15.3. Raster operations (pixel copy, convert, SIMD gather/scatter)

SIMD-accelerated pixel operations — gather, scatter, copy, channel conversion, and BPC conversion.

15.3.1. Gather

• gather (from: int const?; index4: uint4) : int4

• gather (from: float const?; index4: uint4) : float4

• gather (from: float const?; index4: int4) : float4

• gather (from: uint const?; index4: uint4) : uint4

• gather (from: uint const?; index4: int4) : uint4

• gather (from: int const?; index4: int4) : int4

15.3.1.1. gather

gather(from: int const?; index4: uint4): int4

Warning

This is unsafe operation.

Gather pixels from source using an index array into destination.

Arguments:

• from : int? implicit

• index4 : uint4

gather(from: float const?; index4: uint4): float4

gather(from: float const?; index4: int4): float4

gather(from: uint const?; index4: uint4): uint4

gather(from: uint const?; index4: int4): uint4

gather(from: int const?; index4: int4): int4

15.3.2. Scatter

• scatter (to: int?; index4: uint4; from: int4)

• scatter (to: float?; index4: uint4; from: float4)

• scatter (to: float?; index4: int4; from: float4)

• scatter (to: uint?; index4: uint4; from: uint4)

• scatter (to: uint?; index4: int4; from: uint4)

• scatter (to: int?; index4: int4; from: int4)

15.3.2.1. scatter

scatter(to: int?; index4: uint4; from: int4)

Warning

This is unsafe operation.

Scatter pixels from source to destination using an index array.

Arguments:

• to : int? implicit

• index4 : uint4

• from : int4

scatter(to: float?; index4: uint4; from: float4)

scatter(to: float?; index4: int4; from: float4)

scatter(to: uint?; index4: uint4; from: uint4)

scatter(to: uint?; index4: int4; from: uint4)

scatter(to: int?; index4: int4; from: int4)

15.3.3. Scatter with mask

• scatter_neq_mask (to: int?; index4: uint4; from: int4; mask: int4)

• scatter_neq_mask (to: float?; index4: uint4; from: float4; mask: float4)

• scatter_neq_mask (to: float?; index4: int4; from: float4; mask: float4)

• scatter_neq_mask (to: uint?; index4: uint4; from: uint4; mask: uint4)

• scatter_neq_mask (to: uint?; index4: int4; from: uint4; mask: uint4)

• scatter_neq_mask (to: int?; index4: int4; from: int4; mask: int4)

15.3.3.1. scatter_neq_mask

scatter_neq_mask(to: int?; index4: uint4; from: int4; mask: int4)

Warning

This is unsafe operation.

Scatter pixels to destination where mask value differs from pixel value.

Arguments:

• to : int? implicit

• index4 : uint4

• from : int4

• mask : int4

scatter_neq_mask(to: float?; index4: uint4; from: float4; mask: float4)

scatter_neq_mask(to: float?; index4: int4; from: float4; mask: float4)

scatter_neq_mask(to: uint?; index4: uint4; from: uint4; mask: uint4)

scatter_neq_mask(to: uint?; index4: int4; from: uint4; mask: uint4)

scatter_neq_mask(to: int?; index4: int4; from: int4; mask: int4)

15.3.4. Store with mask

• store_neq_mask (to: int4?; from: int4; mask: int4)

• store_neq_mask (to: float4?; from: float4; mask: float4)

• store_neq_mask (to: uint4?; from: uint4; mask: uint4)

15.3.4.1. store_neq_mask

store_neq_mask(to: int4?; from: int4; mask: int4)

Store a single pixel at indexed positions where mask differs.

Arguments:

• to : int4? implicit

• from : int4

• mask : int4

store_neq_mask(to: float4?; from: float4; mask: float4)

store_neq_mask(to: uint4?; from: uint4; mask: uint4)

15.3.5. Gather-scatter

• gather_scatter (to: int?; to_index4: uint4; from: int const?; from_index4: uint4)

• gather_scatter (to: float?; to_index4: uint4; from: float const?; from_index4: uint4)

• gather_scatter (to: float?; to_index4: int4; from: float const?; from_index4: int4)

• gather_scatter (to: uint?; to_index4: uint4; from: uint const?; from_index4: uint4)

• gather_scatter (to: uint?; to_index4: int4; from: uint const?; from_index4: int4)

• gather_scatter (to: int?; to_index4: int4; from: int const?; from_index4: int4)

15.3.5.1. gather_scatter

gather_scatter(to: int?; to_index4: uint4; from: int const?; from_index4: uint4)

Warning

This is unsafe operation.

Gather pixels from source and scatter to destination using index arrays.

Arguments:

• to : int? implicit

• to_index4 : uint4

• from : int? implicit

• from_index4 : uint4

gather_scatter(to: float?; to_index4: uint4; from: float const?; from_index4: uint4)

gather_scatter(to: float?; to_index4: int4; from: float const?; from_index4: int4)

gather_scatter(to: uint?; to_index4: uint4; from: uint const?; from_index4: uint4)

gather_scatter(to: uint?; to_index4: int4; from: uint const?; from_index4: int4)

gather_scatter(to: int?; to_index4: int4; from: int const?; from_index4: int4)

15.3.6. Gather-scatter with mask

• gather_scatter_neq_mask (to: int?; to_index4: uint4; from: int const?; from_index4: uint4; mask: int4)

• gather_scatter_neq_mask (to: float?; to_index4: uint4; from: float const?; from_index4: uint4; mask: float4)

• gather_scatter_neq_mask (to: float?; to_index4: int4; from: float const?; from_index4: int4; mask: float4)

• gather_scatter_neq_mask (to: uint?; to_index4: uint4; from: uint const?; from_index4: uint4; mask: uint4)

• gather_scatter_neq_mask (to: uint?; to_index4: int4; from: uint const?; from_index4: int4; mask: uint4)

• gather_scatter_neq_mask (to: int?; to_index4: int4; from: int const?; from_index4: int4; mask: int4)

15.3.6.1. gather_scatter_neq_mask

gather_scatter_neq_mask(to: int?; to_index4: uint4; from: int const?; from_index4: uint4; mask: int4)

Warning

This is unsafe operation.

Gather-scatter pixels where mask value differs from gathered pixel.

Arguments:

• to : int? implicit

• to_index4 : uint4

• from : int? implicit

• from_index4 : uint4

• mask : int4

gather_scatter_neq_mask(to: float?; to_index4: uint4; from: float const?; from_index4: uint4; mask: float4)

gather_scatter_neq_mask(to: float?; to_index4: int4; from: float const?; from_index4: int4; mask: float4)

gather_scatter_neq_mask(to: uint?; to_index4: uint4; from: uint const?; from_index4: uint4; mask: uint4)

gather_scatter_neq_mask(to: uint?; to_index4: int4; from: uint const?; from_index4: int4; mask: uint4)

gather_scatter_neq_mask(to: int?; to_index4: int4; from: int const?; from_index4: int4; mask: int4)

15.3.7. Gather-store with mask

• gather_store_neq_mask (to: int4?; from: int const?; from_index4: uint4; mask: int4)

• gather_store_neq_mask (to: float4?; from: float const?; from_index4: uint4; mask: float4)

• gather_store_neq_mask (to: float4?; from: float const?; from_index4: int4; mask: float4)

• gather_store_neq_mask (to: uint4?; from: uint const?; from_index4: uint4; mask: uint4)

• gather_store_neq_mask (to: uint4?; from: uint const?; from_index4: int4; mask: uint4)

• gather_store_neq_mask (to: int4?; from: int const?; from_index4: int4; mask: int4)

15.3.7.1. gather_store_neq_mask

gather_store_neq_mask(to: int4?; from: int const?; from_index4: uint4; mask: int4)

Warning

This is unsafe operation.

Gather from source and store where mask differs, using a single value.

Arguments:

• to : int4? implicit

• from : int? implicit

• from_index4 : uint4

• mask : int4

gather_store_neq_mask(to: float4?; from: float const?; from_index4: uint4; mask: float4)

gather_store_neq_mask(to: float4?; from: float const?; from_index4: int4; mask: float4)

gather_store_neq_mask(to: uint4?; from: uint const?; from_index4: uint4; mask: uint4)

gather_store_neq_mask(to: uint4?; from: uint const?; from_index4: int4; mask: uint4)

gather_store_neq_mask(to: int4?; from: int const?; from_index4: int4; mask: int4)

15.3.8. Gather-store with stride

• gather_store_stride (to: int?; stride: int; from: int const?; from_index4: uint4)

• gather_store_stride (to: float?; stride: int; from: float const?; from_index4: uint4)

• gather_store_stride (to: float?; stride: int; from: float const?; from_index4: int4)

• gather_store_stride (to: uint?; stride: int; from: uint const?; from_index4: uint4)

• gather_store_stride (to: uint?; stride: int; from: uint const?; from_index4: int4)

• gather_store_stride (to: int?; stride: int; from: int const?; from_index4: int4)

15.3.8.1. gather_store_stride

gather_store_stride(to: int?; stride: int; from: int const?; from_index4: uint4)

Warning

This is unsafe operation.

Gather pixels with a stride offset between source elements.

Arguments:

• to : int? implicit

• stride : int

• from : int? implicit

• from_index4 : uint4

gather_store_stride(to: float?; stride: int; from: float const?; from_index4: uint4)

gather_store_stride(to: float?; stride: int; from: float const?; from_index4: int4)

gather_store_stride(to: uint?; stride: int; from: uint const?; from_index4: uint4)

gather_store_stride(to: uint?; stride: int; from: uint const?; from_index4: int4)

gather_store_stride(to: int?; stride: int; from: int const?; from_index4: int4)

15.3.9. Byte gather-store

• u8x4_gather_store (to: uint8?; from: uint8 const?; from_index4: int4)

• u8x4_gather_store (to: uint8?; from: uint8 const?; from_index4: uint4)

15.3.9.1. u8x4_gather_store

u8x4_gather_store(to: uint8?; from: uint8 const?; from_index4: int4)

Warning

This is unsafe operation.

Gather 4-byte pixels and store to sequential destination.

Arguments:

• to : uint8? implicit

• from : uint8? implicit

• from_index4 : int4

u8x4_gather_store(to: uint8?; from: uint8 const?; from_index4: uint4)

15.3.10. Copy reversed

• rast_copy_reversed_1 (dst: uint8?; src: uint8 const?; count: int)

• rast_copy_reversed_12 (dst: void?; src: void?; count: int)

• rast_copy_reversed_16 (dst: void?; src: void?; count: int)

• rast_copy_reversed_2 (dst: uint16?; src: uint16 const?; count: int)

• rast_copy_reversed_3 (dst: void?; src: void?; count: int)

• rast_copy_reversed_4 (dst: uint?; src: uint const?; count: int)

• rast_copy_reversed_6 (dst: void?; src: void?; count: int)

• rast_copy_reversed_8 (dst: uint64?; src: uint64 const?; count: int)

rast_copy_reversed_1(dst: uint8?; src: uint8 const?; count: int)

Warning

This is unsafe operation.

Copy pixel rows in reverse order (vertical flip) for 1-byte pixels.

Arguments:

• dst : uint8? implicit

• src : uint8? implicit

• count : int

rast_copy_reversed_12(dst: void?; src: void?; count: int)

Warning

This is unsafe operation.

Copy pixel rows in reverse order (vertical flip) for 12-byte pixels.

Arguments:

• dst : void? implicit

• src : void? implicit

• count : int

rast_copy_reversed_16(dst: void?; src: void?; count: int)

Warning

This is unsafe operation.

Copy pixel rows in reverse order (vertical flip) for 16-byte pixels.

Arguments:

• dst : void? implicit

• src : void? implicit

• count : int

rast_copy_reversed_2(dst: uint16?; src: uint16 const?; count: int)

Warning

This is unsafe operation.

Copy pixel rows in reverse order (vertical flip) for 2-byte pixels.

Arguments:

• dst : uint16? implicit

• src : uint16? implicit

• count : int

rast_copy_reversed_3(dst: void?; src: void?; count: int)

Warning

This is unsafe operation.

Copy pixel rows in reverse order (vertical flip) for 3-byte pixels.

Arguments:

• dst : void? implicit

• src : void? implicit

• count : int

rast_copy_reversed_4(dst: uint?; src: uint const?; count: int)

Warning

This is unsafe operation.

Copy pixel rows in reverse order (vertical flip) for 4-byte pixels.

Arguments:

• dst : uint? implicit

• src : uint? implicit

• count : int

rast_copy_reversed_6(dst: void?; src: void?; count: int)

Warning

This is unsafe operation.

Copy pixel rows in reverse order (vertical flip) for 6-byte pixels.

Arguments:

• dst : void? implicit

• src : void? implicit

• count : int

rast_copy_reversed_8(dst: uint64?; src: uint64 const?; count: int)

Warning

This is unsafe operation.

Copy pixel rows in reverse order (vertical flip) for 8-byte pixels.

Arguments:

• dst : uint64? implicit

• src : uint64? implicit

• count : int

15.3.11. Copy rect

• rast_copy_rect_1 (dst: uint8?; src: uint8 const?; dst_w: int; src_w: int; sx0: int; sy0: int; dx0: int; dy0: int; w: int; h: int)

• rast_copy_rect_12 (dst: void?; src: void?; dst_w: int; src_w: int; sx0: int; sy0: int; dx0: int; dy0: int; w: int; h: int)

• rast_copy_rect_16 (dst: void?; src: void?; dst_w: int; src_w: int; sx0: int; sy0: int; dx0: int; dy0: int; w: int; h: int)

• rast_copy_rect_2 (dst: uint16?; src: uint16 const?; dst_w: int; src_w: int; sx0: int; sy0: int; dx0: int; dy0: int; w: int; h: int)

• rast_copy_rect_3 (dst: void?; src: void?; dst_w: int; src_w: int; sx0: int; sy0: int; dx0: int; dy0: int; w: int; h: int)

• rast_copy_rect_4 (dst: uint?; src: uint const?; dst_w: int; src_w: int; sx0: int; sy0: int; dx0: int; dy0: int; w: int; h: int)

• rast_copy_rect_6 (dst: void?; src: void?; dst_w: int; src_w: int; sx0: int; sy0: int; dx0: int; dy0: int; w: int; h: int)

• rast_copy_rect_8 (dst: uint64?; src: uint64 const?; dst_w: int; src_w: int; sx0: int; sy0: int; dx0: int; dy0: int; w: int; h: int)

rast_copy_rect_1(dst: uint8?; src: uint8 const?; dst_w: int; src_w: int; sx0: int; sy0: int; dx0: int; dy0: int; w: int; h: int)

Warning

This is unsafe operation.

Copy a rectangular region between pixel buffers for 1-byte pixels.

Arguments:

• dst : uint8? implicit

• src : uint8? implicit

• dst_w : int

• src_w : int

• sx0 : int

• sy0 : int

• dx0 : int

• dy0 : int

• w : int

• h : int

rast_copy_rect_12(dst: void?; src: void?; dst_w: int; src_w: int; sx0: int; sy0: int; dx0: int; dy0: int; w: int; h: int)

Warning

This is unsafe operation.

Copy a rectangular region between pixel buffers for 12-byte pixels.

Arguments:

• dst : void? implicit

• src : void? implicit

• dst_w : int

• src_w : int

• sx0 : int

• sy0 : int

• dx0 : int

• dy0 : int

• w : int

• h : int

rast_copy_rect_16(dst: void?; src: void?; dst_w: int; src_w: int; sx0: int; sy0: int; dx0: int; dy0: int; w: int; h: int)

Warning

This is unsafe operation.

Copy a rectangular region between pixel buffers for 16-byte pixels.

Arguments:

• dst : void? implicit

• src : void? implicit

• dst_w : int

• src_w : int

• sx0 : int

• sy0 : int

• dx0 : int

• dy0 : int

• w : int

• h : int

rast_copy_rect_2(dst: uint16?; src: uint16 const?; dst_w: int; src_w: int; sx0: int; sy0: int; dx0: int; dy0: int; w: int; h: int)

Warning

This is unsafe operation.

Copy a rectangular region between pixel buffers for 2-byte pixels.

Arguments:

• dst : uint16? implicit

• src : uint16? implicit

• dst_w : int

• src_w : int

• sx0 : int

• sy0 : int

• dx0 : int

• dy0 : int

• w : int

• h : int

rast_copy_rect_3(dst: void?; src: void?; dst_w: int; src_w: int; sx0: int; sy0: int; dx0: int; dy0: int; w: int; h: int)

Warning

This is unsafe operation.

Copy a rectangular region between pixel buffers for 3-byte pixels.

Arguments:

• dst : void? implicit

• src : void? implicit

• dst_w : int

• src_w : int

• sx0 : int

• sy0 : int

• dx0 : int

• dy0 : int

• w : int

• h : int

rast_copy_rect_4(dst: uint?; src: uint const?; dst_w: int; src_w: int; sx0: int; sy0: int; dx0: int; dy0: int; w: int; h: int)

Warning

This is unsafe operation.

Copy a rectangular region between pixel buffers for 4-byte pixels.

Arguments:

• dst : uint? implicit

• src : uint? implicit

• dst_w : int

• src_w : int

• sx0 : int

• sy0 : int

• dx0 : int

• dy0 : int

• w : int

• h : int

rast_copy_rect_6(dst: void?; src: void?; dst_w: int; src_w: int; sx0: int; sy0: int; dx0: int; dy0: int; w: int; h: int)

Warning

This is unsafe operation.

Copy a rectangular region between pixel buffers for 6-byte pixels.

Arguments:

• dst : void? implicit

• src : void? implicit

• dst_w : int

• src_w : int

• sx0 : int

• sy0 : int

• dx0 : int

• dy0 : int

• w : int

• h : int

rast_copy_rect_8(dst: uint64?; src: uint64 const?; dst_w: int; src_w: int; sx0: int; sy0: int; dx0: int; dy0: int; w: int; h: int)

Warning

This is unsafe operation.

Copy a rectangular region between pixel buffers for 8-byte pixels.

Arguments:

• dst : uint64? implicit

• src : uint64? implicit

• dst_w : int

• src_w : int

• sx0 : int

• sy0 : int

• dx0 : int

• dy0 : int

• w : int

• h : int

15.3.12. Channel conversion

• rast_convert_channels_f32 (dst: float?; src: float const?; num_pixels: int; src_ch: int; dst_ch: int)

• rast_convert_channels_u16 (dst: uint16?; src: uint16 const?; num_pixels: int; src_ch: int; dst_ch: int)

• rast_convert_channels_u8 (dst: uint8?; src: uint8 const?; num_pixels: int; src_ch: int; dst_ch: int)

rast_convert_channels_f32(dst: float?; src: float const?; num_pixels: int; src_ch: int; dst_ch: int)

Warning

This is unsafe operation.

Convert between channel counts for float pixel data.

Arguments:

• dst : float? implicit

• src : float? implicit

• num_pixels : int

• src_ch : int

• dst_ch : int

rast_convert_channels_u16(dst: uint16?; src: uint16 const?; num_pixels: int; src_ch: int; dst_ch: int)

Warning

This is unsafe operation.

Convert between channel counts for uint16 pixel data.

Arguments:

• dst : uint16? implicit

• src : uint16? implicit

• num_pixels : int

• src_ch : int

• dst_ch : int

rast_convert_channels_u8(dst: uint8?; src: uint8 const?; num_pixels: int; src_ch: int; dst_ch: int)

Warning

This is unsafe operation.

Convert between channel counts for uint8 pixel data.

Arguments:

• dst : uint8? implicit

• src : uint8? implicit

• num_pixels : int

• src_ch : int

• dst_ch : int

15.3.13. BPC conversion

• rast_convert_f32_to_u16 (dst: uint16?; src: float const?; count: int)

• rast_convert_f32_to_u8 (dst: uint8?; src: float const?; count: int)

• rast_convert_u16_to_f32 (dst: float?; src: uint16 const?; count: int)

• rast_convert_u16_to_u8 (dst: uint8?; src: uint16 const?; count: int)

• rast_convert_u8_to_f32 (dst: float?; src: uint8 const?; count: int)

• rast_convert_u8_to_u16 (dst: uint16?; src: uint8 const?; count: int)

rast_convert_f32_to_u16(dst: uint16?; src: float const?; count: int)

Warning

This is unsafe operation.

Convert pixel data from float (0.0-1.0) to uint16 (0-65535) with clamping.

Arguments:

• dst : uint16? implicit

• src : float? implicit

• count : int

rast_convert_f32_to_u8(dst: uint8?; src: float const?; count: int)

Warning

This is unsafe operation.

Convert pixel data from float (0.0-1.0) to uint8 (0-255) with clamping.

Arguments:

• dst : uint8? implicit

• src : float? implicit

• count : int

rast_convert_u16_to_f32(dst: float?; src: uint16 const?; count: int)

Warning

This is unsafe operation.

Convert pixel data from uint16 (0-65535) to float (0.0-1.0).

Arguments:

• dst : float? implicit

• src : uint16? implicit

• count : int

rast_convert_u16_to_u8(dst: uint8?; src: uint16 const?; count: int)

Warning

This is unsafe operation.

Convert pixel data from uint16 (0-65535) to uint8 (0-255).

Arguments:

• dst : uint8? implicit

• src : uint16? implicit

• count : int

rast_convert_u8_to_f32(dst: float?; src: uint8 const?; count: int)

Warning

This is unsafe operation.

Convert pixel data from uint8 (0-255) to float (0.0-1.0).

Arguments:

• dst : float? implicit

• src : uint8? implicit

• count : int

rast_convert_u8_to_u16(dst: uint16?; src: uint8 const?; count: int)

Warning

This is unsafe operation.

Convert pixel data from uint8 (0-255) to uint16 (0-65535).

Arguments:

• dst : uint16? implicit

• src : uint8? implicit

• count : int

15.3.14. Span raster

• rast_hspan_masked_solid_u8 (solid: uint8; span: array<uint8>; spanOffset: int; tspan: array<uint8>; tspanOffset: int; uvY: float; dUVY: float; count: int)

• rast_hspan_masked_u8 (span: array<uint8>; spanOffset: int; tspan: array<uint8>; tspanOffset: int; uvY: float; dUVY: float; count: int)

• rast_hspan_u8 (span: array<uint8>; spanOffset: int; tspan: array<uint8>; tspanOffset: int; uvY: float; dUVY: float; count: int)

rast_hspan_masked_solid_u8(solid: uint8; span: array<uint8>; spanOffset: int; tspan: array<uint8>; tspanOffset: int; uvY: float; dUVY: float; count: int)

Rasterize a horizontal span of solid color with per-pixel mask.

Arguments:

• solid : uint8

• span : array<uint8> implicit

• spanOffset : int

• tspan : array<uint8> implicit

• tspanOffset : int

• uvY : float

• dUVY : float

• count : int

rast_hspan_masked_u8(span: array<uint8>; spanOffset: int; tspan: array<uint8>; tspanOffset: int; uvY: float; dUVY: float; count: int)

Rasterize a horizontal span with per-pixel mask.

Arguments:

• span : array<uint8> implicit

• spanOffset : int

• tspan : array<uint8> implicit

• tspanOffset : int

• uvY : float

• dUVY : float

• count : int

rast_hspan_u8(span: array<uint8>; spanOffset: int; tspan: array<uint8>; tspanOffset: int; uvY: float; dUVY: float; count: int)

Rasterize a horizontal span of uint8 pixels.

Arguments:

• span : array<uint8> implicit

• spanOffset : int

• tspan : array<uint8> implicit

• tspanOffset : int

• uvY : float

• dUVY : float

• count : int

15.3.15. Fill rect

• rast_fill_rect_1 (dst: uint8?; dst_w: int; dx: int; dy: int; w: int; h: int; val: uint8)

• rast_fill_rect_4 (dst: uint?; dst_w: int; dx: int; dy: int; w: int; h: int; val: uint)

rast_fill_rect_1(dst: uint8?; dst_w: int; dx: int; dy: int; w: int; h: int; val: uint8)

Warning

This is unsafe operation.

Fill a rectangle in a 1-channel uint8 image with a solid byte value. Operates on raw pixel data with row width, position, and dimensions.

Arguments:

• dst : uint8? implicit

• dst_w : int

• dx : int

• dy : int

• w : int

• h : int

• val : uint8

rast_fill_rect_4(dst: uint?; dst_w: int; dx: int; dy: int; w: int; h: int; val: uint)

Warning

This is unsafe operation.

Fill a rectangle in a 4-channel RGBA image with a packed uint32 color value. Operates on raw pixel data with row width, position, and dimensions.

Arguments:

• dst : uint? implicit

• dst_w : int

• dx : int

• dy : int

• w : int

• h : int

• val : uint

15.3.16. Alpha blit

• rast_blit_alpha (dst: uint8?; src: uint8 const?; dst_w: int; src_w: int; sx0: int; sy0: int; dx0: int; dy0: int; w: int; h: int; r: uint8; g: uint8; b: uint8)

rast_blit_alpha(dst: uint8?; src: uint8 const?; dst_w: int; src_w: int; sx0: int; sy0: int; dx0: int; dy0: int; w: int; h: int; r: uint8; g: uint8; b: uint8)

Warning

This is unsafe operation.

Alpha-blend a 1-channel source onto a 4-channel RGBA destination using SIMD. Each source pixel is the alpha value for blending the given (r,g,b) color. Uses exact integer division by 255.

Arguments:

• dst : uint8? implicit

• src : uint8? implicit

• dst_w : int

• src_w : int

• sx0 : int

• sy0 : int

• dx0 : int

• dy0 : int

• w : int

• h : int

• r : uint8

• g : uint8

• b : uint8