mipmapping in directx

[teedee]

Using the linear_mipmap_linear filter on my textures seems to have no effect in DirectX, though it does work in OpenGL. Does anyone have any experience with this? Is there some additional step I need to do to get mipmaps with DirectX?

[zhao]

I don't have problems with mipmaps under Dx9. I checked this with a Win7/GTX 260 and a WinXP/Amd 5450. But I'm using an old (6 month) build of Panda and I'm not sure if anything has been changed recently.

If you want, you can send me a minimal sample of your code + art that has the problem and I can check it on my computer.

Zhao

[teedee]

Thanks for replying, I missed it somehow.
I've put together the simplest possible demo.
http://novuscom.net/~spacebullet/out/mipmap_test.zip
I tested 1.7.2, 1.8.0, and the latest snapshot build, all with the same results:

GL


DX9

[zhao]

Hi teedee,

I think I found your problem. Try manually setting the texture filter.

Code: Select all

        plane = self.loader.loadModel('/c/test/Newfolder/card')
        tex = loader.loadTexture( '/c/test/Newfolder/checker.png' )
        tex.setMinfilter( Texture.FTLinearMipmapLinear )
        tex.setMagfilter( Texture.FTLinear )
        plane.setTexture( tex, 100000 )
        plane.reparentTo(self.render)
        self.cam.setPos(0, -50, 5)


Making this change on my computer fixes the problem. Mostly likely, the texture set for the dx9 branch is not checking the loadprc when setting the texture params.

Zhao

[teedee]

Awesome, it works if I put the filter in the EGG file.
I'll see if i can find the problem in the panda code.