Tagged Questions
2
votes
3answers
772 views
glGetFloatv – should it be avoided? Can it be replaced?
Platform is OpenGL ES 1.x. I am using glGetFloatv() to get MODELVIEW matrix. This allows me to compute points, where I need to draw a shadow effect. This is very handy, as I can forget about ...
2
votes
5answers
2k views
Skipping glReadPixels and reading iPhone's “VRAM” directly
I'd like to rapidly capture "screenshots" of my OpenGL ES iPhone game and turn them into a video. I've tried the following approach (it works but degrades the game play to an unacceptable level):
...
9
votes
5answers
3k views
OpenGL's matrix stack vs Hand multiplying
Which is more efficient using OpenGL's transformation stack or applying the transformations by hand.
I've often heard that you should minimize the number of state transitions in your graphics ...
6
votes
3answers
532 views
Is Frustum Culling by itself enough for Consoles and Mobiles?
Software occlusion culling is often expensive, especially for smaller and older devices.
Is frustum culling alone adequate on systems that can optimally display 10k triangles at most?
If not, are ...
