Implement Features::RG11B10UFLOAT_RENDERABLE

Author: jinleili

deno_webgpu/02_idl_types.js

@@ -114,6 +114,7 @@ webidl.converters["GPUFeatureName"] = webidl.createEnumConverter(
     "texture-compression-bc",
     "texture-compression-etc2",
     "texture-compression-astc",
+    "rg11b10ufloat-renderable",
 
     // extended from spec
 

deno_webgpu/lib.rs

@@ -186,6 +186,9 @@ fn deserialize_features(features: &wgpu_types::Features) -> Vec<&'static str> {
     if features.contains(wgpu_types::Features::TEXTURE_COMPRESSION_ASTC) {
         return_features.push("texture-compression-astc");
     }
+    if features.contains(wgpu_types::Features::RG11B10UFLOAT_RENDERABLE) {
+        return_features.push("rg11b10ufloat-renderable");
+    }
 
     // extended from spec
 
@@ -404,6 +407,10 @@ impl From<GpuRequiredFeatures> for wgpu_types::Features {
             wgpu_types::Features::TEXTURE_COMPRESSION_ASTC,
             required_features.0.contains("texture-compression-astc"),
         );
+        features.set(
+            wgpu_types::Features::RG11B10UFLOAT_RENDERABLE,
+            required_features.0.contains("rg11b10ufloat-renderable"),
+        );
 
         // extended from spec
 

deno_webgpu/webgpu.idl

@@ -99,6 +99,7 @@ enum GPUFeatureName {
     "texture-compression-bc",
     "texture-compression-etc2",
     "texture-compression-astc",
+    "rg11b10ufloat-renderable",
 
     // extended from spec
 

wgpu-core/src/device/mod.rs

@@ -880,7 +880,10 @@ impl<A: HalApi> Device<A> {
         let missing_allowed_usages = desc.usage - format_features.allowed_usages;
         if !missing_allowed_usages.is_empty() {
             // detect downlevel incompatibilities
-            let wgpu_allowed_usages = desc.format.guaranteed_format_features().allowed_usages;
+            let wgpu_allowed_usages = desc
+                .format
+                .guaranteed_format_features(self.features)
+                .allowed_usages;
             let wgpu_missing_usages = desc.usage - wgpu_allowed_usages;
             return Err(CreateTextureError::InvalidFormatUsages(
                 missing_allowed_usages,
@@ -3252,7 +3255,7 @@ impl<A: HalApi> Device<A> {
         if using_device_features || downlevel {
             Ok(adapter.get_texture_format_features(format))
         } else {
-            Ok(format.guaranteed_format_features())
+            Ok(format.guaranteed_format_features(self.features))
         }
     }
 

wgpu-hal/src/dx12/adapter.rs

@@ -223,7 +223,8 @@ impl super::Adapter {
             | wgt::Features::CLEAR_TEXTURE
             | wgt::Features::TEXTURE_FORMAT_16BIT_NORM
             | wgt::Features::PUSH_CONSTANTS
-            | wgt::Features::SHADER_PRIMITIVE_INDEX;
+            | wgt::Features::SHADER_PRIMITIVE_INDEX
+            | wgt::Features::RG11B10UFLOAT_RENDERABLE;
         //TODO: in order to expose this, we need to run a compute shader
         // that extract the necessary statistics out of the D3D12 result.
         // Alternatively, we could allocate a buffer for the query set,

wgpu-hal/src/metal/adapter.rs

@@ -800,6 +800,8 @@ impl super::PrivateCapabilities {
         );
         features.set(F::ADDRESS_MODE_CLAMP_TO_ZERO, true);
 
+        features.set(F::RG11B10UFLOAT_RENDERABLE, self.format_rg11b10_all);
+
         features
     }
 

wgpu-hal/src/vulkan/adapter.rs

@@ -526,6 +526,15 @@ impl PhysicalDeviceFeatures {
 
         features.set(F::DEPTH32FLOAT_STENCIL8, texture_d32_s8);
 
+        let rg11b10ufloat_renderable = supports_format(
+            instance,
+            phd,
+            vk::Format::B10G11R11_UFLOAT_PACK32,
+            vk::ImageTiling::OPTIMAL,
+            vk::FormatFeatureFlags::COLOR_ATTACHMENT | vk::FormatFeatureFlags::COLOR_ATTACHMENT_BLEND,
+        );
+        features.set(F::RG11B10UFLOAT_RENDERABLE, rg11b10ufloat_renderable);
+
         (features, dl_flags)
     }
 

wgpu-types/src/lib.rs

@@ -2712,7 +2712,7 @@ impl TextureFormat {
     /// Returns the format features guaranteed by the WebGPU spec.
     ///
     /// Additional features are available if `Features::TEXTURE_ADAPTER_SPECIFIC_FORMAT_FEATURES` is enabled.
-    pub fn guaranteed_format_features(&self) -> TextureFormatFeatures {
+    pub fn guaranteed_format_features(&self, device_features: Features) -> TextureFormatFeatures {
         // Multisampling
         let noaa = TextureFormatFeatureFlags::empty();
         let msaa = TextureFormatFeatureFlags::MULTISAMPLE_X4;
@@ -2724,6 +2724,11 @@ impl TextureFormat {
         let attachment = basic | TextureUsages::RENDER_ATTACHMENT;
         let storage = basic | TextureUsages::STORAGE_BINDING;
         let all_flags = TextureUsages::all();
+        let rg11b10f = if device_features.contains(Features::RG11B10UFLOAT_RENDERABLE) {
+            attachment
+        } else {
+            basic
+        };
 
         #[rustfmt::skip] // lets make a nice table
         let (
@@ -2755,7 +2760,7 @@ impl TextureFormat {
             Self::Bgra8Unorm =>           (msaa_resolve, attachment),
             Self::Bgra8UnormSrgb =>       (msaa_resolve, attachment),
             Self::Rgb10a2Unorm =>         (msaa_resolve, attachment),
-            Self::Rg11b10Float =>         (        msaa,      basic),
+            Self::Rg11b10Float =>         (        msaa,   rg11b10f),
             Self::Rg32Uint =>             (        noaa,  all_flags),
             Self::Rg32Sint =>             (        noaa,  all_flags),
             Self::Rg32Float =>            (        noaa,  all_flags),

wgpu/src/backend/web.rs

@@ -1099,7 +1099,7 @@ impl crate::context::Context for Context {
         _adapter_data: &Self::AdapterData,
         format: wgt::TextureFormat,
     ) -> wgt::TextureFormatFeatures {
-        format.guaranteed_format_features()
+        format.guaranteed_format_features(wgt::Features::empty())
     }
 
     fn adapter_get_presentation_timestamp(