Question

Platform – iOS.
Language – Object c, OpenGL.

I have to put 2 UIViews for opengl rendering.

For example, one is rotating triangle(3D), and another is jumping square(3D) in a UIWindow.

They animate forever in different thread.

Each Thread may call function “glDrawArrays” to render object. (Maybe 10 ftps?)

They have own “Frame and Render Buffers”, “command pipe line” and “thread”.

Command pipe line what I mean is like following codes.

For example

glBindTexture(GL_TEXTURE_2D, texture);
glTranslatef(1.5, 0, 1);
glScalef(0.5,0.5, 1.0);
glMultMatrixf(someMetrix);

I can’t not understand glXXXs function’s usage.

For example, glBindTexture.

I want to bind texture to one buffer and bind another texture to another buffer by different thread.

I cant imagine , when i see the prototype of function “glBindTexture”.

There is no parameter “binding WHERE”.

glXXX functions looks likes putting and binding on same area.

Please, guide me.

Thanks.

Answer 1

May be the below link will be helpful to you…

http://developer.apple.com/library/ios/#documentation/3DDrawing/Conceptual/OpenGLES_ProgrammingGuide/Introduction/Introduction.html

http://gamesfromwithin.com/using-multiple-opengl-views-and-uikit

I think best way is first learn openGL ES and try to implement single view, then putting multiple views will be quite easy for you.