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-rw-r--r--third_party/rust/wgpu-hal/src/metal/conv.rs300
1 files changed, 300 insertions, 0 deletions
diff --git a/third_party/rust/wgpu-hal/src/metal/conv.rs b/third_party/rust/wgpu-hal/src/metal/conv.rs
new file mode 100644
index 0000000000..75ed58df24
--- /dev/null
+++ b/third_party/rust/wgpu-hal/src/metal/conv.rs
@@ -0,0 +1,300 @@
+pub fn map_texture_usage(usage: crate::TextureUses) -> mtl::MTLTextureUsage {
+ use crate::TextureUses as Tu;
+
+ let mut mtl_usage = mtl::MTLTextureUsage::Unknown;
+
+ mtl_usage.set(
+ mtl::MTLTextureUsage::RenderTarget,
+ usage.intersects(Tu::COLOR_TARGET | Tu::DEPTH_STENCIL_READ | Tu::DEPTH_STENCIL_WRITE),
+ );
+ mtl_usage.set(
+ mtl::MTLTextureUsage::ShaderRead,
+ usage.intersects(
+ Tu::RESOURCE | Tu::DEPTH_STENCIL_READ | Tu::STORAGE_READ | Tu::STORAGE_READ_WRITE,
+ ),
+ );
+ mtl_usage.set(
+ mtl::MTLTextureUsage::ShaderWrite,
+ usage.intersects(Tu::STORAGE_READ_WRITE),
+ );
+
+ mtl_usage
+}
+
+pub fn map_texture_view_dimension(dim: wgt::TextureViewDimension) -> mtl::MTLTextureType {
+ use mtl::MTLTextureType::*;
+ use wgt::TextureViewDimension as Tvd;
+ match dim {
+ Tvd::D1 => D1,
+ Tvd::D2 => D2,
+ Tvd::D2Array => D2Array,
+ Tvd::D3 => D3,
+ Tvd::Cube => Cube,
+ Tvd::CubeArray => CubeArray,
+ }
+}
+
+pub fn map_compare_function(fun: wgt::CompareFunction) -> mtl::MTLCompareFunction {
+ use mtl::MTLCompareFunction::*;
+ use wgt::CompareFunction as Cf;
+ match fun {
+ Cf::Never => Never,
+ Cf::Less => Less,
+ Cf::LessEqual => LessEqual,
+ Cf::Equal => Equal,
+ Cf::GreaterEqual => GreaterEqual,
+ Cf::Greater => Greater,
+ Cf::NotEqual => NotEqual,
+ Cf::Always => Always,
+ }
+}
+
+pub fn map_filter_mode(filter: wgt::FilterMode) -> mtl::MTLSamplerMinMagFilter {
+ use mtl::MTLSamplerMinMagFilter::*;
+ match filter {
+ wgt::FilterMode::Nearest => Nearest,
+ wgt::FilterMode::Linear => Linear,
+ }
+}
+
+pub fn map_address_mode(address: wgt::AddressMode) -> mtl::MTLSamplerAddressMode {
+ use mtl::MTLSamplerAddressMode::*;
+ use wgt::AddressMode as Fm;
+ match address {
+ Fm::Repeat => Repeat,
+ Fm::MirrorRepeat => MirrorRepeat,
+ Fm::ClampToEdge => ClampToEdge,
+ Fm::ClampToBorder => ClampToBorderColor,
+ //Fm::MirrorClamp => MirrorClampToEdge,
+ }
+}
+
+pub fn map_border_color(border_color: wgt::SamplerBorderColor) -> mtl::MTLSamplerBorderColor {
+ use mtl::MTLSamplerBorderColor::*;
+ match border_color {
+ wgt::SamplerBorderColor::TransparentBlack => TransparentBlack,
+ wgt::SamplerBorderColor::OpaqueBlack => OpaqueBlack,
+ wgt::SamplerBorderColor::OpaqueWhite => OpaqueWhite,
+ wgt::SamplerBorderColor::Zero => unreachable!(),
+ }
+}
+
+pub fn map_primitive_topology(
+ topology: wgt::PrimitiveTopology,
+) -> (mtl::MTLPrimitiveTopologyClass, mtl::MTLPrimitiveType) {
+ use wgt::PrimitiveTopology as Pt;
+ match topology {
+ Pt::PointList => (
+ mtl::MTLPrimitiveTopologyClass::Point,
+ mtl::MTLPrimitiveType::Point,
+ ),
+ Pt::LineList => (
+ mtl::MTLPrimitiveTopologyClass::Line,
+ mtl::MTLPrimitiveType::Line,
+ ),
+ Pt::LineStrip => (
+ mtl::MTLPrimitiveTopologyClass::Line,
+ mtl::MTLPrimitiveType::LineStrip,
+ ),
+ Pt::TriangleList => (
+ mtl::MTLPrimitiveTopologyClass::Triangle,
+ mtl::MTLPrimitiveType::Triangle,
+ ),
+ Pt::TriangleStrip => (
+ mtl::MTLPrimitiveTopologyClass::Triangle,
+ mtl::MTLPrimitiveType::TriangleStrip,
+ ),
+ }
+}
+
+pub fn map_color_write(mask: wgt::ColorWrites) -> mtl::MTLColorWriteMask {
+ let mut raw_mask = mtl::MTLColorWriteMask::empty();
+
+ if mask.contains(wgt::ColorWrites::RED) {
+ raw_mask |= mtl::MTLColorWriteMask::Red;
+ }
+ if mask.contains(wgt::ColorWrites::GREEN) {
+ raw_mask |= mtl::MTLColorWriteMask::Green;
+ }
+ if mask.contains(wgt::ColorWrites::BLUE) {
+ raw_mask |= mtl::MTLColorWriteMask::Blue;
+ }
+ if mask.contains(wgt::ColorWrites::ALPHA) {
+ raw_mask |= mtl::MTLColorWriteMask::Alpha;
+ }
+
+ raw_mask
+}
+
+pub fn map_blend_factor(factor: wgt::BlendFactor) -> mtl::MTLBlendFactor {
+ use mtl::MTLBlendFactor::*;
+ use wgt::BlendFactor as Bf;
+
+ match factor {
+ Bf::Zero => Zero,
+ Bf::One => One,
+ Bf::Src => SourceColor,
+ Bf::OneMinusSrc => OneMinusSourceColor,
+ Bf::Dst => DestinationColor,
+ Bf::OneMinusDst => OneMinusDestinationColor,
+ Bf::SrcAlpha => SourceAlpha,
+ Bf::OneMinusSrcAlpha => OneMinusSourceAlpha,
+ Bf::DstAlpha => DestinationAlpha,
+ Bf::OneMinusDstAlpha => OneMinusDestinationAlpha,
+ Bf::Constant => BlendColor,
+ Bf::OneMinusConstant => OneMinusBlendColor,
+ //Bf::ConstantAlpha => BlendAlpha,
+ //Bf::OneMinusConstantAlpha => OneMinusBlendAlpha,
+ Bf::SrcAlphaSaturated => SourceAlphaSaturated,
+ //Bf::Src1 => Source1Color,
+ //Bf::OneMinusSrc1 => OneMinusSource1Color,
+ //Bf::Src1Alpha => Source1Alpha,
+ //Bf::OneMinusSrc1Alpha => OneMinusSource1Alpha,
+ }
+}
+
+pub fn map_blend_op(operation: wgt::BlendOperation) -> mtl::MTLBlendOperation {
+ use mtl::MTLBlendOperation::*;
+ use wgt::BlendOperation as Bo;
+
+ match operation {
+ Bo::Add => Add,
+ Bo::Subtract => Subtract,
+ Bo::ReverseSubtract => ReverseSubtract,
+ Bo::Min => Min,
+ Bo::Max => Max,
+ }
+}
+
+pub fn map_blend_component(
+ component: &wgt::BlendComponent,
+) -> (
+ mtl::MTLBlendOperation,
+ mtl::MTLBlendFactor,
+ mtl::MTLBlendFactor,
+) {
+ (
+ map_blend_op(component.operation),
+ map_blend_factor(component.src_factor),
+ map_blend_factor(component.dst_factor),
+ )
+}
+
+pub fn map_vertex_format(format: wgt::VertexFormat) -> mtl::MTLVertexFormat {
+ use mtl::MTLVertexFormat::*;
+ use wgt::VertexFormat as Vf;
+
+ match format {
+ Vf::Unorm8x2 => UChar2Normalized,
+ Vf::Snorm8x2 => Char2Normalized,
+ Vf::Uint8x2 => UChar2,
+ Vf::Sint8x2 => Char2,
+ Vf::Unorm8x4 => UChar4Normalized,
+ Vf::Snorm8x4 => Char4Normalized,
+ Vf::Uint8x4 => UChar4,
+ Vf::Sint8x4 => Char4,
+ Vf::Unorm16x2 => UShort2Normalized,
+ Vf::Snorm16x2 => Short2Normalized,
+ Vf::Uint16x2 => UShort2,
+ Vf::Sint16x2 => Short2,
+ Vf::Float16x2 => Half2,
+ Vf::Unorm16x4 => UShort4Normalized,
+ Vf::Snorm16x4 => Short4Normalized,
+ Vf::Uint16x4 => UShort4,
+ Vf::Sint16x4 => Short4,
+ Vf::Float16x4 => Half4,
+ Vf::Uint32 => UInt,
+ Vf::Sint32 => Int,
+ Vf::Float32 => Float,
+ Vf::Uint32x2 => UInt2,
+ Vf::Sint32x2 => Int2,
+ Vf::Float32x2 => Float2,
+ Vf::Uint32x3 => UInt3,
+ Vf::Sint32x3 => Int3,
+ Vf::Float32x3 => Float3,
+ Vf::Uint32x4 => UInt4,
+ Vf::Sint32x4 => Int4,
+ Vf::Float32x4 => Float4,
+ Vf::Float64 | Vf::Float64x2 | Vf::Float64x3 | Vf::Float64x4 => unimplemented!(),
+ }
+}
+
+pub fn map_step_mode(mode: wgt::VertexStepMode) -> mtl::MTLVertexStepFunction {
+ match mode {
+ wgt::VertexStepMode::Vertex => mtl::MTLVertexStepFunction::PerVertex,
+ wgt::VertexStepMode::Instance => mtl::MTLVertexStepFunction::PerInstance,
+ }
+}
+
+pub fn map_stencil_op(op: wgt::StencilOperation) -> mtl::MTLStencilOperation {
+ use mtl::MTLStencilOperation::*;
+ use wgt::StencilOperation as So;
+
+ match op {
+ So::Keep => Keep,
+ So::Zero => Zero,
+ So::Replace => Replace,
+ So::IncrementClamp => IncrementClamp,
+ So::IncrementWrap => IncrementWrap,
+ So::DecrementClamp => DecrementClamp,
+ So::DecrementWrap => DecrementWrap,
+ So::Invert => Invert,
+ }
+}
+
+pub fn map_winding(winding: wgt::FrontFace) -> mtl::MTLWinding {
+ match winding {
+ wgt::FrontFace::Cw => mtl::MTLWinding::Clockwise,
+ wgt::FrontFace::Ccw => mtl::MTLWinding::CounterClockwise,
+ }
+}
+
+pub fn map_cull_mode(face: Option<wgt::Face>) -> mtl::MTLCullMode {
+ match face {
+ None => mtl::MTLCullMode::None,
+ Some(wgt::Face::Front) => mtl::MTLCullMode::Front,
+ Some(wgt::Face::Back) => mtl::MTLCullMode::Back,
+ }
+}
+
+pub fn map_range(range: &crate::MemoryRange) -> mtl::NSRange {
+ mtl::NSRange {
+ location: range.start,
+ length: range.end - range.start,
+ }
+}
+
+pub fn map_copy_extent(extent: &crate::CopyExtent) -> mtl::MTLSize {
+ mtl::MTLSize {
+ width: extent.width as u64,
+ height: extent.height as u64,
+ depth: extent.depth as u64,
+ }
+}
+
+pub fn map_origin(origin: &wgt::Origin3d) -> mtl::MTLOrigin {
+ mtl::MTLOrigin {
+ x: origin.x as u64,
+ y: origin.y as u64,
+ z: origin.z as u64,
+ }
+}
+
+pub fn map_store_action(store: bool, resolve: bool) -> mtl::MTLStoreAction {
+ use mtl::MTLStoreAction::*;
+ match (store, resolve) {
+ (true, true) => StoreAndMultisampleResolve,
+ (false, true) => MultisampleResolve,
+ (true, false) => Store,
+ (false, false) => DontCare,
+ }
+}
+
+pub fn map_clear_color(color: &wgt::Color) -> mtl::MTLClearColor {
+ mtl::MTLClearColor {
+ red: color.r,
+ green: color.g,
+ blue: color.b,
+ alpha: color.a,
+ }
+}