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feat(viz): graph_force_layout_gpu compute + spatial hash (issue 0049h)

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Layout force-directed en GPU usando 5 compute shaders 4.3 + spatial hash
grid 64x64. API simetrica con graph_force_layout (CPU) para que el consumer
pueda swappear sin cambios. atomicCompSwap loop para float-add portable.

- cpp/functions/viz/graph_force_layout_gpu.{h,cpp,md}: nuevo modulo
- cpp/functions/gfx/gl_loader: anade glDispatchCompute, glMemoryBarrier,
  glBindBufferBase, glGetBufferSubData (Windows wgl)
- cpp/tests/test_graph_force_layout_gpu.cpp: smoke + pinned + CPU vs GPU.
  Crea ventana GLFW oculta GL 4.3; SKIP si headless o sin compute.
- demos_graph: checkbox "GPU layout" para swappear CPU/GPU en runtime
- issue movido a dev/issues/completed/
This commit is contained in:
Egutierrez
2026-04-29 23:29:16 +02:00
parent e0f2d919de
commit 9c26c3917c
11 changed files with 1096 additions and 2 deletions
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cpp/apps/primitives_gallery/CMakeLists.txt
+1
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@@ -69,6 +69,7 @@ add_imgui_app(primitives_gallery
${CMAKE_SOURCE_DIR}/functions/viz/graph_renderer.cpp
${CMAKE_SOURCE_DIR}/functions/viz/graph_icons.cpp
${CMAKE_SOURCE_DIR}/functions/viz/graph_force_layout.cpp
${CMAKE_SOURCE_DIR}/functions/viz/graph_force_layout_gpu.cpp
${CMAKE_SOURCE_DIR}/functions/viz/graph_viewport.cpp
${CMAKE_SOURCE_DIR}/functions/core/graph_spatial_hash.cpp
# GL loader (Linux no-op, Windows wglGetProcAddress)