2014/10/15 下午 10:11:04

iphone Programming Glossary: lighting

What does the Tiler Utilization statistic mean in the iPhone OpenGL ES instrument?

http://stackoverflow.com/questions/1287811/what-does-the-tiler-utilization-statistic-mean-in-the-iphone-opengl-es-instrumen

W component of the position in the call to glVertexPointer in this case. You might also consider pursuing alternate lighting methods like DOT3 for your polygon data particularly the spheres but this requires special care to make sure that you aren..

Advice on speeding up OpenGL ES 1.1 on the iPhone

http://stackoverflow.com/questions/1844765/advice-on-speeding-up-opengl-es-1-1-on-the-iphone

what you want using fewer attributes or components. For example if you can live without specular highlights using DOT3 lighting instead of OpenGL ES fixed function lighting would replace your 3 shorts 1 short of padding for normals with 2 shorts for.. For example if you can live without specular highlights using DOT3 lighting instead of OpenGL ES fixed function lighting would replace your 3 shorts 1 short of padding for normals with 2 shorts for an extra texture coordinate. As an additional..

What is DOT3 lighting?

http://stackoverflow.com/questions/1894351/what-is-dot3-lighting

is DOT3 lighting An answer to my question suggests that DOT3 lighting can help with OpenGL ES rendering but I'm having trouble finding a.. is DOT3 lighting An answer to my question suggests that DOT3 lighting can help with OpenGL ES rendering but I'm having trouble finding a decent definition of what DOT3 lighting is. Edit 1 iPhone.. that DOT3 lighting can help with OpenGL ES rendering but I'm having trouble finding a decent definition of what DOT3 lighting is. Edit 1 iPhone related information is greatly appreciated. iphone opengl es opengl es lighting share improve this..

Good way to calculate 'brightness' of UIImage?

http://stackoverflow.com/questions/3992790/good-way-to-calculate-brightness-of-uiimage

by the iPhone camera. I want to test the image before I perform the OCR analysis to see if there is sufficient lighting. Anyone have any ideas iphone ios uiimage uiimagepickercontroller share improve this question The most flexible way..

UIView with rounded corners and drop shadow?

http://stackoverflow.com/questions/4754392/uiview-with-rounded-corners-and-drop-shadow

work for a custom UIView ... I just wanted a blank white view with rounded corners and a light drop shadow with no lighting effect . I can do each of those one by one but the usual clipToBounds maskToBounds conflicts occur. iphone ios cocoa touch..

Choose OpenGL ES 1.1 or OpenGL ES 2.0?

http://stackoverflow.com/questions/4784137/choose-opengl-es-1-1-or-opengl-es-2-0

rendering pipelines. OpenGL ES 1.1 uses a fixed function pipeline where you feed in geometry and texture data set up lighting etc. states and let OpenGL handle the rest for you. OpenGL ES 2.0 is based around a programmable pipeline where you supply.. a tremendous amount of effort to do in OpenGL ES 1.1. These include effects like cartoon shading and ambient occlusion lighting as well as letting you do something interesting like offloading massively parallel work to the GPU. If you care to see some..

Opening door effect using Core Animation

http://stackoverflow.com/questions/5254552/opening-door-effect-using-core-animation

question What you're hoping to achieve is fairly straight forward if you aren't worried about adding any shading or lighting to the door. Check out this post from this forum UIView perspective transform It should point you in the right direction...

How can I improve the performance of my custom OpenGL ES 2.0 depth texture generation?

http://stackoverflow.com/questions/6051237/how-can-i-improve-the-performance-of-my-custom-opengl-es-2-0-depth-texture-gener

and the overall rendering pipeline in the application. First I re enabled the precalculated sphere depth and lighting texture that I'd used before with little effect only now I use proper lowp precision values when handling the colors and..

Learning OpenGL ES 1.x

http://stackoverflow.com/questions/72288/learning-opengl-es-1-x

Converting a UIImage black'n white and not grayscale for using tesseract

http://stackoverflow.com/questions/9992078/converting-a-uiimage-blackn-white-and-not-grayscale-for-using-tesseract

thresholding does a thresholding operation based on a 9 pixel region around the current pixel adjusting for local lighting conditions. This is specifically designed to help with OCR applications so it might be the way to go here. Examples images..