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VideoBackend/OGL: Prefer KHR_subgroup over NV_shader_thread.

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While the NV extension is totally fine, the KHR extension should be able to support more hardware.

For NVIDIA, the hardware either supports both or neither, it just needs a driver from the last two years.
For AMD, the drivers from late 2022-12 seems to bring support for the KHR extension.
For Intel, the KHR is also supported for some years.
This commit is contained in:
degasus
2023-01-31 18:10:48 +01:00
parent aaad0cd39f
commit 4b2aa948e6
8 changed files with 66 additions and 33 deletions
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Source/Core/VideoBackends/Metal/MTLUtil.mm
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@ -386,7 +386,6 @@ static const std::string_view SUBGROUP_HELPER_HEADER = R"(
#extension GL_KHR_shader_subgroup_ballot : enable
#define SUPPORTS_SUBGROUP_REDUCTION 1
#define CAN_USE_SUBGROUP_REDUCTION true
#define IS_HELPER_INVOCATION gl_HelperInvocation
#define IS_FIRST_ACTIVE_INVOCATION (subgroupElect())
#define SUBGROUP_MIN(value) value = subgroupMin(value)