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Direct3D9 drawing problem

Started by Yosepp Nov 24, 2003 at 9:44 AM 3 replies 300+ views

Original Post

Nov 24, 2003 at 9:44 AM

Hi, I was having problems with my code: i can't find the right coordinates for the triangle so it would be on screen. If i add the RWH component to FVF, i can draw it, but its really strange.When i remove it, i see nothing. I've tried some tutorials but they don't seem to work for me. Try it out: download www.hot.ee/horizonsoft/D3DL1.zip (Visual c++ 6.0 and DirectX SDK 9 required) Thanks for help! [edited by - Yosepp on November 24, 2003 10:46:48 AM]

Castaway

Nov 27, 2003 at 11:43 AM

Try adding a projection transformation.

[edited by - Castaway on November 27, 2003 12:44:17 PM]

PlayGGY

Nov 27, 2003 at 11:50 AM

RHW just means that you have transformed the vertices yourself, so Direct3D just sends them to the driver without doing anything to them.

[edited by - PlayGGY on November 27, 2003 1:25:39 PM]

Night Elf

Nov 27, 2003 at 11:53 AM

Having an RHW tells Direct3D your vertex data is already in screen space (screen coords), so if you are making some sort of 2D program, you should leave the RHW component.

If you''re making a 3D app, read about world, view and projection tranforms. They''re all explained on the SDK''s tutorials.

Good Luck!

Mariano Ruggiero
Lead Programmer
ONIRIC GAMES

Yosepp

Nov 28, 2003 at 10:05 AM

Thx, i got it solved! Forgot the projection/view matrix thingie.

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