-static struct pipe_transfer*
-r300_get_tex_transfer(struct pipe_screen *screen,
- struct pipe_texture *texture,
- unsigned face, unsigned level, unsigned zslice,
- enum pipe_transfer_usage usage, unsigned x, unsigned y,
- unsigned w, unsigned h)
-{
- struct r300_texture *tex = (struct r300_texture *)texture;
- struct r300_transfer *trans;
- struct r300_screen *rscreen = r300_screen(screen);
- unsigned offset;
-
- offset = r300_texture_get_offset(tex, level, zslice, face); /* in bytes */
-
- trans = CALLOC_STRUCT(r300_transfer);
- if (trans) {
- pipe_texture_reference(&trans->transfer.texture, texture);
- trans->transfer.x = x;
- trans->transfer.y = y;
- trans->transfer.width = w;
- trans->transfer.height = h;
- trans->transfer.stride = r300_texture_get_stride(rscreen, tex, level);
- trans->transfer.usage = usage;
- trans->transfer.zslice = zslice;
- trans->transfer.face = face;
-
- trans->offset = offset;
- }
- return &trans->transfer;
-}
-
-static void
-r300_tex_transfer_destroy(struct pipe_transfer *trans)
-{
- pipe_texture_reference(&trans->texture, NULL);
- FREE(trans);
-}
-
-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);
-}
-
-static void r300_transfer_unmap(struct pipe_screen* screen,
- struct pipe_transfer* transfer)
-{
- struct r300_texture* tex = (struct r300_texture*)transfer->texture;
- pipe_buffer_unmap(screen, tex->buffer);
-}
-