I rendered the scene out in 3delight (Renderman) and the images blend together as you’d expect.ĮDIT2: If you take the. There is a faint edge on the boundary between objects and this shouldn’t be.
RENDERMAN IT RENDERING BLACK AND WHITE FULL
You might want to still use full OSA to keep the rough edge away.ĮDIT: it’s still not right though. I checked the original PNG in Shake and it comes out a bit rough looking.Īs for the black border, if you go into the material editor and in the Map To section, there is a button called stencil, this will get rid of the faint edge. Using the tiff format makes the edge cleaner so you get a smooth line. I checked the image again in Shake and I see it wasn’t supposed to have a thin black edge. I clicked the Full Osa button and it made no difference, neither did saving it as a psd or a tiff?!? Have you got an example of how you got it working? you could mul the rgb channels by the alpha with nodes to do your own premul if you can’t find the premul option in fireworksĮDIT: or a quick and dirty way to do it is to import your images to the SE and hit the convert button, render and resave them…then use the new images for your textures I know that alpha over in the seq editor depends on premul images to work right and the SE even has a “convert to premul” button in the image properties dialog…there doesn’t seem to be the same option in the properties of the UV/image editor though. When Blender reads RGBA files, “Premul” is considered the standard. Remember to select the RGBA option before saving. Use “Premul” alpha for post-processing such as filtering or scaling. When blender works on images with alpha it assumes that they are premultiplied…you can get outlines like that if they are not. I think that AI is exporting premul, and it seems that Fireworks is not…it should have that option though Sorry guys, I believe its the other way around. Are there any PNG or alpha experts who know the answer?Īny help on this matter would be greatly appreciated! It seems that when I have a black texture I sometimes get a fuzzy white outline and when I have a white texture (the clouds) I get a fuzzy black one. …but sometimes I don’t want black outlines! Notice the black lines around the clouds, bush and wall? To get around this I can apply black outlines: The same applies to images without a black outline:
I don’t understand why this happens as both graphics are perfect in Fireworks but not in Blender. To get this effect I have to use the PNGs straight from AI, any resizing a messing about in another program causes the white lines?!? If you can’t see it above, hopefully you’ll notice the difference in the render: If I resize the image in another program, like Fireworks I get an unsigthly little edge appear: If I export a PNG with alpha from AI I get a good result: This time I am making the graphics in Adobe Illustrator (AI) and I have encountered a few problems. I want to make an animation using alpha mapped planes, which is a technique I employed here:
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