Next to 3D people and vegetation, rendering realistic gravel is one of the last remaining challenges when it comes to architectural visualization.

Most 3D artists try to avoid graveled surfaces wherever possible. But gravel is a very important building material and cannot always be avoided – nor should it be. Its role in architecture, landscaping and even interior design will let this challenge persist. Fortunately, technology has now caught up with the problem. With this texture collection we are attempting to close this particular gap between the imagination of the client and what you as a 3D artist can deliver.

Main Features

Gravel Textures

134 ready-to-use gravel textures

3D Gravel

Gravel as real 3D geometry – an industry first

Stone Textures

257 stone textures for near-endless variety

125,00 

excl. VAT

    Learn more about our licensing models here.

  • This is a physical product on DVD. Direct download of all purchased content is provided. Shipping of the physical product is optional.
  • Total download size: 24.4 GB

Content

This product offers two entirely different ways to create graveled surfaces – one purely texture-based, the other using 3D geometry and stone textures.

Gravel Textures

This product contains a total of 134 gravel textures, based on 15 different styles, intended to be used with Normal mapping or Displacement mapping.

3D Gravel

As a first on the market, we offer gravel ‘textures’ in form of real 3D geometry. This product contains gravel meshes based on 15 different gravel styles in sizes of 4m² and 16m².

Gravel Stone Textures

Meant to be used with the 3D gravel meshes, this product also contains especially optimized stone textures in 257 different styles and colors, based on 94 distinct sets.

Gravel Textures

This product contains 134 different gravel textures, which were created based on 15 different gravel types and styles. Each gravel texture basically consists of two parts, the base texture and the variation texture. The base texture contributes the displacement and normal maps, which are unique to the gravel type. The variation texture contains diffuse, bump and reflectivity maps, which are unique to each variation.

Normal Map
Displacement Map
Ambient Occlusion Map
Edge Mask
Segment Mask
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Base Textures

There are 15 different base textures in total, each consisting of the following:

  • Displacement map: Contains depth information, describing the basic shape of the gravel surface
  • Normal map: Contains surface angle information, also describing the basic shape
  • Ambient occlusion (AO) map: Contains basic shading information
  • Edge map: Contains curvature information
  • Mask map: Contains mask information in form of a random color assigned to every individual stone

The displacement and normal maps are used in conjunction with the variation texture on render time. AO, edge and mask maps can help you create your own gravel textures (e.g. with Photoshop).

Diffuse Map
Diffuse Map (+Ambient Occlusion)
Bump Map
Specular Map
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Variation Textures

There are 134 gravel textures, each consisting of the following:

  • Diffuse map (+AO): Contains the color information of the texture with Ambient Occlusion baked-in.
  • Diffuse map: A second color map, optimized for use with displacement mapping
  • Bump map: Contains fine surface detail on individual stone pebbles
  • Reflectivity map: Contains surface roughness information, describing how reflective the surface appears. This map also has Ambient Occlusion baked-in.

These variation textures are to be used in conjunction with the gravel base textures, mentioned above.

Gravel #1, Scale

Scale

All gravel textures, base and variation, come in three different scales: 2m x 2m, 4m x 4m and 8m x 8m. This allows you to choose the scale that fits the requirements of your 3D scene best, i.e. larger area vs. higher resolution.

Gravel #1, Close Up

Usage

There is more than one way in which these gravel textures can be used. Depending on the capabilities of your rendering software, several different techniques might be available, such as Normal Mapping or Displacement Mapping.

With their power-of-2 resolution of 4096px x 4096px, these textures are also perfect in real-time applications, e.g. for architectural visualization or 3D games.

Normal Mapping vs. Displacement Mapping vs. 3D Mesh

Normal MappingDisplacement Mapping3D Mesh
Realism*********
Render Speed**********
Viewport Speed***********
Easy Workflow*************
Low Memory Use********

3D Gravel

There are inherent limitations when it comes to gravel textures. No matter how well the texture is made, how precise its normal or displacement map describes the virtual gravel surface, it still is just a two-dimensional approximation of a complex three-dimensional structure.

Several different techniques can be employed in trying to compensate for this fact.

Gravel #1, Displacement vs. 3D MeshGravel #1, Displacement vs. 3D Mesh

Displacement vs. 3D Gravel

One that is widely used is displacement mapping. Although certainly an improvement, the illusion breaks down quickly once one gets too close.

Since polygon counts matter less and less these days, it has now become a viable approach to render complex surfaces, such as gravel, as real 3D geometry.

The only remaining difficulty is to produce the actual 3D mesh data. We have developed a special simulation software that is capable of randomly creating different styles of pebbles, as well as scattering hundreds of thousands of them physically correct onto a specified area.

Gravel #1, UV Mapping

UV Mapping

Each individual pebble has been cleanly seamed and unwrapped (using ABF++) to produce a low-distortion mapping. The finished UV mapping is optimized for stone textures with a size of 50cm x 50cm. Using the high-resolution stone textures included in this product, all this allows for even extreme close-ups.

Gravel #1, Material IDs

Material IDs*

Each individual pebble has been assigned a random material ID between 1 and 10 (20 in case of gravel-base-13). This allows for the creation of custom mixtures of different stone types and colors. Simply use a Multi/Sub-Object material and assign different stone materials to create a virtually endless variety of styles.

* Not available for .obj files.

Gravel #1, Mesh Cluster

Mesh Clusters

To have the whole gravel surface as one single mesh object would not be practical. Neither would it be possible to have every pebble be its own mesh object. As a compromise, we’ve fused pebbles into individual pebble clusters of 25cm x 25cm each. This makes it possible to approximate the shape of a graveled area by deleting clusters outside of the area, while still being not too heavy on the viewport.

Gravel #1, Mesh Layers

Mesh Layers

In addition to clusters, most gravel meshes have also been split into two layers; a top-layer and a bottom-layer, each containing roughly half of the pebbles. This way you can choose which layer is visible, e.g. according to what density of pebbles is required. For gravel that is farther away or seen from a shallow angle, only one of the two layers may need to be switched on, for instance.

Gravel #1, Scale vs. Resolution

Scale/Resolution

The 3D gravel meshes that are contained in this product cover an area of nominally 2m x 2m and 4m x 4m. While both version have the same polygon count of roughly 8 million, the 2m version has four times more mesh detail per pebble as the 4m version. Use the 2m version where gravel is seen up close and the 4m version in cases where a larger area has to covered. You can also, of course, combine the two.

Gravel #1, Tiling Geometry

Tiling Geometry

In cases where an even larger area of gravel is needed, these meshes do tile seamlessly – just as a bitmap texture would.

With the use of mesh object instancing, it is possible to cover areas of several hundred square meters, without consuming much more memory as one single gravel mesh would.

Gravel #1, Scalability

Scalability

Although our gravel meshes have a nominal size of 2m x 2m and 4m x 4m, you are not bound to this scale. Due to the somewhat ‘fractal’ nature of gravel and its individual pebbles, it is possible to scale the meshes up or down with basically no limit.

In this example, the same mesh works as small grains of sand, medium sized pebbles, as well as larger cobbles.

Gravel #1, Poly Count

Polygon Count

We have limited most of our gravel meshes to ~8 mio faces and ~4 mio vertices. In our view, this marks a good compromise between what is needed to produce convincing gravel, as well as what is practical, given the current level of software/hardware technology.

In cases where a greater mesh detail is needed, our gravel meshes can easily be further subdivided to produce the desired resolution.

Gravel #1, Data Formats

Data Formats

All gravel meshes come as 3DS Max™ 2010+ .max files on DVD. OBJ files are provided as additional download. The meshes consist of 25cm-clusters, grouped into two layers, inside one container group. The scene scale is 1 unit = 1 mm.

Gravel Stone Textures

There are 94 distinct stone textures contained in this product (disks 4 to 6), plus 163 color variations, making for a total of 257 different styles.

These stone texture are meant to be used in conjunction with the 3D gravel meshes to produce a large variety of highly realistic gravel styles. Of course you can also use them for other purposes.

Diffuse Map
Normal Map
Bump Map
Specular Map
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Texture Maps

Each stone texture has a real-world scale of 50cm x 50cm at a resolution of 4096px x 4096px and consists of

  • Diffuse map, i.e. the color information; often in different variations
  • Bump map, containing fine surface details
  • Normal map, containing medium to small scale surface details
  • Reflectivity map, describing the reflectivity of the stone
Gravel #1, Inherent Variation

Inherent Variation

Each stone texture has been created so that its inherent variation in surface texture and color mirrors the variability of the whole gravel surface.

Because random UV coordinates have been assigned to each individual pebble, different parts of the stone texture will be randomly applied to the pebbles of the gravel mesh when rendering.

Gravel #1, Customization

Customizable

You are of course not limited to the set of stone textures included in this product. You can very easily modify these textures to achieve a special look you want, or even create your own stone textures. Because the UV coordinates of the gravel mesh respect texture edges, these stone textures do not have to be tilable.

Gravel #1, Materials

Ready-To-Use Materials

As with the gravel textures, we provide ready-to-use material setups for 3DS Max™ 2010+, as well as MaxwellRender™ (2.x).

Gravel #1, Close Up
Putting it all together allows for stunning results.

Downloads

  • Reference Guide – Gravel-1

    Reference guide book for Gravel – Volume One, 202 pages.

    pdf | 92.5 MB – Download

Specifications

Gravel Textures

  • 15 lossless compressed base textures (PNG format; 4096px x 4096px; 219 maps)
  • 134 high-quality compressed variation textures (JPEG format; 4096px x 4096px; 1290 maps)
  • Material settings for 3DS Max™ 2010+ (45 .mat files)
  • Material settings for MaxwellRender™ 2.x; ‘dry’ and ‘wet’ versions (1608 .mxm files)

Gravel Meshes

  • 3D gravel meshes, compatible with 3DS Max™ 2010+ (30 .max files)
  • 3D gravel meshes in OBJ format, compatible with many other applications (30 .obj files; download-only)

Stone Textures

  • 257 lossless compressed stone textures (PNG format; 4096px x 4096px; 541 maps)
  • Material settings for 3DS Max™ 2010+ (15 .mat files)
  • Material settings for MaxwellRender™ 2.x; ‘dry’ and ‘wet’ versions (518 .mxm files)

Packaging

  • Cardboard case, containing 6 DVD
  • Size: 14.2 x 19 x 3.5 cm
  • Weight: 600g
Gravel #1, Disks