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Member Since 26 Oct 2011
Offline Last Active Jul 22 2014 10:28 PM

#5147780 Optimising my renderer

Posted by hdxpete on 17 April 2014 - 07:39 PM

for(texture in textures)

    for(sprite in sprites)

      if(sprite.texture == texture)



    if(list.size > 0)




thats the basics. implementation is up to you

#5147589 Optimising my renderer

Posted by hdxpete on 17 April 2014 - 03:07 AM

•Minimize state changes and group the remaining state changes. How do you group state changes?

- for example... changing the alpha blending. 

•Use static vertex buffers where possible. How do you know if it is static?

-i forget the flags but basically... can you write to it after it's created? then it isn't static

Use one large static vertex buffer per FVF for static objects, rather than one per object. What if each object has the same vertex property? Eg. all objects are 256 x 256 quads? reuse the same buffer?

- i create 2-3 pools. switch pools every frame. hopefully reduces lag to gpu

•If your application needs random access into the vertex buffer in AGP memory, choose a vertex format size that is a multiple of 32 bytes. Otherwise, select the smallest appropriate format. Random access as in needing to change vertexes at runtime?

- data = vb->lock(); data +13 = x; vb->unlock();   lock/unlock as minimally as possible. write to a locked buffer as minimially as possible.


one thing i noticed is you are doing 1 draw call per sprite. group sprites by texture to reduce draw calls. you may have 10k sprites but do you have 10k textures? maybe you have 10k sprites but they are on 2 textures. you don't need 10k draw calls. you can do it in 2.

#5117751 Trying to load 16 bits texture only show in black and white...

Posted by hdxpete on 18 December 2013 - 12:06 AM

glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, data);

#5103282 Vertex and Index Buffer Locking

Posted by hdxpete on 21 October 2013 - 08:41 PM

what i do is create a number of dynamic VBO equal to the swap frame count. so if im double buffered i create 2. frame A i write to 0 and frame b i write to 1 rinse wash repeat. hopefully the driver wont stall as much since i'm not reusing the same VBO info on the next draw.

#5027036 Component based game engine book

Posted by hdxpete on 29 January 2013 - 07:57 PM

I've seen a lot of people recommend the Jason Gregory book. I have been trying to pick it up. the Stefan Zerbst i believe i have...


Thanks all for the answers. It seems there is yet a component based game engine design book. Shame really...

#5026670 Component based game engine book

Posted by hdxpete on 29 January 2013 - 12:33 AM

Looking for a good book on component based game engine development. preferably one that doesn't take me through the basics of what a vector and matrix is.


I really like the unity approach as far as a game engine design goes and would like to see about designing my own similarly structured game engine in my free time.


thxs for any input.