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| author | Marek Olšák <marek.olsak@amd.com> | 2016-02-22 00:40:04 +0100 |
|---|---|---|
| committer | Marek Olšák <marek.olsak@amd.com> | 2016-03-01 00:18:19 +0100 |
| commit | d0f3b524cdb8489a6872ba3639a13813de221fc2 (patch) | |
| tree | c918a3180af2a75e4f0a8c58b156a7cb9d21a084 /src/gallium/drivers/radeonsi/si_state_shaders.c | |
| parent | 09bfbd43a0818c67cb0a6dd4437cc4946e0af5dc (diff) | |
| download | external_mesa3d-d0f3b524cdb8489a6872ba3639a13813de221fc2.zip external_mesa3d-d0f3b524cdb8489a6872ba3639a13813de221fc2.tar.gz external_mesa3d-d0f3b524cdb8489a6872ba3639a13813de221fc2.tar.bz2 | |
radeonsi: use re-Z
This can increase perf for shaders that kill pixels (kill, alpha-test,
alpha-to-coverage).
v2: add comments
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Diffstat (limited to 'src/gallium/drivers/radeonsi/si_state_shaders.c')
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_state_shaders.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/src/gallium/drivers/radeonsi/si_state_shaders.c b/src/gallium/drivers/radeonsi/si_state_shaders.c index a6753a7..321b87d 100644 --- a/src/gallium/drivers/radeonsi/si_state_shaders.c +++ b/src/gallium/drivers/radeonsi/si_state_shaders.c @@ -789,6 +789,17 @@ static void si_shader_ps(struct si_shader *shader) S_00B02C_EXTRA_LDS_SIZE(shader->config.lds_size) | S_00B02C_USER_SGPR(num_user_sgprs) | S_00B32C_SCRATCH_EN(shader->config.scratch_bytes_per_wave > 0)); + + /* Prefer RE_Z if the shader is complex enough. The requirement is either: + * - the shader uses at least 2 VMEM instructions, or + * - the code size is at least 50 2-dword instructions or 100 1-dword + * instructions. + */ + if (info->num_memory_instructions >= 2 || + shader->binary.code_size > 100*4) + shader->z_order = V_02880C_EARLY_Z_THEN_RE_Z; + else + shader->z_order = V_02880C_EARLY_Z_THEN_LATE_Z; } static void si_shader_init_pm4_state(struct si_shader *shader) @@ -1985,15 +1996,18 @@ bool si_update_shaders(struct si_context *sctx) si_update_vgt_shader_config(sctx); if (sctx->ps_shader.cso) { - unsigned db_shader_control = - sctx->ps_shader.cso->db_shader_control | - S_02880C_KILL_ENABLE(si_get_alpha_test_func(sctx) != PIPE_FUNC_ALWAYS); + unsigned db_shader_control; r = si_shader_select(ctx, &sctx->ps_shader); if (r) return false; si_pm4_bind_state(sctx, ps, sctx->ps_shader.current->pm4); + db_shader_control = + sctx->ps_shader.cso->db_shader_control | + S_02880C_KILL_ENABLE(si_get_alpha_test_func(sctx) != PIPE_FUNC_ALWAYS) | + S_02880C_Z_ORDER(sctx->ps_shader.current->z_order); + if (si_pm4_state_changed(sctx, ps) || si_pm4_state_changed(sctx, vs) || sctx->sprite_coord_enable != rs->sprite_coord_enable || sctx->flatshade != rs->flatshade) { |