OpenGL|ES tutorials - Follows NeHe track.
Post: #12miketucker Wrote:One snag i ran into, I get an EXC_BAD_ACCESS error when i debug on the iphone. It runs fine in the simulator. and i dont get any compile errors.
I've got the same problem here. If I want to color the vertices I receive an EXC_BAD_ACCESS.
Code:
- (void)drawView:(GLView*)view {
glClear(GL_COLOR_BUFFER_BIT);
glLoadIdentity(); // Reset The Current Modelview Matrix
glTranslatef(0.0f,2.0f,-6.0f); // Move up 2 Units And Into The Screen 6.0
glVertexPointer(3, GL_FLOAT, 0, triVertices);
glEnableClientState(GL_VERTEX_ARRAY);
glColorPointer(3, GL_UNSIGNED_BYTE, 0, triColors);
glEnableClientState(GL_COLOR_ARRAY);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 3);
}edit:
http://discussions.apple.com/thread.jspa...start=6135
I found that glColorPointer is the problem. The documentation says, that the size argument can be 3 or 4.
If I set it to 3 it doesn't work. 4 works great after you added a 4th value to the color array so that you've got 3 RGBA colors. If you want all colors full opaque, set it to 255. After that it works an your phone. At least on mine.
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