Map renderer sampler tokens to OpenGL

docs/modernization/build-inventory.md

@@ -207,7 +207,9 @@ Known local toolchain state:
   the legacy mesh draw path, plus the PanoPainter cube-face to OpenGL
   texture-target mapping used by `TextureCube`.
   It also owns and validates sampler wrap S/T/R, min/mag filter, and desktop
-  border-color parameter mapping used by legacy `Sampler`. The PanoPainter
+  border-color parameter mapping used by legacy `Sampler`, plus renderer API
+  sampler filter/address-mode to OpenGL token mapping including mirrored-repeat.
+  The PanoPainter
   shader attribute binding catalog, shader stage tokens, compile/link status
   queries, active-uniform count query, and matrix-uniform transpose token used
   by legacy `Shader` creation also live here. Renderer API blend factor/op to

docs/modernization/roadmap.md

@@ -464,7 +464,9 @@ OpenGL texture-target mapping used by `TextureCube` also lives in
 framebuffer diagnostic, framebuffer blit, render-target setup, clear-state,
 2D/cube texture setup, mesh draw-mode, and cube-face texture-target
 interpretation to that backend library. Sampler wrap, min/mag filter, and desktop border-color parameter
-mapping for legacy `Sampler` also lives in `pp_renderer_gl`. The PanoPainter shader attribute
+mapping for legacy `Sampler` also lives in `pp_renderer_gl`. Renderer API sampler
+filter/address-mode to OpenGL token mapping, including mirrored-repeat, is also
+tested there. The PanoPainter shader attribute
 binding catalog, shader stage tokens, compile/link status queries, active-uniform
 count query, and matrix-uniform transpose token also live in `pp_renderer_gl`
 and are consumed by legacy `Shader` creation. Renderer API blend factor/op to