Low fps problems with many objects

[Phyyl]

Hi everyone, I wrote a simple "game" that allows me to modify a chunk of 32x32x32 blocks. It has ray picking and lighting. Here's a screenshot of what I can do with it :



Alright, now here's my problem. My code is fairly good, I'm using vertex buffer objects, one for each block. The chunk is never really re-rendered, because each block is an individual object and can be rendered alone. The blocks are also only rendering faces that are visible, and they tell the 6 blocks (if existing) to hide a face for faster rendering.

Now, I'm only getting ~100fps with a 32x32x32 block that only contains 32x8x32 blocks really, the rest is air. Why am I getting so low fps? Anyone has proposition?

Here are the system specs :

i5 760 2.8ghz
8gb ram 1333
gtx 580 1.5gb
intel 80gb ssd

I can post parts of my code if anyone wants it to help me!

Thanks a lot!

[quew8]

I wouldn't say that 100 fps is at all low.

[Phyyl]

Well you know, in Minecraft I get over 800fps... there's something wrong you know...

[quew8]

Well played Monseigneur Phyyl.

[CodeBunny]

You need to bake multiple blocks into a single graphics object, reducing the number of draw calls.

Say a "chunk" is a 32x32x32 group of blocks. What you need to do is combine their geometry into a single draw call, only drawing faces that are exposed to open air.

[xShane]

You need to bake multiple blocks into a single graphics object, reducing the number of draw calls.

Say a "chunk" is a 32x32x32 group of blocks. What you need to do is combine their geometry into a single draw call, only drawing faces that are exposed to open air.

That.

Make sure the chunks that can't been "seen" by the camera aren't being drawn.

[dangerdoc]

For each block, make sure that a face doesnt render if there is a block in front of that face. Also, instead of calling block.draw() for each block, just make the coordinates go into a mesh object (an array that holds vectors) then render that object instead.