transfer->level);
}
}
util_slab_free(&vctx->texture_transfer_pool, trans);
}
static void virgl_buffer_transfer_flush_region(struct pipe_context *ctx,
struct pipe_transfer *transfer,
const struct pipe_box *box)
{
struct virgl_context *vctx = (struct virgl_context *)ctx;
struct virgl_buffer *vbuf = virgl_buffer(transfer->resource);
uint32_t start, end, cstart, cend;
if (!vbuf->on_list) {
struct pipe_resource *res = NULL;
list_addtail(&vbuf->flush_list, &vctx->to_flush_bufs);
vbuf->on_list = TRUE;
pipe_resource_reference(&res, &vbuf->base.u.b);
}
start = transfer->box.x + box->x;
end = start + box->width;
cstart = vbuf->dirt_box.x;
cend = vbuf->dirt_box.x + vbuf->dirt_box.width;
if (start < cstart)
cstart = start;
if (end > cend || vbuf->dirt_box.width == 0)
cend = end;
vbuf->dirt_box.x = cstart;
vbuf->dirt_box.width = cend - cstart;
vbuf->base.clean = FALSE;
}
static const struct u_resource_vtbl virgl_buffer_vtbl =
{
u_default_resource_get_handle, /* get_handle */
virgl_buffer_destroy, /* resource_destroy */
virgl_buffer_transfer_map, /* transfer_map */
virgl_buffer_transfer_flush_region, /* transfer_flush_region */
virgl_buffer_transfer_unmap, /* transfer_unmap */
virgl_transfer_inline_write /* transfer_inline_write */
};
struct pipe_resource *virgl_buffer_create(struct virgl_screen *vs,
const struct pipe_resource *template)
{
struct virgl_buffer *buf;
uint32_t size;
buf = CALLOC_STRUCT(virgl_buffer);
buf->base.clean = TRUE;
buf->base.u.b = *template;
buf->base.u.b.screen = &vs->base;
buf->base.u.vtbl = &virgl_buffer_vtbl;
pipe_reference_init(&buf->base.u.b.reference, 1);
size = template->width0;
buf->dirt_box.x = template->width0 + 1;
buf->base.hw_res = vs->vws->resource_create(vs->vws, template->target, template->format, template->bind, template->width0, 1, 1, 1, 0, 0, size);
return &buf->base.u.b;
}
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