Mesa (master): radeonsi: set optimal settings in COMPUTE_RESOURCE_LIMITS
Marek Olšák
mareko at kemper.freedesktop.org
Tue Jul 19 21:45:35 UTC 2016
Module: Mesa
Branch: master
Commit: b2b45cecef33b0212037e53bf229e14293d0f4a0
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=b2b45cecef33b0212037e53bf229e14293d0f4a0
Author: Marek Olšák <marek.olsak at amd.com>
Date: Wed Jul 13 22:34:54 2016 +0200
radeonsi: set optimal settings in COMPUTE_RESOURCE_LIMITS
ported from Vulkan
Reviewed-by: Nicolai Hähnle <nicolai.haehnle at amd.com>
---
src/gallium/drivers/radeonsi/si_compute.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/src/gallium/drivers/radeonsi/si_compute.c b/src/gallium/drivers/radeonsi/si_compute.c
index 5a40286..e75f6bd 100644
--- a/src/gallium/drivers/radeonsi/si_compute.c
+++ b/src/gallium/drivers/radeonsi/si_compute.c
@@ -163,8 +163,7 @@ static void si_initialize_compute(struct si_context *sctx)
radeon_emit(cs, 0);
radeon_emit(cs, 0);
- radeon_set_sh_reg_seq(cs, R_00B854_COMPUTE_RESOURCE_LIMITS, 3);
- radeon_emit(cs, 0);
+ radeon_set_sh_reg_seq(cs, R_00B858_COMPUTE_STATIC_THREAD_MGMT_SE0, 2);
/* R_00B858_COMPUTE_STATIC_THREAD_MGMT_SE0 / SE1 */
radeon_emit(cs, S_00B858_SH0_CU_EN(0xffff) | S_00B858_SH1_CU_EN(0xffff));
radeon_emit(cs, S_00B85C_SH0_CU_EN(0xffff) | S_00B85C_SH1_CU_EN(0xffff));
@@ -400,6 +399,11 @@ static void si_emit_dispatch_packets(struct si_context *sctx,
{
struct radeon_winsys_cs *cs = sctx->b.gfx.cs;
bool render_cond_bit = sctx->b.render_cond && !sctx->b.render_cond_force_off;
+ unsigned waves_per_threadgroup =
+ DIV_ROUND_UP(info->block[0] * info->block[1] * info->block[2], 64);
+
+ radeon_set_sh_reg(cs, R_00B854_COMPUTE_RESOURCE_LIMITS,
+ S_00B854_SIMD_DEST_CNTL(waves_per_threadgroup % 4 == 0));
radeon_set_sh_reg_seq(cs, R_00B81C_COMPUTE_NUM_THREAD_X, 3);
radeon_emit(cs, S_00B81C_NUM_THREAD_FULL(info->block[0]));
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