The material you built is now the material that arrives. Until this version only connected inputs were exported: anything you typed as a number was dropped and replaced by a default. A metal with Metallic 1.0 and Roughness 0.2 reached Unity as Metallic 0.0 and Smoothness 0.5, and reached Unreal as a completely empty material — four of seven test materials exported with not a single expression in the file.

Roughness is now converted, not renamed. Unity stores smoothness, Blender stores roughness, and they are opposites. Measured: Roughness 0.2 now arrives as Smoothness 0.8. Without the conversion a mirror metal arrived matte.

Three more fixes on the Unreal side. Every material was called M_Material regardless of its name in Blender — it now carries its own. A texture node with no image was written out with an empty reference and wired to Normal, so a normal map silently did nothing; a normal map now takes the image from the texture feeding it. And an unconnected Normal is left alone instead of being pinned to a degenerate constant.

Measured before and after on seven materials: empty Unreal materials 4 → 0, wrong material names 7 → 0, dead texture references 1 → 0. A new check covers exactly this and fails on 1.2.1 in 7 of its 11 measurements.

Re-export your materials to pick this up.

Every exported graph now compiles in Unity. Until this version they imported and then failed with invalid subscript 'TangentSpaceNormal' in the vertex program, three errors per shader, and every material came out pink.

The cause was one wrong value. A shader graph has two blocks built on the same slot class but living in different coordinate spaces: the vertex Normal block is object space, the surface Normal (Tangent Space) block is tangent space. The exporter decided the space from the slot class instead of from the block, so the vertex block was written as tangent space. An unconnected tangent-space normal slot asks Unity for a value the vertex stage does not have, and compilation stops there.

Measured on seven materials — plain, metal, glass, image texture, normal map, bump and UV transform. Before: 18 of 22 compiled stages failed on every one of them. After: 22 of 22 compile, zero errors, on Unity 6000.4 with URP.

Re-export your materials. Files exported with an earlier version need re-exporting, not repairing.

Two checks were added, because the ones already in place passed the broken files. The format check now reads the required coordinate space of every block out of Unity's own shipped graphs and compares — it reddens on all seven broken files and passes all seven fixed ones. And the exported graphs are now imported into a real Unity editor and every pass of every shader is compiled, which is the question that was never being asked before.

Unity files are now written in the format Unity reads. Earlier versions wrote a single JSON object with the nodes nested inside it. A real .shadergraph is a stream of separate objects that reference each other by id, the surface is described by blocks rather than by a master node, and the render pipeline is named by a target object. Files produced before this version were not importable by URP. Re-export your materials and the new files will open.

Toon setups now arrive as a baked texture. Shader To RGB is an EEVEE-only trick and Unity has no equivalent, so a toon material used to land in the graph as a note saying so. Any node this engine cannot express is now baked and wired in as a map. The same rule covers procedural textures and colour ramps.

Two crashes fixed. Channel packing failed as soon as there was anything to pack, and baking failed with an empty path when the .blend file had never been saved.

Blender 4.2, 5.1 and 5.2, all green.

Export refusals now name their cause. With no export folder chosen and an unsaved .blend file there is nowhere to write the shader. The add-on used to answer "Export failed. Check warnings above."; it now says to choose an export folder or save the file first, and the panel shows the same line before you press the button.

Objects with several material slots. The active material is exported, as before, and the add-on now says so and names how many slots the object has, instead of quietly producing one file for three materials.

The conversion itself is unchanged. Checked on Blender 4.2.9, 5.1.0, 5.2.0, 5.2.1 and 5.2.2 — 20 checks per build, zero problems.