Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 218 insertions, 0 deletions

diff --git a/gfx/wgpu_bindings/src/lib.rs b/gfx/wgpu_bindings/src/lib.rs
new file mode 100644
index 0000000000..de34649c95
--- /dev/null
+++ b/gfx/wgpu_bindings/src/lib.rs
@@ -0,0 +1,218 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use wgc::id;
+
+pub use wgc::command::{compute_ffi::*, render_ffi::*};
+
+pub mod client;
+pub mod identity;
+pub mod server;
+
+pub use wgc::device::trace::Command as CommandEncoderAction;
+
+use std::marker::PhantomData;
+use std::{borrow::Cow, mem, slice};
+
+use nsstring::nsACString;
+
+type RawString = *const std::os::raw::c_char;
+
+//TODO: figure out why 'a and 'b have to be different here
+//TODO: remove this
+fn cow_label<'a, 'b>(raw: &'a RawString) -> Option<Cow<'b, str>> {
+    if raw.is_null() {
+        None
+    } else {
+        let cstr = unsafe { std::ffi::CStr::from_ptr(*raw) };
+        cstr.to_str().ok().map(Cow::Borrowed)
+    }
+}
+
+// Hides the repeated boilerplate of turning a `Option<&nsACString>` into a `Option<Cow<str>`.
+pub fn wgpu_string(gecko_string: Option<&nsACString>) -> Option<Cow<str>> {
+    gecko_string.map(|s| s.to_utf8())
+}
+
+/// An equivalent of `&[T]` for ffi structures and function parameters.
+#[repr(C)]
+pub struct FfiSlice<'a, T> {
+    // `data` may be null.
+    pub data: *const T,
+    pub length: usize,
+    pub _marker: PhantomData<&'a T>,
+}
+
+impl<'a, T> FfiSlice<'a, T> {
+    pub unsafe fn as_slice(&self) -> &'a [T] {
+        if self.data.is_null() {
+            // It is invalid to construct a rust slice with a null pointer.
+            return &[];
+        }
+
+        std::slice::from_raw_parts(self.data, self.length)
+    }
+}
+
+impl<'a, T> Copy for FfiSlice<'a, T> {}
+impl<'a, T> Clone for FfiSlice<'a, T> {
+    fn clone(&self) -> Self {
+        *self
+    }
+}
+
+#[repr(C)]
+pub struct ByteBuf {
+    data: *const u8,
+    len: usize,
+    capacity: usize,
+}
+
+impl ByteBuf {
+    fn from_vec(vec: Vec<u8>) -> Self {
+        if vec.is_empty() {
+            ByteBuf {
+                data: std::ptr::null(),
+                len: 0,
+                capacity: 0,
+            }
+        } else {
+            let bb = ByteBuf {
+                data: vec.as_ptr(),
+                len: vec.len(),
+                capacity: vec.capacity(),
+            };
+            mem::forget(vec);
+            bb
+        }
+    }
+
+    unsafe fn as_slice(&self) -> &[u8] {
+        slice::from_raw_parts(self.data, self.len)
+    }
+}
+
+#[repr(C)]
+#[derive(serde::Serialize, serde::Deserialize)]
+pub struct AdapterInformation<S> {
+    id: id::AdapterId,
+    limits: wgt::Limits,
+    features: wgt::Features,
+    name: S,
+    vendor: u32,
+    device: u32,
+    device_type: wgt::DeviceType,
+    driver: S,
+    driver_info: S,
+    backend: wgt::Backend,
+}
+
+#[derive(serde::Serialize, serde::Deserialize)]
+struct ImplicitLayout<'a> {
+    pipeline: id::PipelineLayoutId,
+    bind_groups: Cow<'a, [id::BindGroupLayoutId]>,
+}
+
+#[derive(serde::Serialize, serde::Deserialize)]
+enum DeviceAction<'a> {
+    CreateTexture(id::TextureId, wgc::resource::TextureDescriptor<'a>),
+    CreateSampler(id::SamplerId, wgc::resource::SamplerDescriptor<'a>),
+    CreateBindGroupLayout(
+        id::BindGroupLayoutId,
+        wgc::binding_model::BindGroupLayoutDescriptor<'a>,
+    ),
+    CreatePipelineLayout(
+        id::PipelineLayoutId,
+        wgc::binding_model::PipelineLayoutDescriptor<'a>,
+    ),
+    CreateBindGroup(id::BindGroupId, wgc::binding_model::BindGroupDescriptor<'a>),
+    CreateShaderModule(
+        id::ShaderModuleId,
+        wgc::pipeline::ShaderModuleDescriptor<'a>,
+        Cow<'a, str>,
+    ),
+    CreateComputePipeline(
+        id::ComputePipelineId,
+        wgc::pipeline::ComputePipelineDescriptor<'a>,
+        Option<ImplicitLayout<'a>>,
+    ),
+    CreateRenderPipeline(
+        id::RenderPipelineId,
+        wgc::pipeline::RenderPipelineDescriptor<'a>,
+        Option<ImplicitLayout<'a>>,
+    ),
+    CreateRenderBundle(
+        id::RenderBundleId,
+        wgc::command::RenderBundleEncoder,
+        wgc::command::RenderBundleDescriptor<'a>,
+    ),
+    CreateCommandEncoder(
+        id::CommandEncoderId,
+        wgt::CommandEncoderDescriptor<wgc::Label<'a>>,
+    ),
+    Error(String),
+}
+
+#[derive(serde::Serialize, serde::Deserialize)]
+enum QueueWriteAction {
+    Buffer {
+        dst: id::BufferId,
+        offset: wgt::BufferAddress,
+    },
+    Texture {
+        dst: wgt::ImageCopyTexture<id::TextureId>,
+        layout: wgt::ImageDataLayout,
+        size: wgt::Extent3d,
+    },
+}
+
+#[derive(serde::Serialize, serde::Deserialize)]
+enum TextureAction<'a> {
+    CreateView(id::TextureViewId, wgc::resource::TextureViewDescriptor<'a>),
+}
+
+#[repr(C)]
+#[derive(serde::Serialize, serde::Deserialize)]
+enum DropAction {
+    Adapter(id::AdapterId),
+    Device(id::DeviceId),
+    ShaderModule(id::ShaderModuleId),
+    PipelineLayout(id::PipelineLayoutId),
+    BindGroupLayout(id::BindGroupLayoutId),
+    BindGroup(id::BindGroupId),
+    CommandBuffer(id::CommandBufferId),
+    RenderBundle(id::RenderBundleId),
+    RenderPipeline(id::RenderPipelineId),
+    ComputePipeline(id::ComputePipelineId),
+    Buffer(id::BufferId),
+    Texture(id::TextureId),
+    TextureView(id::TextureViewId),
+    Sampler(id::SamplerId),
+}
+
+impl DropAction {
+    // helper function to construct byte bufs
+    fn to_byte_buf(&self) -> ByteBuf {
+        let mut data = Vec::new();
+        bincode::serialize_into(&mut data, self).unwrap();
+        ByteBuf::from_vec(data)
+    }
+}
+
+#[repr(C)]
+pub struct ImageDataLayout<'a> {
+    pub offset: wgt::BufferAddress,
+    pub bytes_per_row: Option<&'a u32>,
+    pub rows_per_image: Option<&'a u32>,
+}
+
+impl<'a> ImageDataLayout<'a> {
+    fn into_wgt(&self) -> wgt::ImageDataLayout {
+        wgt::ImageDataLayout {
+            offset: self.offset,
+            bytes_per_row: self.bytes_per_row.map(|bpr| *bpr),
+            rows_per_image: self.rows_per_image.map(|rpi| *rpi),
+        }
+    }
+}