-static void r300_shorten_ubyte_elts(struct r300_context* r300,
- struct pipe_resource** elts,
- unsigned start,
- unsigned count)
-{
- struct pipe_context* context = &r300->context;
- struct pipe_screen* screen = r300->context.screen;
- struct pipe_resource* new_elts;
- unsigned char *in_map;
- unsigned short *out_map;
- struct pipe_transfer *src_transfer, *dst_transfer;
- unsigned i;
-
- new_elts = pipe_buffer_create(screen,
- PIPE_BIND_INDEX_BUFFER,
- 2 * count);
-
- in_map = pipe_buffer_map(context, *elts, PIPE_TRANSFER_READ, &src_transfer);
- out_map = pipe_buffer_map(context, new_elts, PIPE_TRANSFER_WRITE, &dst_transfer);
-
- in_map += start;
-
- for (i = 0; i < count; i++) {
- *out_map = (unsigned short)*in_map;
- in_map++;
- out_map++;
- }
-
- pipe_buffer_unmap(context, *elts, src_transfer);
- pipe_buffer_unmap(context, new_elts, dst_transfer);
-
- *elts = new_elts;
-}
-
-static void r300_align_ushort_elts(struct r300_context *r300,
- struct pipe_resource **elts,
- unsigned start, unsigned count)
-{
- struct pipe_context* context = &r300->context;
- struct pipe_transfer *in_transfer = NULL;
- struct pipe_transfer *out_transfer = NULL;
- struct pipe_resource* new_elts;
- unsigned short *in_map;
- unsigned short *out_map;
-
- new_elts = pipe_buffer_create(context->screen,
- PIPE_BIND_INDEX_BUFFER,
- 2 * count);
-
- in_map = pipe_buffer_map(context, *elts,
- PIPE_TRANSFER_READ, &in_transfer);
- out_map = pipe_buffer_map(context, new_elts,
- PIPE_TRANSFER_WRITE, &out_transfer);
-
- memcpy(out_map, in_map+start, 2 * count);
-
- pipe_buffer_unmap(context, *elts, in_transfer);
- pipe_buffer_unmap(context, new_elts, out_transfer);
-
- *elts = new_elts;
-}
-