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Howto:Multi-channel lightmap: Difference between revisions
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For the alpha channel, duplicate the greayscale layer that you want to convert to the alpha channel. | For the alpha channel, duplicate the greayscale layer that you want to convert to the alpha channel. | ||
[[File:Tutorial 06.jpg| | [[File:Tutorial 06.jpg|400px|Duplicate greyscale for alpha conversion]] | ||
Select color to alpha. | Select color to alpha. | ||
[[File:Tutorial 07.jpg| | [[File:Tutorial 07.jpg|400px|Convert greyscale to alpha (color to alpha)]] | ||
Change the color selector to black by clicking on it and choosing r = 0, g = 0, b = 0, apply. | |||
[[File:Tutorial 08.jpg| | [[File:Tutorial 08.jpg|400px|Color to alpha details]] | ||
Next you can apply some Gaussian blur to each of the channels you have now created (rgba). To save a few steps you can apply the Gaussian blur to the final four channel lightmap, I think you get the same results. | Next you can apply some Gaussian blur to each of the channels you have now created (rgba). To save a few steps you can apply the Gaussian blur to the final four channel lightmap, I think you get the same results. | ||
[[File:Tutorial 09.jpg| | [[File:Tutorial 09.jpg|400px|Applying Gaussian blur]] | ||
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Were almost finished, The next step adds the alpha channel to the 3 channel rgb layer you just created. | Were almost finished, The next step adds the alpha channel to the 3 channel rgb layer you just created. | ||
[[File:Tutorial 11.jpg| | [[File:Tutorial 11.jpg|400px|Copying results to new layer]] | ||
While there may be other ways to do this step, I used a mask to add the alpha channel created previously back in. The order here is tricky. First add a layer mask for the alpha channel to be copied into later. | While there may be other ways to do this step, I used a mask to add the alpha channel created previously back in. The order here is tricky. First add a layer mask for the alpha channel to be copied into later. | ||
[[File:Tutorial 12.jpg| | [[File:Tutorial 12.jpg|400px|Add layer mask for alpha channel]] | ||