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Crafter.Graphics/interfaces
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catbot d712218f17 perf(input-field): O(n) cursor hit test via Font::NearestCursorByte (#56) 
InputField_HitTestCursor mapped a click x to a cursor byte offset by
calling Font::GetLineWidth on every prefix value[0..i] for i=1..size.
Each call re-walks from byte 0, so the hit test was O(n^2) glyph-metric
lookups (each an uncached stbtt cmap binary search). It also iterated
raw byte boundaries, so on multibyte UTF-8 input it could return an
offset splitting a codepoint — an invalid position for the byte-based
cursorPos.

Add Font::NearestCursorByte: one left-to-right cumulative-advance pass
(O(n) metrics, scale computed once) over codepoint boundaries, returning
the byte offset of the boundary nearest the target. Cumulative advance is
monotonic, so the scan stops past the closest boundary. The hit test now
delegates to it.

Adds tests/InputFieldHitTest, a pure-CPU regression test (no Vulkan
device/window): a px sweep across ASCII and multibyte strings compared
against an independent brute-force nearest-boundary oracle, plus the
left/right/empty/end-of-text edge cases and a codepoint-boundary invariant.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-16 16:55:03 +00:00
..
Crafter.Graphics-Animation.cppm cleaned up renderer 2026-03-09 20:10:19 +01:00
Crafter.Graphics-Clipboard.cppm clipboard 2026-05-19 00:45:22 +02:00
Crafter.Graphics-ComputeShader.cppm fix(vulkan-rt): configurable recursion depth + per-shader TLAS push for compute (#21) 2026-06-03 18:35:39 +00:00
Crafter.Graphics-Decompress.cppm browser DOM support 2026-05-18 02:07:48 +02:00
Crafter.Graphics-DescriptorHeapVulkan.cppm fix(device): add preferred mask + required-only fallback to GetMemoryType (#59) 2026-06-16 16:03:50 +00:00
Crafter.Graphics-DescriptorHeapWebGPU.cppm webgpu improvements 2026-05-24 13:32:08 +02:00
Crafter.Graphics-Device.cppm fix(device): add preferred mask + required-only fallback to GetMemoryType (#59) 2026-06-16 16:03:50 +00:00
Crafter.Graphics-Dom.cppm browser DOM support 2026-05-18 02:07:48 +02:00
Crafter.Graphics-DomEvents.cppm browser DOM support 2026-05-18 02:07:48 +02:00
Crafter.Graphics-Font.cppm perf(input-field): O(n) cursor hit test via Font::NearestCursorByte (#56) 2026-06-16 16:55:03 +00:00
Crafter.Graphics-FontAtlas.cppm Merge pull request 'perf(text): fold Ensure+Lookup into FontAtlas::EnsureAndGet (#53)' (#84) from claude/issue-53 into master 2026-06-16 17:44:20 +02:00
Crafter.Graphics-ForwardDeclarations.cppm rendertargetvulkan 2026-04-11 18:48:00 +02:00
Crafter.Graphics-Gamepad.cppm new input system 2026-05-12 00:24:48 +02:00
Crafter.Graphics-GraphicsTypes.cppm webgpu support 2026-05-18 04:58:52 +02:00
Crafter.Graphics-Image2D.cppm feat(webgpu): HDR post-process primitives — float textures, storage-texture bindings, RESOLVE→HDR target (#27) 2026-06-09 12:55:14 +00:00
Crafter.Graphics-ImageVulkan.cppm fix(image): scope sampled-image upload barriers to the real consumer stage (#54) 2026-06-16 16:01:23 +00:00
Crafter.Graphics-Input.cppm new input system 2026-05-12 00:24:48 +02:00
Crafter.Graphics-InputField.cppm webgpu improvements 2026-05-24 13:32:08 +02:00
Crafter.Graphics-Keys.cppm browser DOM support 2026-05-18 02:07:48 +02:00
Crafter.Graphics-Mesh.cppm feat(rt): BuildProcedural/RefitProcedural from a device AABB buffer (#37) 2026-06-16 14:12:04 +00:00
Crafter.Graphics-PipelineRTVulkan.cppm fix(vulkan-rt): configurable recursion depth + per-shader TLAS push for compute (#21) 2026-06-03 18:35:39 +00:00
Crafter.Graphics-PipelineRTWebGPU.cppm feat(webgpu): HDR post-process primitives — float textures, storage-texture bindings, RESOLVE→HDR target (#27) 2026-06-09 12:55:14 +00:00
Crafter.Graphics-PlainComputeShader.cppm webgpu improvements 2026-05-24 13:32:08 +02:00
Crafter.Graphics-RenderingElement3D.cppm tlas build options 2026-06-16 15:49:17 +02:00
Crafter.Graphics-RenderPass.cppm webgpu support 2026-05-18 04:58:52 +02:00
Crafter.Graphics-Router.cppm browser DOM support 2026-05-18 02:07:48 +02:00
Crafter.Graphics-RT.cppm feat(webgpu-rt): add intersection stage, procedural hit group, AABB BLAS API 2026-06-02 22:09:14 +00:00
Crafter.Graphics-RTPass.cppm feat(webgpu-rt): atomic pixel accumulator + raysPerPixel for >1 ray/pixel/bounce (#30) 2026-06-09 22:45:25 +00:00
Crafter.Graphics-SamplerVulkan.cppm browser DOM support 2026-05-18 02:07:48 +02:00
Crafter.Graphics-ShaderBindingTableVulkan.cppm fix(vulkan-rt): configurable recursion depth + per-shader TLAS push for compute (#21) 2026-06-03 18:35:39 +00:00
Crafter.Graphics-ShaderBindingTableWebGPU.cppm feat(webgpu-rt): add intersection stage, procedural hit group, AABB BLAS API 2026-06-02 22:09:14 +00:00
Crafter.Graphics-ShaderVulkan.cppm fix(vulkan-rt): configurable recursion depth + per-shader TLAS push for compute (#21) 2026-06-03 18:35:39 +00:00
Crafter.Graphics-Types.cppm browser DOM support 2026-05-18 02:07:48 +02:00
Crafter.Graphics-UI.cppm perf(text): cache shaped runs in ShapeText (#52) 2026-06-16 15:40:52 +00:00
Crafter.Graphics-UIComponents.cppm perf(text): cache shaped runs in ShapeText (#52) 2026-06-16 15:40:52 +00:00
Crafter.Graphics-VulkanBuffer.cppm fix(device): add preferred mask + required-only fallback to GetMemoryType (#59) 2026-06-16 16:03:50 +00:00
Crafter.Graphics-VulkanTransition.cppm browser DOM support 2026-05-18 02:07:48 +02:00
Crafter.Graphics-WebGPU.cppm feat(rt): BuildProcedural/RefitProcedural from a device AABB buffer (#37) 2026-06-16 14:12:04 +00:00
Crafter.Graphics-WebGPUBuffer.cppm webgpu improvements 2026-05-24 13:32:08 +02:00
Crafter.Graphics-WebGPUComputeShader.cppm feat(webgpu): HDR post-process primitives — float textures, storage-texture bindings, RESOLVE→HDR target (#27) 2026-06-09 12:55:14 +00:00
Crafter.Graphics-Window.cppm Merge remote-tracking branch 'origin/master' into claude/issue-40 2026-06-16 15:41:59 +00:00
Crafter.Graphics.cppm webgpu improvements 2026-05-24 13:32:08 +02:00