diff options
| author | Paul Berry <stereotype441@gmail.com> | 2013-03-21 09:11:12 -0700 |
|---|---|---|
| committer | Paul Berry <stereotype441@gmail.com> | 2013-08-23 11:03:12 -0700 |
| commit | eaa63cbbc2f5ae415fc89ef6fd74c5b26ad622fd (patch) | |
| tree | 87b2422e2775a9cff480521620c81ea0f8a9901b /src | |
| parent | a9e8c10bd76f9a94b878b76bb5ae696beeaae2e0 (diff) | |
i965/gs: Add a flag allowing URB write messages to use a per-slot offset.
This will be used by geometry shaders to implement the EmitVertex()
function, since it requires writing data to a dynamically-determined
offset within the geometry shader's URB entry.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_eu.h | 6 | ||||
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_eu_emit.c | 4 |
2 files changed, 8 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_eu.h b/src/mesa/drivers/dri/i965/brw_eu.h index ae4cab56637..9053ea2f86b 100644 --- a/src/mesa/drivers/dri/i965/brw_eu.h +++ b/src/mesa/drivers/dri/i965/brw_eu.h @@ -252,6 +252,12 @@ enum brw_urb_write_flags { BRW_URB_WRITE_COMPLETE = 0x8, /** + * Indicates that an additional offset (which may be different for the two + * vec4 slots) is stored in the message header (gen == 7). + */ + BRW_URB_WRITE_PER_SLOT_OFFSET = 0x10, + + /** * Convenient combination of flags: end the thread while simultaneously * marking the given URB entry as complete. */ diff --git a/src/mesa/drivers/dri/i965/brw_eu_emit.c b/src/mesa/drivers/dri/i965/brw_eu_emit.c index 622b22f7981..b55b57e2e82 100644 --- a/src/mesa/drivers/dri/i965/brw_eu_emit.c +++ b/src/mesa/drivers/dri/i965/brw_eu_emit.c @@ -531,8 +531,8 @@ static void brw_set_urb_message( struct brw_compile *p, insn->bits3.urb_gen7.offset = offset; assert(swizzle_control != BRW_URB_SWIZZLE_TRANSPOSE); insn->bits3.urb_gen7.swizzle_control = swizzle_control; - /* per_slot_offset = 0 makes it ignore offsets in message header */ - insn->bits3.urb_gen7.per_slot_offset = 0; + insn->bits3.urb_gen7.per_slot_offset = + flags & BRW_URB_WRITE_PER_SLOT_OFFSET ? 1 : 0; insn->bits3.urb_gen7.complete = flags & BRW_URB_WRITE_COMPLETE ? 1 : 0; } else if (brw->gen >= 5) { insn->bits3.urb_gen5.opcode = 0; /* URB_WRITE */ |