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Vulkan: Enable subgroupShuffle.

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It is used as workaround for the missing subgroupBroadcastDynamicId flag on SPIR-V < 1.5.
This commit is contained in:
degasus
2023-03-24 21:42:43 +01:00
parent 1571098783
commit 196c684ac1
3 changed files with 14 additions and 3 deletions
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8
Source/Core/VideoBackends/Vulkan/VulkanContext.cpp
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@ -981,9 +981,11 @@ void VulkanContext::PopulateShaderSubgroupSupport()
// We require basic ops (for gl_SubgroupInvocationID), ballot (for subgroupBallot,
// subgroupBallotFindLSB), and arithmetic (for subgroupMin/subgroupMax).
constexpr VkSubgroupFeatureFlags required_operations = VK_SUBGROUP_FEATURE_BASIC_BIT |
VK_SUBGROUP_FEATURE_ARITHMETIC_BIT |
VK_SUBGROUP_FEATURE_BALLOT_BIT;
// Shuffle is enabled as a workaround until SPIR-V >= 1.5 is enabled with broadcast(uniform)
// support.
constexpr VkSubgroupFeatureFlags required_operations =
VK_SUBGROUP_FEATURE_BASIC_BIT | VK_SUBGROUP_FEATURE_ARITHMETIC_BIT |
VK_SUBGROUP_FEATURE_BALLOT_BIT | VK_SUBGROUP_FEATURE_SHUFFLE_BIT;
m_supports_shader_subgroup_operations =
(subgroup_properties.supportedOperations & required_operations) == required_operations &&
subgroup_properties.supportedStages & VK_SHADER_STAGE_FRAGMENT_BIT &&