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|terrain||Reference Terrain tile. Defines terrain space and alphamap resolution.|
|inputLayer||Selects the alphamap to paint.|
|boundsInTerrainSpace||The region in terrain space to edit.|
|extraBorderPixels||Number of extra border pixels required.|
PaintContext PaintContext containing the combined alphamap data for the specified region.
Helper function to set up a PaintContext for modifying the alphamap of one or more Terrain tiles.
BeginPaintTexture identifies that alphamap pixels that are within extraBorderPixels of the bounds rectangle.
The search is performed across adjacent connected Terrains.
The pixels are collected into a temporary render texture and stored in PaintContext.sourceRenderTexture.
After calling this function, you may modify the alphamap by writing the new values into PaintContext.destinationRenderTexture. Then, you may complete the modification by calling TerrainPaintUtility.EndPaintHeightmap to copy the modified data back to the Terrains. Alteratively, you may cancel the modification by calling TerrainPaintUtility.ReleaseContextResources to release the RenderTexture resources.
See Also: TerrainPaintUtility.EndPaintTexture and PaintContext.