diff options
| author | Keith Whitwell <[email protected]> | 2010-11-02 16:29:10 +0000 |
|---|---|---|
| committer | Keith Whitwell <[email protected]> | 2010-11-02 16:57:24 +0000 |
| commit | 8dfafbf0861fe3d2542332658dd5493851053c78 (patch) | |
| tree | e6adb0bb2cd6f965b25a64c8d5d22234121b031b | |
| parent | debcb434891756573ed2dc102ad1b673a8dce7da (diff) | |
st/mesa: unbind constant buffer when not in use
Important as more constant buffers per shader start to get used.
Fix up r600 (tested) and nv50 (untested) to cope with this. Drivers
previously didn't see unbinds of constant buffers often or ever, so
this isn't always dealt with cleanly.
For r600 just return and keep the reference. Will try to do better in
a followup change.
| -rw-r--r-- | src/gallium/drivers/nv50/nv50_shader_state.c | 3 | ||||
| -rw-r--r-- | src/gallium/drivers/r600/r600_state.c | 7 | ||||
| -rw-r--r-- | src/mesa/state_tracker/st_atom_constbuf.c | 5 |
3 files changed, 14 insertions, 1 deletions
diff --git a/src/gallium/drivers/nv50/nv50_shader_state.c b/src/gallium/drivers/nv50/nv50_shader_state.c index 6c41e8f4561..306aa81d985 100644 --- a/src/gallium/drivers/nv50/nv50_shader_state.c +++ b/src/gallium/drivers/nv50/nv50_shader_state.c @@ -39,6 +39,9 @@ nv50_transfer_constbuf(struct nv50_context *nv50, uint32_t *map; unsigned count, start; + if (buf == NULL) + return; + map = pipe_buffer_map(pipe, buf, PIPE_TRANSFER_READ, &transfer); if (!map) return; diff --git a/src/gallium/drivers/r600/r600_state.c b/src/gallium/drivers/r600/r600_state.c index b3e0d493217..ccd74210b78 100644 --- a/src/gallium/drivers/r600/r600_state.c +++ b/src/gallium/drivers/r600/r600_state.c @@ -1018,6 +1018,13 @@ static void r600_set_constant_buffer(struct pipe_context *ctx, uint shader, uint struct r600_pipe_context *rctx = (struct r600_pipe_context *)ctx; struct r600_resource *rbuffer = (struct r600_resource*)buffer; + /* Note that the state tracker can unbind constant buffers by + * passing NULL here. + */ + if (buffer == NULL) { + return; + } + switch (shader) { case PIPE_SHADER_VERTEX: rctx->vs_const_buffer.nregs = 0; diff --git a/src/mesa/state_tracker/st_atom_constbuf.c b/src/mesa/state_tracker/st_atom_constbuf.c index 6f9d71e845b..8d1dc792bc8 100644 --- a/src/mesa/state_tracker/st_atom_constbuf.c +++ b/src/mesa/state_tracker/st_atom_constbuf.c @@ -90,8 +90,11 @@ void st_upload_constants( struct st_context *st, st->pipe->set_constant_buffer(st->pipe, shader_type, 0, *cbuf); } - else { + else if (*cbuf) { st->constants.tracked_state[shader_type].dirty.mesa = 0x0; + + pipe_resource_reference(cbuf, NULL); + st->pipe->set_constant_buffer(st->pipe, shader_type, 0, NULL); } } |