Quad Engine Speed problems

Insodus · 2002-04-22T18:30:26

I have a quad engine the im using to draw an isometric map. I'm using static indexed primitives to draw about 200 tri's. For some reason, if I have meshes and other stuff I get high frame rates, I can add in all kinds of other code and it doesn't slow down a hair, but with the 200 tri's it's slow ass malassis. They are all using the same texture, which is 256x256 in memory. This is the indexed primitive code. Can someone tell me what here might be slowing it down almost to a crawl? If I comment out just the render call, the FPS shoots right back up to normal. So it's not the creation or memcpy of the map. Just the render. ???????? Any ideas? Thanks, Insodus void Direct3D::CreateIndexedVertexBuffer(DWORD flags, LPDIRECT3DVERTEXBUFFER8 & vertbuff, LPDIRECT3DINDEXBUFFER8 & indbuff, int size, int num_elems, int num_inds) { pD3DDevice->CreateVertexBuffer(size * num_elems, D3DUSAGE_WRITEONLY, flags, D3DPOOL_DEFAULT, &vertbuff); if( FAILED(hRet) ) { MainErr->HandleError(__FILE__, __LINE__, CRITICAL, D3D_ERROR, "Error creating vertex buffer.", hRet); } pD3DDevice->CreateIndexBuffer(sizeof(WORD) * num_inds, D3DUSAGE_WRITEONLY, D3DFMT_INDEX16, D3DPOOL_DEFAULT, &indbuff); if( FAILED(hRet) ) { MainErr->HandleError(__FILE__, __LINE__, CRITICAL, D3D_ERROR, "Error creating vertex buffer.", hRet); }} inline void Direct3D::RenderIndexedBuffer(D3DPRIMITIVETYPE type, DWORD flags, LPDIRECT3DVERTEXBUFFER8 vertbuff, LPDIRECT3DINDEXBUFFER8 indbuff, int size, int num_elems, int num_inds) { pD3DDevice->SetStreamSource( 0, vertbuff, size ); pD3DDevice->SetVertexShader(flags); pD3DDevice->SetIndices( indbuff, 0 ); pD3DDevice->DrawIndexedPrimitive(type, 0, num_elems, 0, num_inds / 3); } [edited by - Insodus on April 18, 2002 11:11:18 AM] [edited by - Insodus on April 18, 2002 11:12:24 AM]

Graphics and GPU Programming Programming

Started by Insodus April 18, 2002 10:10 AM

9 comments, last by Insodus 21 years, 12 months ago

Wreakon

121

April 22, 2002 06:30 PM

Well, 200 is minimal to send to a video card, but as far as I remember they were static so it doesn''t really matter. Some things to do would be:
VB should be in DEFAULT MEMORY
Are your triangles properly ordered? They are supposed to be clock-wise or counter-clockwise (otherwise they will render but there is a penalty I believe.)
Are the UV coords all valid? Basicly make sure you are sending quality data to the video card. Other than that that is a very good framerate(60fps) you want to keep it there or close to there.

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Quad Engine Speed problems

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Quad Engine Speed problems

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