I have an application that draws 3-d map view marked up lines that show various features. I am porting the map over to an OpenGL-ES architecture, but am having a bit of trouble working out how to disp
I\'ve been trying to figure out how to use float textures in GLES2. The API Reference says that only unsigned b开发者_如何学编程ytes and shorts can be used, but I\'ve seen people saying it is supporte
I am writing a tile-based game engine for the iPhone and it works in general apart from the following glitch. Basically, the camera will always keep the player in the centre of the screen, and it move
Looking for clues about orienting an OpenGL ES app in landscape, most information I found dates back from 2008, most of it refering to the early versions of the SDK. Apparently, back in the days, in t
I\'m trying to overlay one image on top of another onto a simple quad. I set my bottom image as texture unit 0, and then my top image (which has a variable alpha) as texture unit 1. Unit 2 has mode GL
Using OpenGLES 1.1 on the iPhone 3G (device, not simulator), I do normal drawing fun. But at points during the run of the application I get giant memory spikes, after a lot of digging with instruments
I\'m looking to get some additional performance (FPS) increases on my iPhone App.I\'m already using interleaved data, GL_SHORT and a single texture atlas.See this question for details of what I\'ve al
Normally, you开发者_JAVA百科\'d use something like: glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
To draw a dotted line in OpenGL I c开发者_运维问答an use glLineStipple, but how do I achieve the same effect in OpenGL ES 1?Lines can be textured, just like triangles.Enable alpha testing, apply an al
I\'m working on writing a rather basic app. It uses minimal touch input, and mostly just plays fancy animations. There isn\'t much animation, but the way it\'s currently done seems super inefficient a
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