Update gfx-hal

2024-11-22 23:11:30 +11:00 · 2020-01-19 22:17:27 +01:00 · 2020-01-19 22:17:27 +01:00 · 7c28bd34ef
parent 9f5d97a43c
commit 7c28bd34ef
6 changed files with 313 additions and 343 deletions
--- a/Cargo.lock
+++ b/Cargo.lock
@ -14,12 +14,14 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
-name = "arrayvec"
+name = "anyhow"
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+version = "1.0.26"
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 dependencies = [
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 ]
 [[package]]
 name = "ash"
@ -38,26 +40,6 @@ dependencies = [
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 [[package]]
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 [[package]]
 name = "bitflags"
 version = "1.1.0"
@ -70,7 +52,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "bumpalo"
-version = "2.6.0"
+version = "3.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
@ -200,10 +182,11 @@ dependencies = [
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-version = "0.1.0"
+version = "0.3.0"
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@ -227,26 +210,6 @@ dependencies = [
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@ -283,103 +246,125 @@ dependencies = [
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- "smallvec 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
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- "smallvec 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
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@ -387,11 +372,12 @@ dependencies = [
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-version = "0.3.0"
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-source = "git+https://github.com/gfx-rs/gfx#d4a5bb06fc3c8bb4fdbeca54b43465b6b4c9420b"
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@ -434,14 +420,14 @@ dependencies = [
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- "web-sys 0.3.27 (registry+https://github.com/rust-lang/crates.io-index)",
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@ -484,10 +470,10 @@ dependencies = [
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@ -581,11 +567,6 @@ dependencies = [
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@ -622,25 +603,23 @@ dependencies = [
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@ -768,7 +733,15 @@ dependencies = [
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--- a/libportability-gfx/Cargo.toml
+++ b/libportability-gfx/Cargo.toml
@ -14,13 +14,14 @@ name = "portability_gfx"
 [features]
 default = []
 dispatch = []
-nightly = []
+nightly = ["gfx-auxil"]
 metal-capture = ["gfx-backend-metal/auto-capture"]
 [dependencies]
 copyless = "0.1.1"
 lazy_static = "1.0"
 log = { version = "0.4", features = ["release_max_level_error"] }
 smallvec = "1.0"
 [dependencies.env_logger]
 version = "0.5"
@ -33,7 +34,6 @@ optional = true
 [dependencies.gfx-hal]
 git = "https://github.com/gfx-rs/gfx"
 #path = "../../gfx/src/hal"
 features = ["fxhash"]
 [dependencies.gfx-backend-empty]
 git = "https://github.com/gfx-rs/gfx"
@ -64,3 +64,8 @@ optional = true
 git = "https://github.com/gfx-rs/gfx"
 #path = "../../gfx/src/backend/gl"
 optional = true
 [dependencies.gfx-auxil]
 git = "https://github.com/gfx-rs/gfx"
 # path = "../../gfx/src/auxil/auxil"
 optional = true
--- a/libportability-gfx/src/conv.rs
+++ b/libportability-gfx/src/conv.rs
@ -1,5 +1,5 @@
 use hal::{buffer, command, device, format, image, memory, pass, pso, query, window};
-use hal::{Features, IndexType, Limits, PatchSize, Primitive};
+use hal::{pso::PatchSize, pso::Primitive, Features, IndexType, Limits};
 use std::mem;
@ -444,7 +444,7 @@ pub fn map_buffer_access(access: VkAccessFlags) -> buffer::Access {
        mask |= buffer::Access::VERTEX_BUFFER_READ;
    }
    if access & VkAccessFlagBits::VK_ACCESS_UNIFORM_READ_BIT as u32 != 0 {
-        mask |= buffer::Access::CONSTANT_BUFFER_READ;
+        mask |= buffer::Access::UNIFORM_READ;
    }
    if access & VkAccessFlagBits::VK_ACCESS_INDIRECT_COMMAND_READ_BIT as u32 != 0 {
        mask |= buffer::Access::INDIRECT_COMMAND_READ;
@ -502,18 +502,53 @@ pub fn memory_properties_from_hal(properties: memory::Properties) -> VkMemoryPro
 pub fn map_descriptor_type(ty: VkDescriptorType) -> pso::DescriptorType {
    use super::VkDescriptorType::*;
    // TODO(krolli): Determining value of read_only in pso::BufferDescriptorType::Storage. Vulkan storage buffer variants always allow writes.
    match ty {
        VK_DESCRIPTOR_TYPE_SAMPLER => pso::DescriptorType::Sampler,
-        VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE => pso::DescriptorType::SampledImage,
+        VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE => pso::DescriptorType::Image {
-        VK_DESCRIPTOR_TYPE_STORAGE_IMAGE => pso::DescriptorType::StorageImage,
+            ty: pso::ImageDescriptorType::Sampled {
-        VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER => pso::DescriptorType::UniformTexelBuffer,
+                with_sampler: false,
-        VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER => pso::DescriptorType::StorageTexelBuffer,
+            },
-        VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER => pso::DescriptorType::UniformBuffer,
+        },
-        VK_DESCRIPTOR_TYPE_STORAGE_BUFFER => pso::DescriptorType::StorageBuffer,
+        VK_DESCRIPTOR_TYPE_STORAGE_IMAGE => pso::DescriptorType::Image {
            ty: pso::ImageDescriptorType::Storage,
        },
        VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER => pso::DescriptorType::Buffer {
            ty: pso::BufferDescriptorType::Uniform,
            format: pso::BufferDescriptorFormat::Texel,
        },
        VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER => pso::DescriptorType::Buffer {
            ty: pso::BufferDescriptorType::Storage { read_only: false },
            format: pso::BufferDescriptorFormat::Texel,
        },
        VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER => pso::DescriptorType::Buffer {
            ty: pso::BufferDescriptorType::Uniform,
            format: pso::BufferDescriptorFormat::Structured {
                dynamic_offset: false,
            },
        },
        VK_DESCRIPTOR_TYPE_STORAGE_BUFFER => pso::DescriptorType::Buffer {
            ty: pso::BufferDescriptorType::Storage { read_only: false },
            format: pso::BufferDescriptorFormat::Structured {
                dynamic_offset: false,
            },
        },
        VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT => pso::DescriptorType::InputAttachment,
-        VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER => pso::DescriptorType::CombinedImageSampler,
+        VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER => pso::DescriptorType::Image {
-        VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC => pso::DescriptorType::UniformBufferDynamic,
+            ty: pso::ImageDescriptorType::Sampled { with_sampler: true },
-        VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC => pso::DescriptorType::StorageBufferDynamic,
+        },
        VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC => pso::DescriptorType::Buffer {
            ty: pso::BufferDescriptorType::Uniform,
            format: pso::BufferDescriptorFormat::Structured {
                dynamic_offset: true,
            },
        },
        VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC => pso::DescriptorType::Buffer {
            ty: pso::BufferDescriptorType::Storage { read_only: false },
            format: pso::BufferDescriptorFormat::Structured {
                dynamic_offset: true,
            },
        },
        _ => panic!("Unexpected descriptor type: {:?}", ty),
    }
 }
@ -556,6 +591,19 @@ pub fn map_pipeline_stage_flags(stages: VkPipelineStageFlags) -> pso::PipelineSt
    }
 }
 pub fn map_dependency_flags(dependencies: VkDependencyFlags) -> memory::Dependencies {
    let max_flag = VkDependencyFlagBits::VK_DEPENDENCY_BY_REGION_BIT as u32;
    if (dependencies & !((max_flag << 1) - 1)) == 0 {
        // HAL flags have the same numeric representation as Vulkan flags
        unsafe { mem::transmute(dependencies) }
    } else {
        // VIEW_LOCAL and DEVICE_GROUP are missing
        warn!("Unsupported dependency flags: {:?}", dependencies);
        memory::Dependencies::all()
    }
 }
 pub fn map_err_device_creation(err: device::CreationError) -> VkResult {
    use hal::device::OutOfMemory::{Device, Host};
    match err {
@ -627,21 +675,21 @@ pub fn map_front_face(face: VkFrontFace) -> pso::FrontFace {
 pub fn map_primitive_topology(
    topology: VkPrimitiveTopology,
    patch_size: PatchSize,
-) -> Option<Primitive> {
+) -> Option<(Primitive, bool)> {
    use super::VkPrimitiveTopology::*;
    Some(match topology {
-        VK_PRIMITIVE_TOPOLOGY_POINT_LIST => Primitive::PointList,
+        VK_PRIMITIVE_TOPOLOGY_POINT_LIST => (Primitive::PointList, false),
-        VK_PRIMITIVE_TOPOLOGY_LINE_LIST => Primitive::LineList,
+        VK_PRIMITIVE_TOPOLOGY_LINE_LIST => (Primitive::LineList, false),
-        VK_PRIMITIVE_TOPOLOGY_LINE_STRIP => Primitive::LineStrip,
+        VK_PRIMITIVE_TOPOLOGY_LINE_STRIP => (Primitive::LineStrip, false),
-        VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST => Primitive::TriangleList,
+        VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST => (Primitive::TriangleList, false),
-        VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP => Primitive::TriangleStrip,
+        VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP => (Primitive::TriangleStrip, false),
        VK_PRIMITIVE_TOPOLOGY_TRIANGLE_FAN => return None,
-        VK_PRIMITIVE_TOPOLOGY_LINE_LIST_WITH_ADJACENCY => Primitive::LineListAdjacency,
+        VK_PRIMITIVE_TOPOLOGY_LINE_LIST_WITH_ADJACENCY => (Primitive::LineList, true),
-        VK_PRIMITIVE_TOPOLOGY_LINE_STRIP_WITH_ADJACENCY => Primitive::LineStripAdjacency,
+        VK_PRIMITIVE_TOPOLOGY_LINE_STRIP_WITH_ADJACENCY => (Primitive::LineStrip, true),
-        VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST_WITH_ADJACENCY => Primitive::TriangleListAdjacency,
+        VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST_WITH_ADJACENCY => (Primitive::TriangleList, true),
-        VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP_WITH_ADJACENCY => Primitive::TriangleStripAdjacency,
+        VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP_WITH_ADJACENCY => (Primitive::TriangleStrip, true),
-        VK_PRIMITIVE_TOPOLOGY_PATCH_LIST => Primitive::PatchList(patch_size),
+        VK_PRIMITIVE_TOPOLOGY_PATCH_LIST => (Primitive::PatchList(patch_size), false),
        _ => return None,
    })
 }
@ -652,31 +700,27 @@ pub fn map_present_mode(present_mode: VkPresentModeKHR) -> window::PresentMode {
    unsafe { mem::transmute(present_mode) }
 }
-pub fn map_composite_alpha(composite_alpha: VkCompositeAlphaFlagBitsKHR) -> window::CompositeAlpha {
+pub fn map_composite_alpha(
    composite_alpha: VkCompositeAlphaFlagBitsKHR,
 ) -> window::CompositeAlphaMode {
    if composite_alpha == VkCompositeAlphaFlagBitsKHR::VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR {
-        window::CompositeAlpha::OPAQUE
+        window::CompositeAlphaMode::OPAQUE
    } else if composite_alpha
        == VkCompositeAlphaFlagBitsKHR::VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR
    {
-        window::CompositeAlpha::PREMULTIPLIED
+        window::CompositeAlphaMode::PREMULTIPLIED
    } else if composite_alpha
        == VkCompositeAlphaFlagBitsKHR::VK_COMPOSITE_ALPHA_POST_MULTIPLIED_BIT_KHR
    {
-        window::CompositeAlpha::POSTMULTIPLIED
+        window::CompositeAlphaMode::POSTMULTIPLIED
    } else if composite_alpha == VkCompositeAlphaFlagBitsKHR::VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR {
-        window::CompositeAlpha::INHERIT
+        window::CompositeAlphaMode::INHERIT
    } else {
        error!("Unrecognized composite alpha: {:?}", composite_alpha);
-        window::CompositeAlpha::OPAQUE
+        window::CompositeAlphaMode::OPAQUE
    }
 }
 #[inline]
 pub fn map_present_mode_from_hal(present_mode: window::PresentMode) -> VkPresentModeKHR {
    // Vulkan and HAL values are equal
    unsafe { mem::transmute(present_mode) }
 }
 #[inline]
 pub fn map_compare_op(op: VkCompareOp) -> pso::Comparison {
    // Vulkan and HAL values are equal
--- a/libportability-gfx/src/handle.rs
+++ b/libportability-gfx/src/handle.rs
@ -4,7 +4,7 @@ use std::{borrow, cmp, fmt, ops};
 use VK_NULL_HANDLE;
 #[cfg(feature = "nightly")]
-use hal::backend::FastHashMap;
+use gfx_auxil::FastHashMap;
 use copyless::{BoxAllocation, BoxHelper};
--- a/libportability-gfx/src/impls.rs
+++ b/libportability-gfx/src/impls.rs
@ -5,7 +5,7 @@ use hal::device::{Device, WaitFor};
 use hal::pool::CommandPool as _;
 use hal::pso::DescriptorPool;
 use hal::queue::{CommandQueue, QueueFamily};
-use hal::window::{Surface, Swapchain as _};
+use hal::window::{PresentMode, Surface, Swapchain as _};
 use hal::{command as com, memory, pass, pso, queue};
 use hal::{Features, Instance};
@ -2197,25 +2197,26 @@ pub extern "C" fn gfxCreateGraphicsPipelines(
                warn!("Primitive restart may not work as expected!");
            }
-            let primitive = match conv::map_primitive_topology(
+            let (primitive, with_adjacency) = match conv::map_primitive_topology(
                input_state.topology,
                tessellation_state
                    .map(|state| state.patchControlPoints as _)
                    .unwrap_or(0),
            ) {
-                Some(primitive) => primitive,
+                Some(mapped) => mapped,
                None => {
                    error!(
                        "Primitive topology {:?} is not supported",
                        input_state.topology
                    );
-                    hal::Primitive::PointList
+                    (hal::pso::Primitive::PointList, false)
                }
            };
            pso::InputAssemblerDesc {
                primitive,
-                primitive_restart: pso::PrimitiveRestart::Disabled, // TODO
+                with_adjacency,
                restart_index: None, // TODO
            }
        };
@ -2686,7 +2687,7 @@ pub extern "C" fn gfxCreateSampler(
    pSampler: *mut VkSampler,
 ) -> VkResult {
    let info = unsafe { &*pCreateInfo };
-    let gfx_info = hal::image::SamplerInfo {
+    let gfx_info = hal::image::SamplerDesc {
        min_filter: conv::map_filter(info.minFilter),
        mag_filter: conv::map_filter(info.magFilter),
        mip_filter: conv::map_mipmap_filter(info.mipmapMode),
@ -2695,8 +2696,8 @@ pub extern "C" fn gfxCreateSampler(
            conv::map_wrap_mode(info.addressModeV),
            conv::map_wrap_mode(info.addressModeW),
        ),
-        lod_bias: info.mipLodBias.into(),
+        lod_bias: hal::image::Lod(info.mipLodBias),
-        lod_range: info.minLod.into()..info.maxLod.into(),
+        lod_range: hal::image::Lod(info.minLod)..hal::image::Lod(info.maxLod),
        comparison: if info.compareEnable == VK_TRUE {
            Some(conv::map_compare_op(info.compareOp))
        } else {
@ -2710,7 +2711,7 @@ pub extern "C" fn gfxCreateSampler(
            hal::image::Anisotropic::Off
        },
    };
-    let sampler = match unsafe { gpu.device.create_sampler(gfx_info) } {
+    let sampler = match unsafe { gpu.device.create_sampler(&gfx_info) } {
        Ok(s) => s,
        Err(alloc) => return map_alloc_error(alloc),
    };
@ -2815,7 +2816,7 @@ pub extern "C" fn gfxCreateDescriptorPool(
            Ok(pool) => pool,
            Err(oom) => return map_oom(oom),
        },
-        temp_sets: Vec::with_capacity(max_sets),
+        temp_sets: SmallVec::with_capacity(max_sets),
        set_handles: if info.flags
            & VkDescriptorPoolCreateFlagBits::VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT
                as u32
@ -2945,43 +2946,54 @@ impl<'a> Iterator for DescriptorIter<'a> {
                .image_infos
                .next()
                .map(|image| pso::Descriptor::Sampler(&*image.sampler)),
-            pso::DescriptorType::InputAttachment
+
-            | pso::DescriptorType::SampledImage
+            pso::DescriptorType::Image {
-            | pso::DescriptorType::StorageImage => self.image_infos.next().map(|image| {
+                ty: pso::ImageDescriptorType::Sampled { with_sampler: true },
-                pso::Descriptor::Image(&*image.imageView, conv::map_image_layout(image.imageLayout))
+            } => self.image_infos.next().map(|image| {
            }),
            pso::DescriptorType::UniformTexelBuffer => self
                .texel_buffer_views
                .next()
                .map(|view| pso::Descriptor::UniformTexelBuffer(&**view)),
            pso::DescriptorType::StorageTexelBuffer => self
                .texel_buffer_views
                .next()
                .map(|view| pso::Descriptor::StorageTexelBuffer(&**view)),
            pso::DescriptorType::UniformBuffer
            | pso::DescriptorType::StorageBuffer
            | pso::DescriptorType::UniformBufferDynamic
            | pso::DescriptorType::StorageBufferDynamic => {
                self.buffer_infos.next().map(|buffer| {
                    let end = if buffer.range as i32 == VK_WHOLE_SIZE {
                        None
                    } else {
                        Some(buffer.offset + buffer.range)
                    };
                    pso::Descriptor::Buffer(
                        // Non-sparse buffer need to be bound to device memory.
                        &*buffer.buffer,
                        Some(buffer.offset)..end,
                    )
                })
            }
            pso::DescriptorType::CombinedImageSampler => self.image_infos.next().map(|image| {
                pso::Descriptor::CombinedImageSampler(
                    &*image.imageView,
                    conv::map_image_layout(image.imageLayout),
                    &*image.sampler,
                )
            }),
            pso::DescriptorType::InputAttachment | pso::DescriptorType::Image { .. } => {
                self.image_infos.next().map(|image| {
                    pso::Descriptor::Image(
                        &*image.imageView,
                        conv::map_image_layout(image.imageLayout),
                    )
                })
            }
            pso::DescriptorType::Buffer { ty, format } => {
                match format {
                    pso::BufferDescriptorFormat::Texel => match ty {
                        pso::BufferDescriptorType::Storage { .. } => self
                            .texel_buffer_views
                            .next()
                            .map(|view| pso::Descriptor::StorageTexelBuffer(&**view)),
                        pso::BufferDescriptorType::Uniform => self
                            .texel_buffer_views
                            .next()
                            .map(|view| pso::Descriptor::UniformTexelBuffer(&**view)),
                    },
                    pso::BufferDescriptorFormat::Structured { .. } => {
                        self.buffer_infos.next().map(|buffer| {
                            let end = if buffer.range as i32 == VK_WHOLE_SIZE {
                                None
                            } else {
                                Some(buffer.offset + buffer.range)
                            };
                            pso::Descriptor::Buffer(
                                // Non-sparse buffer need to be bound to device memory.
                                &*buffer.buffer,
                                Some(buffer.offset)..end,
                            )
                        })
                    }
                }
            }
        }
    }
 }
@ -3226,6 +3238,7 @@ pub extern "C" fn gfxCreateRenderPass(
            passes: src_pass..dst_pass,
            stages: src_stage..dst_stage,
            accesses: src_access..dst_access,
            flags: conv::map_dependency_flags(dependency.dependencyFlags),
        }
    });
@ -3349,7 +3362,7 @@ pub extern "C" fn gfxAllocateCommandBuffers(
    let output =
        unsafe { slice::from_raw_parts_mut(pCommandBuffers, info.commandBufferCount as usize) };
    for out in output.iter_mut() {
-        let cmd_buf = info.commandPool.pool.allocate_one(level);
+        let cmd_buf = unsafe { info.commandPool.pool.allocate_one(level) };
        *out = DispatchHandle::new(cmd_buf);
    }
    info.commandPool.buffers.extend_from_slice(output);
@ -4302,7 +4315,7 @@ pub extern "C" fn gfxGetPhysicalDeviceSurfaceCapabilitiesKHR(
    surface: VkSurfaceKHR,
    pSurfaceCapabilities: *mut VkSurfaceCapabilitiesKHR,
 ) -> VkResult {
-    let (caps, _, _supported_transforms) = surface.compatibility(&adapter.physical_device);
+    let caps = surface.capabilities(&adapter.physical_device);
    let output = VkSurfaceCapabilitiesKHR {
        minImageCount: *caps.image_count.start(),
@ -4320,7 +4333,7 @@ pub extern "C" fn gfxGetPhysicalDeviceSurfaceCapabilitiesKHR(
        supportedTransforms: VkSurfaceTransformFlagBitsKHR::VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR
            as _,
        currentTransform: VkSurfaceTransformFlagBitsKHR::VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR,
-        supportedCompositeAlpha: caps.composite_alpha.bits(),
+        supportedCompositeAlpha: caps.composite_alpha_modes.bits(),
        supportedUsageFlags: conv::map_image_usage_from_hal(caps.usage),
    };
@ -4336,8 +4349,7 @@ pub extern "C" fn gfxGetPhysicalDeviceSurfaceFormatsKHR(
    pSurfaceFormats: *mut VkSurfaceFormatKHR,
 ) -> VkResult {
    let formats = surface
-        .compatibility(&adapter.physical_device)
+        .supported_formats(&adapter.physical_device)
        .1
        .map(|formats| formats.into_iter().map(conv::format_from_hal).collect())
        .unwrap_or(vec![VkFormat::VK_FORMAT_UNDEFINED]);
@ -4368,29 +4380,34 @@ pub extern "C" fn gfxGetPhysicalDeviceSurfacePresentModesKHR(
    pPresentModeCount: *mut u32,
    pPresentModes: *mut VkPresentModeKHR,
 ) -> VkResult {
-    let (_, _, present_modes) = surface.compatibility(&adapter.physical_device);
+    let present_modes = surface.capabilities(&adapter.physical_device).present_modes;
-    let num_present_modes = present_modes.len();
+    let num_present_modes = present_modes.bits().count_ones();
    // If NULL, number of present modes is returned.
    if pPresentModes.is_null() {
-        unsafe { *pPresentModeCount = num_present_modes as _ };
+        unsafe { *pPresentModeCount = num_present_modes };
        return VkResult::VK_SUCCESS;
    }
-    let output = unsafe { slice::from_raw_parts_mut(pPresentModes, *pPresentModeCount as _) };
+    let num_output = unsafe { *pPresentModeCount };
-    let num_output = output.len();
+    let output = unsafe { slice::from_raw_parts_mut(pPresentModes, num_output as _) };
    let (code, count) = if num_output < num_present_modes {
        (VkResult::VK_INCOMPLETE, num_output)
    } else {
        (VkResult::VK_SUCCESS, num_present_modes)
    };
-    for (out, present_mode) in output.iter_mut().zip(present_modes) {
+    let mut out_idx = 0;
-        *out = conv::map_present_mode_from_hal(present_mode);
+    for i in 0..PresentMode::all().bits().count_ones() {
        let present_mode = PresentMode::from_bits_truncate(1 << i);
        if present_modes.contains(present_mode) {
            output[out_idx] = unsafe { mem::transmute(i) };
            out_idx += 1;
        }
    }
-    unsafe { *pPresentModeCount = count as _ };
+    unsafe { *pPresentModeCount = count };
    code
 }
@ -4419,7 +4436,7 @@ pub extern "C" fn gfxCreateSwapchainKHR(
    let config = hal::window::SwapchainConfig {
        present_mode: conv::map_present_mode(info.presentMode),
-        composite_alpha: conv::map_composite_alpha(info.compositeAlpha),
+        composite_alpha_mode: conv::map_composite_alpha(info.compositeAlpha),
        format: conv::map_format(info.imageFormat).unwrap(),
        extent: conv::map_extent2d(info.imageExtent),
        image_count: info.minImageCount,
--- a/libportability-gfx/src/lib.rs
+++ b/libportability-gfx/src/lib.rs
@ -23,6 +23,7 @@ extern crate gfx_backend_metal as back;
 #[cfg(feature = "gfx-backend-vulkan")]
 extern crate gfx_backend_vulkan as back;
 extern crate gfx_hal as hal;
 extern crate smallvec;
 extern crate copyless;
 #[macro_use]
@ -31,6 +32,8 @@ extern crate lazy_static;
 extern crate log;
 #[cfg(feature = "env_logger")]
 extern crate env_logger;
 #[cfg(feature = "nightly")]
 extern crate gfx_auxil;
 #[cfg(feature = "renderdoc")]
 extern crate renderdoc;
@ -38,6 +41,8 @@ mod conv;
 mod handle;
 mod impls;
 use smallvec::SmallVec;
 use back::Backend as B;
 use handle::{DispatchHandle, Handle};
@ -93,7 +98,7 @@ pub struct Gpu<B: hal::Backend> {
 pub struct DescriptorPool<B: hal::Backend> {
    raw: B::DescriptorPool,
-    temp_sets: Vec<B::DescriptorSet>,
+    temp_sets: SmallVec<[B::DescriptorSet; 1]>,
    set_handles: Option<Vec<VkDescriptorSet>>,
 }