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radv: force enable VK_AMD_shader_ballot for Wolfenstein Youngblood 

This gives a nice boost, +20% at this time on my Vega 56. Shader
ballot should be enabled by default at some point but it reduces
performance a bit (-6%) with Wolfeinstein II. Enable it only for
Youngblood at the moment, like what we did for Talos in the past.

As a bonus point, it gets rid of some minor artifacts that only
happens when ballot is disabled for some reasons.

Cc: 19.2 <mesa-stable@lists.freedesktop.org
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Samuel Pitoiset 2019-08-20 16:50:57 +02:00
parent f202ac27a9
commit a6ad9e8ccf
1 changed files with 8 additions and 0 deletions
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8
src/amd/vulkan/radv_device.c
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@ -555,6 +555,14 @@ radv_handle_per_app_options(struct radv_instance *instance,
*/
if (HAVE_LLVM < 0x900)
instance->debug_flags |= RADV_DEBUG_NO_LOAD_STORE_OPT;
} else if (!strcmp(name, "Wolfenstein: Youngblood")) {
if (!(instance->debug_flags & RADV_DEBUG_NO_SHADER_BALLOT)) {
/* Force enable VK_AMD_shader_ballot because it looks
* safe and it gives a nice boost (+20% on Vega 56 at
* this time).
*/
instance->perftest_flags |= RADV_PERFTEST_SHADER_BALLOT;
}
}
}