Jump to content
  • Advertisement

Archived

This topic is now archived and is closed to further replies.

Huga

Unstable framerate with a pattern

This topic is 5737 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

Hi. I have a problem with my framerate in my dx8.1 app. It goes 600, 100, 200, then back to 600 again. If I draw some more it goes like 300, 50, 80 etc. What I''m doing is that each frame I''m filling a vbuffer like this; m_vertexbuffer->Lock(0, 0, (BYTE **)&t2, D3DLOCK_DISCARD); memcpy(t2, m_vlist, sizeof(Vertex) * m_renderlistsize * 6); m_vertexbuffer->Unlock(); then I render it in pieces, sorted by texture. Something like this: m_d3dDevice->SetStreamSource(0, m_vertexbuffer, sizeof(Vertex)); m_d3dDevice->SetVertexShader(D3DFVF_Vertex); for(int t = 1; t < curtex+1; t++) { SetTexture(texchanges[t][0]); m_d3dDevice->DrawPrimitive(D3DPT_TRIANGLELIST, start, texchanges[t][1] * 2); start += texchanges[t][1] * 6; } Oh, and the buffer is filled with 3000 vertices for the faster fps and 9000 for the slower. I''m only using one 64x64 texture so that can''t be a problem. The sdk samples works with a steady framerate so obvioulsy I''m doing something wrong here. Any tips appreciated. Thank you.

Share this post


Link to post
Share on other sites
Advertisement
Hmm I just noticed something odd. When I comment out the rendering code I get a steady fps, but after uncommenting that code again, it suddently ran fine at 80 fps. But only the first time. I tried to reprocduce this, and I could, but it doesn''t work every time. Could it be that I''m I failing to release resources on the card, or something like that?

Share this post


Link to post
Share on other sites

  • Advertisement
×

Important Information

By using GameDev.net, you agree to our community Guidelines, Terms of Use, and Privacy Policy.

We are the game development community.

Whether you are an indie, hobbyist, AAA developer, or just trying to learn, GameDev.net is the place for you to learn, share, and connect with the games industry. Learn more About Us or sign up!

Sign me up!