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impr: More permissive options for buffer writes along with sliced writes#2279

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reczkok wants to merge 3 commits intomainfrom
impr/allow-buffer-write-encoder
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impr: More permissive options for buffer writes along with sliced writes#2279
reczkok wants to merge 3 commits intomainfrom
impr/allow-buffer-write-encoder

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@reczkok reczkok commented Mar 11, 2026 •
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Introduce InferInput and $inRepr to accept plain arrays and TypedArrays for vector/array write-side representations. Add BufferWriteOptions (startOffset/endOffset) and improve memoryLayoutOf accessor errors. Update compiled/data writers to index into array-like vector inputs and adjust tests and docs accordingly

@reczkok
Allow permissive vector inputs and buffer slices
a0c2e6a 
Introduce InferInput and $inRepr to accept plain arrays and TypedArrays
for vector/array write-side representations. Add BufferWriteOptions
(startOffset/endOffset) and improve memoryLayoutOf accessor errors.
Update compiled/data writers to index into array-like vector inputs and
adjust tests and docs accordingly
@reczkok reczkok requested a review from Copilot March 11, 2026 17:39
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pkg.pr.new

packages
Ready to be installed by your favorite package manager ⬇️

https://pkg.pr.new/software-mansion/TypeGPU/typegpu@c11260388c08671ae3f43706f7308b723a151332

https://pkg.pr.new/software-mansion/TypeGPU/@typegpu/noise@c11260388c08671ae3f43706f7308b723a151332

https://pkg.pr.new/software-mansion/TypeGPU/unplugin-typegpu@c11260388c08671ae3f43706f7308b723a151332

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📊 Bundle Size Comparison

🟢 Decreased ➖ Unchanged 🔴 Increased ❔ Unknown
0 15 330 0

👀 Notable results

Static test results:

Test tsdown
importEntireLibrary.ts 270.98 kB ($${\color{red}+0.8\%}$$)
tgpuImportEverything.ts 244.37 kB ($${\color{red}+0.9\%}$$)
tgpuImportOne.ts 244.38 kB ($${\color{red}+0.9\%}$$)

Dynamic test results:

‼️ Click to reveal the results table (63 entries).
Test tsdown
MissingBindGroupsError from typegpu.ts 1.31 kB ($${\color{red}+2.4\%}$$)
MissingVertexBuffersError from typegpu.ts 1.32 kB ($${\color{red}+2.4\%}$$)
NotUniformError from typegpu.ts 1.27 kB ($${\color{red}+2.4\%}$$)
ResolutionError from typegpu.ts 1.51 kB ($${\color{red}+2.0\%}$$)
Void from typegpudata.ts 700 B ($${\color{red}+4.6\%}$$)
atomic from typegpudata.ts 739 B ($${\color{red}+4.4\%}$$)
comparisonSampler from typegpudata.ts 719 B ($${\color{red}+4.5\%}$$)
deepEqual from typegpudata.ts 2.74 kB ($${\color{red}+1.1\%}$$)
isAlignAttrib from typegpudata.ts 721 B ($${\color{red}+4.5\%}$$)
isAtomic from typegpudata.ts 721 B ($${\color{red}+4.5\%}$$)
isBufferShorthand from typegpu.ts 1.73 kB ($${\color{red}+2.0\%}$$)
isBuffer from typegpu.ts 87.61 kB ($${\color{red}+1.5\%}$$)
isBuiltinAttrib from typegpudata.ts 723 B ($${\color{red}+4.5\%}$$)
isData from typegpudata.ts 2.35 kB ($${\color{red}+1.3\%}$$)
isDecorated from typegpudata.ts 724 B ($${\color{red}+4.5\%}$$)
isDisarray from typegpudata.ts 1.66 kB ($${\color{red}+1.9\%}$$)
isInterpolateAttrib from typegpudata.ts 727 B ($${\color{red}+4.5\%}$$)
isLocationAttrib from typegpudata.ts 724 B ($${\color{red}+4.5\%}$$)
isLooseData from typegpudata.ts 1.70 kB ($${\color{red}+1.8\%}$$)
isLooseDecorated from typegpudata.ts 1.67 kB ($${\color{red}+1.9\%}$$)
isPtr from typegpudata.ts 718 B ($${\color{red}+4.5\%}$$)
isSizeAttrib from typegpudata.ts 720 B ($${\color{red}+4.5\%}$$)
isTgpuFn from typegpu.ts 731 B ($${\color{red}+4.4\%}$$)
isUnstruct from typegpudata.ts 1.66 kB ($${\color{red}+1.9\%}$$)
isUsableAsVertex from typegpu.ts 87.60 kB ($${\color{red}+1.5\%}$$)
isWgslArray from typegpudata.ts 720 B ($${\color{red}+4.5\%}$$)
isWgslData from typegpudata.ts 1.28 kB ($${\color{red}+2.4\%}$$)
isWgslStruct from typegpudata.ts 721 B ($${\color{red}+4.5\%}$$)
ptrFn from typegpudata.ts 825 B ($${\color{red}+3.9\%}$$)
ptrHandle from typegpudata.ts 817 B ($${\color{red}+3.9\%}$$)
ptrPrivate from typegpudata.ts 824 B ($${\color{red}+3.9\%}$$)
ptrStorage from typegpudata.ts 822 B ($${\color{red}+3.9\%}$$)
ptrUniform from typegpudata.ts 818 B ($${\color{red}+3.9\%}$$)
ptrWorkgroup from typegpudata.ts 826 B ($${\color{red}+3.9\%}$$)
ref from typegpudata.ts 4.12 kB ($${\color{red}+0.7\%}$$)
sampler from typegpudata.ts 708 B ($${\color{red}+4.6\%}$$)
struct from typegpudata.ts 3.34 kB ($${\color{red}+0.9\%}$$)
textureExternal from typegpudata.ts 839 B ($${\color{red}+3.8\%}$$)
textureStorage1d from typegpudata.ts 1003 B ($${\color{red}+3.2\%}$$)
textureStorage2dArray from typegpudata.ts 1021 B ($${\color{red}+3.1\%}$$)
textureStorage2d from typegpudata.ts 1003 B ($${\color{red}+3.2\%}$$)
textureStorage3d from typegpudata.ts 1003 B ($${\color{red}+3.2\%}$$)
tgpu.accessor from typegpu.ts 244.38 kB ($${\color{red}+0.9\%}$$)
tgpu.bindGroupLayout from typegpu.ts 244.38 kB ($${\color{red}+0.9\%}$$)
tgpu.comptime from typegpu.ts 244.38 kB ($${\color{red}+0.9\%}$$)
tgpu.computeFn from typegpu.ts 244.38 kB ($${\color{red}+0.9\%}$$)
tgpu.const from typegpu.ts 244.37 kB ($${\color{red}+0.9\%}$$)
tgpu.fn from typegpu.ts 244.37 kB ($${\color{red}+0.9\%}$$)
tgpu.fragmentFn from typegpu.ts 244.38 kB ($${\color{red}+0.9\%}$$)
tgpu.initFromDevice from typegpu.ts 244.38 kB ($${\color{red}+0.9\%}$$)
tgpu.init from typegpu.ts 244.37 kB ($${\color{red}+0.9\%}$$)
tgpu.lazy from typegpu.ts 244.37 kB ($${\color{red}+0.9\%}$$)
tgpu.mutableAccessor from typegpu.ts 244.38 kB ($${\color{red}+0.9\%}$$)
tgpu.privateVar from typegpu.ts 244.38 kB ($${\color{red}+0.9\%}$$)
tgpu.resolveWithContext from typegpu.ts 244.38 kB ($${\color{red}+0.9\%}$$)
tgpu.resolve from typegpu.ts 244.37 kB ($${\color{red}+0.9\%}$$)
tgpu.slot from typegpu.ts 244.37 kB ($${\color{red}+0.9\%}$$)
tgpu.unroll from typegpu.ts 244.37 kB ($${\color{red}+0.9\%}$$)
tgpu.vertexFn from typegpu.ts 244.38 kB ($${\color{red}+0.9\%}$$)
tgpu.vertexLayout from typegpu.ts 244.38 kB ($${\color{red}+0.9\%}$$)
tgpu.workgroupVar from typegpu.ts 244.38 kB ($${\color{red}+0.9\%}$$)
tgpu from typegpu.ts 244.37 kB ($${\color{red}+0.9\%}$$)
unstruct from typegpudata.ts 1.61 kB ($${\color{red}+1.9\%}$$)

📋 All results

Click to reveal the results table (344 entries).
Test tsdown
dataImportEverything.ts 84.69 kB ($${\color{red}+0.1\%}$$)
dataImportOneDirect.ts 22.06 kB ($${\color{red}+0.1\%}$$)
dataImportOneStar.ts 22.06 kB ($${\color{red}+0.1\%}$$)
functionWithUseGpu.ts 282 B (➖)
functionWithoutUseGpu.ts 24 B (➖)
importEntireLibrary.ts 270.98 kB ($${\color{red}+0.8\%}$$)
stdImportEverything.ts 98.93 kB ($${\color{red}+0.0\%}$$)
stdImportOneDirect.ts 44.03 kB ($${\color{red}+0.1\%}$$)
stdImportOneStar.ts 44.03 kB ($${\color{red}+0.1\%}$$)
tgpuImportEverything.ts 244.37 kB ($${\color{red}+0.9\%}$$)
tgpuImportOne.ts 244.38 kB ($${\color{red}+0.9\%}$$)
MissingBindGroupsError from typegpu.ts 1.31 kB ($${\color{red}+2.4\%}$$)
MissingLinksError from typegpu.ts 201 B (➖)
MissingSlotValueError from typegpu.ts 146 B (➖)
MissingVertexBuffersError from typegpu.ts 1.32 kB ($${\color{red}+2.4\%}$$)
NotUniformError from typegpu.ts 1.27 kB ($${\color{red}+2.4\%}$$)
ResolutionError from typegpu.ts 1.51 kB ($${\color{red}+2.0\%}$$)
Void from typegpudata.ts 700 B ($${\color{red}+4.6\%}$$)
abs from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
acos from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
acosh from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
add from typegpustd.ts 44.02 kB ($${\color{red}+0.1\%}$$)
align from typegpudata.ts 23.73 kB ($${\color{red}+0.1\%}$$)
alignmentOf from typegpudata.ts 19.28 kB ($${\color{red}+0.2\%}$$)
allEq from typegpustd.ts 46.55 kB ($${\color{red}+0.1\%}$$)
all from typegpustd.ts 46.55 kB ($${\color{red}+0.1\%}$$)
and from typegpustd.ts 46.54 kB ($${\color{red}+0.1\%}$$)
any from typegpustd.ts 46.55 kB ($${\color{red}+0.1\%}$$)
arrayLength from typegpustd.ts 12.16 kB ($${\color{red}+0.2\%}$$)
arrayOf from typegpudata.ts 23.94 kB ($${\color{red}+0.1\%}$$)
asin from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
asinh from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
atan2 from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
atan from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
atanh from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
atomicAdd from typegpustd.ts 13.54 kB ($${\color{red}+0.2\%}$$)
atomicAnd from typegpustd.ts 13.54 kB ($${\color{red}+0.2\%}$$)
atomicLoad from typegpustd.ts 13.52 kB ($${\color{red}+0.2\%}$$)
atomicMax from typegpustd.ts 13.54 kB ($${\color{red}+0.2\%}$$)
atomicMin from typegpustd.ts 13.54 kB ($${\color{red}+0.2\%}$$)
atomicOr from typegpustd.ts 13.54 kB ($${\color{red}+0.2\%}$$)
atomicStore from typegpustd.ts 13.53 kB ($${\color{red}+0.2\%}$$)
atomicSub from typegpustd.ts 13.54 kB ($${\color{red}+0.2\%}$$)
atomicXor from typegpustd.ts 13.54 kB ($${\color{red}+0.2\%}$$)
atomic from typegpudata.ts 739 B ($${\color{red}+4.4\%}$$)
bitcastU32toF32 from typegpustd.ts 41.42 kB ($${\color{red}+0.1\%}$$)
bitcastU32toI32 from typegpustd.ts 41.43 kB ($${\color{red}+0.1\%}$$)
bool from typegpudata.ts 10.72 kB ($${\color{red}+0.3\%}$$)
builtin from typegpudata.ts 26.29 kB ($${\color{red}+0.1\%}$$)
ceil from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
clamp from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
common from typegpu.ts 36.34 kB ($${\color{red}+0.1\%}$$)
comparisonSampler from typegpudata.ts 719 B ($${\color{red}+4.5\%}$$)
cos from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
cosh from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
countLeadingZeros from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
countOneBits from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
countTrailingZeros from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
cross from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
d from typegpu.ts 82.40 kB ($${\color{red}+0.1\%}$$)
deepEqual from typegpudata.ts 2.74 kB ($${\color{red}+1.1\%}$$)
degrees from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
determinant from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
disarrayOf from typegpudata.ts 12.67 kB ($${\color{red}+0.2\%}$$)
discard from typegpustd.ts 11.92 kB ($${\color{red}+0.3\%}$$)
distance from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
div from typegpustd.ts 44.02 kB ($${\color{red}+0.1\%}$$)
dot4I8Packed from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
dot4U8Packed from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
dot from typegpustd.ts 61.32 kB ($${\color{red}+0.0\%}$$)
dpdxCoarse from typegpustd.ts 12.77 kB ($${\color{red}+0.2\%}$$)
dpdxFine from typegpustd.ts 12.77 kB ($${\color{red}+0.2\%}$$)
dpdx from typegpustd.ts 12.77 kB ($${\color{red}+0.2\%}$$)
dpdyCoarse from typegpustd.ts 12.77 kB ($${\color{red}+0.2\%}$$)
dpdyFine from typegpustd.ts 12.77 kB ($${\color{red}+0.2\%}$$)
dpdy from typegpustd.ts 12.77 kB ($${\color{red}+0.2\%}$$)
eq from typegpustd.ts 46.55 kB ($${\color{red}+0.1\%}$$)
exp2 from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
exp from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
extensionEnabled from typegpustd.ts 12.24 kB ($${\color{red}+0.2\%}$$)
extractBits from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
f16 from typegpudata.ts 10.72 kB ($${\color{red}+0.3\%}$$)
f32 from typegpudata.ts 10.72 kB ($${\color{red}+0.3\%}$$)
faceForward from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
firstLeadingBit from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
firstTrailingBit from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
float16 from typegpudata.ts 18.24 kB ($${\color{red}+0.2\%}$$)
float16x2 from typegpudata.ts 18.24 kB ($${\color{red}+0.2\%}$$)
float16x4 from typegpudata.ts 18.24 kB ($${\color{red}+0.2\%}$$)
float32 from typegpudata.ts 18.24 kB ($${\color{red}+0.2\%}$$)
float32x2 from typegpudata.ts 18.24 kB ($${\color{red}+0.2\%}$$)
float32x3 from typegpudata.ts 18.24 kB ($${\color{red}+0.2\%}$$)
float32x4 from typegpudata.ts 18.24 kB ($${\color{red}+0.2\%}$$)
floor from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
fma from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
formatToWGSLType from typegpudata.ts 18.24 kB ($${\color{red}+0.2\%}$$)
fract from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
frexp from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
fwidthCoarse from typegpustd.ts 12.77 kB ($${\color{red}+0.2\%}$$)
fwidthFine from typegpustd.ts 12.77 kB ($${\color{red}+0.2\%}$$)
fwidth from typegpustd.ts 12.77 kB ($${\color{red}+0.2\%}$$)
ge from typegpustd.ts 46.55 kB ($${\color{red}+0.1\%}$$)
getLongestContiguousPrefix from typegpudata.ts 22.08 kB ($${\color{red}+0.1\%}$$)
gt from typegpustd.ts 46.55 kB ($${\color{red}+0.1\%}$$)
i32 from typegpudata.ts 10.72 kB ($${\color{red}+0.3\%}$$)
identity2 from typegpustd.ts 24.66 kB ($${\color{red}+0.1\%}$$)
identity3 from typegpustd.ts 24.66 kB ($${\color{red}+0.1\%}$$)
identity4 from typegpustd.ts 24.66 kB ($${\color{red}+0.1\%}$$)
insertBits from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
interpolate from typegpudata.ts 23.74 kB ($${\color{red}+0.1\%}$$)
invariant from typegpudata.ts 24.11 kB ($${\color{red}+0.1\%}$$)
inverseSqrt from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
isAccessor from typegpu.ts 65 B (➖)
isAlignAttrib from typegpudata.ts 721 B ($${\color{red}+4.5\%}$$)
isAtomic from typegpudata.ts 721 B ($${\color{red}+4.5\%}$$)
isBufferShorthand from typegpu.ts 1.73 kB ($${\color{red}+2.0\%}$$)
isBuffer from typegpu.ts 87.61 kB ($${\color{red}+1.5\%}$$)
isBuiltinAttrib from typegpudata.ts 723 B ($${\color{red}+4.5\%}$$)
isBuiltin from typegpudata.ts 22.01 kB ($${\color{red}+0.1\%}$$)
isCloseTo from typegpustd.ts 46.55 kB ($${\color{red}+0.1\%}$$)
isComparisonSampler from typegpu.ts 57.81 kB ($${\color{red}+0.1\%}$$)
isContiguous from typegpudata.ts 22.07 kB ($${\color{red}+0.1\%}$$)
isData from typegpudata.ts 2.35 kB ($${\color{red}+1.3\%}$$)
isDecorated from typegpudata.ts 724 B ($${\color{red}+4.5\%}$$)
isDisarray from typegpudata.ts 1.66 kB ($${\color{red}+1.9\%}$$)
isInterpolateAttrib from typegpudata.ts 727 B ($${\color{red}+4.5\%}$$)
isLazy from typegpu.ts 61 B (➖)
isLocationAttrib from typegpudata.ts 724 B ($${\color{red}+4.5\%}$$)
isLooseData from typegpudata.ts 1.70 kB ($${\color{red}+1.8\%}$$)
isLooseDecorated from typegpudata.ts 1.67 kB ($${\color{red}+1.9\%}$$)
isMutableAccessor from typegpu.ts 73 B (➖)
isPackedData from typegpudata.ts 18.31 kB ($${\color{red}+0.2\%}$$)
isPtr from typegpudata.ts 718 B ($${\color{red}+4.5\%}$$)
isSampler from typegpu.ts 57.79 kB ($${\color{red}+0.1\%}$$)
isSizeAttrib from typegpudata.ts 720 B ($${\color{red}+4.5\%}$$)
isSlot from typegpu.ts 61 B (➖)
isTexture from typegpu.ts 57.79 kB ($${\color{red}+0.1\%}$$)
isTgpuComputeFn from typegpu.ts 69 B (➖)
isTgpuFn from typegpu.ts 731 B ($${\color{red}+4.4\%}$$)
isTgpuFragmentFn from typegpu.ts 70 B (➖)
isTgpuVertexFn from typegpu.ts 68 B (➖)
isUnstruct from typegpudata.ts 1.66 kB ($${\color{red}+1.9\%}$$)
isUsableAsRender from typegpu.ts 55 B (➖)
isUsableAsSampled from typegpu.ts 56 B (➖)
isUsableAsStorage from typegpu.ts 56 B (➖)
isUsableAsUniform from typegpu.ts 57.78 kB ($${\color{red}+0.1\%}$$)
isUsableAsVertex from typegpu.ts 87.60 kB ($${\color{red}+1.5\%}$$)
isVariable from typegpu.ts 59.58 kB ($${\color{red}+0.1\%}$$)
isWgslArray from typegpudata.ts 720 B ($${\color{red}+4.5\%}$$)
isWgslData from typegpudata.ts 1.28 kB ($${\color{red}+2.4\%}$$)
isWgslStruct from typegpudata.ts 721 B ($${\color{red}+4.5\%}$$)
ldexp from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
le from typegpustd.ts 46.55 kB ($${\color{red}+0.1\%}$$)
length from typegpustd.ts 61.32 kB ($${\color{red}+0.0\%}$$)
location from typegpudata.ts 23.74 kB ($${\color{red}+0.1\%}$$)
log2 from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
log from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
lt from typegpustd.ts 46.55 kB ($${\color{red}+0.1\%}$$)
mat2x2f from typegpudata.ts 24.66 kB ($${\color{red}+0.1\%}$$)
mat3x3f from typegpudata.ts 24.66 kB ($${\color{red}+0.1\%}$$)
mat4x4f from typegpudata.ts 24.66 kB ($${\color{red}+0.1\%}$$)
matToArray from typegpudata.ts 24.79 kB ($${\color{red}+0.1\%}$$)
max from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
memoryLayoutOf from typegpudata.ts 39.36 kB ($${\color{red}+0.3\%}$$)
min from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
mix from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
mod from typegpustd.ts 44.02 kB ($${\color{red}+0.1\%}$$)
modf from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
mul from typegpustd.ts 44.02 kB ($${\color{red}+0.1\%}$$)
ne from typegpustd.ts 46.55 kB ($${\color{red}+0.1\%}$$)
neg from typegpustd.ts 44.02 kB ($${\color{red}+0.1\%}$$)
normalize from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
not from typegpustd.ts 46.54 kB ($${\color{red}+0.1\%}$$)
or from typegpustd.ts 46.54 kB ($${\color{red}+0.1\%}$$)
pack2x16float from typegpustd.ts 33.26 kB ($${\color{red}+0.1\%}$$)
pack4x8unorm from typegpustd.ts 33.26 kB ($${\color{red}+0.1\%}$$)
packedFormats from typegpudata.ts 18.26 kB ($${\color{red}+0.2\%}$$)
pow from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
ptrFn from typegpudata.ts 825 B ($${\color{red}+3.9\%}$$)
ptrHandle from typegpudata.ts 817 B ($${\color{red}+3.9\%}$$)
ptrPrivate from typegpudata.ts 824 B ($${\color{red}+3.9\%}$$)
ptrStorage from typegpudata.ts 822 B ($${\color{red}+3.9\%}$$)
ptrUniform from typegpudata.ts 818 B ($${\color{red}+3.9\%}$$)
ptrWorkgroup from typegpudata.ts 826 B ($${\color{red}+3.9\%}$$)
quantizeToF16 from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
radians from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
ref from typegpudata.ts 4.12 kB ($${\color{red}+0.7\%}$$)
reflect from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
refract from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
reverseBits from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
rotateX4 from typegpustd.ts 44.78 kB ($${\color{red}+0.1\%}$$)
rotateY4 from typegpustd.ts 44.79 kB ($${\color{red}+0.1\%}$$)
rotateZ4 from typegpustd.ts 44.79 kB ($${\color{red}+0.1\%}$$)
rotationX4 from typegpustd.ts 24.66 kB ($${\color{red}+0.1\%}$$)
rotationY4 from typegpustd.ts 24.66 kB ($${\color{red}+0.1\%}$$)
rotationZ4 from typegpustd.ts 24.66 kB ($${\color{red}+0.1\%}$$)
round from typegpustd.ts 61.33 kB ($${\color{red}+0.0\%}$$)
sampler from typegpudata.ts 708 B ($${\color{red}+4.6\%}$$)
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@reczkok
Validate buffer write offsets and update docs
ac08d32 
Add runtime validation for write offsets in TgpuBuffer.write:
startOffset must be a non-negative integer; endOffset must be
>= startOffset and <= buffer size. Forward BufferWriteOptions through
 the buffer shorthand write API and add unit tests for the new checks.
 Clarify docs about TypeGPU wrapper allocation and byte-based endOffset
 behavior (partial-element writes).
Copilot AI reviewed Mar 11, 2026
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Pull request overview

This PR expands TypeGPU’s buffer write API to support more permissive “write-side” input representations (tuples/TypedArrays), adds slice-based writes via byte offsets, and improves memoryLayoutOf accessor error reporting. It also updates compiled and non-compiled writer generation plus associated tests/docs to reflect these new capabilities.

Changes:

  • Add InferInput / $inRepr to widen write-side types for vectors and arrayOf(...) (including accepting flat TypedArrays for vector arrays).
  • Add BufferWriteOptions (startOffset / endOffset) to TgpuBuffer.write() for slice writes and update tests/docs accordingly.
  • Improve memoryLayoutOf accessor typing/error messaging and update callsites/tests.

Reviewed changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 6 comments.

Show a summary per file
File Description
packages/typegpu/tests/offsetUtils.test.ts Update memoryLayoutOf accessors to match new typing (no as number).
packages/typegpu/tests/computePipeline.test.ts Adjust memoryLayoutOf accessors used for indirect dispatch warnings.
packages/typegpu/tests/compiledIO.test.ts Update writer snapshots for array-like vector inputs, add partial-mode writer tests, add InferInput-related tests.
packages/typegpu/tests/buffer.test.ts Add tests for slice writes and InferInput acceptance (tuples/TypedArrays).
packages/typegpu/src/shared/symbols.ts Introduce $inRepr type token.
packages/typegpu/src/shared/repr.ts Add InferInput type (falls back to Infer).
packages/typegpu/src/data/wgslTypes.ts Define $inRepr for Vec* and WgslArray to accept tuples/TypedArrays.
packages/typegpu/src/data/offsetUtils.ts Relax accessor return type and improve memoryLayoutOf error message.
packages/typegpu/src/data/index.ts Export InferInput from the public data barrel.
packages/typegpu/src/data/dataIO.ts Switch vector writers to index-based access (value[0], etc.).
packages/typegpu/src/data/compiledIO.ts Extend compiled writers for InferInput + slice writes (endOffset) and add vector-array TypedArray fast path.
packages/typegpu/src/core/buffer/bufferShorthand.ts Update shorthand write typing to InferInput.
packages/typegpu/src/core/buffer/buffer.ts Add BufferWriteOptions and implement offset-based writes using compiled writer endOffset.
apps/typegpu-docs/src/content/docs/fundamentals/buffers.mdx Document permissive vector inputs and slice-writing via offsets.

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@reczkok
Fix vector component byte offsets in writers
c112603 
Use actual primitive/component size when generating compiled writers
instead of assuming 4-byte components. Add a runtime guard in the
buffer implementation to reject flat TypedArray inputs for arrays of
vectors when the compiled writer is unavailable (e.g. no-eval
environments), and add tests covering float16 vec writers and array
stride/offset behavior.
@reczkok reczkok marked this pull request as ready for review March 13, 2026 17:01
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@reczkok