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POFew questions regarding OpenGL (culling and optimization) in a cube-based voxel engine
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copied!<p>I'm using the LWJGL to create a Minecraft like voxel engine, but I'm running in to some difficulties with optimization. Now, obviously culling will probably have a great positive impact on performance, so to do back face culling I did something like this:</p> <pre><code> if (chunk.getWorld().getGame().cam.getZ() >= zz) { glTexCoord2f(1, 1); glVertex3f(1, 1, 0); glTexCoord2f(0, 1); glVertex3f(0, 1, 0); glTexCoord2f(0, 0); glVertex3f(0, 0, 0); glTexCoord2f(1, 0); glVertex3f(1, 0, 0); } </code></pre> <p>And it works okay, until I run into a few problems. Invisible faces are still drawn (faces between blocks) and this doesn't exactly update if I use display lists. Here's my questions, how does one cull with display lists? I tried doing glEnable(GL11.GL_CULL_FACE); but it gave me this in return, it seems to cull front faces rather then the back:</p> <p><a href="http://i.stack.imgur.com/tjgDO.png" rel="nofollow">Culling Enabled</a></p> <p><a href="http://i.stack.imgur.com/10WPo.png" rel="nofollow">Culling Disabled</a></p> <p>This is with out culling enabled through glEnable, my culling disabled too (because with lists it's pointless). It all looks fine, but performance, I believe, can be greatly improved.</p> <p>This is my code, if I'm missing something please ask, I can upload the whole project if you need:</p> <p>EDIT: I even copied some other code to draw a cube and it still doesn't look right with culling enabled.</p>

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