Tagged Questions
3
votes
2answers
61 views
using DirectX to generate a sprite sheet
I am building a site in HTML5 for my client and it must run on the iPad/iPhone (i.e. Safari on iOS).
They want a 3D effect where they have a simple, yet, specific product they want to show on the ...
2
votes
0answers
76 views
Displacement Mapping opengl-es
I need to do an application similar to this Morfo. And I posted a question here where the answer states the solution is "Displacement Mapping" . And I googled this to do it in opengles. I couldnt get ...
3
votes
0answers
54 views
Rotate an image and get back to its original position - opengles glkit
I need to rotate an image in opengles GLkit and get it back to its original position in GLkit.
rotation += 5;
_modelViewMatrix = GLKMatrix4Rotate( _modelViewMatrix, GLKMathDegreesToRadians(5), 1, 0, ...
1
vote
1answer
139 views
OpenGL ES screen to world coordinate
I am currently attempting to convert my screen coordinates to world coordinates, to be able to interact with objects. I am using glm and unProject to try and achieve this, so far this is my code:
...
0
votes
0answers
40 views
iOS billboard rendering performance
What is the fastest way to render semi-transparent billboards (for a particle system) on iOS? I'm currently using GLES1, but if required for performance I can switch to GLES2.
Does sorting the quads ...
2
votes
1answer
387 views
Bad FPS for smaller size (OpenGL ES with SDL)
If you saw my other question, well, there is still a little problem:
Click here to watch on youtube
Basically, the frame rate is very bad on the actual device, where for some reason the animation is ...
1
vote
0answers
85 views
iPhone collada object
Hi I am new to game development. I see many examples and tried myself like displaying triangle, cube etc. Now I am looking to render a Collada object. So I created a Collada object using Google Sketch ...
1
vote
1answer
181 views
Drawing application on OpenGL for iOS (iPad) [closed]
Some help is needed. I'm developing drawing application on OpenGL (deployment target 4.0) for iOS (iPad). We have 3 drawing tools: pen, marker (with alfa) and eraser. I apply drawing with textures ...
1
vote
1answer
663 views
Correct use of VAO's in OpenGL ES2 for iOS?
I'm migrating to OpenGL ES2 for one of my iOS projects, and I'm having trouble to get any geometry to render successfully. Here's where I'm setting up the VAO rendering:
void bindVAO(int ...
1
vote
3answers
1k views
How do I render .dae models?
I'm building a game for iOS. I'm quite new to OpenGL but what I want is to take a 3D model I have made in Google SketchUp and use it in my 3d game. The problem is I don't know how to proceed. I have ...
0
votes
0answers
178 views
iOS : Creating a 3D Compass
Originally posted here: iOS : Creating a 3D Compass
Hi everybody,
Quite new in this forum.Posted the same question in stackoverflow and there some people suggested to shift it here, so that I can get ...
0
votes
1answer
267 views
Straightforward guidelines for converting OpenGL to OpenGL ES?
Is there a straightforward list of finite steps that I need to follow to convert an OpenGL program into an OpenGL ES that's used on the iPhone and iPad? I'd be using GLKit.
I've seen some similar API ...
5
votes
2answers
722 views
Getting the number of fragments which passed the depth test
In "modern" environments, the "NV Occlusion Query" extension provides a method to get the number of fragments which passed the depth test. However, on the iPad / iPhone using OpenGL ES, the extension ...
3
votes
1answer
1k views
Is glEnable obsolete/unneeded in OpenGL ES 2?
In an iOS app I am writing I am now culling all the GL 1 crap from my GL 2 code. Can I safely remove glEnable?
