Our original Wood Veneers series was released between and to great success. It is still the most complete and, in our opinion, best collection of wood textures on the market. But a lot has changed since then in the 3D visualization business. Unbiased rendering gained market dominance which lead to a much greater focus on physical realism in general. Even in real-time visualization, physically based rendering is now a common approach. We have also learned a lot in the past years and developed new methods and techniques to capture materials and create textures that allow for photo-real rendering results.
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System Requirements These textures are on the low-end regarding the demand they put of hard- and software. Any PC that is not older than, say, 10 years should have no trouble with them whatsoever.
Most 3D applications these days support at least basic normal mapping; many do also offer displacement mapping or similar advanced techniques. 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.
One that is widely used is displacement mapping. Although certainly an improvement, the illusion breaks down quickly once one gets too close. Real 3D gravel is the solution Our Solution 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. 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. This allows for the creation of custom mixtures of different stone types and colors.
Clustered meshes allow for flexibility 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. 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.
Only use the layers you need 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. 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.
Mesh scale vs. 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 meshes tile seemlessly like textures Tilable 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. Different scales, same mesh Scalability Although our gravel meshes have a nominal size of 2m x 2m and 4m x 4m, you are not bound to this scale. In this example, the same mesh works as small grains of sand, medium sized pebbles, as well as larger cobbles.
In cases where a greater mesh detail is needed, our gravel meshes can easily be further subdivided to produce the desired resolution. OBJ files are provided as additional download. The meshes consist of 25cm-clusters, grouped into two layers, inside one container group. 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.
Natural variation through random mapping coordinates 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.
Endless Variations 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.
Hundreds of stone textures included Specifications Each stone texture has a real-world scale of 50cm x 50cm at a resolution of px x px and consists of Diffuse map, i.
Download Arroway Textures – Stonework Vol. 1