Validate OpenGL command pass barriers

docs/modernization/build-inventory.md

@@ -279,12 +279,13 @@ Known local toolchain state:
   uploads, mipmap generation, texture transitions, texture copies, texture
   readbacks, frame captures, passthrough commands, trace commands, unsupported
   commands, and render-pass ordering errors such as state changes outside a
-  pass, nested passes, and unclosed passes. It also validates executable
-  command dependencies, including shader-before-uniform and shader-plus-mesh
-  before draw within each render pass, and rejects invalid texture/sampler bind
-  slots in malformed recorded streams. `pano_cli record-render` emits the
-  OpenGL plan texture/sampler bind counts so automation can assert backend
-  interpretation without an OpenGL context.
+  pass, nested passes, texture I/O or blits inside a pass, and unclosed passes.
+  It also validates executable command dependencies, including
+  shader-before-uniform and shader-plus-mesh before draw within each render
+  pass, and rejects invalid texture/sampler bind slots in malformed recorded
+  streams. `pano_cli record-render` emits the OpenGL plan texture/sampler bind
+  counts so automation can assert backend interpretation without an OpenGL
+  context.
   Desktop VR drawing also consumes backend-owned scissor/depth/blend state,
   depth clear masks, active texture units, and fallback 2D texture unbind
   targets while retaining the existing VR SDK/platform bridge shape.

docs/modernization/roadmap.md

@@ -538,10 +538,10 @@ passes, draws, shader binds, shader uniforms, texture/sampler binds, texture
 uploads, mipmap generation, texture transitions, texture copies, texture
 readbacks, frame captures, passthrough commands, trace commands, unsupported
 commands, and render-pass ordering errors such as state changes outside a pass,
-nested passes, and unclosed passes. It also validates executable command
-dependencies, including shader-before-uniform and shader-plus-mesh before draw
-within each render pass, and rejects invalid texture/sampler bind slots in
-malformed recorded streams.
+nested passes, texture I/O or blits inside a pass, and unclosed passes. It
+also validates executable command dependencies, including shader-before-uniform
+and shader-plus-mesh before draw within each render pass, and rejects invalid
+texture/sampler bind slots in malformed recorded streams.
 The existing renderer classes are not yet fully
 behind the renderer interfaces.