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#[cfg(any(feature = "dx11", feature = "dx12"))]
pub(super) mod dxgi;
#[cfg(feature = "renderdoc")]
pub(super) mod renderdoc;
pub mod db {
pub mod amd {
pub const VENDOR: u32 = 0x1002;
}
pub mod apple {
pub const VENDOR: u32 = 0x106B;
}
pub mod arm {
pub const VENDOR: u32 = 0x13B5;
}
pub mod broadcom {
pub const VENDOR: u32 = 0x14E4;
}
pub mod imgtec {
pub const VENDOR: u32 = 0x1010;
}
pub mod intel {
pub const VENDOR: u32 = 0x8086;
pub const DEVICE_KABY_LAKE_MASK: u32 = 0x5900;
pub const DEVICE_SKY_LAKE_MASK: u32 = 0x1900;
}
pub mod mesa {
// Mesa does not actually have a PCI vendor id.
//
// To match Vulkan, we use the VkVendorId for Mesa in the gles backend so that lavapipe (Vulkan) and
// llvmpipe (OpenGL) have the same vendor id.
pub const VENDOR: u32 = 0x10005;
}
pub mod nvidia {
pub const VENDOR: u32 = 0x10DE;
}
pub mod qualcomm {
pub const VENDOR: u32 = 0x5143;
}
}
/// Maximum binding size for the shaders that only support `i32` indexing.
/// Interestingly, the index itself can't reach that high, because the minimum
/// element size is 4 bytes, but the compiler toolchain still computes the
/// offset at some intermediate point, internally, as i32.
pub const MAX_I32_BINDING_SIZE: u32 = 1 << 31;
pub fn map_naga_stage(stage: naga::ShaderStage) -> wgt::ShaderStages {
match stage {
naga::ShaderStage::Vertex => wgt::ShaderStages::VERTEX,
naga::ShaderStage::Fragment => wgt::ShaderStages::FRAGMENT,
naga::ShaderStage::Compute => wgt::ShaderStages::COMPUTE,
}
}
pub fn align_to(value: u32, alignment: u32) -> u32 {
if alignment.is_power_of_two() {
(value + alignment - 1) & !(alignment - 1)
} else {
match value % alignment {
0 => value,
other => value - other + alignment,
}
}
}
impl crate::CopyExtent {
pub fn map_extent_to_copy_size(extent: &wgt::Extent3d, dim: wgt::TextureDimension) -> Self {
Self {
width: extent.width,
height: extent.height,
depth: match dim {
wgt::TextureDimension::D1 | wgt::TextureDimension::D2 => 1,
wgt::TextureDimension::D3 => extent.depth_or_array_layers,
},
}
}
pub fn min(&self, other: &Self) -> Self {
Self {
width: self.width.min(other.width),
height: self.height.min(other.height),
depth: self.depth.min(other.depth),
}
}
// Get the copy size at a specific mipmap level. This doesn't make most sense,
// since the copy extents are provided *for* a mipmap level to start with.
// But backends use `CopyExtent` more sparingly, and this piece is shared.
pub fn at_mip_level(&self, level: u32) -> Self {
Self {
width: (self.width >> level).max(1),
height: (self.height >> level).max(1),
depth: (self.depth >> level).max(1),
}
}
}
impl crate::TextureCopyBase {
pub fn max_copy_size(&self, full_size: &crate::CopyExtent) -> crate::CopyExtent {
let mip = full_size.at_mip_level(self.mip_level);
crate::CopyExtent {
width: mip.width - self.origin.x,
height: mip.height - self.origin.y,
depth: mip.depth - self.origin.z,
}
}
}
impl crate::BufferTextureCopy {
pub fn clamp_size_to_virtual(&mut self, full_size: &crate::CopyExtent) {
let max_size = self.texture_base.max_copy_size(full_size);
self.size = self.size.min(&max_size);
}
}
impl crate::TextureCopy {
pub fn clamp_size_to_virtual(
&mut self,
full_src_size: &crate::CopyExtent,
full_dst_size: &crate::CopyExtent,
) {
let max_src_size = self.src_base.max_copy_size(full_src_size);
let max_dst_size = self.dst_base.max_copy_size(full_dst_size);
self.size = self.size.min(&max_src_size).min(&max_dst_size);
}
}
/// Construct a `CStr` from a byte slice, up to the first zero byte.
///
/// Return a `CStr` extending from the start of `bytes` up to and
/// including the first zero byte. If there is no zero byte in
/// `bytes`, return `None`.
///
/// This can be removed when `CStr::from_bytes_until_nul` is stabilized.
/// ([#95027](https://github.com/rust-lang/rust/issues/95027))
#[allow(dead_code)]
pub(crate) fn cstr_from_bytes_until_nul(bytes: &[std::os::raw::c_char]) -> Option<&std::ffi::CStr> {
if bytes.contains(&0) {
// Safety for `CStr::from_ptr`:
// - We've ensured that the slice does contain a null terminator.
// - The range is valid to read, because the slice covers it.
// - The memory won't be changed, because the slice borrows it.
unsafe { Some(std::ffi::CStr::from_ptr(bytes.as_ptr())) }
} else {
None
}
}
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