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| author | Marek Olšák <marek.olsak@amd.com> | 2016-10-12 21:47:41 +0200 |
|---|---|---|
| committer | Marek Olšák <marek.olsak@amd.com> | 2016-10-13 19:00:51 +0200 |
| commit | e12c1cab5d571c215f65bd9f3fc1629c090ed948 (patch) | |
| tree | fdf75126ad7c7055c69678ec3850bcba1b89667c /src/gallium/drivers/radeonsi | |
| parent | d4d9ec55c589156df4edc227a86b4a8c41048d58 (diff) | |
| download | external_mesa3d-e12c1cab5d571c215f65bd9f3fc1629c090ed948.zip external_mesa3d-e12c1cab5d571c215f65bd9f3fc1629c090ed948.tar.gz external_mesa3d-e12c1cab5d571c215f65bd9f3fc1629c090ed948.tar.bz2 | |
radeonsi: disable ReZ
This is a serious performance fix. Discovered by luck.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94354
Cc: 12.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Diffstat (limited to 'src/gallium/drivers/radeonsi')
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_state_shaders.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/src/gallium/drivers/radeonsi/si_state_shaders.c b/src/gallium/drivers/radeonsi/si_state_shaders.c index c41c519..be5c659 100644 --- a/src/gallium/drivers/radeonsi/si_state_shaders.c +++ b/src/gallium/drivers/radeonsi/si_state_shaders.c @@ -808,10 +808,10 @@ static void si_shader_ps(struct si_shader *shader) S_00B02C_USER_SGPR(SI_PS_NUM_USER_SGPR) | 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. + /* DON'T USE EARLY_Z_THEN_RE_Z !!! + * + * It decreases performance by 15% in DiRT: Showdown on Ultra settings. + * And it has pretty complex shaders. * * Shaders with side effects that must execute independently of the * depth test require LATE_Z. @@ -819,9 +819,6 @@ static void si_shader_ps(struct si_shader *shader) if (info->writes_memory && !info->properties[TGSI_PROPERTY_FS_EARLY_DEPTH_STENCIL]) shader->z_order = V_02880C_LATE_Z; - else 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; } |