Question

When I use glTranslatef I have warning
Implicit declaration of function ‘glTranslatef’ is invalid in C99
If I build & run I have “EXC_BAD_ACCESS”
How I can resolve this problem?

Answer 1

It looks that
you haven’t imported required headers. You need following headers to be included if you want to develop OpenGL ES 1.0 application:

#import <OpenGLES/EAGL.h>
#import <QuartzCore/QuartzCore.h>

#import <OpenGLES/ES1/gl.h>
#import <OpenGLES/ES1/glext.h>

Don’t forget to add frameworks: OpenGLES.framework and QuartzCore.framework.

Edit:

In OpenGL ES 2.0 you don’t have any of the matrix operations available in 1.0 such as glTranslatef, glRotatef, glFustrum and many more. It’s not easy to implement them by yourself but this is the price that you need to pay if you want programmable pipeline. In great short: you need to write your own functions to represent and manipulate 4×4 matrices: multiple them, multiply by vectors, create rotation, translation and scale matrices, you need also function to create projection matrix like fustrum. After that you need to declare uniforms in your vertex shaders to pass projection and modelview matrices. Then you need to multiply them to apply transform and projection to a vertex:

// Simple vertex shader
uniform mat4 projection;
uniform mat4 modelview;

attribute vec3 position;

void main(){
    gl_Position = projection * modelview * vec4(position, 1.0);
}

There’s a great book that will teach you how to use ES1 and ES2 on iPhone – iPhone 3d Programming. If you don’t have time, stick to an ES1. It’s ok if you don’t need programmable pipeline. But in my opinion this is worth learning.