forums.ps2dev.org

[Tinnus]

So, I don't think I understood the sceGuBlendFunc function. How would I go about setting the following modes?

- (Source + Dest) / 2
- Source / 4 + Dest

Basically I want to know how to multiply one or both of the colors by some value. Currently I can only do 1A + 1B or 1A - 1B :P
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Let's see what the PSP reserves... well, I'd say anything is better than Palm OS.

[memon]

You use alpha. In the first case you should use: GU_SRC_ALPHA, GU_ONE_MINUS_SRC_ALPHA and source alpha value of 128. In the second case use GU_SRC_ALPHA, GU_ONE and source alpha of 64. If you are using texture as source color you may want to modulate the color coming from texture with a white color with alpha set to the value you want.

[chp]

If it's a fixed value, you don't need to use alpha, you can use GU_FIX constants. Example:

[Tinnus]

Ah, I knew the FIX thing was for something like that. Thanks a lot :)
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Let's see what the PSP reserves... well, I'd say anything is better than Palm OS.