This article contains the full specification for CheckMate Pro, TurboSquid's highest quality standard for 3D models.
CheckMate Pro Specification
v1.07 July 20, 2012 1. Limitations on CheckMate Pro Certification
1.1 Quality - The 3D model must have a high level of aesthetic appeal as well as workability. If the model is intended to represent a real-world object, it must accurately represent that object. Quads and triangles must be intelligently distributed for good edge flow and clean topology.
220.127.116.11 Product must include at least one of the above file formats as its native file format in order to be considered for CheckMate Pro certification.
18.104.22.168 Other file formats are not inspected for CheckMate Pro certification.
1.3.3 Certification by format - CheckMate Pro certification is awarded on a per-format basis. If the native file format passes certification but another certifiable file format fails, the native format (and product) will still be marked as CheckMate certified. The non-native must, as a minimum, pass the requirements for CheckMate Lite inspection (opening and rendering without errors).
2.2.2 Mostly quads - The model must use quads as much as possible. A range of 10%-20% tris is sensible for most models, but some will call for a higher percentage to form sensible topology. Models are inspected manually to ensure a sensible quad/tri ratio is maintained.
2.3 Real-World Scale
2.3.1 Real-world scale within 1-3% - Model can use any units to achieve real-world scale. If the model does not have an exact real-world counterpart (such as a human character or an unbranded car), the model must use the size/scale of comparable objects in real life.
2.3.2 Exception for exceedingly large/small models - Models of objects that have a real-world scale at a microscopic or astronomical level, such as amoebas and solar systems, are excepted from having real-world scale.
2.3.3 Units used in the file should be included in the description.
2.4.2 Entire model sits on or just above ground plane
2.4.3 Oriented to World up-axis - The obvious "up" side of the model must be pointing toward the World up axis. In other words, the model can't be lying on its side or upside-down when the file is opened.
2.7.1 At least one material must be applied to the model to represent real-world object surfaces. While not every object must have a material or texture, the customer should be able to render the model upon purchase and get quality surface representation.
2.7.5 No texture paths referenced by model. Any texture paths must be stripped from model. See Texture References.
2.8 UVs - A model with mapped textures must meet these requirements:
2.8.1 No obvious texture stretching on model
2.8.2 Seams hidden in less visible areas of model
2.8.3 People and animals must have unwrapped UVs - This standard does not apply to larger scenes where the character or animal is not the focal point.
2.9.1 Transforms must be frozen/reset unless model is animated
2.9.2 Hierarchy objects must be uniquely and appropriately named
2.9.3 Rig must function as expected - Rig must perform simple deformations
2.9.4 Custom rig must include instructions - A Readme, PDF document, or other documentation on how to use the rig. Rigs that use Biped or CAT are not required to have a readme unless there are custom controls.
2.10.1 Animation must play smoothly - No obvious glitches or hitches
2.10.2 Animation designated as "looping" must loop smoothly
2.10.3 No spikes in animation graph
3 Standards for Product Preview
3.1 Preview Images
3.1.1 Rendered Preview Images Requirements - At least five (5) rendered images with these attributes:
22.214.171.124 1200 x 1200 resolution minimum. (signature image used only for search results can be smaller resolution, the other four (4) hi-res images will be visible on the product page).
126.96.36.199 Set of rendered thumbnails show the model from a variety of angles
188.8.131.52 Shows the model's quality with aesthetic appeal
3.1.2 Signature Image Requirements - Image for Search results, set up in Publisher
184.108.40.206 600 x 600 resolution minimum
220.127.116.11 Square resolution - If the image resolution is above 600x600, it must be 1600x1600, 2400x2400, or other square resolution.
18.104.22.168 No text, borders, watermarking or overlay imagery.
22.214.171.124 Shows only the model and no additional elements. Can include a shadow under or behind the model. Shadows are allowed to clip the edge of the bottom and lower third of the image only.
126.96.36.199 Shows the entire model. Exceptions can be made for closeups of characters and other models, at inspector discretion.
188.8.131.52 Rendered against background color RGB (247,247,247). Be sure to check your final image before posting, often JPG compression changes the RGB value to something other than 247.
184.108.40.206 Entire rendered model inside image boundaries.
220.127.116.11 Exceptions for interior/exterior architectural scenes, terrains and closeups:
18.104.22.168.1 Model does not have to fit inside image, but can bleed off the edges. 22.214.171.124.2 Background can be a sky or other simple, appropriate background. 126.96.36.199.3 If sky or other background elements shown in Signature Image are not included with the product, this must be explicitly stated in Description.
3.1.3 Second Rendered Preview Image Requirements - The second thumbnail in Publisher (just after Signature Image) must be a rendered thumbnail that meets these requirements:
188.8.131.52 Image shows the model with exactly the same pose and angle as Signature Image. Other spec requirements for signature image also apply (square, no text, logos or borders.) Turntables are not allowed as the signature or second image. Watermarking permitted.
184.108.40.206 Image includes background/environment that is dark, realistic or best highlights the quality of the model (inspector discretion).
3.1.4 Wireframe Image Requirements - At least two (2) wireframe images with these attributes:
220.127.116.11 1200 x 1200 resolution minimum
18.104.22.168 Square resolution - If image resolution is above 1200x1200, the resolution must be 1600x1600, 2400x2400, or other square resolution.
22.214.171.124 Set of wireframes show model from different angles and/or closeups.
126.96.36.199 Shows wireframe from visible side of model only (not see-through)
188.8.131.52 Wire color must be black, white, or gray. Other colors are allowed at Inspector discretion.
184.108.40.206 Background must be of neutral tone and distinctively different than the non-wireframe images.
3.1.5 Unwrapped UV Image Requirement - The Product Preview includes at least one image of the unwrapped UVs if one of the following options is selected for the model's Unwrapped UVs attribute:
220.127.116.11 Image shows the entire texture image overlaid by the UV cage
18.104.22.168 Image is at least 400x400 resolution
Product Preview must include at least one (1) turntable with the following attributes:
3.2.1 Rendered (not wireframe or other shading)
3.2.2 Shows the entire model
3.2.3 Resolution of 1200x1200 or above
3.2.4 Square resolution - If at a resolution over 1200x1200, the turntable must be rendered at a square resolution such as 1600x1600.
3.2.5 36-72 frames long
3.2.6 Equal number of degrees between each frame
3.2.7 Loops seamlessly and turns in a counter-clockwise direction
3.2.8 Provides an informative, quality view of the model - Must be well lit and rendered to really show the model.
3.2.9 Exceptions for architecture - interiors can have a centrally located camera that rotates looking outward, scenes and exteriors can substitute flyovers and flybys for looping animations where appropriate.
3.3 Main Product Files
3.3.1 Includes at least one certifiable file format (See 1.3 File Formats)
3.4.2 Product Name must be composed of adjectives and nouns pertaining to the model, separated by spaces or underscores
3.4.3 Product name must not contain file extensions
3.4.4 All words in the Product Name except articles, conjunctions and prepositions must have initial capital letter. Words that represent acronyms can be all caps, but product Name should not be all caps.
3.5 3D Model Specifications
3.5.1 Polygon Count value matches poly count in native file format - If you've applied subdivision to the native file format which is removable (as with a TurboSmooth modifier in 3ds Max or an editable history in Maya) you must enter the polygon count without subdivision.
3.5.2 Vertex Count value matches vertex count in native file format before subdivision
3.5.3 In the Geometry field, one of these two choices is selected:
Polygonal Quads only
3.5.4 All product specification fields are accurate with respect to model being submitted for certification.
3.6.2 Renderer used for preview images specified (if not default for native software)
3.6.3 Third-party plug-ins or renderers used or referenced in model specified - If the renderer in the model file is set to a non-default renderer, or if materials are those from a non-default renderer, state this in Description.
3.6.4 Rigging type specified (if any) - If model is rigged, state what system is used for the rig (Biped, CAT, etc.) or if it is custom using your software's bones and linking tools.
3.6.5 Animation details specified - Frame length, frames per second used, content of animation, etc.
3.6.7 All descriptions should use proper grammar, punctuation, spelling, capitalization, and correct product names.
3.7.1 Must be relevant
3.7.2 Only one category is required
3.7.3 If two categories are selected, the first category should be the most relevant of the two
3.8.1 Must be spelled correctly
3.8.2 Must be relevant
3.8.3 Must include at least five (5) unique keywords
3.9 No Personal Contact Information - This is a requirement for all products published for sale at TurboSquid.
The CheckMate Specifications, CheckMate names, including “CheckMate Pro” and “CheckMate Lite,” and all related branding and logos, whether registered or not, are the property of TurboSquid. TurboSquid retains all ownership of these trademarks and copyrighted material. They are protected by intellectual property laws of the U.S. or in some instances, foreign laws and international treaties. Unauthorized use may violate copyright, trademark and other laws.
CheckMate Specifications may be reused and republished by third parties with permission, with the exception of third parties that sell or distribute 3D content as part of a stock 3D business. In no case may models distributed or sold anywhere other than at turbosquid.com (or its affiliates including the SquidGuild Network) be referred to as "CheckMate," "CheckMate Certified," "CheckMate Pro," "CheckMate Lite" or any by similar name referencing CheckMate.
Participants in the CheckMate program who have received certification and would like to use CheckMate branding to promote their own models may do so on other sites, so long as such models are not sold on those other sites.
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