Validate OpenGL command pass barriers

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.