diff options
Diffstat (limited to 'src/mesa/state_tracker/st_atom_constbuf.c')
-rw-r--r-- | src/mesa/state_tracker/st_atom_constbuf.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/src/mesa/state_tracker/st_atom_constbuf.c b/src/mesa/state_tracker/st_atom_constbuf.c index 57f5ec68d2..c9d63136b5 100644 --- a/src/mesa/state_tracker/st_atom_constbuf.c +++ b/src/mesa/state_tracker/st_atom_constbuf.c @@ -69,8 +69,13 @@ void st_upload_constants( struct st_context *st, _mesa_load_state_parameters(st->ctx, params); - if (!cbuf->buffer) - cbuf->buffer = ws->buffer_create(ws, 1, 0, 0); + if (cbuf->buffer && cbuf->size != paramBytes) + ws->buffer_reference( ws, &cbuf->buffer, NULL ); + + if (!cbuf->buffer) { + cbuf->buffer = ws->buffer_create(ws, 1, PIPE_BUFFER_USAGE_CONSTANT, + paramBytes); + } if (0) { @@ -80,8 +85,11 @@ void st_upload_constants( struct st_context *st, } /* load Mesa constants into the constant buffer */ - ws->buffer_data(ws, cbuf->buffer, paramBytes, params->ParameterValues, - PIPE_BUFFER_USAGE_CONSTANT); + if (cbuf->buffer) { + memcpy(ws->buffer_map(ws, cbuf->buffer, PIPE_BUFFER_USAGE_CPU_WRITE), + params->ParameterValues, paramBytes); + ws->buffer_unmap(ws, cbuf->buffer); + } cbuf->size = paramBytes; |