I have a PNG image that开发者_JS百科 has an unsupported bitmap graphics context pixel format. Whenever I attempt to resize the image, CGBitmapContextCreate() chokes on the unsupported format
Using the HTML5 <canvas> element, I would like to load an image file (PNG, JPEG, etc.), draw it to the canvas completely transparently, and then fade it in. I have figured out how to load the im
I\'m working on making an iPhone App where there are two ImageViews and when you touch the top one, wherever you tapped, the bottom one shows instead.
Is there a way I can determine if an HDC uses alpha chan开发者_JS百科nel? I read Question 333559 and Question 685684, but their questions are about BITMAP. Apparently, some HDC has alpha channel (thou
Here is my problem : I have a Sprite covering the entire scr开发者_JS百科een. Other than a certain rectangle of this sprite
I am new to iphone development. I am displaying my content in grouped table view. I want to change the alpha value of the first group of my table only. How can 开发者_如何学Pythoni achieve that. Pleas
System.Drawing.Graphics.DrawImage pastes one image on another. But I couldn\'t find a tr开发者_C百科ansparency option.
I have two BitmapData objects with alpha channels. I\'d like to combine them into a single one by using max(channel_image_one, channel_image_two) for each channel, including the alpha. Is there an eas
I want to use an alpha mask in OpenGL so that white(1)=visible and black(0)=hidden. So what I do is I write something in the alpha component of the framebuffer using 开发者_如何学运维glColorMask(Fals
How does one go about using a alpha blending formula to achieve the src rgb color from the resultant 开发者_Go百科of the 2 blended togetherWell, you can just reorder the alpha blending equation
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