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Procedural texturing: Difference between revisions
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→The grain texture
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The grain texture adds a grainy pattern to the terrain at close distances, giving the appearance of better resolution. The grain texture parses the texture alpha channel as transparency (since it just superimposes a pattern), so here the alpha channel can not be used to encode vegetation effects, and the grain texture may not have a strong color. | The grain texture adds a grainy pattern to the terrain at close distances, giving the appearance of better resolution. The grain texture parses the texture alpha channel as transparency (since it just superimposes a pattern), so here the alpha channel can not be used to encode vegetation effects, and the grain texture may not have a strong color. | ||
[[File:grain_texture.jpg|300px|The grain overlay texture]] | [[File:grain_texture.jpg|300px|center|The grain overlay texture]] | ||
To allow fine-tuning of the grain effect, the texture can be multiplied with the <grain_strength> parameter which sets the overall alpha of the grain effect - a low value works best on bright base textures whereas dark base textures may require a stronger grain. | To allow fine-tuning of the grain effect, the texture can be multiplied with the <grain_strength> parameter which sets the overall alpha of the grain effect - a low value works best on bright base textures whereas dark base textures may require a stronger grain. | ||