diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/drivers/dri/i965/intel_batchbuffer.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/intel_batchbuffer.c b/src/mesa/drivers/dri/i965/intel_batchbuffer.c index 46242681229..a06f298bafd 100644 --- a/src/mesa/drivers/dri/i965/intel_batchbuffer.c +++ b/src/mesa/drivers/dri/i965/intel_batchbuffer.c @@ -432,6 +432,38 @@ intel_batchbuffer_data(struct brw_context *brw, } /** + * According to the latest documentation, any PIPE_CONTROL with the + * "Command Streamer Stall" bit set must also have another bit set, + * with five different options: + * + * - Render Target Cache Flush + * - Depth Cache Flush + * - Stall at Pixel Scoreboard + * - Post-Sync Operation + * - Depth Stall + * + * I chose "Stall at Pixel Scoreboard" since we've used it effectively + * in the past, but the choice is fairly arbitrary. + */ +static void +gen8_add_cs_stall_workaround_bits(uint32_t *flags) +{ + uint32_t wa_bits = PIPE_CONTROL_WRITE_FLUSH | + PIPE_CONTROL_DEPTH_CACHE_FLUSH | + PIPE_CONTROL_WRITE_IMMEDIATE | + PIPE_CONTROL_WRITE_DEPTH_COUNT | + PIPE_CONTROL_WRITE_TIMESTAMP | + PIPE_CONTROL_STALL_AT_SCOREBOARD | + PIPE_CONTROL_DEPTH_STALL; + + /* If we're doing a CS stall, and don't already have one of the + * workaround bits set, add "Stall at Pixel Scoreboard." + */ + if ((*flags & PIPE_CONTROL_CS_STALL) != 0 && (*flags & wa_bits) == 0) + *flags |= PIPE_CONTROL_STALL_AT_SCOREBOARD; +} + +/** * Emit a PIPE_CONTROL with various flushing flags. * * The caller is responsible for deciding what flags are appropriate for the @@ -441,6 +473,8 @@ void brw_emit_pipe_control_flush(struct brw_context *brw, uint32_t flags) { if (brw->gen >= 8) { + gen8_add_cs_stall_workaround_bits(&flags); + BEGIN_BATCH(6); OUT_BATCH(_3DSTATE_PIPE_CONTROL | (6 - 2)); OUT_BATCH(flags); @@ -481,6 +515,8 @@ brw_emit_pipe_control_write(struct brw_context *brw, uint32_t flags, uint32_t imm_lower, uint32_t imm_upper) { if (brw->gen >= 8) { + gen8_add_cs_stall_workaround_bits(&flags); + BEGIN_BATCH(6); OUT_BATCH(_3DSTATE_PIPE_CONTROL | (6 - 2)); OUT_BATCH(flags); |