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Add MULTISAMPLED_SHADING downlevel flag (#2425)

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* Fix msaa-line example's unnecessary MSAA data store

* Add MULTISAMPLED_SHADING downlevel flag
This commit is contained in:
Jinlei Li
2022-01-28 12:29:40 +08:00
committed by GitHub
parent b19000367c
commit 9cff141d7f
2 changed files with 7 additions and 8 deletions
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12
wgpu-hal/src/vulkan/adapter.rs
View File

@@ -100,7 +100,9 @@ impl PhysicalDeviceFeatures {
core: vk::PhysicalDeviceFeatures::builder()
.robust_buffer_access(private_caps.robust_buffer_access)
.independent_blend(true)
.sample_rate_shading(true)
.sample_rate_shading(
downlevel_flags.contains(wgt::DownlevelFlags::MULTISAMPLED_SHADING),
)
.image_cube_array(
downlevel_flags.contains(wgt::DownlevelFlags::CUBE_ARRAY_TEXTURES),
)
@@ -342,6 +344,7 @@ impl PhysicalDeviceFeatures {
Df::FRAGMENT_WRITABLE_STORAGE,
self.core.fragment_stores_and_atomics != 0,
);
dl_flags.set(Df::MULTISAMPLED_SHADING, self.core.sample_rate_shading != 0);
features.set(
F::INDIRECT_FIRST_INSTANCE,
@@ -929,13 +932,6 @@ impl super::Instance {
);
return None;
}
if phd_features.core.sample_rate_shading == 0 {
log::warn!(
"sample_rate_shading feature is not supported, hiding adapter: {}",
info.name
);
return None;
}
if !phd_capabilities.supports_extension(vk::AmdNegativeViewportHeightFn::name())
&& !phd_capabilities.supports_extension(vk::KhrMaintenance1Fn::name())
&& phd_capabilities.properties.api_version < vk::API_VERSION_1_2

3
wgpu-types/src/lib.rs
View File

@@ -909,6 +909,9 @@ bitflags::bitflags! {
/// Supports storage buffers in fragment shaders.
const FRAGMENT_STORAGE = 1 << 12;
/// Supports sample shading and multisample interpolation.
const MULTISAMPLED_SHADING = 1 << 13;
}
}