void* r300_texture_transfer_map(struct pipe_context *ctx,
struct pipe_transfer *transfer)
{
struct r300_context *r300 = r300_context(ctx);
struct radeon_winsys *rws = (struct radeon_winsys *)ctx->winsys;
struct r300_transfer *r300transfer = r300_transfer(transfer);
struct r300_resource *tex = r300_resource(transfer->resource);
char *map;
enum pipe_format format = tex->b.b.b.format;
if (r300transfer->linear_texture) {
/* The detiled texture is of the same size as the region being mapped
* (no offset needed). */
return rws->buffer_map(r300transfer->linear_texture->buf,
r300->cs,
transfer->usage);
} else {
/* Tiling is disabled. */
map = rws->buffer_map(tex->buf, r300->cs,
transfer->usage);
if (!map) {
return NULL;
}
return map + r300_transfer(transfer)->offset +
transfer->box.y / util_format_get_blockheight(format) * transfer->stride +
transfer->box.x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
}
}
void r300_texture_transfer_unmap(struct pipe_context *ctx,
struct pipe_transfer *transfer)
{
struct radeon_winsys *rws = (struct radeon_winsys *)ctx->winsys;
struct r300_transfer *r300transfer = r300_transfer(transfer);
struct r300_resource *tex = r300_resource(transfer->resource);
if (r300transfer->linear_texture) {
rws->buffer_unmap(r300transfer->linear_texture->buf);
} else {
rws->buffer_unmap(tex->buf);
}
}
void r300_texture_transfer_destroy(struct pipe_context *ctx,
struct pipe_transfer *trans)
{
struct r300_transfer *r300transfer = r300_transfer(trans);
if (r300transfer->linear_texture) {
if (trans->usage & PIPE_TRANSFER_WRITE) {
r300_copy_into_tiled_texture(ctx, r300transfer);
}
pipe_resource_reference(
(struct pipe_resource**)&r300transfer->linear_texture, NULL);
}
pipe_resource_reference(&trans->resource, NULL);
FREE(trans);
}
void r300_texture_transfer_unmap(struct pipe_context *ctx,
struct pipe_transfer *transfer)
{
struct radeon_winsys *rws = r300_context(ctx)->rws;
struct r300_transfer *trans = r300_transfer(transfer);
struct r300_resource *tex = r300_resource(transfer->resource);
if (trans->linear_texture) {
if (transfer->usage & PIPE_TRANSFER_WRITE) {
r300_copy_into_tiled_texture(ctx, trans);
}
pipe_resource_reference(
(struct pipe_resource**)&trans->linear_texture, NULL);
}
FREE(transfer);
}
static void* r300_transfer_map(struct pipe_screen* screen,
struct pipe_transfer* transfer)
{
struct r300_texture* tex = (struct r300_texture*)transfer->texture;
char* map;
enum pipe_format format = tex->tex.format;
map = pipe_buffer_map(screen, tex->buffer,
pipe_transfer_buffer_flags(transfer));
if (!map) {
return NULL;
}
return map + r300_transfer(transfer)->offset +
transfer->y / util_format_get_blockheight(format) * transfer->stride +
transfer->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
}
