Route grid render state through GL backend

docs/modernization/roadmap.md

@@ -1102,6 +1102,9 @@ readback formats, sampler filters, depth/blend state, depth clears, viewport
 queries, color-mask booleans, active texture units, and float render-target
 formats to `pp_renderer_gl`, and its CPU lightmap row dispatch now uses the
 shared legacy `parallel_for` helper rather than platform-specific worker APIs.
+Its live heightmap draw and bake paths now execute depth/blend state changes,
+depth clears, color-write-mask toggles, active texture selection, and bake
+viewport changes through tested `pp_renderer_gl` dispatch adapters.
 Legacy `util.cpp` OpenGL error naming and `gl_state` save/restore now delegate
 error codes, state queries, framebuffer targets, texture binding targets, and
 active texture units to `pp_renderer_gl`.
@@ -2050,6 +2053,10 @@ Results:
   active texture units, viewport execution, color clears, and cube-face
   framebuffer-to-texture copies through tested renderer GL backend dispatch
   contracts.
+- `NodePanelGrid` live heightmap drawing and bake setup now route depth/blend
+  state, depth clears, color-write-mask toggles, active texture selection, and
+  bake viewport execution through tested renderer GL backend dispatch
+  contracts.
 - Canvas draw-merge shader-blend selection now consumes the extracted
   `pp_paint_renderer` stroke composite planner for current layer and primary
   brush blend modes, while preserving legacy OpenGL compositing execution under