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impr: More capable and performant write API#2279

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reczkok wants to merge 16 commits intomainfrom
impr/allow-buffer-write-encoder
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impr: More capable and performant write API#2279
reczkok wants to merge 16 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 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@e51409a9f4f14e16664240328b88e1034e412872

https://pkg.pr.new/software-mansion/TypeGPU/@typegpu/noise@e51409a9f4f14e16664240328b88e1034e412872

https://pkg.pr.new/software-mansion/TypeGPU/unplugin-typegpu@e51409a9f4f14e16664240328b88e1034e412872

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📊 Bundle Size Comparison

🟢 Decreased ➖ Unchanged 🔴 Increased ❔ Unknown
2 15 332 0

👀 Notable results

Static test results:

Test tsdown
tgpuImportEverything.ts 246.17 kB ($${\color{red}+0.7\%}$$)
tgpuImportOne.ts 246.18 kB ($${\color{red}+0.7\%}$$)
importEntireLibrary.ts 273.00 kB ($${\color{red}+0.6\%}$$)

Dynamic test results:

‼️ Click to reveal the results table (64 entries).
Test tsdown
Void from typegpudata.ts 700 B ($${\color{red}+4.6\%}$$)
sampler from typegpudata.ts 708 B ($${\color{red}+4.6\%}$$)
isPtr from typegpudata.ts 718 B ($${\color{red}+4.5\%}$$)
comparisonSampler from typegpudata.ts 719 B ($${\color{red}+4.5\%}$$)
isSizeAttrib from typegpudata.ts 720 B ($${\color{red}+4.5\%}$$)
isWgslArray from typegpudata.ts 720 B ($${\color{red}+4.5\%}$$)
isAlignAttrib from typegpudata.ts 721 B ($${\color{red}+4.5\%}$$)
isAtomic from typegpudata.ts 721 B ($${\color{red}+4.5\%}$$)
isWgslStruct from typegpudata.ts 721 B ($${\color{red}+4.5\%}$$)
isBuiltinAttrib from typegpudata.ts 723 B ($${\color{red}+4.5\%}$$)
isDecorated from typegpudata.ts 724 B ($${\color{red}+4.5\%}$$)
isLocationAttrib from typegpudata.ts 724 B ($${\color{red}+4.5\%}$$)
isInterpolateAttrib from typegpudata.ts 727 B ($${\color{red}+4.5\%}$$)
isTgpuFn from typegpu.ts 731 B ($${\color{red}+4.4\%}$$)
atomic from typegpudata.ts 739 B ($${\color{red}+4.4\%}$$)
ptrHandle from typegpudata.ts 817 B ($${\color{red}+3.9\%}$$)
ptrUniform from typegpudata.ts 818 B ($${\color{red}+3.9\%}$$)
ptrStorage from typegpudata.ts 822 B ($${\color{red}+3.9\%}$$)
ptrPrivate from typegpudata.ts 824 B ($${\color{red}+3.9\%}$$)
ptrFn from typegpudata.ts 825 B ($${\color{red}+3.9\%}$$)
ptrWorkgroup from typegpudata.ts 826 B ($${\color{red}+3.9\%}$$)
textureExternal from typegpudata.ts 839 B ($${\color{red}+3.8\%}$$)
isUsableAsVertex from typegpu.ts 84.93 kB ($${\color{green}-3.7\%}$$)
isBuffer from typegpu.ts 84.93 kB ($${\color{green}-3.7\%}$$)
textureStorage1d from typegpudata.ts 1003 B ($${\color{red}+3.2\%}$$)
textureStorage2d from typegpudata.ts 1003 B ($${\color{red}+3.2\%}$$)
textureStorage3d from typegpudata.ts 1003 B ($${\color{red}+3.2\%}$$)
textureStorage2dArray from typegpudata.ts 1021 B ($${\color{red}+3.1\%}$$)
NotUniformError from typegpu.ts 1.27 kB ($${\color{red}+2.4\%}$$)
isWgslData from typegpudata.ts 1.28 kB ($${\color{red}+2.4\%}$$)
MissingBindGroupsError from typegpu.ts 1.31 kB ($${\color{red}+2.4\%}$$)
MissingVertexBuffersError from typegpu.ts 1.32 kB ($${\color{red}+2.4\%}$$)
ResolutionError from typegpu.ts 1.51 kB ($${\color{red}+2.0\%}$$)
isBufferShorthand from typegpu.ts 1.73 kB ($${\color{red}+2.0\%}$$)
unstruct from typegpudata.ts 1.61 kB ($${\color{red}+1.9\%}$$)
isDisarray from typegpudata.ts 1.66 kB ($${\color{red}+1.9\%}$$)
isUnstruct from typegpudata.ts 1.66 kB ($${\color{red}+1.9\%}$$)
isLooseDecorated from typegpudata.ts 1.67 kB ($${\color{red}+1.9\%}$$)
isLooseData from typegpudata.ts 1.70 kB ($${\color{red}+1.8\%}$$)
ShaderGenerator from typegpu.ts 1.80 kB ($${\color{red}+1.7\%}$$)
isData from typegpudata.ts 2.35 kB ($${\color{red}+1.3\%}$$)
deepEqual from typegpudata.ts 2.74 kB ($${\color{red}+1.1\%}$$)
struct from typegpudata.ts 3.34 kB ($${\color{red}+0.9\%}$$)
ref from typegpudata.ts 4.12 kB ($${\color{red}+0.7\%}$$)
tgpu from typegpu.ts 246.17 kB ($${\color{red}+0.7\%}$$)
tgpu.fn from typegpu.ts 246.17 kB ($${\color{red}+0.7\%}$$)
tgpu.init from typegpu.ts 246.17 kB ($${\color{red}+0.7\%}$$)
tgpu.lazy from typegpu.ts 246.17 kB ($${\color{red}+0.7\%}$$)
tgpu.slot from typegpu.ts 246.17 kB ($${\color{red}+0.7\%}$$)
tgpu.const from typegpu.ts 246.17 kB ($${\color{red}+0.7\%}$$)
tgpu.unroll from typegpu.ts 246.17 kB ($${\color{red}+0.7\%}$$)
tgpu.resolve from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.accessor from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.comptime from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.vertexFn from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.computeFn from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.fragmentFn from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.privateVar from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.vertexLayout from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.workgroupVar from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.initFromDevice from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.bindGroupLayout from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.mutableAccessor from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.resolveWithContext from typegpu.ts 246.19 kB ($${\color{red}+0.7\%}$$)

📋 All results

Click to reveal the results table (348 entries).
Test tsdown
Void from typegpudata.ts 700 B ($${\color{red}+4.6\%}$$)
sampler from typegpudata.ts 708 B ($${\color{red}+4.6\%}$$)
isPtr from typegpudata.ts 718 B ($${\color{red}+4.5\%}$$)
comparisonSampler from typegpudata.ts 719 B ($${\color{red}+4.5\%}$$)
isSizeAttrib from typegpudata.ts 720 B ($${\color{red}+4.5\%}$$)
isWgslArray from typegpudata.ts 720 B ($${\color{red}+4.5\%}$$)
isAlignAttrib from typegpudata.ts 721 B ($${\color{red}+4.5\%}$$)
isAtomic from typegpudata.ts 721 B ($${\color{red}+4.5\%}$$)
isWgslStruct from typegpudata.ts 721 B ($${\color{red}+4.5\%}$$)
isBuiltinAttrib from typegpudata.ts 723 B ($${\color{red}+4.5\%}$$)
isDecorated from typegpudata.ts 724 B ($${\color{red}+4.5\%}$$)
isLocationAttrib from typegpudata.ts 724 B ($${\color{red}+4.5\%}$$)
isInterpolateAttrib from typegpudata.ts 727 B ($${\color{red}+4.5\%}$$)
isTgpuFn from typegpu.ts 731 B ($${\color{red}+4.4\%}$$)
atomic from typegpudata.ts 739 B ($${\color{red}+4.4\%}$$)
ptrHandle from typegpudata.ts 817 B ($${\color{red}+3.9\%}$$)
ptrUniform from typegpudata.ts 818 B ($${\color{red}+3.9\%}$$)
ptrStorage from typegpudata.ts 822 B ($${\color{red}+3.9\%}$$)
ptrPrivate from typegpudata.ts 824 B ($${\color{red}+3.9\%}$$)
ptrFn from typegpudata.ts 825 B ($${\color{red}+3.9\%}$$)
ptrWorkgroup from typegpudata.ts 826 B ($${\color{red}+3.9\%}$$)
textureExternal from typegpudata.ts 839 B ($${\color{red}+3.8\%}$$)
isUsableAsVertex from typegpu.ts 84.93 kB ($${\color{green}-3.7\%}$$)
isBuffer from typegpu.ts 84.93 kB ($${\color{green}-3.7\%}$$)
textureStorage1d from typegpudata.ts 1003 B ($${\color{red}+3.2\%}$$)
textureStorage2d from typegpudata.ts 1003 B ($${\color{red}+3.2\%}$$)
textureStorage3d from typegpudata.ts 1003 B ($${\color{red}+3.2\%}$$)
textureStorage2dArray from typegpudata.ts 1021 B ($${\color{red}+3.1\%}$$)
NotUniformError from typegpu.ts 1.27 kB ($${\color{red}+2.4\%}$$)
isWgslData from typegpudata.ts 1.28 kB ($${\color{red}+2.4\%}$$)
MissingBindGroupsError from typegpu.ts 1.31 kB ($${\color{red}+2.4\%}$$)
MissingVertexBuffersError from typegpu.ts 1.32 kB ($${\color{red}+2.4\%}$$)
ResolutionError from typegpu.ts 1.51 kB ($${\color{red}+2.0\%}$$)
isBufferShorthand from typegpu.ts 1.73 kB ($${\color{red}+2.0\%}$$)
unstruct from typegpudata.ts 1.61 kB ($${\color{red}+1.9\%}$$)
isDisarray from typegpudata.ts 1.66 kB ($${\color{red}+1.9\%}$$)
isUnstruct from typegpudata.ts 1.66 kB ($${\color{red}+1.9\%}$$)
isLooseDecorated from typegpudata.ts 1.67 kB ($${\color{red}+1.9\%}$$)
isLooseData from typegpudata.ts 1.70 kB ($${\color{red}+1.8\%}$$)
ShaderGenerator from typegpu.ts 1.80 kB ($${\color{red}+1.7\%}$$)
isData from typegpudata.ts 2.35 kB ($${\color{red}+1.3\%}$$)
deepEqual from typegpudata.ts 2.74 kB ($${\color{red}+1.1\%}$$)
struct from typegpudata.ts 3.34 kB ($${\color{red}+0.9\%}$$)
ref from typegpudata.ts 4.12 kB ($${\color{red}+0.7\%}$$)
tgpuImportEverything.ts 246.17 kB ($${\color{red}+0.7\%}$$)
tgpu from typegpu.ts 246.17 kB ($${\color{red}+0.7\%}$$)
tgpu.fn from typegpu.ts 246.17 kB ($${\color{red}+0.7\%}$$)
tgpu.init from typegpu.ts 246.17 kB ($${\color{red}+0.7\%}$$)
tgpu.lazy from typegpu.ts 246.17 kB ($${\color{red}+0.7\%}$$)
tgpu.slot from typegpu.ts 246.17 kB ($${\color{red}+0.7\%}$$)
tgpu.const from typegpu.ts 246.17 kB ($${\color{red}+0.7\%}$$)
tgpu.unroll from typegpu.ts 246.17 kB ($${\color{red}+0.7\%}$$)
tgpu.resolve from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.accessor from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.comptime from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.vertexFn from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.computeFn from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.fragmentFn from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.privateVar from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpuImportOne.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.vertexLayout from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.workgroupVar from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.initFromDevice from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.bindGroupLayout from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.mutableAccessor from typegpu.ts 246.18 kB ($${\color{red}+0.7\%}$$)
tgpu.resolveWithContext from typegpu.ts 246.19 kB ($${\color{red}+0.7\%}$$)
importEntireLibrary.ts 273.00 kB ($${\color{red}+0.6\%}$$)
memoryLayoutOf from typegpudata.ts 39.56 kB ($${\color{red}+0.3\%}$$)
bool from typegpudata.ts 10.57 kB ($${\color{red}+0.3\%}$$)
f16 from typegpudata.ts 10.57 kB ($${\color{red}+0.3\%}$$)
f32 from typegpudata.ts 10.57 kB ($${\color{red}+0.3\%}$$)
i32 from typegpudata.ts 10.57 kB ($${\color{red}+0.3\%}$$)
u32 from typegpudata.ts 10.57 kB ($${\color{red}+0.3\%}$$)
u16 from typegpudata.ts 10.59 kB ($${\color{red}+0.3\%}$$)
textureDepth2d from typegpudata.ts 11.01 kB ($${\color{red}+0.3\%}$$)
textureDepthCube from typegpudata.ts 11.02 kB ($${\color{red}+0.3\%}$$)
texture1d from typegpudata.ts 11.03 kB ($${\color{red}+0.3\%}$$)
texture2d from typegpudata.ts 11.03 kB ($${\color{red}+0.3\%}$$)
texture3d from typegpudata.ts 11.03 kB ($${\color{red}+0.3\%}$$)
textureCube from typegpudata.ts 11.03 kB ($${\color{red}+0.3\%}$$)
textureDepth2dArray from typegpudata.ts 11.03 kB ($${\color{red}+0.3\%}$$)
textureDepthCubeArray from typegpudata.ts 11.04 kB ($${\color{red}+0.3\%}$$)
textureDepthMultisampled2d from typegpudata.ts 11.04 kB ($${\color{red}+0.3\%}$$)
texture2dArray from typegpudata.ts 11.04 kB ($${\color{red}+0.3\%}$$)
textureCubeArray from typegpudata.ts 11.05 kB ($${\color{red}+0.3\%}$$)
textureMultisampled2d from typegpudata.ts 11.05 kB ($${\color{red}+0.3\%}$$)
discard from typegpustd.ts 11.78 kB ($${\color{red}+0.3\%}$$)
arrayLength from typegpustd.ts 12.01 kB ($${\color{red}+0.3\%}$$)
extensionEnabled from typegpustd.ts 12.09 kB ($${\color{red}+0.3\%}$$)
disarrayOf from typegpudata.ts 12.53 kB ($${\color{red}+0.2\%}$$)
dpdx from typegpustd.ts 12.62 kB ($${\color{red}+0.2\%}$$)
dpdxCoarse from typegpustd.ts 12.63 kB ($${\color{red}+0.2\%}$$)
dpdxFine from typegpustd.ts 12.63 kB ($${\color{red}+0.2\%}$$)
dpdyCoarse from typegpustd.ts 12.63 kB ($${\color{red}+0.2\%}$$)
dpdyFine from typegpustd.ts 12.63 kB ($${\color{red}+0.2\%}$$)
dpdy from typegpustd.ts 12.63 kB ($${\color{red}+0.2\%}$$)
fwidthCoarse from typegpustd.ts 12.63 kB ($${\color{red}+0.2\%}$$)
fwidthFine from typegpustd.ts 12.63 kB ($${\color{red}+0.2\%}$$)
fwidth from typegpustd.ts 12.63 kB ($${\color{red}+0.2\%}$$)
atomicLoad from typegpustd.ts 13.38 kB ($${\color{red}+0.2\%}$$)
atomicStore from typegpustd.ts 13.38 kB ($${\color{red}+0.2\%}$$)
textureBarrier from typegpustd.ts 13.38 kB ($${\color{red}+0.2\%}$$)
atomicAdd from typegpustd.ts 13.39 kB ($${\color{red}+0.2\%}$$)
atomicAnd from typegpustd.ts 13.39 kB ($${\color{red}+0.2\%}$$)
atomicMax from typegpustd.ts 13.39 kB ($${\color{red}+0.2\%}$$)
atomicMin from typegpustd.ts 13.39 kB ($${\color{red}+0.2\%}$$)
atomicOr from typegpustd.ts 13.39 kB ($${\color{red}+0.2\%}$$)
atomicSub from typegpustd.ts 13.39 kB ($${\color{red}+0.2\%}$$)
atomicXor from typegpustd.ts 13.39 kB ($${\color{red}+0.2\%}$$)
storageBarrier from typegpustd.ts 13.39 kB ($${\color{red}+0.2\%}$$)
workgroupBarrier from typegpustd.ts 13.39 kB ($${\color{red}+0.2\%}$$)
vec2b from typegpudata.ts 16.96 kB ($${\color{red}+0.2\%}$$)
vec2f from typegpudata.ts 16.96 kB ($${\color{red}+0.2\%}$$)
vec2h from typegpudata.ts 16.96 kB ($${\color{red}+0.2\%}$$)
vec2i from typegpudata.ts 16.96 kB ($${\color{red}+0.2\%}$$)
vec2u from typegpudata.ts 16.96 kB ($${\color{red}+0.2\%}$$)
vec3b from typegpudata.ts 16.96 kB ($${\color{red}+0.2\%}$$)
vec3f from typegpudata.ts 16.96 kB ($${\color{red}+0.2\%}$$)
vec3h from typegpudata.ts 16.96 kB ($${\color{red}+0.2\%}$$)
vec3i from typegpudata.ts 16.96 kB ($${\color{red}+0.2\%}$$)
vec3u from typegpudata.ts 16.96 kB ($${\color{red}+0.2\%}$$)
vec4b from typegpudata.ts 16.96 kB ($${\color{red}+0.2\%}$$)
vec4f from typegpudata.ts 16.96 kB ($${\color{red}+0.2\%}$$)
vec4h from typegpudata.ts 16.96 kB ($${\color{red}+0.2\%}$$)
vec4i from typegpudata.ts 16.96 kB ($${\color{red}+0.2\%}$$)
vec4u from typegpudata.ts 16.96 kB ($${\color{red}+0.2\%}$$)
formatToWGSLType from typegpudata.ts 18.44 kB ($${\color{red}+0.2\%}$$)
uint8 from typegpudata.ts 18.44 kB ($${\color{red}+0.2\%}$$)
float16 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
float16x2 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
float16x4 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
float32 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
float32x2 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
float32x3 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
float32x4 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
sint16 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
sint16x2 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
sint16x4 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
sint32 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
sint32x2 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
sint32x3 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
sint32x4 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
sint8 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
sint8x2 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
sint8x4 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
snorm16 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
snorm16x2 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
snorm16x4 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
snorm8 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
snorm8x2 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
snorm8x4 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
uint16 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
uint16x2 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
uint16x4 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
uint32 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
uint32x2 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
uint32x3 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
uint32x4 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
uint8x2 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
uint8x4 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
unorm10 10 10 2 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
unorm16 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
unorm16x2 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
unorm16x4 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
unorm8 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
unorm8x2 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
unorm8x4 bgra from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
unorm8x4 from typegpudata.ts 18.45 kB ($${\color{red}+0.2\%}$$)
packedFormats from typegpudata.ts 18.47 kB ($${\color{red}+0.2\%}$$)
isPackedData from typegpudata.ts 18.51 kB ($${\color{red}+0.2\%}$$)
alignmentOf from typegpudata.ts 19.49 kB ($${\color{red}+0.2\%}$$)
d from typegpu.ts 84.39 kB ($${\color{red}+0.1\%}$$)
subgroupAdd from typegpustd.ts 21.52 kB ($${\color{red}+0.1\%}$$)
subgroupAll from typegpustd.ts 21.53 kB ($${\color{red}+0.1\%}$$)
subgroupAnd from typegpustd.ts 21.53 kB ($${\color{red}+0.1\%}$$)
subgroupAny from typegpustd.ts 21.53 kB ($${\color{red}+0.1\%}$$)
subgroupBallot from typegpustd.ts 21.53 kB ($${\color{red}+0.1\%}$$)
subgroupBroadcastFirst from typegpustd.ts 21.53 kB ($${\color{red}+0.1\%}$$)
subgroupBroadcast from typegpustd.ts 21.53 kB ($${\color{red}+0.1\%}$$)
subgroupElect from typegpustd.ts 21.53 kB ($${\color{red}+0.1\%}$$)
subgroupExclusiveAdd from typegpustd.ts 21.53 kB ($${\color{red}+0.1\%}$$)
subgroupExclusiveMul from typegpustd.ts 21.53 kB ($${\color{red}+0.1\%}$$)
subgroupInclusiveAdd from typegpustd.ts 21.53 kB ($${\color{red}+0.1\%}$$)
subgroupInclusiveMul from typegpustd.ts 21.53 kB ($${\color{red}+0.1\%}$$)
subgroupMax from typegpustd.ts 21.53 kB ($${\color{red}+0.1\%}$$)
subgroupMin from typegpustd.ts 21.53 kB ($${\color{red}+0.1\%}$$)
subgroupMul from typegpustd.ts 21.53 kB ($${\color{red}+0.1\%}$$)
subgroupOr from typegpustd.ts 21.53 kB ($${\color{red}+0.1\%}$$)
subgroupShuffleDown from typegpustd.ts 21.53 kB ($${\color{red}+0.1\%}$$)
subgroupShuffleUp from typegpustd.ts 21.53 kB ($${\color{red}+0.1\%}$$)
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@reczkok reczkok marked this pull request as ready for review March 13, 2026 17:01
@reczkok reczkok force-pushed the impr/allow-buffer-write-encoder branch from 3941b59 to a75db15 Compare March 17, 2026 16:18
@reczkok reczkok requested a review from Copilot March 17, 2026 16:30

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@reczkok reczkok marked this pull request as draft March 18, 2026 11:11
@reczkok reczkok changed the title impr: More permissive options for buffer writes along with sliced writes impr: More capable and performant write API Mar 18, 2026
reczkok added 16 commits March 18, 2026 16:13
@reczkok
Allow permissive vector inputs and buffer slices
74c4a5c 
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
Validate buffer write offsets and update docs
60fa53c 
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).
@reczkok
Fix vector component byte offsets in writers
0864c2f 
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
fix format
77663de
@reczkok
smol
8ad10af
@reczkok
simplify
06b4541
@reczkok
cleaner
0bed51c
@reczkok
rethink appraoch
0195208
@reczkok
better test
d92a494
@reczkok
remember intial exists
4c94384
@reczkok
turbo fast path
0af9cac
@reczkok
fixes and bench dev example
c7ff87c
@reczkok
refactor writer builder
ad005dc
@reczkok
cleanup
30b4128
@reczkok
more is not better
8329afa
@reczkok
clean
e51409a
@reczkok reczkok force-pushed the impr/allow-buffer-write-encoder branch from 7aea73d to e51409a Compare March 18, 2026 15:13
@reczkok reczkok marked this pull request as ready for review March 18, 2026 15:14
Copilot AI reviewed Mar 18, 2026
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Pull request overview

Copilot reviewed 20 out of 20 changed files in this pull request and generated 3 comments.

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packages/typegpu/src/core/buffer/buffer.ts
Comment on lines 350 to +367
const gpuBuffer = this.buffer;
const bufferSize = sizeOf(this.dataType);
const startOffset = options?.startOffset ?? 0;
const endOffset = options?.endOffset ?? bufferSize;
const size = endOffset - startOffset;

if (gpuBuffer.mapState === 'mapped') {
const mapped = gpuBuffer.getMappedRange();
this._writeToTarget(mapped, data);
this._writeToTarget(mapped, data, options);
return;
}

const size = sizeOf(this.dataType);
if (!this._hostBuffer) {
this._hostBuffer = new ArrayBuffer(size);
this._hostBuffer = new ArrayBuffer(sizeOf(this.dataType));
}

this._writeToTarget(this._hostBuffer, data);
this.#device.queue.writeBuffer(gpuBuffer, 0, this._hostBuffer, 0, size);
this._writeToTarget(this._hostBuffer, data, options);
this.#device.queue.writeBuffer(gpuBuffer, startOffset, this._hostBuffer, startOffset, size);
packages/typegpu/src/data/wgslTypes.ts
? Int32Array
: T extends Vec2u | Vec3u | Vec4u | U32
? Uint32Array
: never;
apps/typegpu-docs/src/content/docs/fundamentals/buffers.mdx
Combined with `startOffset` and `d.memoryLayoutOf`, this lets you write to a precise region of the buffer.

:::note
Both offsets are **byte-based**. Any component whose byte position falls at or beyond `endOffset` is not written, which means offsets that do not align to schema element boundaries can result in partial elements being written. Use `d.memoryLayoutOf` to target whole elements safely.
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@reczkok