2014/10/15 下午 10:15:07

iphone Programming Glossary: tuning

How to change thin image to fat image in iPhone SDK?

http://stackoverflow.com/questions/10186200/how-to-change-thin-image-to-fat-image-in-iphone-sdk

certain points closer together and stretching others further apart. Getting a realistic fat face took a lot of fine tuning but the results are quite good I think. Once I have the mesh calculated OpenGL does the heavy lifting of transforming the..

Fragment Shader - Average Luminosity

http://stackoverflow.com/questions/12168072/fragment-shader-average-luminosity

value in ~6 ms on an iPhone 4 and I think I can squeeze out a 1 2 ms reduction in that processing time with a little tuning. In my experience that seems faster than the iOS devices normally generate mipmaps for power of two images at around that..

iPhone Development - Lessons in memory management

http://stackoverflow.com/questions/464908/iphone-development-lessons-in-memory-management

in a little detail with example and to fine tune the application for memory and performance Thanks. iphone memory tuning share improve this question Now that we have the just say no answers to autorelease out of the way I thought I'd add..

How can I optimize the rendering of a large model in OpenGL ES 1.1?

http://stackoverflow.com/questions/5718846/how-can-i-optimize-the-rendering-of-a-large-model-in-opengl-es-1-1

can do to shrink the geometry size can lead to an almost linear reduction in rendering time in my experience. These tuning steps have worked for me in the past If you're not already you could look at using indexing which might cut down on geometry.. aligning your data to 4 byte boundaries etc. but the ones above are what I've found to have the largest impact in the tuning of my own OpenGL ES 1.1 application. Most of these points are covered well in the Best Practices for Working with Vertex..

Learning OpenGLES 2.0 on iOS

http://stackoverflow.com/questions/8482327/learning-opengles-2-0-on-ios

ShaderX6 ShaderX7 GPU Pro and GPU Pro 2 also have sections devoted to OpenGL ES 2.0 which provide some rendering and tuning hints that you won't find elsewhere. Those are more advanced and expensive books though. If you're just getting started..

Will my iPhone app take a performance hit if I use Objective-C for low level code?

http://stackoverflow.com/questions/926728/will-my-iphone-app-take-a-performance-hit-if-i-use-objective-c-for-low-level-cod

Comparisons of Common Operations . Also this post by Savoy Software is an interesting read when it comes to tuning the performance of an iPhone application by using Objective C . I tend to prefer the clean descriptive syntax of Objective..