Simulates rock using a random 3D distribution of two different grain material types. 
         
         Find this texture in the Create bar. To apply this texture as a texture map, see Map a 2D or 3D texture.
         
         Tip 
               Assign this texture to the material’s bump map to achieve a coarser simulated texture.
 
             
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                   The color of the two grains in the texture. To select different colors, click the color bars to open the .
                   
 
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                   Specifies the grain size and scales the entire texture. The valid range is 0 to infinity. The slider range is 0 (no grains)
                     to 0.1 (large grains). The default value is 0.01.
                   
 
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                   Controls the amount  blends into . The range is 0 to infinity. The slider range is 0 (no blending) to 1 (smooth blending). The default is 1.
                   
 
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                   Determines the dominant color. The valid range is 0 to infinity. The slider range is 0 ( is totally dominant) to 1 ( is totally dominant). The default is 0.5.