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rendertarget_range(3) Arcan Lua API rendertarget_range(3) NAME rendertarget_range - Limit the order- range of objects to render SYNOPSIS bool:ok rendertarget_range( vid:rtgt, int:min, int:max ) DESCRIPTION In some render- and optimization scenarios one might want to only allow a certain set of objects to be rendered. Normally object hierarchies are or- dered based on an order value, see order_image and the default rendering pipeline will process these objects according to that order, going from low to high. Using this function, a rendertarget (including the special WORLDID ) can be set to skip values that fall outside min <= val <= max. The ob- jects will still have external storage and similar processing being syn- chronized, they will just not be considered when generating the rendertar- get output. NOTES 1 if min or max is set to < 0 or max < min, the rendertarget will re- set to the default mode of everything being processed. 2 if max == min, nothing will be drawn. EXAMPLE function rendertarget_range0() -- in this example, only the green object will be visible local red = color_surface(64, 64, 255, 0, 0); local green = color_surface(64, 64, 0, 255, 0); local blue = color_surface(64, 64, 0, 0, 255); show_image({red, green, blue}); move_image(green, 0, 64); move_image(blue, 64, 0); order_image(green, 5); rendertarget_range(WORLDID, 4, 6); end SEE ALSO: define_rendertarget(3) order_image(3) image_inherit_order(3) targetcontrol August 2026 rendertarget_range(3)
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