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craigw9292

right way, wrong way ? (sprites.vertex)

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ok, this is what I''m trying to do. I want to display a sprite but only want PART of it transparent. I was going to load the bitmap, read in each pixel into an array - if I found the transparent color leave it out the array. During the render process I convert the array into Point Verts and draw primitives ..... Good or not? I could''nt find a way to get SPRITE to render part of a Texture transparent. thanks!! C

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This is actually extrememly easy to do! Look at the D3DXCreateTextureFromFileEx() function. It has a parameter called ColorKey, which indicates a transparent color in the texture. So all you have to do is tell it your transparent color, and it will take care of the rest for you - no manual pixel reading or anything.


Dustin Franklin
Mircrosoft DirectX MVP

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