SPHERICAL/HEMISPHERICAL gradients painted colour 1 at the centre;
AutoCAD's convention is colour 1 at the rim and colour 2 at the centre
(the INV variants swap them back). Both the native and the WebGL2
shader now mix the radial branch outside-in; linear/cylinder/curved
are untouched.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Hatch/wipeout boundary sub-loops were separated by NaN vertices that the
fill shaders detected with `p.x == p.x`. Intel Mesa folds that NaN
self-compare to `true` under fast math, so separators read as real
vertices, the ray-cast crossing count broke, and fills bled outside
their boundary — only on Intel iGPUs. GPU uploads now rewrite the
separators to a finite 1e30 sentinel (GPU_BOUNDARY_SEP) and the shaders
test `abs(x) < 1e29`, which every driver evaluates identically. The
CPU-side NaN representation is unchanged.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Tint (Chrome/Edge WebGPU) rejects derivative builtins reached after the
family loop's non-uniform early return, invalidating hatch_web/wipeout
shaders on Windows. Take dpdx/dpdy(xz) once at fs_main top and rotate
into the family frame in check_family — same math, uniform flow.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
GRADIENT silently degraded to a plain hatch: add_hatch rebuilt the
render model from the DXF entity but never encoded the gradient on it,
so the committed fill lost its gradient entirely. The entity now
carries the full gradient record (name, angle, colour stops,
solid-fill flag), and the standard shape set became selectable:
Linear / Cylinder / Spherical / Hemispherical / Curved plus an Invert
toggle, offered as prompt buttons on the GRADIENT command and as a
Gradient type dropdown + Invert box in the properties panel. All nine
standard DXF names round-trip (inverted linear persists by swapping
the colour stops), and the shaders shape each kind distinctly —
mirrored cylinder, eased curve, dome-profiled hemisphere — on both the
native and web pipelines without changing the GPU struct sizes.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
A gradient hatch was drawn linear from the entity colour to its second
stop, so a red->yellow spherical fill came out as a pale linear wash. Two
fixes:
- Colour: start from the gradient's first stop, not the entity colour.
hatch_model_from_dxf already baked stop-0 in; stop synced_hatch_models
from clobbering it with the entity's resolved colour for gradient fills.
- Shape: spherical / hemispherical / curved gradient names now render as a
radial fill (new shader mode 3, centred on the boundary with radius to the
farthest vertex) instead of linear. Native and web shaders both updated.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
WebGL2 has no vertex/fragment storage buffers, so the batched storage-buffer
hatch renderer (hatch_gpu) is disabled on wasm and real hatch fills never
rendered on the web build — the pick highlighted the boundary and the command
then appeared to cancel (issue #204).
Add a wasm-only per-hatch renderer (hatch_web_gpu + hatch_web.wgsl) that packs
the variable-length boundary / family / dash arrays into one RGBA32F data
texture read with textureLoad, instead of the fixed-size uniforms of the
wipeout path. This removes the MAX_FAMILIES (16) / MAX_HATCH_BOUNDARY_VERTS
(1024) / MAX_DASHES (128) caps, so every hatch — solid, gradient, and
arbitrarily complex line patterns — renders on the web. The fill algorithm
(in_polygon, per-family line/dash/dot, gradient, LOD, double-single vertex
transform) is identical to the desktop path; only the array ACCESS changes.
Pattern phase is anchored at world_origin with the boundary stored raw, and
scale / gradient-range clamped, to match the desktop batched renderer exactly.
Native (hatch_gpu + hatch.wgsl) and the wipeout mask renderer are untouched;
the new module and pipeline are gated on target_arch = "wasm32".
Also silence the resulting (and pre-existing) wasm-only dead-code warnings for
native-only paths so both the native and web builds compile clean.
Closes#204.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
