From 188b579e30cb7f8d7eef5cc9eb5913d9d43a3038 Mon Sep 17 00:00:00 2001 From: Luca Barbieri Date: Tue, 23 Feb 2010 11:11:52 +0100 Subject: nouveau: add state buffers, lightweight replacement for state objects Just a dumb buffer, allowed by the RING_3D/fixed subchannel binding and no support for relocations. This is *much* faster than state objects. --- src/gallium/drivers/nouveau/nouveau_statebuf.h | 27 ++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 src/gallium/drivers/nouveau/nouveau_statebuf.h (limited to 'src/gallium/drivers/nouveau') diff --git a/src/gallium/drivers/nouveau/nouveau_statebuf.h b/src/gallium/drivers/nouveau/nouveau_statebuf.h new file mode 100644 index 0000000000..dcffdd9115 --- /dev/null +++ b/src/gallium/drivers/nouveau/nouveau_statebuf.h @@ -0,0 +1,27 @@ +#ifndef __NOUVEAU_STATEBUF_H__ +#define __NOUVEAU_STATEBUF_H__ + +/* state buffers: lightweight state objects interface */ +/* relocations are not supported, but Gallium CSOs don't require them */ + +struct nouveau_statebuf_builder +{ + uint32_t* p; +#ifdef DEBUG + uint32_t* pend; +#endif +}; + +#ifdef DEBUG +#define sb_init(var) {var, var + sizeof(var) / sizeof((var)[0])} +#define sb_data(sb, v) do {assert((sb).p != (sb).pend); *(sb).p++ = (v);} while(0) +#else +#define sb_init(var) {var} +#define sb_data(sb, v) *(sb).p++ = (v) +#endif + +#define sb_method(sb, v, n) sb_data(sb, RING_3D(v, n)); + +#define sb_len(sb, var) ((sb).p - (var)) +#define sb_emit(chan, sb_buf, sb_len) do {WAIT_RING((chan), (sb_len)); OUT_RINGp((chan), (sb_buf), (sb_len)); } while(0) +#endif -- cgit v1.2.3